DK124478A - Apparat til aflaesning af en registreringsbaerer som reflekterer optisk straaling - Google Patents

Apparat til aflaesning af en registreringsbaerer som reflekterer optisk straaling

Info

Publication number
DK124478A
DK124478A DK124478A DK124478A DK124478A DK 124478 A DK124478 A DK 124478A DK 124478 A DK124478 A DK 124478A DK 124478 A DK124478 A DK 124478A DK 124478 A DK124478 A DK 124478A
Authority
DK
Denmark
Prior art keywords
reading
optical radiation
reflecting optical
registration carrier
carrier reflecting
Prior art date
Application number
DK124478A
Other languages
Danish (da)
English (en)
Inventor
P F Greve
W G Opheij
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
Priority claimed from NL7703123A external-priority patent/NL7703123A/xx
Application filed by Philips Nv filed Critical Philips Nv
Publication of DK124478A publication Critical patent/DK124478A/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
    • G11B7/08Disposition 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
    • G11B7/0917Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • 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
    • G11B7/0917Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
    • G11B2007/0924Skewed beams methods (using an angled beam, i.e. a beam which is reflected from the disc at an angle different from 90°)
DK124478A 1977-03-23 1978-03-20 Apparat til aflaesning af en registreringsbaerer som reflekterer optisk straaling DK124478A (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7703123A NL7703123A (nl) 1977-03-23 1977-03-23 Inrichting voor het uitlezen van een optische stralingsreflekterende registratiedrager.
NL7706753A NL7706753A (nl) 1977-03-23 1977-06-20 Inrichting voor het uitlezen van een optische stralingsreflekterende informatiedrager.

Publications (1)

Publication Number Publication Date
DK124478A true DK124478A (da) 1978-09-24

Family

ID=26645307

Family Applications (1)

Application Number Title Priority Date Filing Date
DK124478A DK124478A (da) 1977-03-23 1978-03-20 Apparat til aflaesning af en registreringsbaerer som reflekterer optisk straaling

Country Status (16)

Country Link
JP (1) JPS6028055B2 (xx)
AR (1) AR217276A1 (xx)
AT (1) AT371275B (xx)
AU (1) AU516903B2 (xx)
BE (1) BE865140A (xx)
BR (1) BR7801692A (xx)
CA (1) CA1116294A (xx)
DD (1) DD135654A5 (xx)
DE (1) DE2810566A1 (xx)
DK (1) DK124478A (xx)
ES (1) ES468083A1 (xx)
FR (1) FR2385173A1 (xx)
GB (1) GB1589035A (xx)
IT (1) IT1093249B (xx)
NL (1) NL7706753A (xx)
SE (1) SE424677B (xx)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7809635A (nl) * 1978-09-22 1980-03-25 Philips Nv Inrichting voor het uitlezen van een optische registra- tiedrager bevattende een stralingsreflekterende infor- matiestruktuur.
NL186353C (nl) * 1979-06-12 1990-11-01 Philips Nv Inrichting voor het afbeelden van een maskerpatroon op een substraat voorzien van een opto-elektronisch detektiestelsel voor het bepalen van een afwijking tussen het beeldvlak van een projektielenzenstelsel en het substraatvlak.
FR2460523A1 (fr) * 1979-06-29 1981-01-23 Thomson Csf Tete de lecture optique a source laser a semi-conducteur et dispositif de lecture par reflexion d'un support d'information comportant une telle tete optique
JPS5870434A (ja) * 1981-10-22 1983-04-26 Toshiba Corp 光学ヘツド
JPS57186240A (en) * 1981-11-09 1982-11-16 Teac Co Optical reproducing device
JPS59119548A (ja) * 1982-12-25 1984-07-10 Pioneer Electronic Corp 光学式ピツクアツプ装置
US4630927A (en) * 1983-02-15 1986-12-23 General Electric Company Optical projector
JPS59125727U (ja) * 1983-02-15 1984-08-24 パイオニア株式会社 光学式情報ピツクアツプ装置
JPS60197950A (ja) * 1984-03-22 1985-10-07 Toshiba Corp 光学ヘツド
JPH0626972Y2 (ja) * 1986-10-03 1994-07-20 パイオニア株式会社 光学式ピツクアツプ装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2313716A1 (fr) * 1975-06-03 1976-12-31 Thomson Brandt Systeme optique de lecture par reflexion d'un support d'information

Also Published As

Publication number Publication date
DD135654A5 (de) 1979-05-16
BE865140A (fr) 1978-09-21
SE424677B (sv) 1982-08-02
NL7706753A (nl) 1978-12-22
SE7803140L (sv) 1978-09-24
FR2385173B1 (xx) 1985-05-10
ES468083A1 (es) 1978-12-16
IT7821384A0 (it) 1978-03-20
AT371275B (de) 1983-06-10
CA1116294A (en) 1982-01-12
AU3429278A (en) 1979-09-27
DE2810566C2 (xx) 1988-01-21
FR2385173A1 (fr) 1978-10-20
IT1093249B (it) 1985-07-19
JPS53118103A (en) 1978-10-16
DE2810566A1 (de) 1978-09-28
ATA200278A (de) 1982-10-15
BR7801692A (pt) 1979-01-02
AR217276A1 (es) 1980-03-14
GB1589035A (en) 1981-05-07
JPS6028055B2 (ja) 1985-07-02
AU516903B2 (en) 1981-06-25

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