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Proceedings Paper

C-Cube MPEG video processor
Author(s): Stephen Purcell; Dave Galbi
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Paper Abstract

International Standards Organization (ISO) Motion Picture Expert Group (MPEG) technology enables computers, communication, and consumer electronics products to use high-quality digital video and is expected to play a critical role in the emerging multimedia movement. Real-time MPEG performance can be achieved in a single chip with commercial VLSI technology, but requires high-performance buses, memory bandwidths, and arithmetic capabilities. For example, the C-Cube MPEG chip consists of a general purpose processor and dedicated image coprocessors, which implement the ISO MPEG standard for a range of quality and resolution levels. Software can be tailored to specific applications and environments of MPEG. There is special hardware support for discrete cosine transforms, subpel resampling, variable length codes, rounding and clipping. The built-in DRAM controller interfaces directly (without glue chips) to standard DRAMs and utilizes fast page mode. The video bus uses International Radio Consultative Committee 601 format (CrYCbY 4:2:2). Interrupt channels handle the movement of data between DRAM and video bus, and between DRAM and bitstream bus. Multiple chips can be combined for higher resolution applications. A fast algorithms for DCT reduces the number of multiplications.

Paper Details

Date Published: 30 April 1992
PDF: 6 pages
Proc. SPIE 1659, Image Processing and Interchange: Implementation and Systems, (30 April 1992); doi: 10.1117/12.58393
Show Author Affiliations
Stephen Purcell, C-Cube Microsystems (United States)
Dave Galbi, C-Cube Microsystems (United States)

Published in SPIE Proceedings Vol. 1659:
Image Processing and Interchange: Implementation and Systems
Ronald B. Arps; William K. Pratt, Editor(s)

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