Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1996-06-21
1999-11-30
Shalwala, Bipin H.
Computer graphics processing and selective visual display system
Display peripheral interface input device
345507, 345509, 707101, 711157, G09G 504
Patent
active
059950803
ABSTRACT:
An apparatus and method a method for performing two-pass real time video compression is provided. Tactical decisions such as encoding and quantization values are determined in software, whereas functional execution steps are performed in hardware. By appropriately apportioning the tasks between software and hardware, the benefits of each type of processing are exploited, while minimizing both hardware complexity and data transfer requirements. One key concept that allows the compression unit to operate in real time is that the architecture and pipelining both allow for B frames to be executed out of order. By buffering B frames, two-pass motion estimation techniques can be performed to tailor bit usage to the requirements of the frame, and thereby provide a more appealing output image.
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Adiletta Matthew James
Biro Larry Louis
Reilly Matthew Howard
Wheeler William R.
Digital Equipment Corporation
Kovalick Vincent E.
Shalwala Bipin H.
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