JPS5464920A - Encoding system for picture information - Google Patents

Encoding system for picture information

Info

Publication number
JPS5464920A
JPS5464920A JP13088177A JP13088177A JPS5464920A JP S5464920 A JPS5464920 A JP S5464920A JP 13088177 A JP13088177 A JP 13088177A JP 13088177 A JP13088177 A JP 13088177A JP S5464920 A JPS5464920 A JP S5464920A
Authority
JP
Japan
Prior art keywords
code
counter
line
signal
shift
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
JP13088177A
Other languages
Japanese (ja)
Inventor
Hideo Amano
Yuzo Omiya
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13088177A priority Critical patent/JPS5464920A/en
Publication of JPS5464920A publication Critical patent/JPS5464920A/en
Pending legal-status Critical Current

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  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE: To obtain a encoding efficiency by carrying out encoding based on the transistion probability of the code between the shift code and the run-length.
CONSTITUTION: At control part 12, each "1" signal is encoded for the present line after checking whether the relative position, i.e., the shift distance is O and ±1 between the coordinates stored in preceding line counter 15 and present line counter 17. The other words, the shift is O in the case of the "1" signal a1 of preceding line A and the "1" signal of present line B respectively, and the address corresponding at part 12 is transmitted. Then the contents of code memory 20 is read out to code register 22, and its code length "2" is read out ot code length counter 24 respectively. Part 12 then sends the clock pulse to register 22 and counter 24 until the pulse to make the contents of counter 24 zero emerges at the signal line, and then the code is transmitted from transmission line 27. In this way, the encoding is carried out based on the transition probability of the code between the shift code and the run- length to obtain a high encoding efficiency.
COPYRIGHT: (C)1979,JPO&Japio
JP13088177A 1977-11-02 1977-11-02 Encoding system for picture information Pending JPS5464920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13088177A JPS5464920A (en) 1977-11-02 1977-11-02 Encoding system for picture information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13088177A JPS5464920A (en) 1977-11-02 1977-11-02 Encoding system for picture information

Publications (1)

Publication Number Publication Date
JPS5464920A true JPS5464920A (en) 1979-05-25

Family

ID=15044867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13088177A Pending JPS5464920A (en) 1977-11-02 1977-11-02 Encoding system for picture information

Country Status (1)

Country Link
JP (1) JPS5464920A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175283A (en) * 1983-03-24 1984-10-04 Nec Corp Coding circuit of facsimile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523323A (en) * 1975-06-25 1977-01-11 Fujitsu Ltd Variable length block coded circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS523323A (en) * 1975-06-25 1977-01-11 Fujitsu Ltd Variable length block coded circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59175283A (en) * 1983-03-24 1984-10-04 Nec Corp Coding circuit of facsimile
JPH0220034B2 (en) * 1983-03-24 1990-05-07 Nippon Electric Co

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