JPS55121784A - Video signal processor - Google Patents

Video signal processor

Info

Publication number
JPS55121784A
JPS55121784A JP2895879A JP2895879A JPS55121784A JP S55121784 A JPS55121784 A JP S55121784A JP 2895879 A JP2895879 A JP 2895879A JP 2895879 A JP2895879 A JP 2895879A JP S55121784 A JPS55121784 A JP S55121784A
Authority
JP
Japan
Prior art keywords
supplied
multiplexer
speed
given
video signals
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
JP2895879A
Other languages
Japanese (ja)
Inventor
Katsuhiko Aoyanagi
Nobushi Suzuki
Sumio Nagashima
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP2895879A priority Critical patent/JPS55121784A/en
Publication of JPS55121784A publication Critical patent/JPS55121784A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • H04N7/122—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line
    • H04N7/125—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal involving expansion and subsequent compression of a signal segment, e.g. a frame, a line the signal segment being a picture element

Landscapes

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

Abstract

PURPOSE:To memorize the video signals equivalent to one picture screen after selection with every several scanning lines, at the same time reading out the video signals in a low speed to supply them to the low-speed input unit. CONSTITUTION:Output signal ES given from ITV unit 1 is written into 1-line speed conversion memory 3 through analog switch circuit 2. Signal ES read out of memory 3 in a low speed is supplied to the low-speed input unit after the A/D conversion. Vertical synchronous signal VD given from unit is counted by counter 7 featuring maximum 6 bits and then supplied to multiplexer 8. In the same way, horizontal synchronous signal HD is counted by counter 9 of maximum 6 bits and then decoded through decoder 10 to be supplied to multiplexer 8. Accordingly, multiplexer 8 is given to analog switch 2 plus control circuits 4 and 6 in the form of control signal RC which designates the scanning line of No.6N-5 (N=1, 2...). Thus the video signals equivalent to one picture screen can be supplied to the input unit with no loss.
JP2895879A 1979-03-13 1979-03-13 Video signal processor Pending JPS55121784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2895879A JPS55121784A (en) 1979-03-13 1979-03-13 Video signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2895879A JPS55121784A (en) 1979-03-13 1979-03-13 Video signal processor

Publications (1)

Publication Number Publication Date
JPS55121784A true JPS55121784A (en) 1980-09-19

Family

ID=12262917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2895879A Pending JPS55121784A (en) 1979-03-13 1979-03-13 Video signal processor

Country Status (1)

Country Link
JP (1) JPS55121784A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57119574A (en) * 1981-01-19 1982-07-26 Toshiba Corp Picture reproduction system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57119574A (en) * 1981-01-19 1982-07-26 Toshiba Corp Picture reproduction system

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