DK133212B - Apparat til aflesning af en indspilningsberer, hvori information, f.eks. video- og/eller audioinformation er registreret i mindst et spor, samt indspilningsberer bestemt til aflesning i et spdant apparat - Google Patents

Apparat til aflesning af en indspilningsberer, hvori information, f.eks. video- og/eller audioinformation er registreret i mindst et spor, samt indspilningsberer bestemt til aflesning i et spdant apparat

Info

Publication number
DK133212B
DK133212B DK165073AA DK165073A DK133212B DK 133212 B DK133212 B DK 133212B DK 165073A A DK165073A A DK 165073AA DK 165073 A DK165073 A DK 165073A DK 133212 B DK133212 B DK 133212B
Authority
DK
Denmark
Prior art keywords
reading
recording carrier
information
spdant
registered
Prior art date
Application number
DK165073AA
Other languages
English (en)
Other versions
DK133212C (da
Inventor
G Bouwhuis
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of DK133212B publication Critical patent/DK133212B/da
Application granted granted Critical
Publication of DK133212C publication Critical patent/DK133212C/da

Links

Classifications

    • 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
    • G11B7/12Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1381Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
    • 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
    • G11B7/09Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0901Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
    • 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
    • G11B7/09Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • 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
    • G11B7/09Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0908Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
    • G11B7/0916Foucault or knife-edge methods
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
DK165073A 1972-03-29 1973-03-26 Apparat til aflesning af en indspilningsberer hvori information f.eks. video og eller audioinformation er registreret i mindst et spor samt indspilningsberer bestemt til aflesning i et sadant apparat DK133212C (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7204204,A NL171516C (nl) 1972-03-29 1972-03-29 Inrichting voor het langs optische weg uitlezen van een registratiedrager en plaatvormige registratiedrager bestemd om uitgelezen te worden met deze inrichting.

Publications (2)

Publication Number Publication Date
DK133212B true DK133212B (da) 1976-04-05
DK133212C DK133212C (da) 1977-03-28

Family

ID=19815734

Family Applications (1)

Application Number Title Priority Date Filing Date
DK165073A DK133212C (da) 1972-03-29 1973-03-26 Apparat til aflesning af en indspilningsberer hvori information f.eks. video og eller audioinformation er registreret i mindst et spor samt indspilningsberer bestemt til aflesning i et sadant apparat

Country Status (14)

Country Link
JP (1) JPS5313122B2 (da)
AT (1) AT328001B (da)
BE (1) BE797398A (da)
CA (1) CA1022676A (da)
CH (1) CH562492A5 (da)
DK (1) DK133212C (da)
ES (1) ES413062A1 (da)
FR (1) FR2178106B1 (da)
GB (1) GB1428731A (da)
IT (1) IT983615B (da)
NL (1) NL171516C (da)
NO (1) NO141389C (da)
SE (1) SE388957B (da)
ZA (1) ZA731525B (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2280150B1 (fr) * 1974-07-26 1977-01-07 Thomson Brandt Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture
JPS5828656B2 (ja) * 1978-01-24 1983-06-17 松下電器産業株式会社 光透過型情報担体の読取り装置

Also Published As

Publication number Publication date
DK133212C (da) 1977-03-28
SE388957B (sv) 1976-10-18
NO141389B (no) 1979-11-19
NL171516C (nl) 1983-04-05
GB1428731A (en) 1976-03-17
FR2178106A1 (da) 1973-11-09
NL7204204A (da) 1973-10-02
AU5370873A (en) 1974-09-26
CA1022676A (en) 1977-12-13
AT328001B (de) 1976-02-25
DE2313741A1 (de) 1973-10-11
JPS5313122B2 (da) 1978-05-08
NO141389C (no) 1980-02-27
FR2178106B1 (da) 1978-09-08
IT983615B (it) 1974-11-11
ES413062A1 (es) 1976-06-16
JPS4910057A (da) 1974-01-29
DE2313741B2 (de) 1976-02-26
NL171516B (nl) 1982-11-01
BE797398A (fr) 1973-09-27
ATA263273A (de) 1975-05-15
CH562492A5 (da) 1975-05-30
ZA731525B (en) 1974-10-30

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DK133212B (da) Apparat til aflesning af en indspilningsberer, hvori information, f.eks. video- og/eller audioinformation er registreret i mindst et spor, samt indspilningsberer bestemt til aflesning i et spdant apparat