FR2357974A1 - Dispositif de reduction du bruit et de la diaphonie dans un magnetoscope - Google Patents

Dispositif de reduction du bruit et de la diaphonie dans un magnetoscope

Info

Publication number
FR2357974A1
FR2357974A1 FR7720838A FR7720838A FR2357974A1 FR 2357974 A1 FR2357974 A1 FR 2357974A1 FR 7720838 A FR7720838 A FR 7720838A FR 7720838 A FR7720838 A FR 7720838A FR 2357974 A1 FR2357974 A1 FR 2357974A1
Authority
FR
France
Prior art keywords
diaphonis
vcr
noise
reduction device
talk
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.)
Granted
Application number
FR7720838A
Other languages
English (en)
Other versions
FR2357974B1 (fr
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
Priority claimed from JP51080127A external-priority patent/JPS606034B2/ja
Priority claimed from JP2185077A external-priority patent/JPS53106106A/ja
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2357974A1 publication Critical patent/FR2357974A1/fr
Application granted granted Critical
Publication of FR2357974B1 publication Critical patent/FR2357974B1/fr
Granted 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
    • H04N9/7908—Suppression of interfering signals at the reproducing side, e.g. noise
    • H04N9/7917—Suppression of interfering signals at the reproducing side, e.g. noise the interfering signals being cross-talk signals
    • 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
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
    • 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
    • H04N9/7908—Suppression of interfering signals at the reproducing side, e.g. noise
    • 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
    • H04N9/84—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 the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency

Abstract

L'invention concerne l'enregistrement magnétique de signaux vidéo. La partie d'enregistrement du dispositif de l'invention comporte un circuit de pré-accentuation non linéaire 66 associé à un circuit de pré-accentuation linéaire 67. Ces circuits suppriment efficacement les signaux d'interférences dus à la diaphonie entre pistes, ce qui permet d'utiliser une plus forte densité d'enregistrement. Application aux magnétoscopes pour la télévision en couleur.
FR7720838A 1976-07-06 1977-07-06 Dispositif de reduction du bruit et de la diaphonie dans un magnetoscope Granted FR2357974A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP51080127A JPS606034B2 (ja) 1976-07-06 1976-07-06 磁気記録装置
JP2185077A JPS53106106A (en) 1977-02-28 1977-02-28 Signal transmitting system

Publications (2)

Publication Number Publication Date
FR2357974A1 true FR2357974A1 (fr) 1978-02-03
FR2357974B1 FR2357974B1 (fr) 1982-12-10

Family

ID=26358975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720838A Granted FR2357974A1 (fr) 1976-07-06 1977-07-06 Dispositif de reduction du bruit et de la diaphonie dans un magnetoscope

Country Status (12)

Country Link
US (1) US4290082A (fr)
AT (1) AT378884B (fr)
AU (1) AU514329B2 (fr)
BR (1) BR7704424A (fr)
CA (1) CA1119286A (fr)
DE (1) DE2730131A1 (fr)
ES (3) ES460412A1 (fr)
FR (1) FR2357974A1 (fr)
GB (1) GB1579138A (fr)
IT (1) IT1079752B (fr)
NL (1) NL192861C (fr)
SE (1) SE438934B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503509A1 (fr) * 1981-04-06 1982-10-08 Sony Corp Circuit de traitement de signaux video

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4396953A (en) * 1979-12-06 1983-08-02 Victor Company Of Japan, Ltd. Color video signal dubbing system for collating the outputs of signal sources
JPS57125588A (en) * 1981-01-29 1982-08-04 Sony Corp Digital reproducing device for video signal
JPS57138009A (en) * 1981-02-20 1982-08-26 Hitachi Ltd Magnetic recorder and reproducer
JPS57140085A (en) * 1981-02-23 1982-08-30 Hitachi Ltd Audio signal recording and reproducing circuit
JPS5812149A (ja) * 1981-07-15 1983-01-24 Nippon Columbia Co Ltd ビデオ・デイスク及びその記録装置
EP0077010B1 (fr) * 1981-10-14 1986-03-12 TELEFUNKEN Fernseh und Rundfunk GmbH Circuit pour réduire le temps de montée des flancs d'un signal vidéo, notamment pour enregistreur vidéo
US4630132A (en) * 1982-12-08 1986-12-16 Hitachi, Ltd. Video signal recording/reproducing apparatus
JPS61210564A (ja) * 1985-02-18 1986-09-18 Toshiba Corp 記録媒体
US4761690A (en) * 1985-09-05 1988-08-02 Matsushita Electric Industrial Co., Ltd. Video tape recorder with particular format chrominance and luminance information
DE277000T1 (de) * 1987-01-27 1988-11-24 Victor Company Of Japan, Ltd., Yokohama, Kanagawa, Jp Geraet zur magnetischen aufzeichnung und/oder wiedergabe.
US5126846A (en) * 1988-08-08 1992-06-30 Kabushiki Kaisha Toshiba Non-linear amplifier and non-linear emphasis/deemphasis circuit using the same
KR940002656Y1 (ko) * 1989-05-26 1994-04-22 삼성전자 주식회사 디지탈 vcr의 동기 신호 공유회로
JP2768741B2 (ja) * 1989-06-12 1998-06-25 パイオニア株式会社 情報記録装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288930A (en) * 1964-11-12 1966-11-29 Winston Res Corp Wide-band signal-translating channel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3728475A (en) * 1969-07-04 1973-04-17 Victor Company Of Japan Beat signal suppression system for a system for transmitting a frequency modulated wave or a device for recording and reproducing a frequency modulated wave
US3781488A (en) * 1971-06-22 1973-12-25 Bell & Howell Co Playback system with frequency equalization by cascaded circuits performing in accordance with partial fraction expansions of factorial equalizing function terms
US3729693A (en) * 1971-08-02 1973-04-24 R Dolby Compressor/expander switching methods and apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288930A (en) * 1964-11-12 1966-11-29 Winston Res Corp Wide-band signal-translating channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2503509A1 (fr) * 1981-04-06 1982-10-08 Sony Corp Circuit de traitement de signaux video

Also Published As

Publication number Publication date
DE2730131C2 (fr) 1991-06-20
US4290082A (en) 1981-09-15
DE2730131A1 (de) 1978-01-19
FR2357974B1 (fr) 1982-12-10
BR7704424A (pt) 1978-04-04
ES470840A1 (es) 1979-02-01
ES460412A1 (es) 1978-12-01
AU514329B2 (en) 1981-02-05
NL192861B (nl) 1997-11-03
CA1119286A (fr) 1982-03-02
NL7707529A (nl) 1978-01-10
ES470841A1 (es) 1979-02-01
IT1079752B (it) 1985-05-13
SE438934B (sv) 1985-05-13
AU2668577A (en) 1979-01-04
ATA484677A (de) 1985-02-15
SE7707847L (sv) 1978-01-07
NL192861C (nl) 1998-03-04
GB1579138A (en) 1980-11-12
AT378884B (de) 1985-10-10

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