| 摘要 |
PROBLEM TO BE SOLVED: To provide a system and method for continuously tracing transfer rectangles for image data transfer. SOLUTION: The system and method includes a display controller with control logic, a rectangle module, and a coordinates module. The rectangle module detects write operations in a video memory and updates a primary transfer rectangle during a normal mode to include pixel data from the write operations. The coordinates module stores the primary transfer rectangle for performing a current transfer operation. The coordinate module enters a pause mode before initiating the current transfer operation and retains the primary transfer rectangle during the pause mode. The coordinate module stores a secondary transfer rectangle by detecting the write operations during the pause mode. The controller logic instructs the coordinates module to resume the normal mode, after the current transfer operation concludes. The coordinates module replaces the primary transfer rectangle with the secondary transfer rectangle for performing subsequent transfer operations. COPYRIGHT: (C)2006,JPO&NCIPI
|
