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JPS5683190A - Still picture transmitter of time sharing multiplex communication - Google Patents

Still picture transmitter of time sharing multiplex communication

Info

Publication number
JPS5683190A
JPS5683190A JP15889979A JP15889979A JPS5683190A JP S5683190 A JPS5683190 A JP S5683190A JP 15889979 A JP15889979 A JP 15889979A JP 15889979 A JP15889979 A JP 15889979A JP S5683190 A JPS5683190 A JP S5683190A
Authority
JP
Japan
Prior art keywords
address code
video data
transmitted
reception
modulo
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
JP15889979A
Other languages
Japanese (ja)
Other versions
JPS5810915B2 (en
Inventor
Akio Matsuda
Kazumi Yuasa
Koji Takahashi
Fumio Iwasaki
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
Nippon Telegraph and Telephone Corp
Original Assignee
NEC Corp
Nippon Telegraph and Telephone 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 Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP54158899A priority Critical patent/JPS5810915B2/en
Publication of JPS5683190A publication Critical patent/JPS5683190A/en
Publication of JPS5810915B2 publication Critical patent/JPS5810915B2/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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To prevent the leakage of secret due to misconnection, by avoiding a playback at the reception misconnected for a transmitted video data, if misconnection is ocurred. CONSTITUTION:The transmission section transmits the designated address code from the address code generating circuit 4 at first. Next, the same address code is continuously produced and it is in modulo 2 addition for the video data and the address code at the modulo 2 adder 8 and transmitted with coding. At the reception side, the address code transmitted at the beginning of the reception data is detected at the address detector. Next, the same address code as the detected designation line is continuously generated at the address code oscillator, and at the modulo 2 adder, this address code and the coded video data are added with decoding. Further, decoded video data is transmitted to the still picture transmission reception section on the designated line. With this constitution, as far as the address code of the same line at the transmission and reception side is not produced, then the confidentiality can be kept, since the reception side can not decode the video data.
JP54158899A 1979-12-07 1979-12-07 Time division multiplexing still image transmission device Expired JPS5810915B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54158899A JPS5810915B2 (en) 1979-12-07 1979-12-07 Time division multiplexing still image transmission device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54158899A JPS5810915B2 (en) 1979-12-07 1979-12-07 Time division multiplexing still image transmission device

Publications (2)

Publication Number Publication Date
JPS5683190A true JPS5683190A (en) 1981-07-07
JPS5810915B2 JPS5810915B2 (en) 1983-02-28

Family

ID=15681793

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54158899A Expired JPS5810915B2 (en) 1979-12-07 1979-12-07 Time division multiplexing still image transmission device

Country Status (1)

Country Link
JP (1) JPS5810915B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176339A (en) * 1984-02-22 1985-09-10 Nec Corp Radio calling system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60176339A (en) * 1984-02-22 1985-09-10 Nec Corp Radio calling system

Also Published As

Publication number Publication date
JPS5810915B2 (en) 1983-02-28

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