Title:
COMPRESSION SYSTEM FOR DATA
Document Type and Number:
Japanese Patent JPS61284119
Kind Code:
A
Abstract:
A compression and a decompression algorithm resides in a memory of a data processing system. The data processing system communicates to another data processing system via an input/output means and a telecommunications network. When a message, to be communicated to the other data processing system, is ready for transmission, the data processing system compresses the message data. A processor of the data processing system compresses the data using the compression algorithm stored in the memory of the data processing system. The compression algorithm: identifies a mask character in the data representing the most frequently occurring character in the data, develops a mask byte in association with the mask character, !the mask byte identifying the locations of the mask character in the data and identifying the locations of leach portion of a residual message associated with the data, and develops the residual message, the residual message representing the message data with the mask character extracted from the message data.
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Inventors:
ROORENSU EDOWAADO RAASON
Application Number:
JP11098486A
Publication Date:
December 15, 1986
Filing Date:
May 16, 1986
Export Citation:
Assignee:
IBM
International Classes:
H03M7/30; (IPC1-7): H03M7/30
Domestic Patent References:
| JPS57101937A | 1982-06-24 |
Attorney, Agent or Firm:
Koichi Tonmiya