GB1286546A - Improvements in or relating to signal recording and reproducing apparatus - Google Patents

Improvements in or relating to signal recording and reproducing apparatus

Info

Publication number
GB1286546A
GB1286546A GB55021/69A GB5502169A GB1286546A GB 1286546 A GB1286546 A GB 1286546A GB 55021/69 A GB55021/69 A GB 55021/69A GB 5502169 A GB5502169 A GB 5502169A GB 1286546 A GB1286546 A GB 1286546A
Authority
GB
United Kingdom
Prior art keywords
record
recorded
light rays
relating
reproducing apparatus
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
GB55021/69A
Other languages
English (en)
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
Publication of GB1286546A publication Critical patent/GB1286546A/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
    • G11B7/24—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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
GB55021/69A 1969-01-23 1969-11-11 Improvements in or relating to signal recording and reproducing apparatus Expired GB1286546A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1903822A DE1903822C3 (de) 1969-01-23 1969-01-23 Vorrichtung zur Wiedergabe auf einem Trager gespeicherter Signale, Aufzeichnungs verfahren für einen Trager sowie Trager zur Wiedergabe mit der Vorrichtung

Publications (1)

Publication Number Publication Date
GB1286546A true GB1286546A (en) 1972-08-23

Family

ID=5723429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB55021/69A Expired GB1286546A (en) 1969-01-23 1969-11-11 Improvements in or relating to signal recording and reproducing apparatus

Country Status (6)

Country Link
US (3) US3798388A (de)
AT (1) AT308419B (de)
DE (1) DE1903822C3 (de)
FR (1) FR2037323A5 (de)
GB (1) GB1286546A (de)
NL (1) NL7000855A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856108A (en) * 1972-08-25 1989-08-08 Thomson-Csf Optical arrangement and a reading apparatus including detection of data elements diffractive along entire extent

Families Citing this family (21)

* 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
US5175725A (en) * 1972-08-25 1992-12-29 Thomson-Csf Optical disk arrangement with closed contours whose entire extent represents information
NL7211998A (de) * 1972-09-02 1974-03-05
US3944727A (en) * 1972-10-24 1976-03-16 Mca Discovision, Inc. Video disc player with movable mirror for directing light beam onto reflective disc
US4703467A (en) * 1972-10-24 1987-10-27 Discovision Associates Video disc read back scanner
JPS5410841B2 (de) * 1972-10-26 1979-05-10
NL7314267A (nl) * 1973-10-17 1975-04-21 Philips Nv Registratiedrager waarop informatie is aangebracht in een optisch uitleesbare struktuur.
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 (de) * 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 (nl) * 1979-09-27 1981-03-31 Philips Nv Registratiedrager waarin informatie is aangebracht in een optisch uitleesbare informatiestruktuur, alsmede inrichting voor het uitlezen daarvan.
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
AU3836385A (en) * 1984-01-30 1985-08-09 Array Technology Inc. Optical data storage and readout apparatus
JP3173839B2 (ja) * 1992-01-17 2001-06-04 パイオニア株式会社 記録媒体用情報再生装置及び再生方法
CN108873117B (zh) * 2017-05-16 2020-04-21 昇印光电（昆山）股份有限公司 光学元件、手机盖板及制备光学元件的模具

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4856108A (en) * 1972-08-25 1989-08-08 Thomson-Csf Optical arrangement and a reading apparatus including detection of data elements diffractive along entire extent
US4868808A (en) * 1972-08-25 1989-09-19 Thomson-Csf Optical disk arrangement with closed contours whose entire extent represents information
US5307332A (en) * 1972-08-25 1994-04-26 Thomson-Csf Optical disk arrangement with diffractive tracks and a photoelectric assembly providing positional control information

Also Published As

Publication number Publication date
US3818148A (en) 1974-06-18
NL7000855A (de) 1970-07-27
AT308419B (de) 1973-07-10
DE1903822A1 (de) 1970-11-26
US3798388A (en) 1974-03-19
DE1903822C3 (de) 1973-12-13
DE1903822B2 (de) 1973-03-15
US3798386A (en) 1974-03-19
FR2037323A5 (de) 1970-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee