JPS56112181A - Decoder for facsimile - Google Patents

Decoder for facsimile

Info

Publication number
JPS56112181A
JPS56112181A JP1428580A JP1428580A JPS56112181A JP S56112181 A JPS56112181 A JP S56112181A JP 1428580 A JP1428580 A JP 1428580A JP 1428580 A JP1428580 A JP 1428580A JP S56112181 A JPS56112181 A JP S56112181A
Authority
JP
Japan
Prior art keywords
signal
decoding
buffer
information
during
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
JP1428580A
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 JP1428580A priority Critical patent/JPS56112181A/en
Publication of JPS56112181A publication Critical patent/JPS56112181A/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)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To operate a decoder quickly by storing decoding information once in a decoding information buffer, decoding during the extension of a signal and extending the signal during decoding. CONSTITUTION:Decoding information buffer 12 and color control circuit are set up between decoding circuit 1 and run generation counter 3. Signal (i) from buffer 12 sets the black/white run length of decoding information on counter 3. Said control circuit 13 gives the color information of a sign which is to be extended at present to data output buffer 6 according to color discriminating signal (i). When output signal (g) outputted when a line synchronous signal is detected from decoding information buffer 2 is entered, signal (i) to make white is outputted. When terminating code TC to encode the line length of 0-63 picture elements is detected, signal (i) which changes color information when output signal (g') is entered is outputted. Thus, the decoder can be operated quickly by decoding during the extension of a signal and extending the signal during decoding.
JP1428580A 1980-02-09 1980-02-09 Decoder for facsimile Pending JPS56112181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1428580A JPS56112181A (en) 1980-02-09 1980-02-09 Decoder for facsimile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1428580A JPS56112181A (en) 1980-02-09 1980-02-09 Decoder for facsimile

Publications (1)

Publication Number Publication Date
JPS56112181A true JPS56112181A (en) 1981-09-04

Family

ID=11856813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1428580A Pending JPS56112181A (en) 1980-02-09 1980-02-09 Decoder for facsimile

Country Status (1)

Country Link
JP (1) JPS56112181A (en)

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