[go: up one dir, main page]

JPS5640371A - Drop-out compensating unit - Google Patents

Drop-out compensating unit

Info

Publication number
JPS5640371A
JPS5640371A JP11694779A JP11694779A JPS5640371A JP S5640371 A JPS5640371 A JP S5640371A JP 11694779 A JP11694779 A JP 11694779A JP 11694779 A JP11694779 A JP 11694779A JP S5640371 A JPS5640371 A JP S5640371A
Authority
JP
Japan
Prior art keywords
drop
signal
circuit
luminance signal
equalizer
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
JP11694779A
Other languages
Japanese (ja)
Other versions
JPS6047659B2 (en
Inventor
Katsuhiko Yamamoto
Hiroshi Kitaura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP54116947A priority Critical patent/JPS6047659B2/en
Publication of JPS5640371A publication Critical patent/JPS5640371A/en
Publication of JPS6047659B2 publication Critical patent/JPS6047659B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals
    • H04N9/88—Signal drop-out compensation
    • H04N9/882—Signal drop-out compensation the signal being a composite colour television signal

Landscapes

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

Abstract

PURPOSE:To realize stableness of operations and simplification of the circuit, by detecting drop-out after converting the FM luminance signal to a low frequency. CONSTITUTION:The signal from video head 11 becomes a luminance signal through amplifier 12, BPF13, equalizer 14, amplitude limiter 21, and FM demodulator 22. In case of drop-out, switch circuit 15 is switched by the pulse from drop-out pulse generator 19, and the output signal from equalizer 14 is broken, and the output of 1H delay circuit 20 is caused to pass, thereby compensating the signal for drop-out. The circuit consisting of oscillator 16, mixer 17, and BPF18 converts (beats down) the carrier of the FM liminance signal to a low frequency temporarily, and only carrier components of the beated-down FM luminance signal are led to drop-out generator 19. As a result, stable and sure operations are possible.
JP54116947A 1979-09-11 1979-09-11 dropout compensator Expired JPS6047659B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54116947A JPS6047659B2 (en) 1979-09-11 1979-09-11 dropout compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54116947A JPS6047659B2 (en) 1979-09-11 1979-09-11 dropout compensator

Publications (2)

Publication Number Publication Date
JPS5640371A true JPS5640371A (en) 1981-04-16
JPS6047659B2 JPS6047659B2 (en) 1985-10-23

Family

ID=14699661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54116947A Expired JPS6047659B2 (en) 1979-09-11 1979-09-11 dropout compensator

Country Status (1)

Country Link
JP (1) JPS6047659B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117449A (en) * 1983-11-30 1985-06-24 Hitachi Ltd Amplitude drop detection circuit
JPS6243997A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Video signal processor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04100762A (en) * 1990-08-17 1992-04-02 Mk Seiko Co Ltd Car washer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117449A (en) * 1983-11-30 1985-06-24 Hitachi Ltd Amplitude drop detection circuit
JPH0234108B2 (en) * 1983-11-30 1990-08-01 Hitachi Ltd
JPS6243997A (en) * 1985-08-22 1987-02-25 Matsushita Electric Ind Co Ltd Video signal processor

Also Published As

Publication number Publication date
JPS6047659B2 (en) 1985-10-23

Similar Documents

Publication Publication Date Title
JPS5640371A (en) Drop-out compensating unit
JPS5483718A (en) Improvement unit for picture quality
JPS53132214A (en) Vertical aperture correction circuit
JPS5568774A (en) Blooming preventing device
JPS5765988A (en) Processing circuit for color video signal
JPS6444179A (en) Television receiver
JPS5646386A (en) Dropout compensating circuit
JPS5388521A (en) Contour compensating device
JPS5676693A (en) Vtr
JPS5758482A (en) Dropout compensation circuit
JPS55161475A (en) Squelch circuit of television receiver
JPS5640385A (en) Separating circuit of video signal
JPS5436122A (en) Generator for still picture signal
JPS5738087A (en) Separation circuit for carrier chrominance signal
JPS57143702A (en) Picture recording and reproducing device
JPS5336425A (en) Color television picture receiver of beam index time
JPS53109610A (en) Noise remover
JPS5389317A (en) Reproducing unit for color video signal
JPS5487110A (en) Detection circuit for television synchronizing signal
JPS53148325A (en) Television receiver
JPS5421218A (en) One-point emphasis corcuit
JPS567576A (en) Television audio receiver
JPS57104391A (en) Connecting system between image pickup device and recorder
JPS54144816A (en) Video signal recording and reproduction unit
JPS5685988A (en) Record reproducing device of pal system color television signal