JPS5783983A - Magnetic recorder and reproducer - Google Patents

Magnetic recorder and reproducer

Info

Publication number
JPS5783983A
JPS5783983A JP55159494A JP15949480A JPS5783983A JP S5783983 A JPS5783983 A JP S5783983A JP 55159494 A JP55159494 A JP 55159494A JP 15949480 A JP15949480 A JP 15949480A JP S5783983 A JPS5783983 A JP S5783983A
Authority
JP
Japan
Prior art keywords
dropout
output
switch
signal
led
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
JP55159494A
Other languages
Japanese (ja)
Inventor
Akira Shibata
Koichi Hirose
Noboru Kojima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55159494A priority Critical patent/JPS5783983A/en
Publication of JPS5783983A publication Critical patent/JPS5783983A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation

Landscapes

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

Abstract

PURPOSE:To suppress the generation of noise by compensating a >=1H dropout at an FM signal stage, and by compensating a dropout with a video signal with regard to noise suppression at the beginning of the generation of the dropout. CONSTITUTION:In normal operation, the output of a preamplifier 2 is led to the output of an FM switch 5 and the output of an FM demodulator 7 is led to the output of a video switch 13. If a dropout occurs, the FM switch 5 and video switch 13 are driven about 0.7mus after the occurrence by the output of a pulser 4. To the output of the FM demodulator 7, a signal 0.3mus before the occurrence of the dropout is led and at its timing, switching to a video signal 1H before is performed, eliminating dropout noise. When the dropout continues for more than 1H, the input signal to the FM switch 5 is switched to the output signal of a 1H delay line 8.
JP55159494A 1980-11-14 1980-11-14 Magnetic recorder and reproducer Pending JPS5783983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55159494A JPS5783983A (en) 1980-11-14 1980-11-14 Magnetic recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159494A JPS5783983A (en) 1980-11-14 1980-11-14 Magnetic recorder and reproducer

Publications (1)

Publication Number Publication Date
JPS5783983A true JPS5783983A (en) 1982-05-26

Family

ID=15694987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159494A Pending JPS5783983A (en) 1980-11-14 1980-11-14 Magnetic recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS5783983A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580966A (en) * 1978-12-14 1980-06-18 Matsushita Electric Ind Co Ltd Noise eliminating system for television signal

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5580966A (en) * 1978-12-14 1980-06-18 Matsushita Electric Ind Co Ltd Noise eliminating system for television signal

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