1
James D Allen, Matin Boliek, Edward L Schwartz: Method and apparatus for parallel decoding and encoding of data. Ricoh Corporation, Ricoh Company, Blakely Sokoloff Taylor & Zafman, January 10, 1995: US05381145 (213 worldwide citation)

The present invention provides a method and apparatus for encoding and decoding data in parallel. The present invention provides a system for decompressing a data stream having multiple codewords. The system includes an input channel that receives the data stream. The system also includes a decoder ...


2
Mike S C Hsu: Computer system including a transparent and secure file transform mechanism. Fliesler Dubb Meyer & Lovejoy, December 10, 1996: US05584023 (207 worldwide citation)

A computer system including a file transform mechanism, such as encryption, compression, encoding, translation and conversion, a file storage subsystem for storing a file composed of one or more blocks of data, a data storage subsystem for storing blocks of data in first and second logical data area ...


3
Edward L Schwartz, Michael J Gormish, James D Allen, Martin Boliek: Method and apparatus for encoding and decoding data. Ricoh Company, Ricoh Corporation, Blakely Sokoloff Taylor & Zafman, February 10, 1998: US05717394 (206 worldwide citation)

A method and apparatus for decompressing and compressing data is described. The present invention provides an encoder for use in a compression system having a decoder for decoding information generated by the encoder. The encoder of the present invention includes a coder for producing codeword infor ...


4
John T O Brien, George A Rudeseal, Charles A Milligan, Craig A Buhlman: Apparatus for compressing data in a dynamically mapped virtual data storage subsystem. Storage Technology Corporation, Duft Graziano & Forest, September 21, 1993: US05247638 (198 worldwide citation)

The use of a dynamically mapped virtual memory system permits the storage of data so that each data record occupies only the physical space required for the data. Furthermore, the data storage subsystem manages the allocation of physical space on the disk drives and does not rely on the file extent ...


5
John R Waterworth: Data compression system. Ferranti, Kerkam Stowell Kondracki & Clarke, October 20, 1987: US04701745 (195 worldwide citation)

A data compression system includes an input store (1) for receiving and storing a plurality of bytes of data from an outside source. Data processing means for processing successive bytes of data from the input store includes circuit means (21-25) operable to check whether a sequence of bytes is iden ...


6
Dean K Gibson, Mark D Graybill: Apparatus and method for very high data rate-compression incorporating lossless data compression and expansion utilizing a hashing technique. Intersecting Concepts, Thomas I Rozsa, September 17, 1991: US05049881 (181 worldwide citation)

A method and apparatus for compressing digital data that is represented as a sequence of characters drawn from an alphabet. An input data block is processed into an output data block composed of sections of variable length. Unlike most prior art methods which emphasize the creation of a dictionary c ...


7
Robert A Lindsay: System for selecting best fit vector code in vector quantization encoding. Unisys Corporation, Alfred W Kozak, Nathan Cass, L Joseph Marhoefer, February 23, 1988: US04727354 (180 worldwide citation)

A system and apparatus for encoding a set of input vector components by initiating a sequential search through a codebook memory to put out a series of associated error code vectors which can be compared in sequence over a period of time in order to select the minimum error code vector (best fit). A ...


8
Kent D Anderson, Neal Glover: General purpose, hash-based technique for single-pass lossless data compression. Cirrus Logic, Roger W Blakely Jr, William E Alford, Gary B Goates, April 11, 1995: US05406279 (171 worldwide citation)

A general-purpose, single-pass, adaptive, and lossless data compression invention implements an LZ1-like method using a hash-based architecture. It is suitable for use in data storage and data communications applications. Implementation efficiency, in terms of required memory and logic gates relativ ...


9
Phillip W Katz: String searcher, and compressor using same. PKWare, Fuller Ryan & Hohenfeldt, September 24, 1991: US05051745 (166 worldwide citation)

Methods and apparatus for string searching and data compression. In the string search method and apparatus pointers to the string to be searched are indexed via a hashing function and organized according to the hashing values of the string elements pointed to. The hashing function is also run on the ...


10
John T O Brien: Data compression system for successively applying at least two data compression methods to an input data stream. Storage Technology Corporation, Dorr Carson Sloan & Peterson, January 29, 1991: US04988998 (157 worldwide citation)

The improved data compression system concurrently processes both strings of repeated characters and textual substitution of input character strings. In this system, the performance of data compression techniques based on textual substitution are improved by the use of a compact representation for id ...