CA1005907A - Apparatus for reading a record carrier on which information is recorded in at least one track - Google Patents

Apparatus for reading a record carrier on which information is recorded in at least one track

Info

Publication number
CA1005907A
CA1005907A CA180,004A CA180004A CA1005907A CA 1005907 A CA1005907 A CA 1005907A CA 180004 A CA180004 A CA 180004A CA 1005907 A CA1005907 A CA 1005907A
Authority
CA
Canada
Prior art keywords
track
recorded
reading
information
record carrier
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.)
Expired
Application number
CA180,004A
Other languages
English (en)
Other versions
CA180004S (en
Inventor
Gijsbertus Bouwhuis
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA1005907A publication Critical patent/CA1005907A/en
Expired legal-status Critical Current

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
CA180,004A 1972-09-02 1973-08-30 Apparatus for reading a record carrier on which information is recorded in at least one track Expired CA1005907A (en)

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 (1)

Publication Number Publication Date
CA1005907A true CA1005907A (en) 1977-02-22

Family

ID=26644797

Family Applications (1)

Application Number Title Priority Date Filing Date
CA180,004A Expired CA1005907A (en) 1972-09-02 1973-08-30 Apparatus for reading a record carrier on which information is recorded in at least one track

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
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
DK135558C (fr) 1977-10-24
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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