SYSTEM AND METHOD FOR DETECTING MEMORY WRITES TO INITIATE IMAGE DATA TRANSFERS

摘要

PROBLEM TO BE SOLVED: To provide a system and method for detecting memory writes to initiate image data transfers. SOLUTION: The system and method for detecting memory writes to initiate image data transfers includes a display controller device with a write detector module and controller logic. The write detector module detects write operations from a host central-processing unit to on-screen data in a video memory of the display controller. The write detector module responsively sets a transfer flag to indicate that the on-screen data has been modified. The controller logic then detects that the transfer flag has been set by the write detector module. The controller logic may then efficiently initiate a frame transfer operation for transferring the modified on-screen data from the video memory to a display of a host electronic device. COPYRIGHT: (C)2006,JPO&NCIPI