JPS5646356A - Transmission system for fax of video signal for crt display - Google Patents

Transmission system for fax of video signal for crt display

Info

Publication number
JPS5646356A
JPS5646356A JP12087379A JP12087379A JPS5646356A JP S5646356 A JPS5646356 A JP S5646356A JP 12087379 A JP12087379 A JP 12087379A JP 12087379 A JP12087379 A JP 12087379A JP S5646356 A JPS5646356 A JP S5646356A
Authority
JP
Japan
Prior art keywords
video signal
fax
code
bit
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.)
Pending
Application number
JP12087379A
Other languages
Japanese (ja)
Inventor
Yukio Kawaguchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12087379A priority Critical patent/JPS5646356A/en
Publication of JPS5646356A publication Critical patent/JPS5646356A/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

Abstract

PURPOSE:To enable the effective utility of FAX, by performing the code conversion for the video signal of video signal device and transmitting it to the FAX receiver. CONSTITUTION:In case of transfer operation to FAX, two down-clocks are generated, two FFs 24, 25 for bit change flap are operated, and when the bit change signal Bch of output of the theoretical gate 26 is at 1, the down-clocks are inhibited, and the binary counter 29 stops the count of number of 0's of video signal while the 0 signal is present in FF25. The code converter 30 inputs the bit length from a changing point of the bit code of video signal to another changing point, it is converted into the data code for FAX and fed to the transmitter 33, and if the system is in the state of data input ready, the transmission data SD is loaded and fed to the line. When the loading is finished, one level of the next video signal is counted, the output EOL of M/S FF31 is at 1 and the EOL code is transmitted to finish the video signal of one line.
JP12087379A 1979-09-21 1979-09-21 Transmission system for fax of video signal for crt display Pending JPS5646356A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12087379A JPS5646356A (en) 1979-09-21 1979-09-21 Transmission system for fax of video signal for crt display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12087379A JPS5646356A (en) 1979-09-21 1979-09-21 Transmission system for fax of video signal for crt display

Publications (1)

Publication Number Publication Date
JPS5646356A true JPS5646356A (en) 1981-04-27

Family

ID=14797059

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12087379A Pending JPS5646356A (en) 1979-09-21 1979-09-21 Transmission system for fax of video signal for crt display

Country Status (1)

Country Link
JP (1) JPS5646356A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183574A (en) * 1983-04-02 1984-10-18 Canon Inc Communication control system of picture information

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59183574A (en) * 1983-04-02 1984-10-18 Canon Inc Communication control system of picture information

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