Patent Grant
10261313
Many wearable display systems are severely constrained by form factor which limits battery size and single charge use time. This is particularly true for glasses with an integrated camera or display and wearable devices that integrate multiple functions using additional sensor or circuitry for other functions, all of which make use of the device battery.
Systems and methods described herein therefore include wearable display systems with improved boot operation and power consumption.
Various ones of the appended drawings merely illustrate example embodiments of the present disclosure and should not be considered as limiting its scope.
The description that follows includes systems, methods, techniques, instruction sequences, and computing machine program products that embody illustrative embodiments of the disclosure. In the following description, for the purposes of explanation, numerous specific details are set forth in order to provide an understanding of various embodiments of the inventive subject matter. It will be evident, however, to those skilled in the art, that embodiments of the inventive subject matter may be practiced without these specific details. In general, well-known instruction instances, protocols, structures, and techniques are not necessarily shown in detail.
Embodiments described herein relate to systems and methods for reducing boot time in a camera system while also lowering power consumption. Certain embodiments described in detail herein include eyeglasses with integrated camera and wireless communication functionality. One example embodiment of such glasses includes a video processor for processing picture and video data from a camera. This camera data can then either be stored locally, or sent wirelessly to a client device such as a smartphone. Such glasses include separate low-power circuitry and high-speed circuitry in addition to the video processor. The low-power circuitry is designed to allow a low-power state, where the video processor and high-speed circuitry are off, and the low-power circuitry is monitoring battery power levels and communications with the user's smartphone or other client devices. Power levels and basic device functionality can be monitored from an application of a smartphone in communication with the glasses. The low-power circuitry is designed to be able to maintain this low-power state of the glasses for weeks on a single battery charge. Low-power state communications using the low-power circuitry may be enabled using a low-power wireless protocol such as Bluetooth™ low energy (Bluetooth LE.) By using a low-power processor and low-power wireless circuitry, the glasses are able to conserve power while maintaining a limited “on” state that avoids certain delays associated with powering on from an “off” state. This low-power “on” state also allows a user's smartphone to connect to the glasses at any time when the glasses have a battery charge.
The glasses of this example embodiment include a single button that allows a user to capture pictures or video. When the button is pressed and released, a picture is taken. When the button is pressed and held, a video is captured for the duration of the button hold. In either case, the low-power processor receives an input signal from the button, and the low-power processor manages the capture of camera data. The low-power processor boots the video processor, and the video processor then captures camera data and writes the camera data to memory. The video processor is then automatically powered off, and the glasses return to a low-power state. In order to enable capture of camera data that is responsive to a user's button press while conserving power, the video processor of this example implementation uses a read only memory (ROM) with direct memory access (DMA) to boot the video processor. Such a video processor can boot from an off state to capturing camera data within 300 milliseconds, and can then be returned to the off state as soon as the camera data is written to memory. This creates a responsive user experience while limiting battery drain.
Similarly, once camera data is captured in this example embodiment, the low-power circuitry manages an energy efficient connection to a client device, and transfer of the camera data to the device. For example, if the camera data is captured when there is no client device nearby, the low-power wireless circuitry may periodically transmit a service set identifier (SSID.) When a smartphone running an application associated with the glasses receives the SSID, the application may automatically request any new camera data from the glasses. The low-power processor verifies that the camera data has not been sent to the smartphone previously; then the low-power processor boots a high-speed processor of the high-speed circuitry. The high-speed processor turns on high-speed wireless circuitry, such as an 802.11 Wi-Fi chip. This high-speed wireless circuitry is then used to transmit the camera data from the memory of the glasses to the smartphone. When the transmission of camera data completes, the high-speed circuitry is automatically powered down, and the glasses return to the low-power state. Just as with the capture of camera data above, the low-power processor manages the high-speed circuitry, which consumes more power, to limit the power consumption by automatically returning the glasses to the low-power state when the data transfer is complete.
If the button on the glasses is pressed during transmission of the camera data, the low-power processor may interrupt the transmission to allow the video processor to boot, capture additional camera data, and power down as described above. The transfer may then be resumed if the smartphone is still in communication with the glasses, or may be resumed later if the connection has been interrupted.
The above example embodiment of glasses with an integrated camera is not limiting, and it will be apparent that many different embodiments are possible in view of the descriptions herein. Certain embodiments may be glasses with only the elements described above, including lenses, a frame, a video processor, high-speed circuitry, low-speed circuitry, a single button, and a battery system, with no other components. Other embodiments may have additional sensors, user interfaces, expanded memory, or any combination of additional elements.
One particular additional embodiment may include a display integrated with glasses. Such an embodiment may operate to conserve power in a manner similar to the operations described above for camera operation and camera data transfer. For example, an example embodiment with a display may operate in a low-power mode, with display elements powered down and low-power circuitry monitoring battery-life and low-power connections with client devices. Such an embodiment may receive a communication via a low-power wireless connection to display media content on the display of the glasses. In response to the communication, the low-power circuitry will initiate a power up and boot of any specified elements, present the media content on the display of the device, and then automatically power down the display and associated circuitry to return to the low-power state after a fixed amount of time. Such operations may be integrated with any other operations and interrupts for any other elements included in the glasses with the display system.
Additionally, certain embodiments may not be glasses, but may be handheld camera devices, clothing attachments, watches, or any other such wearable device configured to capture camera data and communicate the data wirelessly to a client device. Additional details of example embodiments are described below.
Frame 32 additionally includes a left arm or temple piece 46 and a second arm or temple piece 47 coupled to the respective left and right end portions 41, 42 of the front piece 33 by any suitable means such as a hinge (not shown), so as to be coupled to the front piece 33, or rigidly or fixably secured to the front piece so as to be integral with the front piece 33. Each of the temple pieces 46 and 47 can include a first portion 51 that is coupled to the respective end portion 41 or 42 of the front piece 33 and any suitable second portion 52 for coupling to the ear of the user. In one embodiment the front piece 33 can be formed from a single piece of material, so as to have a unitary or integral construction. In one embodiment, such as illustrated in
Glasses 31 can include a computing device, such as computer 61, which can be of any suitable type so as to be carried by the frame 32 and, in one embodiment of a suitable size and shape, so as to be at least partially disposed in one of the temple pieces 46 and 47. In one embodiment, as illustrated in
The computer 61 additionally includes a battery 62 or other suitable portable power supply. In one embodiment, the battery 62 is disposed in one of the temple pieces 46 or 47. In the glasses 31 shown in
Glasses 31 include cameras 69. Although two cameras are depicted, other embodiments contemplate the use of a single or additional (i.e., more than two) cameras. In various embodiments, glasses 31 may include any number of input sensors or peripheral devices in addition to cameras 69. Front piece 33 is provided with an outward facing, forward-facing or front or outer surface 66 that faces forward or away from the user when the glasses 31 are mounted on the face of the user, and an opposite inward-facing, rearward-facing or rear or inner surface 67 that faces the face of the user when the glasses 31 are mounted on the face of the user. Such sensors can include inwardly-facing video sensors or digital imaging modules such as cameras that can be mounted on or provided within the inner surface 67 of the front piece 33 or elsewhere on the frame 32 so as to be facing the user, and outwardly-facing video sensors or digital imaging modules such as cameras 69 that can be mounted on or provided with the outer surface 66 of the front piece 33 or elsewhere on the frame 32 so as to be facing away from the user. Such sensors, peripheral devices or peripherals can additionally include biometric sensors, location sensors, or any other such sensors.
System 200 includes camera device 210, client device 290, and server system 298. Client device 290 may be a smartphone, tablet, phablet, laptop computer, access point, or any other such device capable of connecting with camera device 210 using both a low-power wireless connection 225 and a high-speed wireless connection 237. Client device 290 is connected to server system 298 and network 295. The network 295 may include any combination of wired and wireless connections. Server system 298 may be one or more computing devices as part of a service or network computing system. Client device 290 and any elements of server system 298 and network 295 may be implemented using details of software architecture 902 or machine 1100 described in
System 200 may optionally include additional peripheral device elements 219 and/or a display 211 integrated with camera device 210. Such peripheral device elements 219 may include biometric sensors, additional sensors, or display elements integrated with camera device 210. Examples of peripheral device elements 219 are discussed further with respect to
Camera device 210 includes camera 214, video processor 212, interface 216, low-power circuitry 220, and high-speed circuitry 230. Camera 214 includes digital camera elements such as a charge coupled device, a lens, or any other light capturing elements that may be used to capture data as part of camera 214.
Interface 216 refers to any source of a user command that is provided to camera device 210. In one implementation, interface 216 is a physical button on a camera that, when depressed, sends a user input signal from interface 216 to low power processor 222. A depression of such a camera button followed by an immediate release may be processed by low power processor 222 as a request to capture a single image. A depression of such a camera button for a first period of time may be processed by low-power processor 222 as a request to capture video data while the button is depressed, and to cease video capture when the button is released, with the video captured while the button was depressed stored as a single video file. In certain embodiments, the low-power processor 222 may have a threshold time period between the press of a button and a release, such as 500 milliseconds or one second, below which the button press and release is processed as an image request, and above which the button press and release is interpreted as a video request. The low power processor 222 may make this determination while the video processor 212 is booting. In other embodiments, the interface 216 may be any mechanical switch or physical interface capable of accepting user inputs associated with a request for data from the camera 214. In other embodiments, the interface 216 may have a software component, or may be associated with a command received wirelessly from another source.
Video processor 212 includes circuitry to receive signals from the camera 214 and process those signals from the camera 214 into a format suitable for storage in the memory 234. Video processor 212 is structured within camera device 210 such that it may be powered on and booted under the control of low-power circuitry 220. Video processor 212 may additionally be powered down by low-power circuitry 220. Depending on various power design elements associated with video processor 212, video processor 212 may still consume a small amount of power even when it is in an off state. This power will, however, be negligible compared to the power used by video processor 212 when it is in an on state, and will also have a negligible impact on battery life. As described herein, device elements in an “off” state are still configured within a device such that low-power processor 222 is able to power on and power down the devices. A device that is referred to as “off” or “powered down” during operation of camera device 210 does not necessarily consume zero power due to leakage or other aspects of a system design.
In one example embodiment, video processor 212 comprises a microprocessor integrated circuit (IC) customized for processing sensor data from camera 214, along with volatile memory used by the microprocessor to operate. In order to reduce the amount of time that video processor 212 takes when powering on to processing data, a non-volatile read only memory (ROM) may be integrated on the IC with instructions for operating or booting the video processor 212. This ROM may be minimized to match a minimum size needed to provide basic functionality for gathering sensor data from camera 214, such that no extra functionality that would cause delays in boot time are present. The ROM may be configured with direct memory access (DMA) to the volatile memory of the microprocessor of video processor 212. DMA allows memory-to-memory transfer of data from the ROM to system memory of the video processor 212 independently of operation of a main controller of video processor 212. Providing DMA to this boot ROM further reduces the amount of time from power on of the video processor 212 until sensor data from the camera 214 can be processed and stored. In certain embodiments, minimal processing of the camera signal from the camera 214 is performed by the video processor 212, and additional processing may be performed by applications operating on the client device 290 or server system 298.
Low-power circuitry 220 includes low-power processor 222 and low-power wireless circuitry 224. These elements of low-power circuitry 220 may be implemented as separate elements or may be implemented on a single IC as part of a system on a single chip. Low-power processor 222 includes logic for managing the other elements of the camera device 210. As described above, for example, low power processor 222 may accept user input signals from an interface 216. Low-power processor 222 may also be configured to receive input signals or instruction communications from client device 290 via low-power wireless connection 225. Additional details related to such instructions are described further below. Low-power wireless circuitry 224 includes circuit elements for implementing a low-power wireless communication system. Bluetooth™ Smart, also known as Bluetooth™ low energy, is one standard implementation of a low power wireless communication system that may be used to implement low-power wireless circuitry 224. In other embodiments, other low power communication systems may be used.
High-speed circuitry 230 includes high-speed processor 232, memory 234, and high-speed wireless circuitry 236. High-speed processor 232 may be any processor capable of managing high-speed communications and operation of any general computing system needed for camera device 210. High speed processor 232 includes processing resources needed for managing high-speed data transfers on high-speed wireless connection 237 using high-speed wireless circuitry 236. In certain embodiments, the high-speed processor 232 executes an operating system such as a LINUX operating system or other such operating system such as operating system 904 of
Memory 234 includes any storage device capable of storing camera data generated by the camera 214 and video processor 212. While memory 234 is shown as integrated with high-speed circuitry 230, in other embodiments, memory 234 may be an independent standalone element of the camera device 210. In certain such embodiments, electrical routing lines may provide a connection through a chip that includes the high-speed processor 232 from the video processor 212 or low-power processor 222 to the memory 234. In other embodiments, the high-speed processor 232 may manage addressing of memory 234 such that the low-power processor 222 will boot the high-speed processor 232 any time that a read or write operation involving memory 234 is needed.
As shown by method 300, a camera device 210 may have an off state 302. Such an off state 302 will occur when a battery or power system of camera device 210 reaches a critically low level. In such an off state 302, none of the elements of camera device 210 have power, and the camera device 210 is unable to communicate with any client device 290. In operation 304, when the camera device 210 is plugged in or otherwise receives a battery charge, the low-power circuitry 220 is booted in operation 306. This places the camera device 210 into low-power state 310.
In low-power state 310, low-power circuitry 220 performs a series of basic device operations. In operation 312, low-power circuitry 220 determines a battery level and maintains any wireless communications using low-power wireless circuitry 224. Any other low-power maintenance operations may also be performed, for example, powering and updating any light emitting diode (LED) status indicators. In operation 314, low-power circuitry 220 performs a power threshold check, comparing the amount of charge in a battery against the threshold. If the battery level is above the power threshold, the low power circuitry 220 will continue performing low-power state 310 operations. If the battery level is below the threshold, then low-power circuitry 220 will manage a complete camera device 210 shutdown in operation 316 to transition the camera device 210 to off state 302. Power processes of operation 316 may include transmitting emergency power alerts to any local client devices 290, managing memory 234 status prior to shut down, or any other such operations to protect the camera device 210 prior to complete loss of power.
In low-power state 310, maintenance operations 312 such as maintaining low power wireless communications may be performed in a variety of different ways. For example, in certain embodiments, low-power circuitry 220 may periodically transmit a service set identifier (SSID) using low-power wireless circuitry 224. Any local client devices 290 with appropriate access may receive the SSID and use this SSID to establish low-power wireless connection 225. In certain embodiments, such a low-power wireless connection 225 may be maintained by an application 910, service 922, or other aspects of a client device such as client 290 implementing software architecture 902 in conjunction with low-power wireless circuitry 224.
Once a connection with client device 290 is established, a variety of communication operations may be performed. Firmware or software updates to the camera device 210 may be received from the client device 290. Additionally, commands may be received at the camera device 210 from an application operating on the client device 290. In one embodiment, when a connection is first established, the establishing of the connection may be taken as a trigger or communication to automatically request a transfer of camera data to the connected client device. Alternatively, a communication may be initiated by the client device 290 or an application operating on client device 290 as part of operation 320.
Once such a communication or automatic check on connection occurs in operation 320, a new data check process 322 is performed by low-power processor 222. Such a check 322 may involve comparing aspects of camera data in memory 234 against the most recent data sent to the client device 290 using details communicated to the camera device 210 in operation 320. Such a check 322 may simply involve a record stored in the memory 234 or another memory location within the camera device 210 that keeps a history of data transfers. In other embodiments, camera data in the memory 234 may automatically be deleted upon transfer to a client device 290, and so the existence of any camera data within the memory 234 may be taken as an indication that new data is present and needs to be transferred to the client device 290 connected to the camera device 210 by low-power wireless connection 225. If no new data is present or identified by the performed check 322, then the camera device 210 simply resumes operations of low-power state 310.
If data to be transferred to client device 290 is identified, then low-power processor 222 initiates a power-on and boot of high-speed processor 232 in operation 324. In operation 326, high-speed processor 232 is then used to power on high-speed wireless circuitry 236. The high-speed processor 232 then uses the high-speed wireless circuitry 236 to establish a high-speed wireless connection 237 with client device 290 in operation 328. Camera data from the memory 234 is then transferred from the camera device 210 to the client device 290. This transfer completes in operation 330, and then in operation 332, the high-speed processor 232 and the high-speed wireless circuitry 236 are both automatically powered down following completion of the data transfer. This power-down process is managed by low-power processor 222, and following this power down in operation 332, the camera device 210 returns to the low-power state 310.
While these operations of low-power state 310 transitioning to a high-power state for an operation at the direction of a client device 290 followed by return to low-power state 310 after completion of the operation are described here only in the context of data transfer, it will be understood that various embodiments may implement additional operations on the camera device 210 which will consume power. A battery of the camera device 210 may be designed to maintain low-power state 310 for several weeks or more. Operations such as the data transfer described above as well as other operations that may begin from low-power state 310 and use additional operations may drain the battery much more quickly than low-power state 310. Any such operations initiated by a client device 290 are considered part of processes 301. According to the embodiment of method 300, any of these processes 301 may be interrupted by a user input signal received from an interface 216.
In state 350, a user input is received at the interface 216 of the camera device 210. One example of a user input is a button press on a button of the camera device 210. This user input at the interface 216 generates a user input signal which is transmitted to the low-power processor 222 in operation 351. In order to provide a responsive experience to a user that generated the action at the interface 216, low power processor 222, upon receiving the input signal, interrupts any of the processes 301 in operation 352. In operation 354, the low-power processor 222 initiates a boot of video processor 212, and camera 214 is provided power. In operation 356, the video processor 212 captures camera data from the camera 214 and writes this camera data to memory 234. The camera data captured from the camera 214 is responsive to the particular user input received at the interface 216. If a picture is requested, operation 356 will capture a signal image. If a video is requested, the capturing of camera data in operation 356 will continue as long as the interface 216 indicates that the user is requesting video, or until the memory 234 is full.
In certain embodiments, if either low-power wireless connection 225 or high-speed wireless connection 237 are present when the amount of free space in memory 234 reaches a sufficiently low level, the low-power processor 222 may attempt to send a warning or error communication to a client device 290. In other embodiments, an audio signal or other indicator signal may provide such a warning on camera device 210.
Once the data capture and writing of the camera data to memory 234 is complete, any interrupted processes of processes 301 are resumed in operation 358. In operation 360, the video processor 212 and the camera 214 are powered down. Camera device 210 then returns to low-power state 310.
In response to the user input signal received at the low-power processor 222, the video processor 212 is booted in operation 406. In one example embodiment, this boot process involves the low-power processor 222 sending a command to provide power to the video processor 212. The low-power processor 222 will then send a command for a ROM of the video processor 212 to write boot instructions directly to a processor memory of the video processor 212.
The video processor 212 may then capture first camera data from the camera 214 in operation 408. The video processor 212 may then write the first camera data to the memory 234 in operation 410. In operation 412, the low power processor 222 manages the automatic power down of the video processor 212 after the first camera data is written to the memory 234.
Method 400 limits the amount of time from receipt of the input in operation to the capture of camera data in operation 408, while also limiting the amount of time spent with the video processor 212 using power. In certain embodiments, this time period may be 300 milliseconds, or on the order of half a second or less. Such a time delay provides a user with an experience of being able to use an interface when the camera device is in a low power mode, while capturing data in a period of time that is not much longer than the amount of time to press a button. Such a system thus provides a power benefit where power usage is reduced to an extremely low level with a low-power state while still providing the responsiveness of an on state due to the use of the low-power processor 222 to initiate a fast boot of the video processor 212.
As illustrated by method 300, method 400 may then be followed by various other operations. For example, after a capture of the first camera data, any number of additional data captures may be performed until the memory 234 is full. Additionally, a connection with a client device 290 may be made to transfer the first camera data to the client device 290. During such a transfer, if another user input is received, the data transfer may be interrupted for a subsequent capture of additional camera data using operations 402 through 412. After the subsequent camera data capture is complete, the interrupted process is resumed. All of these processes, including camera data capture, data transmission, connection to a client device, and any other such operations, may be managed automatically by low-power processor 222, with the low-power processor 222 automatically shutting down other elements of camera device 210 when each operation is complete in order to reduce power usage and extend the life of a single battery charge.
In one embodiment, the optical assembly 566 includes any suitable display matrix 567. Such a display matrix 567 can be of any suitable type, such as a liquid crystal display (LCD), an organic light-emitting diode (OLED) display, or any other such display. The optical assembly 566 also includes an optical layer or layers 568, which can be include lenses, optical coatings, prisms, mirrors, waveguides, and other optical components in any combination. In the embodiment illustrated in
Glasses 561 can include any suitable computing system, including any of the computing devices disclosed herein, such as computer 61 or machine 1100. In the embodiment of
Computer 576 is implemented using the processor elements of the camera device 210, including video processor 212, high-speed circuitry 230, and low-power circuitry 220. Computer 576 may additionally include any circuitry needed to power and process information for display matrix 567, which may be similar to display 211. In certain embodiments, video processor 212 or high-speed processor 232 may include circuitry to drive display matrix 567. In other embodiments, separate display circuitry may be integrated with the other elements of computer 576 to enable presentation of images on display matrix 567.
Glasses 691 includes computer 601, and just as with computer 576, computer 601 may be implemented using the processor elements of camera device 210, including video processor 212, high-speed circuitry 230, and low-power circuitry 220, and computer 601 may additionally include any circuitry needed to power and process information for the integrated display elements.
Sensors 602 include one or more cameras, which may be similar to camera 214 and/or other digital sensors that face outward, away from the user. The data feeds from these sensors 602 go to computer 601. In the embodiment of
Glasses 691 include optical elements or assemblies 605, which may be similar to any other optical elements or assemblies described herein. One optical assembly 605 is shown, but in other embodiments, optical assemblies may be provided for both eyes of a user. Optical assembly 605 includes laser projector 607, which is a three-color laser projector using a scanning mirror or galvanometer. During operation, an optical source such as a laser projector is disposed in one of the arms or temples of the glasses, and is shown in right temple piece 47 of glasses 691. The computer 601 connects to the laser projector 607. The optical assembly 605 includes one or more optical strips 611. The optical strips 611 are spaced apart across the width of lens 692, as illustrated by lens 692 in right optical element holder 37 of
During operation, computer 601 sends data to laser projector 607. A plurality of light paths 612 are depicted, showing the paths of respective photons emitted by the laser projector 607. The path arrows illustrate how lenses or other optical elements direct the photons on paths 612 that take the photons from the laser projector 607 to the lens 692. As the photons then travel across the lens 692, the photons encounter a series of optical strips 611. When a particular photon encounters a particular optical strip 611, it is either redirected towards the user's eye, or it passes to the next optical strip 611. Specific photons or beams of light may be controlled by a combination of modulation of laser projector 607 and modulation of optical strips 611. Optical strips 611 may, in certain embodiments, be controlled through mechanical, acoustic, or electromagnetic signals initiated by computer 601.
In one example implementation of the optical strips 611, each strip 611 can use Polymer Dispersed Liquid Crystal to be opaque or transparent at a given instant of time, per software command from computer 601. In a different example implementation of the optical strips 611, each optical strip 611 can have a specific wavelength of light that it redirects toward the user, passing all the other wavelengths through to the next optical strip 611. In a different example implementation of the optical strips 611, each strip 611 can have certain regions of the strip 611 that cause redirection with other regions passing light, and the laser projector 607 can use high precision steering of the light beams to target the photons at the desired region of the particular intended optical strip 611.
In the embodiment of lens 692 illustrated in the top left of
During the standard operation 712 of low-power state 710, if the camera device 210 is connected with a client device 290, the camera device 210 may use the low-power processor 222 and low-power wireless circuitry 224 to communicate a battery state to the client device 290. An application operating on the client device 290 may present this battery state information to the user. Similarly, operation 712 may monitor memory 234 details including content present in the memory 234 and an available amount of memory within the memory 234. This information may also be communicated to the client device 290 during low-power state 710 operations of low-power circuitry 220.
In operation 720, the camera device 210 receives a communication from the client device 290 with an instruction to display information on a display 211 of the camera device 210. Such a display communication may be initiated by any application such as any application 910 operating on a client device 290 which is implementing some or all of software architecture 902. For example, location application 958 may include systems for providing map information and directions to a user of client device 290. As part of the operation of the location application 958, visual direction information may be sent to the camera device 210 using camera device application 967. This direction information may be initiated when camera device application 967 and location application 958 determine that a low-power wireless connection 225 exists between the client device 290 and camera device 210. In certain embodiments, user settings input to a user interface of client device 290 may be used to determine when the camera device application 967 will provide such a visual direction information to the camera device 210. Other embodiments may provide visual messages to the camera device 210 using a messaging application 962. Still further embodiments may provide visual game information, book information, web browser information, contacts information, images or videos, or any other such content data as part of any application 910.
After the initial display communication is received from an application operating on client device 290 in operation 720, the low-power processor 222 boots high-speed processor 232 in operation 722. In operation 724, the camera device 210 then determines whether or not the data associated with the display communication is already present in the memory 234 of camera device 210, or whether this information needs to be retrieved. This determination may be made by logic elements of low-power processor 222, by logic operating on high-speed processor 232, or by any other logic operating on the camera device 210. In other embodiments, the initial display communication from the client device 290 may identify a source of the content to be presented on the display 211.
If the camera device 210 determines that the data is not present in the memory 234 or anywhere else on the camera device 210, then in operation 726, the high-speed processor 232 turns on the high-speed wireless circuitry 236. In operation 728, the client device 290 connects to the high-speed wireless circuitry 236 to form high-speed wireless connection 237. Transfer of the data is completed in operation 730 using high-speed wireless connection 237. After the data is transferred, high-speed wireless circuitry 236 is powered down in operation 732. In operation 734, high-speed processor 232 then loads the retrieved data for display in operation 734. Operation 734 will also occur immediately after operation 724 if the camera device 210 determines that the data for display on the display 211 is already present in the memory 234.
In operation 736, the display 211 is powered on. While the method 700 shows operation 736 occurring serially after data is transferred and high-speed wireless circuitry 236 powered down when the data is transferred from client device 290, in certain embodiments, the data may be streamed such that the display 211 turns on in operation 736 and the subsequent display operations occur while data is being transferred from the client device 292 camera device 210 using high-speed wireless connection 237.
After the display 211 is turned on in operation 736, the display 211 presents the data for a set period of time in operation 738. For example, if direction information is being displayed on display 211, the system 200 will determine that the direction information is to be displayed for a fixed period of time, for example five seconds. After the information has been displayed for the predetermined amount of time, the display 211 is automatically powered off in operation 740. The high-speed processor 232 is then powered down in operation 742 after the display of data is complete, and the camera device 210 returns to low-power state 710 where the display 211 is powered down, the high-speed circuitry 230 is powered down, and the low-power circuitry 220 is maintaining low-power wireless communications and battery monitoring as well as any other low-power processes.
In certain embodiments, the set period of time for data display may be determined in conjunction with other applications operating on the client device 290. For example, in the location data embodiment, a positioning system operating on either client device 290 or camera device 210 may determine that the physical location of the user is approaching a location associated with a direction. This may, for example, be an instruction for the user to make a turn or to otherwise follow a set of directions. The location data being presented on the display 211 may include map information or text information prompting the user to follow the path presented by the direction information. Once the user has follow the directions, and the positioning system determines that the direction has been followed, the information displayed on display 211 may be removed, and the system 200 may return to low-power state 710 in response to this determination. In other embodiments, other such triggers from various applications 910 may be used to determine the display time. In each instance, following the display time, the display 211 will be powered down and the camera device 210 will return to low-power state 710.
While the methods described above present operations in a particular order, it will be appreciated that alternate embodiments may operate with certain operations occurring simultaneously or in a different order. In many such embodiments, the order and timing of operations may vary between instances of the operation, with the exact timing managed by a low-power processor such as the low-power processor 222 operating to reduce power usage, and to return the device to a low-power state as quickly as possible.
Certain embodiments are described herein as including logic or a number of components, modules, elements, or mechanisms. Such modules can constitute either software modules (e.g., code embodied on a machine-readable medium or in a transmission signal) or hardware modules. A “hardware module” is a tangible unit capable of performing certain operations and can be configured or arranged in a certain physical manner. In various example embodiments, one or more computer systems (e.g., a standalone computer system, a client computer system, or a server computer system) or one or more hardware modules of a computer system (e.g., a processor or a group of processors) is configured by software (e.g., an application or application portion) as a hardware module that operates to perform certain operations as described herein.
In some embodiments, a hardware module is implemented mechanically, electronically, or any suitable combination thereof. For example, a hardware module can include dedicated circuitry or logic that is permanently configured to perform certain operations. For example, a hardware module can be a special-purpose processor, such as a Field-Programmable Gate Array (FPGA) or an Application Specific Integrated Circuit (ASIC). A hardware module may also include programmable logic or circuitry that is temporarily configured by software to perform certain operations. For example, a hardware module can include software encompassed within a general-purpose processor or other programmable processor. It will be appreciated that the decision to implement a hardware module mechanically, in dedicated and permanently configured circuitry, or in temporarily configured circuitry (e.g., configured by software) can be driven by cost and time considerations.
Accordingly, the phrase “hardware module” should be understood to encompass a tangible entity, be that an entity that is physically constructed, permanently configured (e.g., hardwired), or temporarily configured (e.g., programmed) to operate in a certain manner or to perform certain operations described herein. As used herein, “hardware-implemented module” refers to a hardware module. Considering embodiments in which hardware modules are temporarily configured (e.g., programmed), each of the hardware modules need not be configured or instantiated at any one instance in time. For example, where a hardware module comprises a general-purpose processor configured by software to become a special-purpose processor, the general-purpose processor may be configured as respectively different special-purpose processors (e.g., comprising different hardware modules) at different times. Software can accordingly configure a particular processor or processors, for example, to constitute a particular hardware module at one instance of time and to constitute a different hardware module at a different instance of time.
Hardware modules can provide information to, and receive information from, other hardware modules. Accordingly, the described hardware modules can be regarded as being communicatively coupled. Where multiple hardware modules exist contemporaneously, communications can be achieved through signal transmission (e.g., over appropriate circuits and buses) between or among two or more of the hardware modules. In embodiments in which multiple hardware modules are configured or instantiated at different times, communications between such hardware modules may be achieved, for example, through the storage and retrieval of information in memory structures to which the multiple hardware modules have access. For example, one hardware module performs an operation and stores the output of that operation in a memory device to which it is communicatively coupled. A further hardware module can then, at a later time, access the memory device to retrieve and process the stored output. Hardware modules can also initiate communications with input or output devices, and can operate on a resource (e.g., a collection of information).
The various operations of example methods described herein can be performed, at least partially, by one or more processors that are temporarily configured (e.g., by software) or permanently configured to perform the relevant operations. Whether temporarily or permanently configured, such processors constitute processor-implemented modules that operate to perform one or more operations or functions described herein. As used herein, “processor-implemented module” refers to a hardware module implemented using one or more processors.
Similarly, the methods described herein can be at least partially processor-implemented, with a particular processor or processors being an example of hardware. For example, at least some of the operations of a method can be performed by one or more processors or processor-implemented modules. Moreover, the one or more processors may also operate to support performance of the relevant operations in a “cloud computing” environment or as a “software as a service” (SaaS). For example, at least some of the operations may be performed by a group of computers (as examples of machines including processors), with these operations being accessible via a network (e.g., the Internet) and via one or more appropriate interfaces (e.g., an Application Program Interface (API)).
The performance of certain of the operations may be distributed among the processors, not only residing within a single machine, but deployed across a number of machines. In some example embodiments, the processors or processor-implemented modules are located in a single geographic location (e.g., within a home environment, an office environment, or a server farm). In other example embodiments, the processors or processor-implemented modules are distributed across a number of geographic locations.
In various implementations, the operating system 904 manages hardware resources and provides common services. The operating system 904 includes, for example, a kernel 920, services 922, and drivers 924. The kernel 920 acts as an abstraction layer between the hardware and the other software layers consistent with some embodiments. For example, the kernel 920 provides memory management, processor management (e.g., scheduling), component management, networking, and security settings, among other functionality. The services 922 can provide other common services for the other software layers. The drivers 924 are responsible for controlling or interfacing with the underlying hardware, according to some embodiments. For instance, the drivers 924 can include display drivers, camera drivers, BLUETOOTH® or BLUETOOTH® Low Energy drivers, flash memory drivers, serial communication drivers (e.g., Universal Serial Bus (USB) drivers), WI-FI® drivers, audio drivers, power management drivers, and so forth. In certain implementations of a device such as the camera device 210, low-power circuitry may operate using drivers 924 that only contain BLUETOOTH® Low Energy drivers and basic logic for managing communications and controlling other devices, with other drivers operating with high-speed circuitry.
In some embodiments, the libraries 906 provide a low-level common infrastructure utilized by the applications 910. The libraries 906 can include system libraries 930 (e.g., C standard library) that can provide functions such as memory allocation functions, string manipulation functions, mathematic functions, and the like. In addition, the libraries 906 can include API libraries 932 such as media libraries (e.g., libraries to support presentation and manipulation of various media formats such as Moving Picture Experts Group-4 (MPEG4), Advanced Video Coding (H.264 or AVC), Moving Picture Experts Group Layer-3 (MP3), Advanced Audio Coding (AAC), Adaptive Multi-Rate (AMR) audio codec, Joint Photographic Experts Group (JPEG or JPG), or Portable Network Graphics (PNG)), graphics libraries (e.g., an OpenGL framework used to render in two dimensions (2D) and three dimensions (3D) in a graphic content on a display), database libraries (e.g., SQLite to provide various relational database functions), web libraries (e.g., WebKit to provide web browsing functionality), and the like. The libraries 906 can also include a wide variety of other libraries 934 to provide many other APIs to the applications 910.
The frameworks 908 provide a high-level common infrastructure that can be utilized by the applications 910, according to some embodiments. For example, the frameworks 908 provide various graphic user interface (GUI) functions, high-level resource management, high-level location services, and so forth. The frameworks 908 can provide a broad spectrum of other APIs that can be utilized by the applications 910, some of which may be specific to a particular operating system or platform.
In an example embodiment, the applications 910 include a home application 950, a contacts application 952, a browser application 954, a book reader application 956, a location application 958, a media application 960, a messaging application 962, a game application 964, and a broad assortment of other applications such as a third party application 966. According to some embodiments, the applications 910 are programs that execute functions defined in the programs. Various programming languages can be employed to create one or more of the applications 910, structured in a variety of manners, such as object-oriented programming languages (e.g., Objective-C, Java, or C++) or procedural programming languages (e.g., C or assembly language). In a specific example, the third party application 966 (e.g., an application developed using the ANDROID™ or IOS™ software development kit (SDK) by an entity other than the vendor of the particular platform) may be mobile software running on a mobile operating system such as IOS™, ANDROID™, WINDOWS® Phone, or another mobile operating systems. In this example, the third party application 966 can invoke the API calls 912 provided by the operating system 904 to facilitate functionality described herein.
Embodiments described herein may particularly interact with a camera device application 967. Such an application 967 may interact with I/O components 1150 to establish various wireless connections with devices such as the camera device 210, and to present details of the camera device 210 to a user of the machine 1100. Camera device application 967 may communicate with the camera device 210 to automatically request that camera data be transferred from the camera device 210 to the machine 1100. For example, when camera device application 967 is first opened on the machine 1100, the application 967 may automatically check for the availability of a low-power wireless connection 225 to the camera device 210. If no such connection 225 is available, the camera device application 967 may still provide additional functionality, for example operating as a social network communication application with images or video that have either been previously downloaded from the camera device 210 or captured a camera of client device 290. If, however, low-power wireless connection 225 is available when camera device application 967 is first started, then the camera device application 967 checks to see if files need to be transferred from the camera device 210 to the machine 1100. If not, the camera device application 967 may send a communication over the low-power wireless connection 225 instructing the camera device 210 to maintain a low power state. If camera data is available on the camera device 210 for transfer to the machine 1100, the camera device application 967 checks to see if a high-speed wireless connection 237 is also available to the camera device 210. If no such connection 237 is available, the camera device application 967 may prompt the user to enable such a connection using settings of the machine 1100. The camera device application 967 may then continue checking for the availability of a high-speed wireless connection 237. When such a connection 237 is available on the machine 1100, camera device application 967 sends instructions to the camera device 210 to turn on the high-speed wireless circuitry 236. If a connection is unsuccessful, the camera device application 967 continues attempting to connect via high-speed wireless connection 237, and may instruct the camera device 210 to turn off high-speed wireless circuitry 236 until a new high-speed wireless connection is available. If a connection is successful between the camera device 210 and machine 1100, the data is transferred to the machine 1100 and the camera device application 967 then instructs the camera device 210 to return to a low-power mode. Such a connection method relies on and is controlled by camera device application 967 operating on the machine 1100.
In alternate embodiments, such a connection may be managed and controlled by the camera device 210 communicating with the machine 1100 operating as a client device 290 in a system 200. In such an embodiment, when camera device 210 captures camera data, the data is stored to memory 234, and the low-power processor 222 may check to see if a low-power wireless connection 225 is available. If not, the camera device 210 maintains a low-power state with periodic checks for a low-power wireless connection 225. If a low-power wireless connection 225 is available when a check is performed by low-power processor 222, the low-power processor 222 may communicate a request to client device 290 asking whether low-power processor 222 should turn on high-speed wireless circuitry 236. If no response or a negative response is received from client device 290 operating a camera device application 967, then the camera device 210 maintains a low-power state. If a response is received from camera device application 967 indicating that high-speed wireless circuitry 236 should be turned on, then high-speed processor 232 and high-speed wireless circuitry 236 are turned on. An attempt for a high-speed wireless connection 237 is made. If the attempt to establish the high-speed wireless connection 237 is unsuccessful after a certain number of tries or certain period of time, the camera device 210 will return to a low-power state. If the high-speed wireless connection 237 is successful, the files are transferred, and upon completion of file transfer, the high-speed circuitry 230 is turned off and camera device 210 returns to a low-power state.
Thus, in various embodiments, either a camera device or an associated client device may initiate a data transfer. Additionally, in certain embodiments, the camera device application 967 may work with any other application described herein to manage communication of camera data and display content data with the camera device 210, or to perform various operations compatible with particular embodiments.
Many varieties of applications (also referred to as “apps”) can be executing on the mobile device 1000, such as native applications (e.g., applications programmed in Objective-C, Swift, or another suitable language running on IOS™, or applications programmed in Java running on ANDROID™), mobile web applications (e.g., applications written in Hypertext Markup Language-5 (HTML5)), or hybrid applications (e.g., a native shell application that launches an HTML5 session). For example, the mobile device 1000 includes a messaging app, an audio recording app, a camera app, a book reader app, a media app, a fitness app, a file management app, a location app, a browser app, a settings app, a contacts app, a telephone call app, or other apps (e.g., gaming apps, social networking apps, biometric monitoring apps). In another example, the mobile device 1000 includes a social messaging app such as SNAPCHAT® that, consistent with some embodiments, allows users to exchange ephemeral messages that include media content. In this example, the social messaging app can incorporate aspects of embodiments described herein.
Such a social messaging application may integrate the functionality of the camera device application 967 to automatically integrate camera data from the camera device 210 into the social messaging application. Mobile device 1000 of
When mobile device 1000 connects with a camera device 210 to download camera data 1001 from the camera device 210, the list of data including camera data 1001 may be updated to include new images and videos from camera device 210. Additionally, the mobile device 1000 may include a user interface that receives status information from the camera device 210, including battery data, memory use data, or any other such status information available from the camera device 210.
In various embodiments, the machine 1100 comprises processors 1110, memory 1130, and I/O components 1150, which can be configured to communicate with each other via a bus 1102. In an example embodiment, the processors 1110 (e.g., a Central Processing Unit (CPU), a Reduced Instruction Set Computing (RISC) processor, a Complex Instruction Set Computing (CISC) processor, a Graphics Processing Unit (GPU), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Radio-Frequency Integrated Circuit (RFIC), another processor, or any suitable combination thereof) include, for example, a processor 1112 and a processor 1114 that may execute the instructions 1116. The term “processor” is intended to include multi-core processors that may comprise two or more independent processors (also referred to as “cores”) that can execute instructions contemporaneously. Although
The memory 1130 comprises a main memory 1132, a static memory 1134, and a storage unit 1136 accessible to the processors 1110 via the bus 1102, according to some embodiments. The storage unit 1136 can include a machine-readable medium 1138 on which are stored the instructions 1116 embodying any one or more of the methodologies or functions described herein. The instructions 1116 can also reside, completely or at least partially, within the main memory 1132, within the static memory 1134, within at least one of the processors 1110 (e.g., within the processor's cache memory), or any suitable combination thereof, during execution thereof by the machine 1100. Accordingly, in various embodiments, the main memory 1132, the static memory 1134, and the processors 1110 are considered machine-readable media 1138.
As used herein, the term “memory” refers to a machine-readable medium 1138 able to store data temporarily or permanently and may be taken to include, but not be limited to, random-access memory (RAM), read-only memory (ROM), buffer memory, flash memory, and cache memory. While the machine-readable medium 1138 is shown in an example embodiment to be a single medium, the term “machine-readable medium” should be taken to include a single medium or multiple media (e.g., a centralized or distributed database, or associated caches and servers) able to store the instructions 1116. The term “machine-readable medium” shall also be taken to include any medium, or combination of multiple media, that is capable of storing instructions (e.g., instructions 1116) for execution by a machine (e.g., machine 1100), such that the instructions, when executed by one or more processors of the machine 1100 (e.g., processors 1110), cause the machine 1100 to perform any one or more of the methodologies described herein. Accordingly, a “machine-readable medium” refers to a single storage apparatus or device, as well as “cloud-based” storage systems or storage networks that include multiple storage apparatus or devices. The term “machine-readable medium” shall accordingly be taken to include, but not be limited to, one or more data repositories in the form of a solid-state memory (e.g., flash memory), an optical medium, a magnetic medium, other non-volatile memory (e.g., Erasable Programmable Read-Only Memory (EPROM)), or any suitable combination thereof. The term “machine-readable medium” specifically excludes non-statutory signals per se.
The I/O components 1150 include a wide variety of components to receive input, provide output, produce output, transmit information, exchange information, capture measurements, and so on. In general, it will be appreciated that the I/O components 1150 can include many other components that are not shown in
In some further example embodiments, the I/O components 1150 include biometric components 1156, motion components 1158, environmental components 1160, or position components 1162, among a wide array of other components. For example, the biometric components 1156 include components to detect expressions (e.g., hand expressions, facial expressions, vocal expressions, body gestures, or eye tracking), measure biosignals (e.g., blood pressure, heart rate, body temperature, perspiration, or brain waves), identify a person (e.g., voice identification, retinal identification, facial identification, fingerprint identification, or electroencephalogram based identification), and the like. The motion components 1158 include acceleration sensor components (e.g., accelerometer), gravitation sensor components, rotation sensor components (e.g., gyroscope), and so forth. The environmental components 1160 include, for example, illumination sensor components (e.g., photometer), temperature sensor components (e.g., one or more thermometers that detect ambient temperature), humidity sensor components, pressure sensor components (e.g., barometer), acoustic sensor components (e.g., one or more microphones that detect background noise), proximity sensor components (e.g., infrared sensors that detect nearby objects), gas sensor components (e.g., machine olfaction detection sensors, gas detection sensors to detect concentrations of hazardous gases for safety or to measure pollutants in the atmosphere), or other components that may provide indications, measurements, or signals corresponding to a surrounding physical environment. The position components 1162 include location sensor components (e.g., a Global Positioning System (GPS) receiver component), altitude sensor components (e.g., altimeters or barometers that detect air pressure from which altitude may be derived), orientation sensor components (e.g., magnetometers), and the like.
Communication can be implemented using a wide variety of technologies. The I/O components 1150 may include communication components 1164 operable to couple the machine 1100 to a network 1180 or devices 1170 via a coupling 1182 and a coupling 1172, respectively. For example, the communication components 1164 include a network interface component or another suitable device to interface with the network 1180. In further examples, communication components 1164 include wired communication components, wireless communication components, cellular communication components, Near Field Communication (NFC) components, BLUETOOTH® components (e.g., BLUETOOTH® Low Energy), WI-FI® components, and other communication components to provide communication via other modalities. The devices 1170 may be another machine or any of a wide variety of peripheral devices (e.g., a peripheral device coupled via a Universal Serial Bus (USB)).
Moreover, in some embodiments, the communication components 1164 detect identifiers or include components operable to detect identifiers. For example, the communication components 1164 include Radio Frequency Identification (RFID) tag reader components, NFC smart tag detection components, optical reader components (e.g., an optical sensor to detect a one-dimensional bar codes such as a Universal Product Code (UPC) bar code, multi-dimensional bar codes such as a Quick Response (QR) code, Aztec Code, Data Matrix, Dataglyph, MaxiCode, PDF417, Ultra Code. Uniform Commercial Code Reduced Space Symbology (UCC RSS)-2D bar codes, and other optical codes), acoustic detection components (e.g., microphones to identify tagged audio signals), or any suitable combination thereof. In addition, a variety of information can be derived via the communication components 1164, such as location via Internet Protocol (IP) geo-location, location via WI-FI® signal triangulation, location via detecting an BLUETOOTH® or NFC beacon signal that may indicate a particular location, and so forth.
Transmission Medium
In various example embodiments, one or more portions of the network 1180 can be an ad hoc network, an intranet, an extranet, a virtual private network (VPN), a local area network (LAN), a wireless LAN (WLAN), a wide area network (WAN), a wireless WAN (WWAN), a metropolitan area network (MAN), the Internet, a portion of the Internet, a portion of the Public Switched Telephone Network (PSTN), a plain old telephone service (POTS) network, a cellular telephone network, a wireless network, a WI-FI® network, another type of network, or a combination of two or more such networks. For example, the network 1180 or a portion of the network 1180 may include a wireless or cellular network, and the coupling 1182 may be a Code Division Multiple Access (CDMA) connection, a Global System for Mobile communications (GSM) connection, or another type of cellular or wireless coupling. In this example, the coupling 1182 can implement any of a variety of types of data transfer technology, such as Single Carrier Radio Transmission Technology (1×RTT), Evolution-Data Optimized (EVDO) technology, General Packet Radio Service (GPRS) technology, Enhanced Data rates for GSM Evolution (EDGE) technology, third Generation Partnership Project (3GPP) including 3G, fourth generation wireless (4G) networks, Universal Mobile Telecommunications System (UMTS), High Speed Packet Access (HSPA), Worldwide Interoperability for Microwave Access (WiMAX), Long Term Evolution (LTE) standard, others defined by various standard-setting organizations, other long range protocols, or other data transfer technology.
In example embodiments, the instructions 1116 are transmitted or received over the network 1180 using a transmission medium via a network interface device (e.g., a network interface component included in the communication components 1164) and utilizing any one of a number of well-known transfer protocols (e.g., Hypertext Transfer Protocol (HTTP)). Similarly, in other example embodiments, the instructions 1116 are transmitted or received using a transmission medium via the coupling 1172 (e.g., a peer-to-peer coupling) to the devices 1170. The term “transmission medium” shall be taken to include any intangible medium that is capable of storing, encoding, or carrying the instructions 1116 for execution by the machine 1100, and includes digital or analog communications signals or other intangible media to facilitate communication of such software.
Furthermore, the machine-readable medium 1138 is non-transitory (in other words, not having any transitory signals) in that it does not embody a propagating signal. However, labeling the machine-readable medium 1138 “non-transitory” should not be construed to mean that the medium is incapable of movement; the medium 1138 should be considered as being transportable from one physical location to another. Additionally, since the machine-readable medium 1138 is tangible, the medium 1138 may be considered to be a machine-readable device.
Language
Throughout this specification, plural instances may implement components, operations, or structures described as a single instance. Although individual operations of one or more methods are illustrated and described as separate operations, one or more of the individual operations may be performed concurrently, and nothing requires that the operations be performed in the order illustrated. Structures and functionality presented as separate components in example configurations may be implemented as a combined structure or component. Similarly, structures and functionality presented as a single component may be implemented as separate components. These and other variations, modifications, additions, and improvements fall within the scope of the subject matter herein.
Although an overview of the inventive subject matter has been described with reference to specific example embodiments, various modifications and changes may be made to these embodiments without departing from the broader scope of embodiments of the present disclosure. Such embodiments of the inventive subject matter may be referred to herein, individually or collectively, by the term “invention” merely for convenience and without intending to voluntarily limit the scope of this application to any single disclosure or inventive concept if more than one is, in fact, disclosed.
The embodiments illustrated herein are described in sufficient detail to enable those skilled in the art to practice the teachings disclosed. Other embodiments may be used and derived therefrom, such that structural and logical substitutions and changes may be made without departing from the scope of this disclosure. The Detailed Description, therefore, is not to be taken in a limiting sense, and the scope of various embodiments is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled.
As used herein, the term “or” may be construed in either an inclusive or exclusive sense. Moreover, plural instances may be provided for resources, operations, or structures described herein as a single instance. Additionally, boundaries between various resources, operations, modules, engines, and data stores are somewhat arbitrary, and particular operations are illustrated in a context of specific illustrative configurations. Other allocations of functionality are envisioned and may fall within a scope of various embodiments of the present disclosure. In general, structures and functionality presented as separate resources in the example configurations may be implemented as a combined structure or resource. Similarly, structures and functionality presented as a single resource may be implemented as separate resources. These and other variations, modifications, additions, and improvements fall within a scope of embodiments of the present disclosure as represented by the appended claims. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
This application is a continuation of and claims the benefit of priority of U.S. patent application Ser. No. 15/620,260, filed Jun. 12, 2017 and entitled “SYSTEMS AND METHODS FOR REDUCING BOOT TIME AND POWER CONSUMPTION IN WEARABLE DISPLAY ITEMS,” which is a continuation of U.S. patent application Ser. No. 14/744,832, filed on Jun. 19, 2015, which is a continuation of and claims the benefit of priority of U.S. patent application Ser. No. 14/665,964, filed on Mar. 23, 2015. The contents of these prior applications are considered part of this application, and are hereby incorporated by reference in their entirety.
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