CH569327A5 - - Google Patents

Info

Publication number
CH569327A5
CH569327A5 CH1246973A CH1246973A CH569327A5 CH 569327 A5 CH569327 A5 CH 569327A5 CH 1246973 A CH1246973 A CH 1246973A CH 1246973 A CH1246973 A CH 1246973A CH 569327 A5 CH569327 A5 CH 569327A5
Authority
CH
Switzerland
Application number
CH1246973A
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 NL7211996A external-priority patent/NL7211996A/xx
Priority claimed from NL7212044A external-priority patent/NL7212044A/xx
Application filed by Philips Nv filed Critical Philips Nv
Publication of CH569327A5 publication Critical patent/CH569327A5/xx

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
CH1246973A 1972-09-02 1973-08-30 CH569327A5 (xx)

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
CH569327A5 true CH569327A5 (xx) 1975-11-14

Family

ID=26644797

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1246973A CH569327A5 (xx) 1972-09-02 1973-08-30

Country Status (15)

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

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 (xx) * 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 (xx) 1974-06-26
AT328002B (de) 1976-02-25
DK135558B (da) 1977-05-16
DE2341824B2 (de) 1976-10-14
IT990420B (it) 1975-06-20
FR2198203A1 (xx) 1974-03-29
PL86219B1 (xx) 1976-05-31
BE804328A (fr) 1974-02-28
DK135558C (xx) 1977-10-24
JPS5330453B2 (xx) 1978-08-26
NO141671B (no) 1980-01-07
NO141671C (no) 1980-04-16
YU231773A (en) 1982-06-30
FR2198203B1 (xx) 1979-08-03

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Legal Events

Date Code Title Description
PL Patent ceased