JPS56169966A - Video information coding method - Google Patents

Video information coding method

Info

Publication number
JPS56169966A
JPS56169966A JP7405280A JP7405280A JPS56169966A JP S56169966 A JPS56169966 A JP S56169966A JP 7405280 A JP7405280 A JP 7405280A JP 7405280 A JP7405280 A JP 7405280A JP S56169966 A JPS56169966 A JP S56169966A
Authority
JP
Japan
Prior art keywords
line
fed
coded
video
share
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.)
Granted
Application number
JP7405280A
Other languages
Japanese (ja)
Other versions
JPS6367394B2 (en
Inventor
Yoshitoshi Yamauchi
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 JP7405280A priority Critical patent/JPS56169966A/en
Publication of JPS56169966A publication Critical patent/JPS56169966A/en
Publication of JPS6367394B2 publication Critical patent/JPS6367394B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To effectively encode a density level of multi-tone, by combining coded binary data, through coding of the run length of a changing picture between white and black level video elements at the run of every video information and coding of the interval of appearance of the video elements of intermediate tone level. CONSTITUTION:A video signal read in the video element unit with a scanner 1 of a transmission side A is quantized at an A/D converter 2 in multi-value, and it is fed to a data compressor 3 via an SW1, and it is fed to a one line buffer register 4, and the signal for one line's share is stored temporarily and concentratingly. Further, the video information for one line's share is coded at the compressor 3 to store it temporarily at a buffer circuit 5 for sequential line speed conversion. Next, when the processing for one line's share is finished, the switch SW1 is selected, the content of the register 4 is fed to the compressor 3 to be applied to the circuit 5 after being coded according to another process. Further, the coded binary data with respective processes is combined and the density level of multi-tone is effectively coded and fed to an MODEM6.
JP7405280A 1980-06-02 1980-06-02 Video information coding method Granted JPS56169966A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7405280A JPS56169966A (en) 1980-06-02 1980-06-02 Video information coding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7405280A JPS56169966A (en) 1980-06-02 1980-06-02 Video information coding method

Publications (2)

Publication Number Publication Date
JPS56169966A true JPS56169966A (en) 1981-12-26
JPS6367394B2 JPS6367394B2 (en) 1988-12-26

Family

ID=13536023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7405280A Granted JPS56169966A (en) 1980-06-02 1980-06-02 Video information coding method

Country Status (1)

Country Link
JP (1) JPS56169966A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871322A1 (en) * 1997-04-12 1998-10-14 Agfa-Gevaert AG Double resolution image recording system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0871322A1 (en) * 1997-04-12 1998-10-14 Agfa-Gevaert AG Double resolution image recording system

Also Published As

Publication number Publication date
JPS6367394B2 (en) 1988-12-26

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