FR2037323A5 - - Google Patents

Info

Publication number
FR2037323A5
FR2037323A5 FR7001984A FR7001984A FR2037323A5 FR 2037323 A5 FR2037323 A5 FR 2037323A5 FR 7001984 A FR7001984 A FR 7001984A FR 7001984 A FR7001984 A FR 7001984A FR 2037323 A5 FR2037323 A5 FR 2037323A5
Authority
FR
France
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
FR7001984A
Other languages
French (fr)
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Application granted granted Critical
Publication of FR2037323A5 publication Critical patent/FR2037323A5/fr
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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • 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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • 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
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • 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
    • G11B7/085—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam into, or out of, its operative position or across tracks, otherwise than during the transducing operation, e.g. for adjustment or preliminary positioning or track change or selection
    • 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
FR7001984A 1969-01-23 1970-01-20 Expired FR2037323A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1903822A DE1903822C3 (en) 1969-01-23 1969-01-23 Device for reproducing signals stored on a carrier, recording method for a carrier and carrier for reproducing with the device

Publications (1)

Publication Number Publication Date
FR2037323A5 true FR2037323A5 (en) 1970-12-31

Family

ID=5723429

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7001984A Expired FR2037323A5 (en) 1969-01-23 1970-01-20

Country Status (6)

Country Link
US (3) US3798386A (en)
AT (1) AT308419B (en)
DE (1) DE1903822C3 (en)
FR (1) FR2037323A5 (en)
GB (1) GB1286546A (en)
NL (1) NL7000855A (en)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909517A (en) * 1971-03-22 1975-09-30 Rca Corp Disc records with groove bottom depth variations
US5182743A (en) * 1972-08-25 1993-01-26 Thomson-Csf Optical disk arrangement with diffractive tracks allowing positional control
FR2197495A5 (en) * 1972-08-25 1974-03-22 Thomson Csf
US5175725A (en) * 1972-08-25 1992-12-29 Thomson-Csf Optical disk arrangement with closed contours whose entire extent represents information
NL7211998A (en) * 1972-09-02 1974-03-05
US4703467A (en) * 1972-10-24 1987-10-27 Discovision Associates Video disc read back scanner
US3944727A (en) * 1972-10-24 1976-03-16 Mca Discovision, Inc. Video disc player with movable mirror for directing light beam onto reflective disc
JPS5410841B2 (en) * 1972-10-26 1979-05-10
NL7314267A (en) * 1973-10-17 1975-04-21 Philips Nv REGISTRATION CARRIER ON WHICH INFORMATION HAS BEEN MADE IN AN OPTICALLY READABLE STRUCTURE.
US3919465A (en) * 1974-01-14 1975-11-11 Zenith Radio Corp Optical system for directly detecting spatially recorded signals
US3931460A (en) * 1974-02-04 1976-01-06 Zenith Radio Corporation Video disc with multiturn undulating storage track
JPS5760693B2 (en) * 1974-02-12 1982-12-21 Sony Corp
US3919562A (en) * 1974-05-20 1975-11-11 Zenith Radio Corp Slit detector for optical detector system
US3980811A (en) * 1974-09-03 1976-09-14 Nihon Denshi Kabushiki Kaisha Contacting pickup optical reproduction system
GB1509495A (en) * 1976-04-08 1978-05-04 Sony Corp Record disc and method of producing the same
GB1574595A (en) * 1977-03-15 1980-09-10 Rca Corp Video disc
NL7907180A (en) * 1979-09-27 1981-03-31 Philips Nv RECORD CONTAINER IN WHICH INFORMATION HAS BEEN INCLUDED IN AN OPTICALLY READABLE INFORMATION STRUCTURE AND EQUIPMENT FOR READING IT.
US4504934A (en) * 1980-05-02 1985-03-12 Matsushita Electric Industrial Co., Ltd. Optical signal reproducing apparatus
JPS57105828A (en) * 1980-12-19 1982-07-01 Matsushita Electric Ind Co Ltd Optical disk recording and reproducing system
WO1985003376A1 (en) * 1984-01-30 1985-08-01 Illuminated Data, Inc. Optical data storage and readout apparatus
JP3173839B2 (en) * 1992-01-17 2001-06-04 パイオニア株式会社 Information reproducing apparatus for recording medium and reproducing method
CN108873117B (en) * 2017-05-16 2020-04-21 昇印光电（昆山）股份有限公司 Optical element, mobile phone cover plate and mold for preparing optical element

Family Cites Families (9)

* 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
US1944202A (en) * 1929-10-04 1934-01-23 Columbia Phonograph Co Inc Apparatus for reproducing sound from records
US1956626A (en) * 1931-03-14 1934-05-01 Percy A Robbins Translucent sound record
US2092892A (en) * 1935-12-31 1937-09-14 Rca Corp Phonographic apparatus
US2497142A (en) * 1941-12-18 1950-02-14 Shepherd Judson O'd Sound recorder and reproducer
US2654810A (en) * 1949-11-15 1953-10-06 Miessner Inventions Inc Photoelectric translating system
US3287563A (en) * 1962-11-07 1966-11-22 Minnesota Mining & Mfg Spatial coherent reproducing system
US3403233A (en) * 1964-03-05 1968-09-24 Duane H. Cooper Method of making grooved records with compensation for reproduction errors

Also Published As

Publication number Publication date
DE1903822B2 (en) 1973-03-15
DE1903822C3 (en) 1973-12-13
DE1903822A1 (en) 1970-11-26
GB1286546A (en) 1972-08-23
AT308419B (en) 1973-07-10
US3798386A (en) 1974-03-19
US3798388A (en) 1974-03-19
US3818148A (en) 1974-06-18
NL7000855A (en) 1970-07-27

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse