JPS4917046B1 - - Google Patents

Info

Publication number
JPS4917046B1
JPS4917046B1 JP45100103A JP10010370A JPS4917046B1 JP S4917046 B1 JPS4917046 B1 JP S4917046B1 JP 45100103 A JP45100103 A JP 45100103A JP 10010370 A JP10010370 A JP 10010370A JP S4917046 B1 JPS4917046 B1 JP S4917046B1
Authority
JP
Japan
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.)
Pending
Application number
JP45100103A
Other languages
Japanese (ja)
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 DE19691958858 external-priority patent/DE1958858C3/de
Application filed filed Critical
Publication of JPS4917046B1 publication Critical patent/JPS4917046B1/ja
Pending 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
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP45100103A 1969-11-15 1970-11-13 Pending JPS4917046B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691958858 DE1958858C3 (de) 1969-11-15 Einrichtung zur Lichtabtastung eines Trägers mit Rillen

Publications (1)

Publication Number Publication Date
JPS4917046B1 true JPS4917046B1 (enExample) 1974-04-26

Family

ID=5751873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45100103A Pending JPS4917046B1 (enExample) 1969-11-15 1970-11-13

Country Status (4)

Country Link
US (1) US3764759A (enExample)
JP (1) JPS4917046B1 (enExample)
FR (1) FR2069448A5 (enExample)
GB (1) GB1285108A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125245U (enExample) * 1981-01-30 1982-08-04

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010317A (en) * 1972-03-29 1977-03-01 U.S. Philips Corporation Apparatus for reading a record carrier in which information, for example video and/or audio information, is recorded in at least one track
FR2197495A5 (enExample) * 1972-08-25 1974-03-22 Thomson Csf
NL161284C (nl) * 1972-09-02 1980-01-15 Philips Nv Weergavestelsel voor een optisch uitleesbare informatie- structuur, alsmede registratiedrager voor gebruik daarin.
US3919562A (en) * 1974-05-20 1975-11-11 Zenith Radio Corp Slit detector for optical detector system
US4534021A (en) * 1981-12-10 1985-08-06 Discovision Associates Angularly multiplexed optical recording medium
US5161134A (en) * 1989-06-29 1992-11-03 Digital Equipment Corporation Method for increasing linear bit density in magneto-optical storage media

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB304848A (en) * 1927-10-31 1929-01-31 Brenchley Ernest George Mittel Improvements in or relating to sound recording
US1917003A (en) * 1929-01-21 1933-07-04 Columbia Phono Graph Company I Reproduction of sound records
US1956626A (en) * 1931-03-14 1934-05-01 Percy A Robbins Translucent sound record
US2497142A (en) * 1941-12-18 1950-02-14 Shepherd Judson O'd Sound recorder and reproducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57125245U (enExample) * 1981-01-30 1982-08-04

Also Published As

Publication number Publication date
DE1958858A1 (de) 1971-06-03
DE1958858B2 (de) 1976-03-04
US3764759A (en) 1973-10-09
FR2069448A5 (enExample) 1971-09-03
GB1285108A (en) 1972-08-09

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