DK135558C - - Google Patents

Info

Publication number
DK135558C
DK135558C DK477973A DK477973A DK135558C DK 135558 C DK135558 C DK 135558C DK 477973 A DK477973 A DK 477973A DK 477973 A DK477973 A DK 477973A DK 135558 C DK135558 C DK 135558C
Authority
DK
Denmark
Application number
DK477973A
Other languages
Danish (da)
Other versions
DK135558B (da
Inventor
G Bouwhuis
Original Assignee
Philips' Glfb N.V.
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 NL7211996A external-priority patent/NL7211996A/xx
Priority claimed from NL7212044A external-priority patent/NL7212044A/xx
Application filed by Philips' Glfb N.V. filed Critical Philips' Glfb N.V.
Publication of DK135558B publication Critical patent/DK135558B/da
Application granted granted Critical
Publication of DK135558C publication Critical patent/DK135558C/da

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
DK477973A 1972-09-02 1973-08-30 Apparat til aflæsning af en registreringsbærer, hvorpå information er registreret i mindst et spor. DK135558B (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7211996A NL7211996A (fr) 1972-09-02 1972-09-02
NL7212044A NL7212044A (fr) 1972-09-05 1972-09-05

Publications (2)

Publication Number Publication Date
DK135558B DK135558B (da) 1977-05-16
DK135558C true DK135558C (fr) 1977-10-24

Family

ID=26644797

Family Applications (1)

Application Number Title Priority Date Filing Date
DK477973A DK135558B (da) 1972-09-02 1973-08-30 Apparat til aflæsning af en registreringsbærer, hvorpå information er registreret i mindst et spor.

Country Status (15)

Country Link
JP (1) JPS5330453B2 (fr)
AR (1) AR198680A1 (fr)
AT (1) AT328002B (fr)
BE (1) BE804328A (fr)
CA (1) CA1005907A (fr)
CH (1) CH569327A5 (fr)
DK (1) DK135558B (fr)
ES (1) ES418390A1 (fr)
FR (1) FR2198203B1 (fr)
GB (1) GB1441175A (fr)
IT (1) IT990420B (fr)
NO (1) NO141671C (fr)
PL (1) PL86219B1 (fr)
SE (1) SE394154B (fr)
YU (1) YU39711B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1013854A (en) * 1973-02-20 1977-07-12 John S. Winslow Videodisc mastering system
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
JPS5922289B2 (ja) * 1975-11-20 1984-05-25 ソニー株式会社 ジヨウホウケンシユツソウチ
JPS5916331B2 (ja) * 1975-11-27 1984-04-14 パイオニア株式会社 コウガクシキシンゴウヨミトリソウチ
US4097895A (en) * 1976-03-19 1978-06-27 Rca Corporation Multilayer optical record
FR2470391A1 (fr) * 1979-11-21 1981-05-29 Thomson Csf Dispositif optique stigmatique d'emission-reception de rayonnements coherents et tete optique d'enregistrement-lecture comprenant un tel dispositif
NL8004892A (nl) * 1980-08-29 1982-04-01 Philips Nv Inrichting voor het verwerken van optische informatie en werkwijze voor het vervaardigen van een coma-correctieplaat zoals toegepast in een dergelijke inrichting.
JPS5997713U (ja) * 1982-12-20 1984-07-02 市川毛織株式会社 スキマ−
JPS6234127A (ja) * 1985-08-08 1987-02-14 Konishiroku Photo Ind Co Ltd 光変調方式

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus
JPS5443710B2 (fr) * 1972-03-15 1979-12-21

Also Published As

Publication number Publication date
ES418390A1 (es) 1976-03-16
AR198680A1 (es) 1974-07-15
CA1005907A (en) 1977-02-22
YU39711B (en) 1985-04-30
DE2341824A1 (de) 1974-03-14
AU5978073A (en) 1975-03-06
ATA756073A (de) 1975-05-15
SE394154B (sv) 1977-06-06
GB1441175A (en) 1976-06-30
JPS4965726A (fr) 1974-06-26
AT328002B (de) 1976-02-25
DK135558B (da) 1977-05-16
DE2341824B2 (de) 1976-10-14
IT990420B (it) 1975-06-20
FR2198203A1 (fr) 1974-03-29
PL86219B1 (fr) 1976-05-31
BE804328A (fr) 1974-02-28
JPS5330453B2 (fr) 1978-08-26
NO141671B (no) 1980-01-07
NO141671C (no) 1980-04-16
YU231773A (en) 1982-06-30
FR2198203B1 (fr) 1979-08-03
CH569327A5 (fr) 1975-11-14

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Legal Events

Date Code Title Description
PBP Patent lapsed