DE2521821A1 - Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction - Google Patents

Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction

Info

Publication number
DE2521821A1
DE2521821A1 DE19752521821 DE2521821A DE2521821A1 DE 2521821 A1 DE2521821 A1 DE 2521821A1 DE 19752521821 DE19752521821 DE 19752521821 DE 2521821 A DE2521821 A DE 2521821A DE 2521821 A1 DE2521821 A1 DE 2521821A1
Authority
DE
Germany
Prior art keywords
video disc
appearing during
time errors
deflection
reproducer
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.)
Withdrawn
Application number
DE19752521821
Other languages
German (de)
Inventor
Giovanni Odone
Christian Lietar
Claude Devenoges
Roland Cochard
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19752521821 priority Critical patent/DE2521821A1/en
Publication of DE2521821A1 publication Critical patent/DE2521821A1/en
Application status is Withdrawn legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/7605Television signal recording on discs or drums
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20Driving; Starting; Stopping; Control thereof
    • G11B19/28Speed controlling, regulating, or indicating
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/081Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam

Abstract

The video disc apparatus has a device for the compensation of time errors appearing during reproduction of recorded signals. Deflection of the element scanning the recorded signals takes place tangentially. Periodically occuring synchronisation signals, colour synchronisation signals etc. are separated, and their phase compated with that of reference signals. A control voltage corresponding to the phase deviation is used for the control of the disc driving motor, and also for the scanning element deflection. The deflection of the element is performed with the help of a rotatable coil which is coupled to a mirror and is positioned in magnetic field.
DE19752521821 1975-05-16 1975-05-16 Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction Withdrawn DE2521821A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752521821 DE2521821A1 (en) 1975-05-16 1975-05-16 Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752521821 DE2521821A1 (en) 1975-05-16 1975-05-16 Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction

Publications (1)

Publication Number Publication Date
DE2521821A1 true DE2521821A1 (en) 1976-11-25

Family

ID=5946707

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19752521821 Withdrawn DE2521821A1 (en) 1975-05-16 1975-05-16 Video disc recorder-reproducer - has device compensating for time errors appearing during signal reproduction

Country Status (1)

Country Link
DE (1) DE2521821A1 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007200A1 (en) * 1978-06-30 1980-01-23 Discovision Associates Method and apparatus for controlling the reading of information from an information storage medium
EP0011495A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for rotating an information storage disc
EP0011494A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for controllably rotating an information storage disc
EP0011493A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for precisely controlling the angular velocity of an information storage disc
FR2469772A1 (en) * 1979-11-15 1981-05-22 Sony Corp recording disk reproducing apparatus
EP0035287A2 (en) * 1978-03-27 1981-09-09 Discovision Associates Signal correction system and method
DE3137907A1 (en) * 1980-09-24 1982-06-09 Sony Corp Reproducing apparatus for disc recording
EP0057612A2 (en) * 1981-02-02 1982-08-11 Sanyo Electric Co., Ltd. Motor controlling circuit of reproducing apparatus and method of controlling
FR2502870A1 (en) * 1981-03-26 1982-10-01 Sony Corp Apparatus for reproducing a recording medium such as a pcm audio disk
FR2504713A1 (en) * 1981-04-27 1982-10-29 Thomson Csf Angular coding information support disc and rotation drive system of such a disk
DE3223464A1 (en) * 1981-06-23 1983-01-05 Sony Corp Servo system for controlling the speed of a motor for rotating a disc-
DE3224478A1 (en) * 1981-06-30 1983-01-20 Sony Corp An information signal reproducing arrangement
DE3241581A1 (en) * 1981-11-10 1983-05-19 Sony Corp record player
US4608610A (en) * 1980-08-22 1986-08-26 Victor Company Of Japan, Ltd. Jitter compensation system in rotary recording medium reproducing apparatus
EP0286179A1 (en) * 1987-04-08 1988-10-12 Philips Electronics N.V. Apparatus for reading record carriers having substantially concentric or spiral tracks

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035803A2 (en) * 1978-03-27 1981-09-16 Discovision Associates Disc spindle servo system
EP0035803A3 (en) * 1978-03-27 1982-02-24 Discovision Associates Disc spindle servo system
EP0035287A3 (en) * 1978-03-27 1982-04-14 Discovision Associates Signal correction system and method
EP0035287A2 (en) * 1978-03-27 1981-09-09 Discovision Associates Signal correction system and method
EP0007200A1 (en) * 1978-06-30 1980-01-23 Discovision Associates Method and apparatus for controlling the reading of information from an information storage medium
EP0011493A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for precisely controlling the angular velocity of an information storage disc
EP0011495A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for rotating an information storage disc
EP0011494A1 (en) * 1978-11-16 1980-05-28 Discovision Associates Method and apparatus for controllably rotating an information storage disc
FR2469772A1 (en) * 1979-11-15 1981-05-22 Sony Corp recording disk reproducing apparatus
US4608610A (en) * 1980-08-22 1986-08-26 Victor Company Of Japan, Ltd. Jitter compensation system in rotary recording medium reproducing apparatus
DE3137907A1 (en) * 1980-09-24 1982-06-09 Sony Corp Reproducing apparatus for disc recording
EP0057612A3 (en) * 1981-02-02 1983-02-09 Sanyo Electric Co., Ltd. Motor controlling circuit of reproducing apparatus and method of controlling
EP0057612A2 (en) * 1981-02-02 1982-08-11 Sanyo Electric Co., Ltd. Motor controlling circuit of reproducing apparatus and method of controlling
FR2502870A1 (en) * 1981-03-26 1982-10-01 Sony Corp Apparatus for reproducing a recording medium such as a pcm audio disk
FR2504713A1 (en) * 1981-04-27 1982-10-29 Thomson Csf Angular coding information support disc and rotation drive system of such a disk
US4556966A (en) * 1981-04-27 1985-12-03 Thomson-Csf Information carrier disk with angular coding means and a system for driving said disk in rotation
EP0064897A1 (en) * 1981-04-27 1982-11-17 Thomson-Csf Information carrier disc with angular coding and rotation drive system for such a disc
DE3223464A1 (en) * 1981-06-23 1983-01-05 Sony Corp Servo system for controlling the speed of a motor for rotating a disc-
DE3224478A1 (en) * 1981-06-30 1983-01-20 Sony Corp An information signal reproducing arrangement
DE3241581A1 (en) * 1981-11-10 1983-05-19 Sony Corp record player
EP0286179A1 (en) * 1987-04-08 1988-10-12 Philips Electronics N.V. Apparatus for reading record carriers having substantially concentric or spiral tracks

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Legal Events

Date Code Title Description
8141 Disposal/no request for examination