Portable computing device adapted to update display information while in a low power mode
First Claim
Patent Images
1. A wireless communication device comprising:
- a processor having a core region, wherein the processor has at least an operational mode and a standby operational mode;
a direct memory access (DMA) engine; and
a display coupled to the processor, and DMA engine, wherein the wireless communication device is adapted to modify data to be displayed on the display while at least a portion of the core region of the processor is in the standby operational mode, and wherein the DMA engine is adapted to transfer information from a memory to the display while at least a portion of the core region of the processor is in the standby operational mode.
9 Assignments
0 Petitions
Accused Products
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.
32 Citations
20 Claims
-
1. A wireless communication device comprising:
-
a processor having a core region, wherein the processor has at least an operational mode and a standby operational mode; a direct memory access (DMA) engine; and a display coupled to the processor, and DMA engine, wherein the wireless communication device is adapted to modify data to be displayed on the display while at least a portion of the core region of the processor is in the standby operational mode, and wherein the DMA engine is adapted to transfer information from a memory to the display while at least a portion of the core region of the processor is in the standby operational mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus comprising:
-
a processor, the processor having at least a first operational mode and a second operational mode; a display controller; and a direct memory access (DMA) engine to transfer data to the display controller while the processor is in second operational mode, wherein the DMA engine if further adapted to transfer data from a memory to the processor while the processor is in the first operational mode. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A method of displaying information on a display of a portable computing device, comprising:
transferring information from a memory to a display controller with a direct memory access (DMA) engine while a processor in the portable computing device is in a disabled operational mode. - View Dependent Claims (16, 17, 18)
-
19. A method of operating a communication network having a base station and at least one mobile station, the method comprising:
transmitting a signal from the base station to the at least one mobile station so that a processor in the at least one mobile station transitions from a first operational mode to a second operational mode, wherein the processor suspends the execution of instructions and a direct memory access (DMA) engine transfers data from a memory to a display controller while the processor is in the second operation mode. - View Dependent Claims (20)
Specification