Patent
Data compression method
Victor S. Miller,Mark N. Wegman +1 more
- 11 Aug 1986
162
TL;DR: In this paper, a data compression method for communications between a host computing system and a number of remote terminals is enhanced by adding new character and string extensions to improve the compression ratio and deletion of a least recently used routine.
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Abstract: Communications between a Host Computing System and a number of remote terminals is enhanced by a data compression method which modifies the data compression method of Lempel and Ziv by addition of new character and new string extensions to improve the compression ratio, and deletion of a least recently used routine to limit the encoding tables to a fixed size to significantly improve data transmission efficiency.
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Citations
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Data compression apparatus and method
Douglas L. Whiting,Glen A. George,Glen E. Ivey +2 more
- 09 May 1994
TL;DR: An apparatus and method for converting an input data character stream into a variable length encoded data stream in a data compression system is described in this article. But this method requires the input data characters to be stored in the history array.
429
References
Compression of individual sequences via variable-rate coding
Jacob Ziv,A. Lempel +1 more
TL;DR: The proposed concept of compressibility is shown to play a role analogous to that of entropy in classical information theory where one deals with probabilistic ensembles of sequences rather than with individual sequences.
4K
Patent
High speed data compression and decompression apparatus and method
Welch Terry A
- 18 Jun 1984
TL;DR: In this paper, a data compressor compresses an input stream of data character signals by storing in a string table strings encountered in the input stream, where each string comprises a prefix string and an extension character where the extension character is the last character in the string and the prefix string comprises all but the extension characters.
356
Patent
Apparatus and method for compressing data signals and restoring the compressed data signals
Willard L. Eastman,Abraham Lempel,Jacob Ziv,Martin Cohn +3 more
- 10 Aug 1981
TL;DR: In this article, a search tree is constructed from the input data such that as each new segment is parsed, one new internal node of the tree is created from a leaf and new leaves are defined, one for each symbol encountered by the encoder plus an additional branch to represent all potential but unseen symbols.
237
Patent
Data compression,encryption,and in-line transmission system
Michael E. Giltner,Jack C. Mueller,Robert R. Fiest +2 more
- 02 Jun 1980
TL;DR: In this article, an in-line data compression system which reduces the number of binary bits required to transmit a given text or similar message over a data network such as Telex or TWX was proposed.
214
A note on the Ziv - Lempel model for compressing individual sequences (Corresp.)
TL;DR: The symbolwise equivalent of the Ziv-Lempel algorithm is extended to incomplete parse trees and requires the proper handling of the comma when one phrase is the prefix of another phrase.
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