A Multiprocessor Based Low Bitrate Video Codec Architecture and a Well-Adapted Two Phase Software Coding Strategy

Thomas Kummerow; Peter Mohr; Peter Weis

doi:10.1117/12.970036

1 November 1989 A Multiprocessor Based Low Bitrate Video Codec Architecture and a Well-Adapted Two Phase Software Coding Strategy

Thomas Kummerow, Peter Mohr, Peter Weis

Author Affiliations +

Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989) https://doi.org/10.1117/12.970036
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

Abstract

The first part of the paper describes a specialized multiprocessor environment for hybrid coding of visual communications signals in the range from ISDN basic access to primary rate transmission channels. Most important is a proprietary 4-wide SIMD parallel video processor with 80 MIPS. The second part deals with the software philosophy of the codec. It uses preanalysis and prebuffering in the first phase of coding a frame. In the second phase, limited processing power and available channel bits are distributed optimally over time and over changed areas of one frame. Codec delay is halved with respect to conventional codecs.

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Thomas Kummerow, Peter Mohr, and Peter Weis "A Multiprocessor Based Low Bitrate Video Codec Architecture and a Well-Adapted Two Phase Software Coding Strategy", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); https://doi.org/10.1117/12.970036

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