Invention Grant
- Patent Title: Method and apparatus for improved double buffering
- Patent Title (中): 改进双缓冲的方法和装置
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Application No.: US64569Application Date: 1998-04-22
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Publication No.: US6100906APublication Date: 2000-08-08
- Inventor: Antonio Asaro , Indra Laksono , James Doyle , Gordon F. Grigor
- Applicant: Antonio Asaro , Indra Laksono , James Doyle , Gordon F. Grigor
- Applicant Address: CAX Thornhill
- Assignee: ATI Technologies, Inc.
- Current Assignee: ATI Technologies, Inc.
- Current Assignee Address: CAX Thornhill
- Main IPC: G09G5/36
- IPC: G09G5/36 ; G09G5/39 ; G09G5/393 ; G09G5/399 ; G06F13/00
Abstract:
A method and apparatus for improved double buffering within a computing system begins when a series of data blocks are received from a central processing unit at a rate independent of a processing rate of a recipient engine. For example, a video graphics circuit receives a series of data blocks representing video frames from the central processing unit at a rate independent of the refresh rate of the display. As the data blocks are received, the video graphics circuit queues commands of the data blocks. Typically, the commands include processing commands and a processing rate synchronize command. To process the data blocks, the co-processor pulls commands from the queued list and processes them to produce recipient data. As the co-processor is producing the recipient data, it is utilizing a first buffer. The co-processor continues to process the commands and storing the results into the first buffer until the processing rate synchronize command is detected. At this point, the co-processor pauses processing of the commands. At the beginning of the next cycle of the processing rate, the recipient data is provided from the first buffer to the recipient engine and the co-processor resumes processing of commands, which relate to another data block. As the co-processor is processing the commands of the second data block, it is utilizing a second buffer to store the processed data, i.e., the second recipient data.
Public/Granted literature
- USD399997S Sole of a cross country ski boot Public/Granted day:1998-10-27
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