System and technique for reducing power consumed by a data transfer operations during periods of update inactivity

摘要: A system and method are described that reduce display subsystem power consumption in computer systems where image data is transferred from an memory to a each time new frame displayed. In normal operation, the displays uncompressed data, which stored memory. After period of inactivity, processor compresses writes compressed another location subsequent cycles, until there activity, retrieves memory, decompresses it real then transfers decompressed display. Entire images or segments can be this manner. Using saves as requires fewer cycles transfer than data. Bus bandwidth available for other, unrelated activities increases result reduction, benefits other operations.