JPS5737976A - Code converter - Google Patents

Code converter

Info

Publication number
JPS5737976A
JPS5737976A JP11138780A JP11138780A JPS5737976A JP S5737976 A JPS5737976 A JP S5737976A JP 11138780 A JP11138780 A JP 11138780A JP 11138780 A JP11138780 A JP 11138780A JP S5737976 A JPS5737976 A JP S5737976A
Authority
JP
Japan
Prior art keywords
codes
circuit
code
encoded
high speed
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
JP11138780A
Other languages
Japanese (ja)
Inventor
Toshiaki Yamada
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP11138780A priority Critical patent/JPS5737976A/en
Publication of JPS5737976A publication Critical patent/JPS5737976A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41Bandwidth or redundancy reduction
    • H04N1/411Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/417Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To reduce transmitting time, by performing MH encoding in processes which require high speed encodings and converting the MH codes into MR codes at the time of transmission. CONSTITUTION:When MH codes which can be encoded at high speed are input, an MH encode line extracting circuit 1 extracts the head line of the MH codes and gives a detecting signal to an EOl ''1'' insert circuit 2. In this way, the insert circuit 2 adds ''1'' to the head line and sents it to a code output buffer 3. At the same time, the MH code is sent to an MR code circuit 6 through a K-line buffer memory 5 and encoded into MR codes, after it is decoded at a MH decode circuit 4. Upon receiving the MR code, the buffer circuit 3 outputs converted MR codes. Since MH codes encoded at high speed in this way are transmitted after they are converted into MR codes, the transmitting time is reduced.
JP11138780A 1980-08-13 1980-08-13 Code converter Pending JPS5737976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11138780A JPS5737976A (en) 1980-08-13 1980-08-13 Code converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11138780A JPS5737976A (en) 1980-08-13 1980-08-13 Code converter

Publications (1)

Publication Number Publication Date
JPS5737976A true JPS5737976A (en) 1982-03-02

Family

ID=14559884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11138780A Pending JPS5737976A (en) 1980-08-13 1980-08-13 Code converter

Country Status (1)

Country Link
JP (1) JPS5737976A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089797A2 (en) * 1982-03-19 1983-09-28 Ing. C. Olivetti & C., S.p.A. Digital image information compression and decompression method and apparatus
JPS6032476A (en) * 1983-08-03 1985-02-19 Nippon Telegr & Teleph Corp <Ntt> Method of changing expression level parameter in picture information transmission

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0089797A2 (en) * 1982-03-19 1983-09-28 Ing. C. Olivetti & C., S.p.A. Digital image information compression and decompression method and apparatus
JPS6032476A (en) * 1983-08-03 1985-02-19 Nippon Telegr & Teleph Corp <Ntt> Method of changing expression level parameter in picture information transmission

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