FR2306584A1 - Systeme de correction du facteur de forme d'une onde rectangulaire lue a partir d'un support d'information - Google Patents

Systeme de correction du facteur de forme d'une onde rectangulaire lue a partir d'un support d'information

Info

Publication number
FR2306584A1
FR2306584A1 FR7609707A FR7609707A FR2306584A1 FR 2306584 A1 FR2306584 A1 FR 2306584A1 FR 7609707 A FR7609707 A FR 7609707A FR 7609707 A FR7609707 A FR 7609707A FR 2306584 A1 FR2306584 A1 FR 2306584A1
Authority
FR
France
Prior art keywords
form factor
rectangular wave
correction system
information media
wave read
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
FR7609707A
Other languages
English (en)
French (fr)
Other versions
FR2306584B3 (enExample
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.)
Thomson-Brandt SA
Original Assignee
Thomson-Brandt SA
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 Thomson-Brandt SA filed Critical Thomson-Brandt SA
Publication of FR2306584A1 publication Critical patent/FR2306584A1/fr
Application granted granted Critical
Publication of FR2306584B3 publication Critical patent/FR2306584B3/fr
Granted 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
    • 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

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
FR7609707A 1975-04-02 1976-04-02 Systeme de correction du facteur de forme d'une onde rectangulaire lue a partir d'un support d'information Granted FR2306584A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/564,388 US3988531A (en) 1975-04-02 1975-04-02 System for compensating for incorrect duty factor when reading out information stored in a video disc

Publications (2)

Publication Number Publication Date
FR2306584A1 true FR2306584A1 (fr) 1976-10-29
FR2306584B3 FR2306584B3 (enExample) 1978-12-22

Family

ID=24254269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7609707A Granted FR2306584A1 (fr) 1975-04-02 1976-04-02 Systeme de correction du facteur de forme d'une onde rectangulaire lue a partir d'un support d'information

Country Status (3)

Country Link
US (1) US3988531A (enExample)
CA (1) CA1089984A (enExample)
FR (1) FR2306584A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392562A1 (fr) * 1977-05-24 1978-12-22 Philips Nv Dispositif pour traiter un signal d'information

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2358797A1 (fr) * 1976-07-16 1978-02-10 Thomson Brandt Systeme de correction automatique du facteur de forme de l'onde porteuse issue de la lecture d'un support d'information
US4272786A (en) * 1978-10-16 1981-06-09 Rca Corporation Video disc playback apparatus with non-linear aperture correction
US4312013A (en) * 1979-09-19 1982-01-19 Rca Corporation Non-linear aperture correction circuit
NL8000123A (nl) * 1980-01-09 1981-08-03 Philips Nv Inrichting voor het schrijven van digitale informatie in een schijfvormige optisch uitleesbare registratiedrager.
US4309722A (en) * 1980-05-27 1982-01-05 Rca Corporation Video disc player noise reduction circuit
US4329712A (en) * 1980-06-24 1982-05-11 Rca Corporation Adaptive distortion elimination circuitry for a video disc player
US4360829A (en) * 1980-06-24 1982-11-23 Rca Corporation Active distortion elimination circuitry for a video disc player
JPS5778637A (en) 1980-10-31 1982-05-17 Matsushita Electric Ind Co Ltd Optical information recorder
US4549288A (en) * 1982-12-20 1985-10-22 North American Philips Corporation Apparatus for enhancing the playback signal in an optical data recording system
JPS61219286A (ja) * 1985-03-25 1986-09-29 Sony Corp 時間軸補正装置の書込クロツク発生回路
DE3676870D1 (de) * 1985-04-22 1991-02-21 Csk Corp Binaeres kodierverfahren fuer daten, welche von einer optischen platte gelesen werden und geraet dafuer.
GB2224911A (en) * 1988-11-09 1990-05-16 Philips Nv Method of and apparatus for assigning binary values to sample values
US5070495A (en) * 1989-04-12 1991-12-03 International Business Machines Corporation Write calibration for magnetooptic disk recorders
US5043971A (en) * 1989-09-28 1991-08-27 Tandy Corporation Method and apparatus for pre-compensation in an optical disc
US5128921A (en) * 1989-09-28 1992-07-07 Tandy Corporation Method and apparatus for pre-compensation in an optical disc
US5185733A (en) * 1990-03-01 1993-02-09 International Business Machines Corporation Calibrating lasers for optical recording using a maximal readback signal amplitude as a criterion
US5268893A (en) * 1991-10-18 1993-12-07 International Business Machines Corporation Write power calibration utilizing least squares fit of read-back signals for moving media memory

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL280738A (enExample) * 1961-07-10
GB1460911A (en) * 1973-03-20 1977-01-06 Rca Corp Colour picture and sound record and recording/playback apparatus and methods therefor
NL7402014A (nl) * 1974-02-14 1975-08-18 Philips Nv Inrichting voor het detekteren van signaaluit- vallen.
NL7402078A (nl) * 1974-02-15 1975-08-19 Philips Nv Inrichting voor het uitlezen van een schijfvormige registratiedrager.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392562A1 (fr) * 1977-05-24 1978-12-22 Philips Nv Dispositif pour traiter un signal d'information

Also Published As

Publication number Publication date
US3988531A (en) 1976-10-26
FR2306584B3 (enExample) 1978-12-22
CA1089984A (en) 1980-11-18

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Legal Events

Date Code Title Description
ST Notification of lapse