EP 0204763 A4 19890309 - DATA COMPRESSING COMPUTER SYSTEM AND PROCESS THERETO.
Title (en)
DATA COMPRESSING COMPUTER SYSTEM AND PROCESS THERETO.
Title (de)
RECHNERSYSTEM MIT DATENVERDICHTUNG UND VERFAHREN.
Title (fr)
SYSTEME D'ORDINATEUR A COMPRESSION DE DONNEES ET PROCEDE.
Publication
Application
Priority
US 67214684 A 19841116
Abstract (en)
[origin: WO8603037A1] The prior art compression of a data in computer memory and transmission of compressed data has proved to be uneconomical and too slow. The present process uses dimensional co-ordinates of the place of the data as its value for coding purposes. The coding process, as shown by the flow chart of Fig. 2C, is based on a compression of the distances between "on" and "off" states of bits of data bytes as they progress through stages (34, 35, 36, 37 and 38) and a decoding process of Fig. 2C, as shown by other stages (40, 41, 42 and 43). The coding and decoding processes are controlled by a repeating control stage (39) that increases the compression of the data as many times as ordered. By using the repeated coding of the dimensioned co-ordinates of the place of the data in the transmitted/received data in the computer system or in the transmission system, the volume of the computer memory is increased and the communications are done more economically.
IPC 1-7
IPC 8 full level
G06F 5/00 (2006.01); H03M 7/30 (2006.01); H03M 7/42 (2006.01); H04L 23/00 (2006.01)
CPC (source: EP)
H03M 7/30 (2013.01)
Citation (search report)
- [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 15, no. 12, May 1973, pages 3849-3850, New York, US; P.J. MIN et al.: "Flagged run-lenght coded data format"
- See references of WO 8603037A1
Designated contracting state (EPC)
DE FR GB SE
DOCDB simple family (publication)
WO 8603037 A1 19860522; EP 0204763 A1 19861217; EP 0204763 A4 19890309; JP S62501115 A 19870430
DOCDB simple family (application)
US 8502252 W 19851115; EP 85906108 A 19851115; JP 50536485 A 19851115