US 2006/0038830 A1 · SYSTEM AND METHOD FOR CONTINUOUSLY TRACING TRANSFER RECTANGLES FOR IMAGE DATA TRANSFERS

Abstract

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 transfer rectangle during a normal mode to include pixel data from the foregoing write operations. The coordinates module stores the primary transfer rectangle for performing a current transfer operation. The coordinates module enters a pause mode before initiating the current transfer operation, and retains the primary transfer rectangle during the pause mode. The coordinate module also stores a secondary transfer rectangle formed during the pause mode by detecting the foregoing write operations. The controller logic instructs the coordinates module to resume the normal mode after the current transfer operation concludes. The coordinates module then replaces the primary transfer rectangle with the secondary transfer rectangle for performing a subsequent transfer operation.

Claims42

Dependent claims

A system for handling electronic information, comprising:

a rectangle module that detects write operations to on-screen data in a video memory, said rectangle module updating a primary transfer rectangle during a normal mode to include pixel data from said write operations;
a coordinates module that stores primary rectangle coordinates defining said primary transfer rectangle for performing a current transfer operation;
and
controller logic that instructs said coordinates module to enter a pause mode before initiating said current transfer operation, said coordinates module retaining said primary rectangle coordinates during said pause mode, said coordinates module also storing secondary rectangle coordinates for a secondary transfer rectangle formed during said pause mode by continuing to detect said write operations, said controller logic instructing said coordinates module to resume said normal mode after said current transfer operation concludes, said coordinates module then responsively replacing said primary rectangle coordinates with said secondary rectangle coordinates for performing a subsequent transfer operation.

1 more element

A method for handling electronic information, comprising the steps of:

detecting write operations to on-screen data in a video memory by utilizing a rectangle module that updates a primary transfer rectangle during a normal mode to include pixel data from said write operations;
storing primary rectangle coordinates with a coordinates module, said primary rectangle coordinates defining said primary transfer rectangle for performing a current transfer operation;
instructing said coordinates module to enter a pause mode before initiating said current transfer operation by utilizing controller logic, said coordinates module retaining said primary rectangle coordinates during said pause mode, said coordinates module also storing secondary rectangle coordinates for a secondary transfer rectangle formed during said pause mode by continuing to detect said write operations;
and
resuming said normal mode after said current transfer operation concludes, said coordinates module then responsively replacing said primary rectangle coordinates with said secondary rectangle coordinates for performing a subsequent transfer operation.

2 more elements

Dependencies are inferred from the claim text.

System and method for continuously tracing transfer rectangles for image data transfers

Life of this patent

System and method for continuously tracing transfer rectangles for image data transfers

Life of this patent

Abstract

Claims42