JPS57132478A - Decoding system for variable length code - Google Patents

Decoding system for variable length code

Info

Publication number
JPS57132478A
JPS57132478A JP1685081A JP1685081A JPS57132478A JP S57132478 A JPS57132478 A JP S57132478A JP 1685081 A JP1685081 A JP 1685081A JP 1685081 A JP1685081 A JP 1685081A JP S57132478 A JPS57132478 A JP S57132478A
Authority
JP
Japan
Prior art keywords
code
error
line
counter
output
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
JP1685081A
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 JP1685081A priority Critical patent/JPS57132478A/en
Publication of JPS57132478A publication Critical patent/JPS57132478A/en
Pending 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
    • H04N1/419—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

PURPOSE:To prevent affecting of a code error from extending to the next line, by achieving sure detection of a line synchronizing signal even with code error. CONSTITUTION:After a shift register 1', FF2', and code counter 19 are cleared with an input of a clear signal CLK0, the number of data DT inputted in synchronizing with a clock CLK is counted at the code counter 19. When the output of the counter 19 is 12, the FF2' code set and an output signal from an EOL (line synchronizing signal) detection circuit 5 establishes an AND gate circuit 18 where an output of the FF2' is applied to be effective. Thus, when there is an error in the code, since the EOL can surely be detected, the effect of an error of a line on the next line is avoided, allowing to obtain an excellent picture.
JP1685081A 1981-02-09 1981-02-09 Decoding system for variable length code Pending JPS57132478A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1685081A JPS57132478A (en) 1981-02-09 1981-02-09 Decoding system for variable length code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1685081A JPS57132478A (en) 1981-02-09 1981-02-09 Decoding system for variable length code

Publications (1)

Publication Number Publication Date
JPS57132478A true JPS57132478A (en) 1982-08-16

Family

ID=11927683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1685081A Pending JPS57132478A (en) 1981-02-09 1981-02-09 Decoding system for variable length code

Country Status (1)

Country Link
JP (1) JPS57132478A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972190A (en) * 1982-10-19 1984-04-24 日本電気株式会社 Connecting structure of chip carrier type package to circuitboard
JPS59119971A (en) * 1982-12-25 1984-07-11 Fujitsu Ltd Decoding system
JPH02146870A (en) * 1989-07-19 1990-06-06 Hitachi Ltd Facsimile equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972190A (en) * 1982-10-19 1984-04-24 日本電気株式会社 Connecting structure of chip carrier type package to circuitboard
JPS59119971A (en) * 1982-12-25 1984-07-11 Fujitsu Ltd Decoding system
JPH02146870A (en) * 1989-07-19 1990-06-06 Hitachi Ltd Facsimile equipment

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