Display power management

摘要

An apparatus and method for power management in a display system. A display controller (360) couples to a memory storage device (340). A frame buffer (345) in the memory storage device is filled with frames of information for display on a display screen (225). The frames of information transfer in small portions to a display buffer (370) in the display controller. The display controller transmits portions of the frames of information to a display device. When portions of the frames of information are not being transferred to the display controller, the display controller and the memory storage device may separately enter a power saving mode. In the power saving mode, the display controller may continue to transmit portions of the frames of information to the display device; however, power and a clock signal to components of the display controller may be limited. The display controller exits the power saving mode to fill the display buffer.