A system and method for continuously tracing transfer rectangles for performing image data transfers includes a display controller with control logic, a rectangle module, and a coordinates module. The rectangle module detects write operations to on-screen data in a video memory, and then updates a primary...http://www.google.ca/patents/US7046227?utm_source=gb-gplus-sharePatent US7046227 - System and method for continuously tracing transfer rectangles for image data transfers
