JPS5646386A - Dropout compensating circuit - Google Patents

Dropout compensating circuit

Info

Publication number
JPS5646386A
JPS5646386A JP12294379A JP12294379A JPS5646386A JP S5646386 A JPS5646386 A JP S5646386A JP 12294379 A JP12294379 A JP 12294379A JP 12294379 A JP12294379 A JP 12294379A JP S5646386 A JPS5646386 A JP S5646386A
Authority
JP
Japan
Prior art keywords
signal
circuit
fed
frequency
dropout
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
JP12294379A
Other languages
Japanese (ja)
Inventor
Shohei Yamazaki
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 JP12294379A priority Critical patent/JPS5646386A/en
Publication of JPS5646386A publication Critical patent/JPS5646386A/en
Pending 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)

Abstract

PURPOSE:To enable the rational dropout compensation, by generating the hue signal converted into a low frequency through the conversion of it to the frequency conversion signal converted into the standard hue signal frequency, in place of the reproducing frequency modulation signal, when a dropout takes place in the reproduced frequency modulation signal. CONSTITUTION:The head 2 amplifies the reproduced signal, which is fed to HPF4 and also fed to LPF10 to produce the chroma signal converted into a low frequency from the frequency conversion signal generating circuit 12. Further, the output of HPF4 is fed circuit 6 to detect the peak value of modulation wave, and when it is smaller than the peak value level predetermined, the switch signal is fed to the circuit 5. Further, the chroma signal converted into a low frequency from the circuit 12 is input with the switch signal and the output of HPF4 is fed to the limiter circuit 7 to replace the missing part of signal due to the dropout with the output of the circuit 12, the circuit 7 rejects the amplitude modulation component to output the luminance in which the dropout is compensated.
JP12294379A 1979-09-25 1979-09-25 Dropout compensating circuit Pending JPS5646386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12294379A JPS5646386A (en) 1979-09-25 1979-09-25 Dropout compensating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12294379A JPS5646386A (en) 1979-09-25 1979-09-25 Dropout compensating circuit

Publications (1)

Publication Number Publication Date
JPS5646386A true JPS5646386A (en) 1981-04-27

Family

ID=14848447

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12294379A Pending JPS5646386A (en) 1979-09-25 1979-09-25 Dropout compensating circuit

Country Status (1)

Country Link
JP (1) JPS5646386A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190015A (en) * 1984-03-12 1985-09-27 Hitachi Ltd Integrated circuit
JPS6310897A (en) * 1986-03-20 1988-01-18 Sanyo Electric Co Ltd Leading edge compensation circuit for color signal reproduction circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60190015A (en) * 1984-03-12 1985-09-27 Hitachi Ltd Integrated circuit
JPH0325052B2 (en) * 1984-03-12 1991-04-04 Hitachi Ltd
JPS6310897A (en) * 1986-03-20 1988-01-18 Sanyo Electric Co Ltd Leading edge compensation circuit for color signal reproduction circuit

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