FR2439451A1 - VIDEODISK RECOVERY APPARATUS WITH NON-LINEAR OPENING CORRECTION - Google Patents

VIDEODISK RECOVERY APPARATUS WITH NON-LINEAR OPENING CORRECTION

Info

Publication number
FR2439451A1
FR2439451A1 FR7925587A FR7925587A FR2439451A1 FR 2439451 A1 FR2439451 A1 FR 2439451A1 FR 7925587 A FR7925587 A FR 7925587A FR 7925587 A FR7925587 A FR 7925587A FR 2439451 A1 FR2439451 A1 FR 2439451A1
Authority
FR
France
Prior art keywords
restitution
videodisk
signals
recovery apparatus
opening correction
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
FR7925587A
Other languages
French (fr)
Other versions
FR2439451B1 (en
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.)
RCA Corp
Original Assignee
RCA 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 US06/075,331 external-priority patent/US4312013A/en
Priority claimed from US06/075,330 external-priority patent/US4272786A/en
Application filed by RCA Corp filed Critical RCA Corp
Publication of FR2439451A1 publication Critical patent/FR2439451A1/en
Application granted granted Critical
Publication of FR2439451B1 publication Critical patent/FR2439451B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
    • G11B9/06—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using record carriers having variable electrical capacitance; Record carriers therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information

Landscapes

  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

L'INVENTION CONCERNE UN APPAREIL DE RESTITUTION DE L'INFORMATION SUR UN SUPPORT D'ENREGISTREMENT. SELON L'INVENTION, IL COMPREND UN MOYEN 88, 90, POUR RESTITUER DES SIGNAUX MODULES, CE MOYEN DE RESTITUTION AYANT UNE REPONSE NON LINEAIRE; UN MOYEN DE COMPENSATION NON LINEAIRE 93 RELIE AU MOYEN DE RESTITUTION, POUR REDUIRE L'INTERFERENCE RESULTANT DE LA REPONSE NON LINEAIRE DU MOYEN DE RESTITUTION, DANS LES SIGNAUX RESTITUES; UN MOYEN 96 RELIE AU MOYEN DE COMPENSATION POUR DEMODULER LES SIGNAUX; ET UN MOYEN 100 RELIE AU MOYEN DE DEMODULATION POUR TRAITER LES SIGNAUX DEMODULES. L'INVENTION S'APPLIQUE NOTAMMENT A LA RESTITUTION DE VIDEO-DISQUES.THE INVENTION RELATES TO AN APPARATUS FOR RESTITUTING INFORMATION ON A RECORDING MEDIA. ACCORDING TO THE INVENTION, IT INCLUDES A MEANS 88, 90, FOR RETURNING MODULATED SIGNALS, THIS RESTITUTION MEANS HAVING A NONLINEAR RESPONSE; A NON-LINEAR COMPENSATION MEANS 93 CONNECTED TO THE RESTITUTION MEANS, TO REDUCE THE INTERFERENCE RESULTING FROM THE NON-LINEAR RESPONSE OF THE RESTITUTION MEANS, IN THE RESTITUTED SIGNALS; A MEANS 96 LINKS TO THE COMPENSATION MEANS FOR DEMODULATING SIGNALS; AND A MEAN 100 LINKS TO THE DEMODULATION MEANS TO PROCESS DEMODULATED SIGNALS. THE INVENTION APPLIES IN PARTICULAR TO THE RESTITUTION OF VIDEO-DISCS.

FR7925587A 1978-10-16 1979-10-15 VIDEODISK RECOVERY APPARATUS WITH NON-LINEAR OPENING CORRECTION Granted FR2439451A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95138278A 1978-10-16 1978-10-16
US06/075,331 US4312013A (en) 1979-09-19 1979-09-19 Non-linear aperture correction circuit
US06/075,330 US4272786A (en) 1978-10-16 1979-09-19 Video disc playback apparatus with non-linear aperture correction

Publications (2)

Publication Number Publication Date
FR2439451A1 true FR2439451A1 (en) 1980-05-16
FR2439451B1 FR2439451B1 (en) 1984-05-18

Family

ID=27372657

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7925587A Granted FR2439451A1 (en) 1978-10-16 1979-10-15 VIDEODISK RECOVERY APPARATUS WITH NON-LINEAR OPENING CORRECTION

Country Status (6)

Country Link
DE (1) DE2941848C2 (en)
FR (1) FR2439451A1 (en)
GB (1) GB2035760B (en)
HK (1) HK56983A (en)
IT (1) IT1193239B (en)
PL (1) PL133529B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485782A1 (en) * 1980-06-24 1981-12-31 Rca Corp ADAPTIVE CIRCUIT FOR REMOVING DISTORTIONS FOR A VIDEO DRIVE
FR2485783A1 (en) * 1980-06-24 1981-12-31 Rca Corp ACTIVE DISTORTION ELIMINATING CIRCUIT FOR A VIDEO DRIVE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120207A (en) * 1981-01-19 1982-07-27 Pioneer Video Corp Reproducing device for multiple-recorded information

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340367A (en) * 1963-07-24 1967-09-05 Ampex Playback equalization scheme for a reproduced frequency modulated signal
DE2156305C2 (en) * 1971-11-12 1973-11-08 Dziewior, K., Dr.-Ing. Device for recording and / or reproducing a television signal, in particular for an optical disc
DE2211677A1 (en) * 1972-03-10 1973-09-13 Licentia Gmbh PLAYBACK FOR A DEVICE FOR RECORDING A TELEVISION SIGNAL
US3934087A (en) * 1972-10-07 1976-01-20 Victor Company Of Japan, Limited Angle modulated wave demodulation system
DE2547431C3 (en) * 1975-10-23 1978-04-06 Ted Bildplatten Ag Aeg-Telefunken- Teldec, Zug (Schweiz) Device for recording or playing back a video signal
DE2658944A1 (en) * 1976-12-24 1978-07-06 Bosch Gmbh Robert PROCEDURE AND CIRCUIT ARRANGEMENT FOR FREQUENCY RESPONSE CORRECTION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485782A1 (en) * 1980-06-24 1981-12-31 Rca Corp ADAPTIVE CIRCUIT FOR REMOVING DISTORTIONS FOR A VIDEO DRIVE
FR2485783A1 (en) * 1980-06-24 1981-12-31 Rca Corp ACTIVE DISTORTION ELIMINATING CIRCUIT FOR A VIDEO DRIVE

Also Published As

Publication number Publication date
GB2035760A (en) 1980-06-18
DE2941848A1 (en) 1980-04-30
IT7926438A0 (en) 1979-10-11
PL133529B1 (en) 1985-06-29
HK56983A (en) 1983-11-25
GB2035760B (en) 1983-05-11
FR2439451B1 (en) 1984-05-18
DE2941848C2 (en) 1986-01-16
IT1193239B (en) 1988-06-15
PL218992A1 (en) 1980-08-11

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Legal Events

Date Code Title Description
ST Notification of lapse