Portable electronic device and method of power management for same to accommodate projector operation

• US 8,231,233 B2
• Filed: 06/17/2009
• Issued: 07/31/2012
• Est. Priority Date: 06/17/2009
• Status: Expired due to Fees

• Current Assignee: Google Technology Holdings LLC (Alphabet Inc.)
• Original Assignee: Motorola Mobility, Inc. (Lenovo Group Ltd.)
• Inventors: Schuler, Francesca, Jonnalagadda, Krishna
• Primary Examiner(s): Epps, Georgia Y
• Assistant Examiner(s): Owens, Danell L
• Application Number:
  US12/486,450
• Publication Number:
  US 20100321647A1
• Time in Patent Office: 1,140 Days
• Field of Search: 353/94, 353/121, 370/311, 713/320
• US Class Current: 353/121
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: H04M 2250/54 including functional features of a projector or beamer module assembly
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04W 52/0267 by controlling user interface components
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A portable electronic device implements power management to accommodate operation of a projector from the device'"'"'s power source. The portable device includes a power source, a memory, a user interface, and a processor. The memory stores an image file and associated content metadata. The user interface receives a request to use the projector to perform a projection task, wherein the task includes projecting images from the image file onto a display surface. The processor is operable to: (i) retrieve the content metadata from the memory responsive to the request; (ii) project, based at least on the content metadata, whether the power source has sufficient power remaining for the projector to complete the task; and (iii) if there is not sufficient power remaining, modify parameters associated with the task and/or functionality of the portable device in an attempt to enable the power source to supply sufficient power to the projector.

Claims

1. A method of operation of a portable communication device, the portable communication device receiving power from an accompanying power source and supporting operation of a projector, the projector being operable to project images onto a user-selected display surface spaced a distance from the portable communication device, the method comprising:

receiving an input indicating a request to use the projector to perform a projection task, the projection task including projecting at least one image from a stored image file onto the user-selected display surface;

responsive to the request, retrieving content metadata for the stored image file;

determining, based at least on the content metadata, whether the power source has sufficient power remaining to enable the projector to complete the projection task;

in the event that the power source is determined to not have sufficient power remaining to enable the projector to complete the projection task, modifying at least one of parameters associated with the projection task and functionality of the portable communication device to increase a likelihood that the power source will be able to supply sufficient power to the projector to complete the projection task;

determining whether modifying at least one of parameters associated with the projection task and functionality of the portable communication device will enable the power source to supply sufficient power to the projector to complete the projection task; and

in the event that modifying at least one of parameters associated with the projection task and functionality of the portable communication device will not enable the power source to supply sufficient power to the projector to complete the projection task, searching for another portable communication device to which to communicate the stored image file for projected display.

2. The method of claim 1, wherein the step of determining whether the power source has sufficient power remaining to complete the projection task comprises:

estimating, based at least on the content metadata, an amount of power required from the power source for the projector to complete the projection task;

estimating, based at least on the content metadata, an amount of time required for the projector to complete the projection task;

estimating an amount of operating time remaining for the power source taking into account the estimated amount of power required for the projector to complete the projection task; and

comparing the estimated amount of time required for the projector to complete the projection task to the estimated amount of operating time remaining for the power source.

3. The method claim 1, wherein the step of receiving an input comprises receiving a request to execute a software application that controls operation of the projector.

4. The method of claim 1, wherein the step of modifying at least one of parameters associated with the projection task and functionality of the portable electronic device comprises:

modifying at least one of parameters associated with the projection task and functionality of the portable electronic device based on stored context data relating to operation of the projector.

5. The method of claim 1, wherein the step of modifying at least one of parameters associated with the projection task and functionality of the portable electronic device comprises:

reducing at least one of a laser scanning speed of the projector, resolution of displayed images, brightness of displayed images, contrast of displayed images, size of displayed images, and a quantity of colors used in displayed images.

6. The method of claim 1, wherein the portable electronic device is a portable communication device and wherein the step of modifying at least one of parameters associated with the projection task and functionality of the portable electronic device comprises:

deactivating at least one of the following functional features of the portable communication device;

short-range wireless communication functionality, Internet access functionality, keypad lighting, display lightning and location-related functionality.

7. The method of claim 1, further comprising:

storing information related to which parameters of the projection task and which functionality of the portable electronic device was modified to produce projector-related, power-saving history information.

8. The method of claim 7, further comprising:

receiving a second input indicating a second request to use the projector to perform a second projection task, the second projection task including projecting at lease one image from a second stored image file onto a second user-selected display surface;

responsive to the second request, retrieving second content metadata from the second stored image file;

projecting, based at lease one the second content metadata, whether the power source has sufficient power remaining to enable the projector to complete the second projection task; and

in the event that the power source is projected to not have sufficient power remaining to enable the projector to complete the second projection task, modifying at least one of parameters associated with the second projection task and functionality of the portable electronic device based at least on the projector-related, power-saving history information to increase a likelihood that the power source will be able to supply sufficient power to the projector to complete the second projection task.

9. The method of claim 1, further comprising:

determining whether the other portable communication device has sufficient power to enable the projector to complete the projection task; and

in the event that the other portable communication device has sufficient power to enable the projector to complete the projection task, transmitting the stored image file to the other portable communication device.

10. The method claim 1, further comprising:

prior to modifying at least one of parameters associated with the projection task and functionality of the portable electronic device, displaying proposed modifications to at least one of parameters associated with the projection task and functionality of the portable electronic device to a user of the portable electronic device, the proposed modifications corresponding to a power management policy stored in a memory of the portable electronic device;

receiving a second input indicating whether the user accepts the proposed modifications; and

updating the power management policy based on the second user input.

11. The method of claim 10, wherein the step of modifying at least one of parameters associated with the projection task and functionality of the portable electronic device comprises:

in the event that the second input indicates that the user accepts the proposed modifications, modifying at least one of parameters associated with the projection task and functionality of the portable electronic device in accordance with the proposed modifications.

12. A portable electronic device that supports operation of a projector, the projector being operable to project images onto a user-selected display surface spaced a distance from the portable electronic device, the portable electronic device comprising:

a power source;

a memory, coupled to the power source, operable to store an image file and associated content metadata;

a user interface coupled to the power source, the user interface operable to receive a user input indicating a request to use the projector to perform a projection task, the projection task including projecting at least one image from the image file onto the user-selected display surface;

a transmitter coupled to the power source; and

a processor coupled to the power source, the user interface, the transmitter and the memory, the processor being operable to;

retrieve, from the memory, the content metadata for the image file responsive to the user input;

determine, based at least on the content metadata, whether the power source has sufficient power remaining to enable the projector to complete the projection task;

in the event that the power source is determined to not have sufficient power remaining to enable the projector to complete the projection task, modify at least one of parameters associated with the projection task and functionality of the portable electronic device to increase a likelihood that the power source will be able to supply sufficient power to the projector to complete the projection task;

determine whether modifying at least one of parameters associated with the projection task and functionality of the portable electronic device will enable the power source to supply sufficient power to the projector to complete the projection task;

in the event that modifying at least one of parameters associated with the projection task and functionality of the portable electronic device will not enable the portable power source to supply sufficient power to the projector to complete the projection task, search for another portable electronic device to which to communicate the image file for projected display;

determine whether the other portable electronic device has sufficient power to complete the projection task; and

in the event that the other portable electronic device has sufficient power to complete the projection task, transmit the image file to the other portable electronic device via the transmitter.

13. The portable electronic device of claim 12, wherein the processor is further operable to:

estimate, based at least on the content metadata, an amount of power required from the power source for the projector to complete the projection task;

estimate, based at least on the content metadata, an amount of time required for the projector to complete the projection task;

estimate an amount of operating time remaining for the power source taking into account the estimated amount of power required for the projector to complete the projection task; and

compare the estimated amount of time required for the projector to complete the projection task to the estimated amount of operating time remaining for the power source to project whether the power source has sufficient power remaining to enable the projector to complete the projection task.

14. The portable electronic device of claim 12, further comprising the projector, wherein the projector is coupled to the power source and the processor, and wherein the memory is further operable to store an application that, when executed by the processor, enables the processor to control operation of the projector.

15. The portable electronic device of claim 12, wherein the portable electronic device is a wireless communication device and wherein the power source is a rechargeable battery.

16. The portable electronic device of claim 12, wherein the memory is further operable to store context data relating to operation of the projector and wherein the processor is further operable to modify at least one of parameters associated with the projection task and functionality of the portable electronic device based on the context data.

17. The portable electronic device of claim 16, wherein the context data includes at least one of user preferences, history of prior modifications to at least one of parameters associated with the projection task and functionality of the portable electronic device, a power management policy for the portable electronic device, time of day, day of the week, day of the year, location of the portable electronic device, and brightness in an area in which the projector is intended to operate.

18. A method of operation of a portable electronic device, the portable electronic device receiving power from an accompanying power source and supporting operation of a projector, the projector being operable to project images onto a user-selected display surface spaced a distance from the portable electronic device, the method comprising:

receiving a power availability query from another portable electronic device, the power availability query requesting information on an available capacity of the power source;

estimating the available capacity of the power source responsive to the power availability query;

transmitting a power availability message to the other portable electronic device, the power availability message including information regarding the estimated available capacity of the power source;

receiving, from the other portable electronic device, a request to accept transfer of an image file for display by the projector responsive to the power availability message; and

transmitting an image transfer response message to the other portable electronic device, the image transfer response message indicating whether the portable electronic device will accept transfer of the image file to facilitate projection by the projector.

19. A method of operation of a system that includes at least a first portable electronic device and a second portable electronic device, the first portable electronic device receiving power from a first power source, the second portable electronic device receiving power from a second power source, each of the first portable electronic device and the second portable electronic device supporting operation of at least one projector, the at least one projector being operable to project images onto a user-selected display surface spaced a distance from at least one of the first portable electronic device and the second portable electronic device, the method comprising:

receiving, at the first portable electronic device, a user input indicating a request to use the at least one projector to perform a projection task, the projection task including projecting at least one image from a stored image file onto the user-selected display surface;

responsive to the request, retrieving, by the first portable electronic device, content metadata for the stored image file;

determining, by the first portable electronic device and based at least on the content metadata, whether the first power source has sufficient power remaining to enable the at least one projector to complete the projection task;

in the event that the first power source is determined to not have sufficient power remaining to enable the at least one projector to complete the projection task, determining, by the first portable electronic device, whether modifying at least one of parameters associated with the projection task and functionality of the first portable electronic device will enable the first power source to supply sufficient power to the at least one projector to complete the projection task;

in the event that modifying at least one of parameters associated with the projection task and functionality of the first portable electronic device will not enable the first power source to supply sufficient power to the at least one projector to complete the projection task, transmitting, by the first portable electronic device, a power availability query to the second portable electronic device, the power availability query requesting information regarding an available capacity of the second power source;

receiving, by the second portable electronic device, the power availability query;

determining, by the second portable electronic device, the available capacity of the second power source responsive to the power availability query;

transmitting, by the second portable electronic device, a power availability message to the first portable electronic device, the power availability message including information regarding the available capacity of the second power source;

determining, by the first portable electronic device, whether the second power source has sufficient power capacity to complete the projection task;

in the event that the second power source has sufficient power capacity to complete the projection task, transmitting, by the first portable electronic device, a request to accept transfer of the stored image file for display by the at least one projector;

receiving, by the second portable electronic device, the request to accept transfer of the stored image file;

transmitting, by the second portable electronic device, an image transfer response message responsive to the request to accept transfer of the stored image file, the image transfer response message indicating whether the second portable electronic device will accept transfer of the stored image file to facilitate projection by the at least one projector; and

transmitting, by the first portable electronic device, the stored image file to the second portable electronic device in the event that the image transfer response message indicates that the second portable electronic device will accept transfer of the stored image file.

20. A portable electronic device that supports operation of a projector, the projector being operable to project images onto a user-selected display surface spaced a distance from the portable electronic device, the portable electronic device comprising:

a power source;

a memory, coupled to the power source, operable to store an image file and associated content metadata;

a user interface coupled to the power source, the user interface operable to receive an input indicating a request to use the projector to perform a projection task, the projection task including projecting at least one image from the image file onto the user-selected display surface;

a transmitter coupled to the power source; and

a processor coupled to the power source, the user interface, the transmitter and the memory, the processor being operable to;

retrieve, from the memory, the content metadata for the image file responsive to the user input;

determine, based at least on the content metadata, whether the power source has sufficient power remaining to enable the projector to complete the projection task;

in the event that the power source is determined to not have sufficient power remaining to enable the projector to complete the projection task, determine whether modifying at least one of parameters associated with the projection task and functionality of the portable electronic device will enable the power source to supply sufficient power to the projector to complete the projection task;

in the event that modifying at least one of parameters associated with the projection task and functionality of the portable electronic device will not enable the portable power source to supply sufficient power to the projector to complete the projection task, search for another portable electronic device to which to communicate the image file for projected display;

determine whether the other portable electronic device has sufficient power to complete the projection task; and

in the event that the other portable electronic device has sufficient power to complete the projection task, transmit the image file to the other portable electronic device via the transmitter.