JPS55124361A - Redundancy suppression coding system - Google Patents

Redundancy suppression coding system

Info

Publication number
JPS55124361A
JPS55124361A JP3193279A JP3193279A JPS55124361A JP S55124361 A JPS55124361 A JP S55124361A JP 3193279 A JP3193279 A JP 3193279A JP 3193279 A JP3193279 A JP 3193279A JP S55124361 A JPS55124361 A JP S55124361A
Authority
JP
Japan
Prior art keywords
scanning line
coding
state
density level
signal
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
JP3193279A
Other languages
Japanese (ja)
Other versions
JPS6026347B2 (en
Inventor
Hiroshi Ochi
Tetsuji Yamamoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54031932A priority Critical patent/JPS6026347B2/en
Publication of JPS55124361A publication Critical patent/JPS55124361A/en
Publication of JPS6026347B2 publication Critical patent/JPS6026347B2/en
Expired 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
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
    • H04N1/417—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information using predictive or differential encoding

Abstract

PURPOSE:To ensure the high compression factor without causing the picture quality lowering of the picture signal, by giving the coding to the information of the density level boundary of the picture signals including the intermediate gradation and quantized. CONSTITUTION:The contents of the coding scanning line of picture signal fV and the reference scanning line are memorized in line memories 11 and 12 each. And memories 11 and 12 supply their contents to discriminator circuit 13. Thus circuit 13 discriminates the following states: state S1 under which the connection is secured from the reference scanning line onto the coding scanning line; state S2 which exists on the reference scanning line but disappears on the coding scanning line; and state S3 which is caused newly on the coding scanning line respectively. Code generator 15 receive states S1-S3, the run length and the new density level signal of state S3 to generate the corresponding codes. These generated codes are supplied to buffer memory 16 to be stored there temporarily. Thus code signal F can be obtained at the output terminal of memory 16. The application is possible to the redundancy suppression of the color picture signal by securing the correspondence between the density level and the kinds of color.
JP54031932A 1979-03-19 1979-03-19 Redundancy reduction coding method Expired JPS6026347B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54031932A JPS6026347B2 (en) 1979-03-19 1979-03-19 Redundancy reduction coding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54031932A JPS6026347B2 (en) 1979-03-19 1979-03-19 Redundancy reduction coding method

Publications (2)

Publication Number Publication Date
JPS55124361A true JPS55124361A (en) 1980-09-25
JPS6026347B2 JPS6026347B2 (en) 1985-06-22

Family

ID=12344736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54031932A Expired JPS6026347B2 (en) 1979-03-19 1979-03-19 Redundancy reduction coding method

Country Status (1)

Country Link
JP (1) JPS6026347B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897965A (en) * 1981-12-07 1983-06-10 Mitsubishi Electric Corp Picture encoding device
JPS58165482A (en) * 1982-03-25 1983-09-30 Mitsubishi Electric Corp Encoder of color picture data
JPS59138183A (en) * 1983-01-28 1984-08-08 Mitsubishi Electric Corp System for coding color picture
WO2001065420A2 (en) * 2000-02-29 2001-09-07 Watchpoint Media, Inc. Methods for manipulating data in multiple dimensions

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897965A (en) * 1981-12-07 1983-06-10 Mitsubishi Electric Corp Picture encoding device
JPH0134420B2 (en) * 1981-12-07 1989-07-19 Mitsubishi Electric Corp
JPS58165482A (en) * 1982-03-25 1983-09-30 Mitsubishi Electric Corp Encoder of color picture data
JPH0435949B2 (en) * 1982-03-25 1992-06-12 Mitsubishi Electric Corp
JPS59138183A (en) * 1983-01-28 1984-08-08 Mitsubishi Electric Corp System for coding color picture
WO2001065420A2 (en) * 2000-02-29 2001-09-07 Watchpoint Media, Inc. Methods for manipulating data in multiple dimensions
WO2001065420A3 (en) * 2000-02-29 2002-02-28 Watchpoint Media Inc Methods for manipulating data in multiple dimensions

Also Published As

Publication number Publication date
JPS6026347B2 (en) 1985-06-22

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