Patent Application
20120208605
1. Background Field
The present invention relates to peripherals of mobile devices.
2. Relevant Background
Mobile devices, such as a cellular or other wireless communication device, personal communication system (PCS) device, personal navigation device (PND), Personal Information Manager (PIM), Personal Digital Assistant (PDA), portable video games, MP3 players, and portable computers, have become common place. The worldwide installed base of mobile devices likely exceeds several billions. Many mobile devices are capable of receiving wireless communication and/or navigation signals. The term mobile device is also intended to include devices which communicate with a personal navigation device (PND), such as by short-range wireless, infrared, wireline connection, or other connection—regardless of whether satellite signal reception, assistance data reception, and/or position-related processing occurs at the device or at the PND. Also, mobile device is intended to include all devices, including wireless communication devices, computers, laptops, etc. which are capable of communication with a server, such as via the Internet, Wi-Fi, or other network, and regardless of whether satellite signal reception, assistance data reception, and/or position-related processing occurs at the device, at a server, or at another device associated with the network. Any operable combination of the above are also considered a “mobile device.”
For example, if mobile device 100 is a cell phone, user interface 150 could be a numeric keypad, audio unit 140 would include an audio circuits, a microphone and a speaker, and display unit 130 would generally be a small screen, such as a liquid crystal display (LCD) or an organic light emitting diode (OLED) display. If mobile device 100 were a portable video game, user interface 150 would likely be a joystick and several buttons, audio unit 140 would include audio circuits and a speaker, and display unit 130 would again be a small screen. In some mobile devices, display unit 130 and user interface 150 could be combined as a touch screen.
Communication system 160 uses antenna 170 to transmit and receive data from external transceivers. For example, if mobile device 100 is a cell phone, communication system 160 would be configured to interface with cellular base stations. If mobile device 100 is a portable computer, communication system 160 would likely be configured for Wi-Fi networks.
Many mobile devices also include standard interface 180. Standard interfaces are points of interconnection between mobile device 100 and peripherals, in which the physical, electrical and logical parameters adhere to an industry accepted definition. Standard interface 180 is often used as a memory interface to allow for memory expansion using standardized memory cards such as Secure Digital (SD) memory Cards, Micro-SD memory cards, or compact flash memory cards. Some mobile devices may include other standard interface ports such as Universal Serial Bus (USB), Subscriber Identity Module (SIM), Removable User Identity Module (RUIM), or Universal Asynchronous receiver/transmitter (UART). As technology advances additional standard interfaces are defined to incorporate the new technology.
As technology in other areas evolve, new features can be included into mobile devices. However, the large installed base of mobile devices can not make use of these new features. Hence there is a need for a method and system for adding new technology to conventional mobile devices.
Accordingly, the present invention provides low cost methods and systems for adding new technology to existing mobile devices. Specifically, new devices such as sensors or MEMS (Micro-Electro-Mechanical Systems) devices are embedded in peripherals using standard interface ports on the existing mobile devices.
Thus, a novel mobile system is formed by combining the mobile device having a first standard interface with a peripheral having a second standard interface, a functional device and a sensor. The second standard interface is connected to the first standard interface to allow the mobile device to access the sensor on the peripheral. In some aspects of the present invention data from the sensor is used to conserve power in the mobile device. For example, the mobile device could be configured to turn off a subsystem, such as a display, based on the orientation of the mobile device, which could be calculated using data from the sensor. In another aspect of the present invention, the performance of power consuming functions, such as connecting to a network, might be dependent upon data from the sensor.
The present invention will be more fully understood in view of the following description and drawings.
As explained above, the installed base of mobile devices exceeds several billion. While new features are incorporated into newer models of mobile devices, users of pre-existing mobile devices must do without the new features or replace their mobile device with costly newer models. However, in accordance with the present invention, some new features can be used with existing mobile devices.
To maintain compatibility, with the standard interface, sensor 260 should operate and communicate with the mobile device without interfering with the operation of functional device 240. Thus, in accordance with one aspect of the present invention, when functional device 240 is a memory system, data from sensor 260 is mapped into memory addresses beyond the memory range of functional device 240. For example, if function device 240 is a one gigabyte memory, data from sensor 260 can be mapped to memory addresses above 1,073,741,824. Thus a mobile device can obtain sensor data by reading data from the sensor at the appropriate memory address.
In accordance with another aspect of the present invention, sensor 260 may detect when functional device is not being used and can push data to the mobile device using an interrupt system. In still other aspects of the present invention, standard interface 180 and standard interface 220 may support multiple devices and thus sensor 260 and functional device 240 can share standard interface 220 without issue. Universal Serial Bus (USB) is an example of an interface system that supports multiple devices. Generally, the mobile device is loaded with software that is aware of sensor 260. The software would be machine-readable c
In accordance with one aspect of the present invention, sensor 260 is used to reduce power consumption in a mobile device. Many mobile devices that communicate with external wireless networks, such as cell phones, expend power trying to connect to the network base stations of the wireless network. Typically, when a mobile device cannot connect to the network, the mobile device is configured to attempt to connect to the network at regular intervals. However, a very common reason the mobile device can not connect to the network is that the physical location of the mobile device is either out of range or somehow blocked from the network base stations. Thus, until the mobile device is moved from the current location, attempts to connect to the wireless network will fail. Furthermore, these attempts to connect to the wireless network needlessly consumes power. Thus, in accordance with one aspect of the present invention, certain power consuming functions are not performed until data from the sensor is read and analyzed to determine that the mobile device has moved.
IF the mobile device does not detect a network in DETECT NETWORK 310, the mobile device can use various operations to determine when to search for a network. A first operation could be based on movement while a second operation would be based on time. The operations can operate independently from each other. The movement based operation is available if a peripheral with a sensor (as shown in
Movement of the mobile device may be inferred from sensor data from sensor 260. For example, if sensor 260 is an accelerometer, movement can be inferred when data from sensor 260 indicates that the accelerometer detected acceleration of the mobile device. If sensor 260 is a gyroscope, movement is inferred when the data from sensor 260 indicates a change in the orientation of the mobile device.
The mobile device may also use a time based delay operation for detection of a network. Specifically, when the network is not detected in DETECT NETWORK 310, the mobile state sets a next detection time N_T in SET NEXT DETECTION TIME 380. Next detection time N_T indicates when to perform the next network detection operation. Next detection time N_T can be a specific time of day, or could be a set amount of time (i.e. in 5 minutes). When next detection time N_T is reached in NEXT DETECTION TIME REACHED 390 the mobile device again attempts to detect the wireless network in DETECT NETWORK 310. In some aspects of the present invention, next detection time N_T is reset when a network detection operation is performed due to sensor data (i.e. in DETECT MOBILE DEVICE MOVEMENT 370). In addition, in some aspects of the present invention, if a peripheral having a sensor is connected to the mobile device, next detection time N_T may be set to a later time (or a greater amount) than if the peripheral with a sensor is not connected. Thus, having a peripheral with a sensor can reduce power consumption by reducing the number of network detection operations even when the phone is not moved.
Some aspects of the invention may include an optional special condition operation, which is based on detection of special conditions, to determine when to search for a network. Special conditions greatly reduces the chances of connecting to the network. Thus, during special conditions network detection operations would likely be futile and be a waste of power. The special condition operation can operate independently from the movement based operation (i.e. READ SENSOR DATA FROM PERIPHERAL 360 and DETECT MOBILE DEVICE MOVEMENT 370.) and the time based delay operation (i.e. SET NEXT DETECTION TIME 380 and NEXT DETECTION TIME REACHED 390). However in certain circumstances the special condition operation may override or modify the other movement based operation and the time based delay operation. Specifically, the sensor data read in READ SENSOR DATA FROM PERIPHERAL 360 is processed in DETECT SPECIAL CONDITION 372 to determine whether a special condition has occurred that reduces the chances of connecting to the network. If no special conditions are detected the movement based operation and the time based delay operation are allowed to operate normally. However, if a special condition is detected, the mobile device may override the movement based operation and/or the time based delay operation so that no attempts are made to connect to the network while the special condition exists. Alternatively, the mobile device may override the movement based operation while modifying the time based delay operation by increasing net detection time N_T.
Once a special condition is detected, the mobile device transitions to RESOLVES SPECIAL CONDITION 374. Based on the sensor data, the mobile device determines whether the special condition has been resolved. If the special condition is resolved, the mobile device again attempts to detection the wireless network in DETECT NETWORK 310. Furthermore, the movement based operation and time based delay operation are allowed to operate normally. However, if the special condition is still not resolved, the mobile device conserves power by not attempting to detect the wireless network and instead reads the sensor data again in READ SENSOR DATA FROM PERIPHERAL 360. In some aspects of the present invention, the mobile device may idle for a short time after determining that the special condition is not resolved.
As explained above, special conditions exist when the mobile device is unlikely to be able to connect to the network. Some examples of special conditions include, when the mobile device is in an underground structure (such as a parking garage, or a cave) or when the mobile device is in a tunnel. With regards to an underground parking garage, the special condition could be determined by diction of a prolonged descent. Such as riding down an elevator. Resolution of the special condition can be caused by a detection of a prolonged ascent. Detection of entering a tunnel can be detected when the sensor includes GPS abilities.
Another common technique to reduce power consumption in mobile devices is to turn off a subsystem, such as a display, when the subsystem is not needed. For example, in cell phones, the display is often turned off when no keypad entry is received after a fixed time interval. By using the embedded sensor in the peripheral, the mobile device can detect conditions to turn off the display more quickly and thus reduce power consumption.
The method of
In other aspects of the present invention, sensor 260 in peripheral 200 could be used for other purposes. In one aspect of the present invention, the sensor can be used as part of a user input system. For example, a sensor incorporating an accelerometer and a gyroscope can be used for playing video games.
The methodologies described herein may be implemented by various means depending upon the application. For example, these methodologies may be implemented in hardware, firmware, software, or any combination thereof. For an implementation involving hardware, the processing units may be implemented within one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, electronic devices, other electronic units designed to perform the functions described herein, or a combination thereof.
Furthermore, the methodologies may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. Any machine readable medium tangibly embodying instructions may be used in implementing the methodologies described herein. For example, software codes may be stored in a memory and executed by a processor. Memory may be implemented within the processor or external to the processor. As used herein the term “memory” refers to any type of long term, short term, volatile, nonvolatile, or other memory and is not to be limited to any particular type of memory or number of memories, or type of media upon which memory is stored.
If implemented in firmware and/or software, the functions may be stored as one or more instructions or code on a computer-readable medium. Examples include computer-readable media encoded with a data structure and computer-readable media encoded with a computer program. Computer-readable media includes physical computer storage media. A storage medium may be any available medium that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage, semiconductor storage, or other storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer; disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
In addition to storage on computer-readable medium, instructions and/or data may be provided as signals on transmission media included in a communication apparatus. For example, a communication apparatus may include a transceiver having signals indicative of instructions and data. The instructions and data are configured to cause one or more processing units to implement the functions outlined in the claims. That is, the communication apparatus includes transmission media with signals indicative of information to perform disclosed functions. At a first time, the transmission media included in the communication apparatus may include a first portion of the information to perform the disclosed functions, while at a second time the transmission media included in the communication apparatus may include a second portion of the information to perform the disclosed functions.
In the various aspects of the present invention, novel methods and systems have been described for integrating a sensor on a peripheral with a standard interface with existing mobile devices. The various aspects of the structures and methods of this invention that are described above are illustrative only of the principles of this invention and are not intended to limit the scope of the invention to the particular aspects described. For example, in view of this disclosure those skilled in the art can define other mobile devices, peripherals, sensors, interfaces and so forth, and use these alternative features to create a method, or system according to the principles of this invention. Thus, the invention is limited only by the following claims.
