JPS57181285A - Television signal transmission system - Google Patents

Television signal transmission system

Info

Publication number
JPS57181285A
JPS57181285A JP6633281A JP6633281A JPS57181285A JP S57181285 A JPS57181285 A JP S57181285A JP 6633281 A JP6633281 A JP 6633281A JP 6633281 A JP6633281 A JP 6633281A JP S57181285 A JPS57181285 A JP S57181285A
Authority
JP
Japan
Prior art keywords
band
contents
signal
circuit
frame
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
JP6633281A
Other languages
Japanese (ja)
Inventor
Toshio Hanabatake
Makoto Hiraoka
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6633281A priority Critical patent/JPS57181285A/en
Publication of JPS57181285A publication Critical patent/JPS57181285A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H04N7/56—Synchronising systems therefor

Landscapes

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

Abstract

PURPOSE:To eliminate the need for a synchronous extracting circuit and to improve band compression effect by compressing the band of a television signal assumed as frame length irrelevant to a synchronizing signal, and then adding a frame header part to each frame. CONSTITUTION:An analog signal from a television camera 11 is converted by an A/D converting circuit 12 into a digital signal, which is applied to a band compressing circuit 13. The band-compressed signal is applied to a buffer memory 14 and the contents of a counter 16 which counts a write clock are used as an address to perform writing operation. For the reading of the buffer memory 14, the contents of a counter 17 which counts a read clock are used as an address, and a frame header part is added at every prescribed period before transmission. A comparing circuit 18 compares the contents of both the counters with each other to detect the amount of generated information, and then sets frame length according to their difference.
JP6633281A 1981-04-30 1981-04-30 Television signal transmission system Pending JPS57181285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6633281A JPS57181285A (en) 1981-04-30 1981-04-30 Television signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6633281A JPS57181285A (en) 1981-04-30 1981-04-30 Television signal transmission system

Publications (1)

Publication Number Publication Date
JPS57181285A true JPS57181285A (en) 1982-11-08

Family

ID=13312781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6633281A Pending JPS57181285A (en) 1981-04-30 1981-04-30 Television signal transmission system

Country Status (1)

Country Link
JP (1) JPS57181285A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033789A (en) * 1983-08-03 1985-02-21 Matsushita Electric Ind Co Ltd Method for transmitting picture to be coded

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033789A (en) * 1983-08-03 1985-02-21 Matsushita Electric Ind Co Ltd Method for transmitting picture to be coded
JPH0228949B2 (en) * 1983-08-03 1990-06-27 Matsushita Electric Ind Co Ltd

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