JPS5658384A - Video tape recorder - Google Patents

Video tape recorder

Info

Publication number
JPS5658384A
JPS5658384A JP13449879A JP13449879A JPS5658384A JP S5658384 A JPS5658384 A JP S5658384A JP 13449879 A JP13449879 A JP 13449879A JP 13449879 A JP13449879 A JP 13449879A JP S5658384 A JPS5658384 A JP S5658384A
Authority
JP
Japan
Prior art keywords
circuit
level
playback output
playback
fed
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
JP13449879A
Other languages
Japanese (ja)
Inventor
Makoto Ishiodori
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP13449879A priority Critical patent/JPS5658384A/en
Publication of JPS5658384A publication Critical patent/JPS5658384A/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

Landscapes

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

Abstract

PURPOSE:To prevent the deterioration in picture quality and to reduce the guard band noise at special playback mode, by compensating the frequency or level characteristics of playback system in response to the level of envelope component detected from an RF playback output. CONSTITUTION:An RF playback output is fed to a level correction circuit 3 and an envelope detector 7. The detector 7 detects the envelope component of the RF playback output to obtain a DC voltage, this DC voltage is fed to a circuit 3, frequency correction circuit 4, and band limit circuit 6, and the level and frequency characteristics of a notch in RF playback output from a high pass filter 2 are corrected in response to the DC voltage level and the result is fed to an FM demodulation circuit 5. The RF playback output after correction is demodulated into a luminance signal at a circuit 5 and high band noise component is rejected at a band limit circuit 6.
JP13449879A 1979-10-18 1979-10-18 Video tape recorder Pending JPS5658384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13449879A JPS5658384A (en) 1979-10-18 1979-10-18 Video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13449879A JPS5658384A (en) 1979-10-18 1979-10-18 Video tape recorder

Publications (1)

Publication Number Publication Date
JPS5658384A true JPS5658384A (en) 1981-05-21

Family

ID=15129719

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13449879A Pending JPS5658384A (en) 1979-10-18 1979-10-18 Video tape recorder

Country Status (1)

Country Link
JP (1) JPS5658384A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139578A (en) * 1982-02-15 1983-08-18 Matsushita Electric Ind Co Ltd Picture quality controller
JPS58162179A (en) * 1982-03-23 1983-09-26 Sony Corp Reproducing device of video signal
JPS59167807A (en) * 1983-03-14 1984-09-21 Mitsubishi Electric Corp Magnetic recording and reproducing device
JPS6359287A (en) * 1986-08-29 1988-03-15 Toshiba Corp Video tape recorder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58139578A (en) * 1982-02-15 1983-08-18 Matsushita Electric Ind Co Ltd Picture quality controller
JPS58162179A (en) * 1982-03-23 1983-09-26 Sony Corp Reproducing device of video signal
JPS59167807A (en) * 1983-03-14 1984-09-21 Mitsubishi Electric Corp Magnetic recording and reproducing device
JPS6359287A (en) * 1986-08-29 1988-03-15 Toshiba Corp Video tape recorder

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