JPS57190490A - Signal processing circuit of magnetic recording and reproducing device - Google Patents

Signal processing circuit of magnetic recording and reproducing device

Info

Publication number
JPS57190490A
JPS57190490A JP56073551A JP7355181A JPS57190490A JP S57190490 A JPS57190490 A JP S57190490A JP 56073551 A JP56073551 A JP 56073551A JP 7355181 A JP7355181 A JP 7355181A JP S57190490 A JPS57190490 A JP S57190490A
Authority
JP
Japan
Prior art keywords
signal
luminance signal
output
recording
converter
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
JP56073551A
Other languages
Japanese (ja)
Inventor
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 JP56073551A priority Critical patent/JPS57190490A/en
Priority to GB8213950A priority patent/GB2099658B/en
Priority to DE19823218538 priority patent/DE3218538C2/en
Publication of JPS57190490A publication Critical patent/JPS57190490A/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
    • 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
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
    • 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
    • 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

Landscapes

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

Abstract

PURPOSE: To compensate a relative delay of a chroma signal, to elevate a picture quality, and also to improve a damping characteristic, by providing a delaying circuit for 1H-delaying a luminance signal, on a recording or reproducing signal processing circuit.
CONSTITUTION: A luminance signal and a chroma signal in a recording video output signal from an input terminal 13 are led to an output of an LPF15 and an output of a BPF18, respectively. The luminance signal from this LPF15 is 1H-delayed by a 1H delaying circuit 15, is FM-modulated by an FM modulator 16, and is applied to a recording amplifier 17. Also, the chroma signal is converted to a low-band converting chroma signal by a down-converter 19, is applied to the amplifier 17, and an output of the amplifier 17 is provided to a recording head 20. This delaying circuit 15 is constituted of an up-converter 27, a glass 1H delay line 28 whose band center frequency is about 12MHz, and a down-converter 29, so that the luminance signal and the band of the FM signal after the luminance signal has been modulated can be nearly secured. In this way, not only the picture quality is elevated but also the timing chracteristic is improved by a simple circuit.
COPYRIGHT: (C)1982,JPO&Japio
JP56073551A 1981-05-18 1981-05-18 Signal processing circuit of magnetic recording and reproducing device Pending JPS57190490A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56073551A JPS57190490A (en) 1981-05-18 1981-05-18 Signal processing circuit of magnetic recording and reproducing device
GB8213950A GB2099658B (en) 1981-05-18 1982-05-13 Video signal processing circuit for a pal vtr system
DE19823218538 DE3218538C2 (en) 1981-05-18 1982-05-17 Magnetic tape recorder and reproducer for recording and reproducing PAL video signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56073551A JPS57190490A (en) 1981-05-18 1981-05-18 Signal processing circuit of magnetic recording and reproducing device

Publications (1)

Publication Number Publication Date
JPS57190490A true JPS57190490A (en) 1982-11-24

Family

ID=13521480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56073551A Pending JPS57190490A (en) 1981-05-18 1981-05-18 Signal processing circuit of magnetic recording and reproducing device

Country Status (3)

Country Link
JP (1) JPS57190490A (en)
DE (1) DE3218538C2 (en)
GB (1) GB2099658B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100275587B1 (en) * 1991-06-07 2000-12-15 루엘랑 브리지뜨 Video recoder
KR100873098B1 (en) * 2001-04-25 2008-12-09 톰슨 라이센싱 Video apparatus, process for a video apparatus and video recorder

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3939520A1 (en) * 1989-11-30 1991-06-06 Nokia Unterhaltungselektronik CIRCUIT TO RECOVER THE CHROMA SIGNAL
JPH06205443A (en) * 1992-12-29 1994-07-22 Sony Corp Video signal recording device and video signal recording and reproducing device
EP1261214A3 (en) * 2001-04-25 2006-05-10 Thomson Licensing Method and circuit for video signal correction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646383A (en) * 1979-09-21 1981-04-27 Sony Corp Reproducing device for video signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005473A (en) * 1975-04-25 1977-01-25 Basf Aktiengesellschaft Method and apparatus for synchronizing record and playback of video signals
NL7506411A (en) * 1975-05-30 1976-12-02 Philips Corp SIGNAL FAILURE COMPENSATION DEVICE.
GB1582984A (en) * 1976-08-09 1981-01-21 Rca Corp Video signal recording systems

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5646383A (en) * 1979-09-21 1981-04-27 Sony Corp Reproducing device for video signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100275587B1 (en) * 1991-06-07 2000-12-15 루엘랑 브리지뜨 Video recoder
KR100873098B1 (en) * 2001-04-25 2008-12-09 톰슨 라이센싱 Video apparatus, process for a video apparatus and video recorder

Also Published As

Publication number Publication date
GB2099658B (en) 1985-05-15
DE3218538A1 (en) 1982-12-16
DE3218538C2 (en) 1985-02-21
GB2099658A (en) 1982-12-08

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