Patent Application
20150091799
The present description relates to projectors, and more specifically to mobile projectors that include a plurality of systems and a port adapted to receive and communicate with a removable module.
Optical projectors are used to project images onto a surface for viewing by groups of people. Increasingly, there is a desire to miniaturize optical projectors in order to allow for readily mobile projection applications. In response to this desire, a number of mobile projectors have been developed by 3M Company and others. However, more recently, the desire for a greater array of content and capability on mobile projectors has arisen. In the television market, one solution that has been used to increase the content streaming and other functionality of televisions has been so called “Streaming Sticks™” from Roku Inc. (Saratoga, Calif.).
In one aspect, the present disclosure describes a projector. In some embodiments, the projector includes a plurality of systems, including a port adapted to receive and communicate with a removable module. The projector is capable of indicating the capabilities of at least one of the plurality of systems to the removable module when such a module is inserted into the port. Further, the projector is capable of receiving return information from the removable module and selectively configuring the systems of the projector according to the return information when such a module is inserted into the port.
The plurality of systems may include an optical system, a thermal system, and/or an electronic system. Selectively configuring the optical system may include adjusting brightness, contrast ratio, or aspect ratio. Selectively configuring the thermal system may include adjusting a fan speed or selectively sending power to a fan. Selectively configuring the electronic system may include activating a wireless radio. The projector port may be an HDMI, USB or MHL port. The projector may indicate its capabilities by providing extended display identification data.
In another aspect, the present disclosure describes a method of providing multifunctionality to a projector. The method includes connecting a removable module to a projector that includes a plurality of systems. The removable module and the projector perform a protocol handshake, the removable module reads identification data from the projector, and the removable module sends commands to the projector to configure at least one of the plurality of systems. In some embodiments, the identification data includes extended display identification data.
In the field of projection, it has become increasingly common to include computationally-demanding applications within the projection devices themselves. This trend to add “smart” capabilities is present in other fields of electronics, such as with televisions and mobile phones. While this trend has led to projectors with increased capabilities, the inclusion of these demanding applications has increased the cost of producing such smart projectors. In addition, these applications use and require large amounts of memory, need improved cooling systems due to increased heat generation, and increase the demand on batteries, thereby limiting portability. At the same time, projectors are being designed smaller, lighter, and generally more portable. Mobile projectors are generally more easily moved and transported; may be powered by a battery, by a plug-in power source, or by a combination of the two; and may include pico projectors, handheld projectors, palm projectors, and pocket projectors. Mobile projectors and the like have limited physical space for memory and other components, including less room for a large high-capacity battery. Therefore, there is a need to create portable smart projectors that, while providing broad functionality, minimize the increased power consumption, thermal generation, and memory associated with such functionality. The present description provides a solution to this need by providing a projector that has is capable of communicating its own capabilities with a “smart” input module, receiving input back from such a module, and selectively configuring its systems in order to optimize the projection output based upon information received. This allows the projector to have great functionality without the issues associated with a high number of applications placed directly onto the projector. Embodiments of the present disclosure include projectors that include a plurality of systems and a port adapted to receive and communicate with a removable module. In some embodiments, the projector is capable of indicating the capabilities of at least one of the plurality of systems and the projector is capable of receiving return information from the removable module and selectively configuring the systems of the projector according to the return information when such a module is inserted into the port.
Because certain functionalities of the projector are dependent on the connection of a removable module, the projector may lack some multifunctionality in embodiments where only a single removable module may be connected at a time. Still, in applications where simultaneous capabilities are not required or even desired, limiting the projector to only one or several sets of functions may provide extended battery life, better calibrated and adjusted function-specific optical and thermal settings, and selective activation of components and accessories. In many cases, these advantages may be sufficient to justify the loss of simultaneous broad multifunctionality.
Optical system 110 includes suitable components to facilitate the projection of projected light 112 which may contain text and images. Some attributes and components are static, that is, they will not be adjusted or modified during the normal use of the projector. For example, the shape and size of any mirror or lens in optical system 110 will be unlikely to change during normal use. Other attributes and components are dynamic, that is, they may be configured and changed in the normal use of the projector. In some cases, the gamma, light output, aspect, and contrast ratio may be adjusted to suitable values depending on the lighting environment, the desired mode of projector usage, or other relevant circumstances. For applications where most of the image displayed through projected light 112 is text, high contrast and clarity for readability may be desired and prioritized. Adjustments to optical system 110 may also depend on ambient circumstances rather than the current desired application, or they may depend on ambient circumstances in addition to the current desired application. For certain applications, optical system 110 may be adjusted to generate brighter or dimmer projected light 112 depending on ambient room brightness. In some embodiments, projected light 112 from optical system 110 may depend on the physical orientation of projector 100 (e.g., whether it is placed horizontally, vertically, or upside down); that is, where optical system 110 generates projected light 112 that is correctly orientated on projection surface 114 regardless of the placement of the projector.
Thermal system 120 may include heat management and dissipation components. For example, thermal system 120 may include one or more fans or heat sinks. During normal operation of projector 100, fans of thermal system 120 may be switched to high power, to low power, or completely off, depending on the application. Often, there is a tradeoff between high levels of noise (i.e., due to fans running at high power) and high operating temperature (because fans may cool projector 100 through convection less effectively at low speed). In some embodiments, multiple fans may run at low speed in the place of a single fan operating at high speed. Depending on the desired application, the fans can be adjusted to maximize performance while minimizing operating temperature and noise.
One or more power management components, settings, or profiles may also be included in thermal system 120. Depending on the application, the power profile of thermal system 120 may be adjusted to provide either higher performance or lower power consumption. While generally lower power consumption may be desirable for instances where projector 100 is not connected to external power, i.e., when projector 100 is running on battery power, there may be uses of projector 100 where such a default may be undesirable, or at least not optimal. For example, in applications where high performance is essential, it may be desirable to maintain high power consumption even when projector 100 is running on battery power, regardless of the reduction in battery life. Likewise, in applications where power consumption is not limited by a battery, it may be desirable nonetheless for the power management of thermal system 120 to run projector 100 at lower power to minimize heat generation or the noise created by running one or more fans.
Thermal system 120 may also be adjusted according to ambient or environmental conditions, including but not limited to temperature, humidity, altitude, or background noise levels. Whether or how thermal system 120 is changed according to these parameters may vary depending on the desired application for projector 100.
Electronic system 130 may include drive electronics, software modules, input ports, wireless radios and transmitters, or other related components. For example, electronic system 130 may include a USB (universal serial bus) port which is selectively powered depending on the desired application for projector 100. In other embodiments, electronic system 130 may include a wireless radio, including a Bluetooth® compatible radio (registered trademark of Bluetooth Special Interest Group, Kirkland, Wash.), cellular data radio, or wireless local area network radio. Because such radios may consume significant amounts of power even in standby mode, power consumption may be better optimized by selectively deactivating the radios whenever the application of the projector does not require them.
Electronic system 130 may also include input/output components which interface with external controllers. For example, in some applications for projector 100, electronic system 130 may activate an input/output component that interfaces with an external keyboard or remote, whether connected through a wired port or via a wireless protocol. In applications where this type of external controller is not appropriate, electronic system 130 may disable power to or ignore signals from the input/output component.
Software components may also be included in electronic system 130. Depending on the application of projector 100, the software may be selectively configured to provide a different on-screen display on projection surface 114 through projected light 112. The software may adjust or alter the standard user interface depending on the application, including changing the functions of buttons on an external controller or other peripheral device, and detecting and customizing the interface—including language preferences, date and time formats, and choice of units—based on location. Software in electronic system 130 may also be configured to, depending on the application of projector 100, quickly retrieve specific and tailored online technical support or troubleshooting through a help button.
Electronic system 130 may also include suitable sensors, cameras, or detectors and appropriate implementing software in order to provide the capability of interactivity with projector 100. Users may interact with projector 100 via voice, gestures, signals, presence in a particular area, selectively interrupting projected light 112 (i.e., “casting a shadow on” or blocking light for a particular part of an image) or by illuminating particular parts of the image from projection surface 114, for example, with a handheld laser pointer. Such interactivity may be desired for gaming or entertainment applications of projector 100. In other cases, it may be desired in controlling or navigating through a presentation.
Port 140 is adapted to receive connector 142 and each may be any suitable shape and may communicate via any suitable protocol, including HDMI, DisplayPort, USB, MCCS over DDC, MHL with CEC, MYDP, or any combination thereof. The connection of port 140 with connector 142 may facilitate rapid transfer of data between projector 100 and removable module 102. Initially, data outputted from projector 100, represented in
Removable module 102 may vary considerably in its components and manner of providing configuration information—and possibly content—to projector 100 via connector 142 and port 140. The removable module shown in
Module electronic system 132 may contain any suitable components or systems to manage, operate, or power removable module 102 or even projector 100. Virtually any electronic component may be included in module electronic system 132 depending on suitable or desired applications. In embodiments where removable module 102 receives power through connector 142 from projector 100, module electronic system 132 may store, route, or control the flow of power throughout removable module 102. In other embodiments, particularly intensive computing applications of removable module 102, module electronic system 132 may power or selectively drive one or more cooling fans internal to removable module 102. Module electronic system 132 may be used to process data otherwise processed by components in projector 100, where it may be desired to have more computing power through parallel processors, or, alternatively, in embodiments or applications where more distributed power is desired, for example, where centralized processing may generate too much heat.
Content system 152 may include any suitable components which include those that receive, transmit, process, and generate content to be projected onto projection surface 114 through projected light 112. In some embodiments, content system 152 may include one or more wireless radios that receive streaming content from a wireless local area network, cellular data network, or other wireless data system.
In some embodiments, content system 152 may process the data to be more optimally or efficiently communicated to projector 100 for projection. In some embodiments this may include decrypting content with one or more codecs to or from one or more suitable formats. Content system 152 may include internal memory for storing image or video data, including photographs, presentations, movies, or other audiovisual content.
It should be apparent to one with skill in the art that the groupings of functions and components into systems in the above description are only for purposes of simply classifying and illustrating the interaction among the various parts. While components are identified with specific systems in the above description, some or even significant interchangeability in classification or precise function does not depart from the scope of embodiments of the present description.
At some point, removable module 102 is connected to projector 100 via the insertion of connector 142 into port 140. This step is in a dashed box in
Once the projector is powered on, the projector may configure itself to default states. Configuration means adjustments, calibrations, or changes to any or all systems 110, 120, 130, and 140. The default states may be predetermined and they may always be the same or they may be dependent on the last use or most common uses of the projector. At some point after configuration, the projector and removable module exchange a protocol handshake through port 140 and connector 142. This can include any suitable transfer of information with any suitable protocol.
In some embodiments, after the readying of the data transfer channels through the handshake, the removable module reads transmitted extended display information data from the projector. In addition to the EDID which may indicate capabilities, other data may be transmitted which indicates version information, model number, or other appropriate information related to the projector and its systems. Besides EDID, any other format for transmission of data may be used as long as sufficient information is passed from projector 100 to removable module 102 regarding the projector's display capabilities and systems.
After receiving information about the projector, removable module 102 sends one or more sets of commands that configure various systems and components on projector 100, depending on the removable module and its desired application. In some embodiments, the removable module sends a command to the projector to set the projector's optical configuration. This includes any adjustment or change to optical system 110. In other embodiments, the removable module sends a command to the projector to set the projector's thermal configuration, which includes any adjustment or change to thermal system 120. The removable module may also send a command to the projector to set the projector's electronic configuration, that is, make adjustments or changes to electronic system 130.
Depending on the particular application of the projector and the particular mechanisms and electronics of the removable module, different configurations or combinations of configurations may be appropriate. For example, a removable module which the projector is adapted to receive may be configured to provide streaming movie content to be displayed by the projector. In this case, optimal parameters for movie viewing may be set, including reconfiguring optical system 110. Configuration may include adjusting brightness, contrast, gamma, color space, aspect ratio, or any other adjustable parameter. Similarly, thermal system 120 may be reconfigured to minimize disruptive fan noise, which may include running multiple fans at low speed. Electronic system 130 may be reconfigured to turn off extraneous radios, ports, components, or systems to maximize performance while minimizing heat generation and noise.
In another possible application, the removable module may be set to configure the projector as a general purpose computer monitor. In this application, the removable module may send commands to reconfigure optical system 110 in order to more clearly display text, for example. Thermal system 120 may be configured to provide maximum cooling, because fan noise may be less of a concern for use as a computer monitor. Further, electronic system 130 may be configured to activate external input devices such as a wireless keyboard, keypad, or mouse.
The above applications are just two of a virtually unbounded set of configurations and optimizations of projector 100 for the particular purpose or of removable module 102. By using the removable module to configure systems and components of projector 100, the projector can be repurposed to improve or tailor its operation to the particular functionality desired through the removable module.
Likewise, the present invention should not be considered limited to the particular examples and embodiments described above, as such embodiments are described in detail in order to facilitate explanation of various aspects of the invention. Rather, the present invention should be understood to cover all aspects of the invention, including various modifications, equivalent processes, and alternative devices falling within the scope of the invention as defined by the appended claims.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2013/025874 | 2/13/2013 | WO | 00 |
| Number | Date | Country | |
|---|---|---|---|
| 61642734 | May 2012 | US |
