JPS5673940A - Data compression system - Google Patents

Data compression system

Info

Publication number
JPS5673940A
JPS5673940A JP15029279A JP15029279A JPS5673940A JP S5673940 A JPS5673940 A JP S5673940A JP 15029279 A JP15029279 A JP 15029279A JP 15029279 A JP15029279 A JP 15029279A JP S5673940 A JPS5673940 A JP S5673940A
Authority
JP
Japan
Prior art keywords
code
compressed
compressed character
character group
codes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15029279A
Other languages
Japanese (ja)
Inventor
Hideo Goto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15029279A priority Critical patent/JPS5673940A/en
Publication of JPS5673940A publication Critical patent/JPS5673940A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE:To extend the compression and to increase the compressing rate, by providing the compressed character group identifying code of 4 bit in succession to the shift code of 4 bits, through taking all the characters used as compressible characters, and tramsmitting the compression code succeedingly. CONSTITUTION:In transmitting the transmission data ''LINE.320'' through the use of a conversion table, the transmitted data are converted into the fixed code ''F'', compressed character group code ''2'', compressed codes ''6'', ''5'', ''7'', ''3'', fixed code ''F'', compressed character code ''1'', compressed codes ''3'', ''2'', ''0'' and fixed code ''F'' (in matching to 8-bit unit). The compressed character group codes are O-F listed at the left of the conversion table, and for example, in the group indicated in the compressed character group code ''2'', the characters such as A, D, E, G... are included.
JP15029279A 1979-11-20 1979-11-20 Data compression system Pending JPS5673940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15029279A JPS5673940A (en) 1979-11-20 1979-11-20 Data compression system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15029279A JPS5673940A (en) 1979-11-20 1979-11-20 Data compression system

Publications (1)

Publication Number Publication Date
JPS5673940A true JPS5673940A (en) 1981-06-19

Family

ID=15493795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15029279A Pending JPS5673940A (en) 1979-11-20 1979-11-20 Data compression system

Country Status (1)

Country Link
JP (1) JPS5673940A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041348A (en) * 1983-08-16 1985-03-05 Amada Co Ltd Data compressing and transmitting method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041348A (en) * 1983-08-16 1985-03-05 Amada Co Ltd Data compressing and transmitting method

Similar Documents

Publication Publication Date Title
GB1512700A (en) Data transmission
JPS56111353A (en) Transmitting method for control information using common transmission line
EP0138080A3 (en) Communication system using variable length character code and coding method
JPS53134340A (en) Run length coding system
JPS55137761A (en) Composite private unit
JPS542050A (en) Block coding and decoding system
IT8222199A0 (en) TRANSMISSION, PARTICULARLY FOR A RAILWAY ENGINE FOR SELECTABLE OPERATION WITH MIXED, ARTIFICIAL AND NATURAL GRIP, OR FOR ONLY NATURAL GRIP OPERATION, WITH A BRANCHING MECHANISM.
JPS5673940A (en) Data compression system
GB9008374D0 (en) Communication system
JPS5632851A (en) Coding and decoding system for binary information
JPS56143744A (en) Data interchanging system
ES8705175A1 (en) Method of transmitting characters by code words of a telegraphic alphabet, in particular the international telegraphic alphabet no. 2, and apparatus for carrying out the method.
JPS57166640A (en) Data transmission converting system of buffer device
JPS5671807A (en) Data transmitting method
JPS5346211A (en) Data compressing unit
JPS5389608A (en) Multilevel code transmission system
JPS5621450A (en) Teleprinter
JPS5433013A (en) Coding and decoding system
JPS56763A (en) Line connector
JPS55125748A (en) Terminal control system
JPS57192187A (en) Character transmitting system
JPS56122546A (en) Multiple receiving and transmitting equipment
JPS5621451A (en) Teleprinter
JPS5398719A (en) Letter and picture communication unit
JPS53105310A (en) Signal transmitter