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a fixed/variable bit-rate data compression architectureA VLSI architecture for an adaptive data compression encoder capable of sustaining fixed or variable bit-rate output has been developed. There are three modes of operation: lossless with variable bit-rate, lossy with fixed bit-rate and lossy with variable bit-rate. For lossless encoding, the implementation is identical to the USES chip designed for Landsat 7. Obtaining a fixed bit-rate is achieved with a lossy DPCM algorithm using adaptive, nonuniform scalar quantization. In lossy mode, variable bit-rate coding uses the lossless sections of the encoder for post-DPCM entropy coding. The encoder shows excellent compression performance in comparison to other current data compression techniques. No external tables or memory are required for operation.
Document ID
19940016655
Document Type
Conference Paper
Authors
Zweigle, Gregary C.
(Advanced Hardware Architectures Moscow, ID., United States)
Venbrux, Jack
(New Mexico Univ. Albuquerque., United States)
Yeh, Pen-Shu
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1993
Publication Information
Publication: New Mexico Univ., The Fifth NASA Symposium on VLSI Design
Subject Category
COMPUTER OPERATIONS AND HARDWARE
Funding Number(s)
CONTRACT_GRANT: NAGW-3292
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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