JPS57107683A - Dropout compensating circuit for video signal - Google Patents

Dropout compensating circuit for video signal

Info

Publication number
JPS57107683A
JPS57107683A JP55184244A JP18424480A JPS57107683A JP S57107683 A JPS57107683 A JP S57107683A JP 55184244 A JP55184244 A JP 55184244A JP 18424480 A JP18424480 A JP 18424480A JP S57107683 A JPS57107683 A JP S57107683A
Authority
JP
Japan
Prior art keywords
dropout
signal
reproduced
luminance signal
video signal
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
JP55184244A
Other languages
Japanese (ja)
Inventor
Osamu Nagahara
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 JP55184244A priority Critical patent/JPS57107683A/en
Publication of JPS57107683A publication Critical patent/JPS57107683A/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)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To achieve compensation of dropout for luminance and chroma signals with timing having a margin, by monitoring the luminance signal before demodulation in advance and detecting the dropout. CONSTITUTION:A reproduced FM luminance signal and a reproduced low frequency conversion chroma signal are demodulated at a luminance signal demodulator 13 and a chroma signal demodulator 14, added at an adder 15 and applied via a switch 16. A reproduced FM luminance signal is inputted to a dropout detector 21 via a delay circuit 20 and the dropout can be detected in advance. When the dropout is detected, a switch 16 is selected to a terminal Y and a signal is applied to an output terminal 17 via a dropout compensating delay circuit 18 and an amplifier 19.
JP55184244A 1980-12-25 1980-12-25 Dropout compensating circuit for video signal Pending JPS57107683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55184244A JPS57107683A (en) 1980-12-25 1980-12-25 Dropout compensating circuit for video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55184244A JPS57107683A (en) 1980-12-25 1980-12-25 Dropout compensating circuit for video signal

Publications (1)

Publication Number Publication Date
JPS57107683A true JPS57107683A (en) 1982-07-05

Family

ID=16149900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55184244A Pending JPS57107683A (en) 1980-12-25 1980-12-25 Dropout compensating circuit for video signal

Country Status (1)

Country Link
JP (1) JPS57107683A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591898A (en) * 1983-10-17 1986-05-27 U.S. Philips Corporation Signal-dropout correction circuit for correcting video signals disturbed by signal dropouts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4591898A (en) * 1983-10-17 1986-05-27 U.S. Philips Corporation Signal-dropout correction circuit for correcting video signals disturbed by signal dropouts

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