Record compression

Boots – shoes – and leggings

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Details

36471502, 341 52, G06F 1730

Patent

active

057109192

ABSTRACT:
A system (10) for compressing and decompressing records includes a decompressed file (12) and a compressed file (14). A first record is stored in a first buffer (18) and a second record is stored in a second buffer (20). A vertical compression technique compares the first record and the second record, on a field-by-field basis, and replaces the field of the second record with a vertical repeat indicator if the field of the second record matches the corresponding field of the first record. A horizontal compression technique further compresses the second record by replacing adjacent matching characters with a horizontal repeat indicator.

REFERENCES:
patent: 4446516 (1984-05-01), Nishimura
patent: 5179711 (1993-01-01), Vreeland
patent: 5603022 (1997-02-01), Ng et al.
Witten et al., "Indexing and Compressing Full-Text Databases for CD-ROM", Journal or Information Science, vol. 17, No. 5, pp. 265-271, May 1991.
Alsberg, "Space and Time Savings Through Large Data Base Compression and Dynamic Restructuring" Proceedings of the IEEE, vol. 63, No. 8, pp. 1114-1122, Aug. 1975.

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