Portable computing device adapted to update display information while in a low power mode
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Abstract
Briefly, in accordance with one embodiment of the invention, a portable computing device that has a processor, a direct memory access (DMA) engine, and a display controller may transfer data with the DMA engine to the display. The DMA engine may transfer the data while the processor is in a standby mode and transfer data to the processor while the processor is executing instructions.
36 Citations
41 Claims
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1-23. -23. (canceled)
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24. A wireless communication device comprising:
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a display; and
an application microprocessor coupled to the display to provide information to be displayed on the display, wherein the wireless communication device is adapted to update displayed information while the application microprocessor is inactive or in a standby mode. - View Dependent Claims (25, 30)
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26-1. The wireless communication device of claim 26, wherein the memory is external to the application microprocessor.
- 31. A direct memory access (DMA) engine adapted to transfer data to a display frame buffer to update information on a display while an associated applications processor is inactive or in a standby mode.
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36. A portable system comprising:
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a baseband processor;
an application processor coupled to the baseband processor;
a display controller coupled to the application processor; and
a direct memory access (DMA) engine coupled to the display controller and the application processor;
wherein the DMA engine is configured to continually update information to the display controller for display without involvement of the application processor. - View Dependent Claims (37, 38, 39, 40, 41)
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Specification