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Abraham Lempel, Gadiel Seroussi, Jeffrey P Tobin, Carl B Lantz: Apparatus and method for managing multiple dictionaries in content addressable memory based data compression. Hewlett Packard Corporation, December 13, 1994: US05373290 (121 worldwide citation)

A class of lossless data compression algorithms use a memory-based dictionary of finite size to facilitate the compression and decompression of data. To reduce the loss in data compression caused by dictionary resets, a standby dictionary is used to store a subset of encoded data entries previously ...


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Carl B Lantz: Dictionary reset performance enhancement for data compression applications. Hewlett Packard Company, December 29, 1992: US05175543 (72 worldwide citation)

A class of lossless data compression algorithms use a RAM-based dictionary to facilitate the compression and decompression of data. The dictionary is initialized or reset at various events, such as data file boundaries, or at specific compression ratio thresholds. The average time to perform the dic ...


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Jeffrey P Tobin, Carl B Lantz, Jeff J Kato: Data compression dictionary access minimization. Hewlett Packard Company, August 25, 1992: US05142282 (32 worldwide citation)

A logic circuit in an integrated circuit implementation of an adaptive data compression algorithm which uses a RAM to store dictionary entries. The logic circuit generates predetermined codewords for single-character strings without accessing the dictionary. The logic circuit also generates single-c ...


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