GB1286546A - Improvements in or relating to signal recording and reproducing apparatus - Google Patents
Improvements in or relating to signal recording and reproducing apparatusInfo
- 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
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)
Abstract
1286546 Recording and playback LICENTIA PATENT-VERWALTUNGS GmbH 11 Nov 1969 [23 Jan 1969] 55021/69 Heading G5R A hill-and-dale record 1 is scanned and played back by means of a light beam 5 producing, by either refraction as shown, or reflection, Figs. 3, 5 and 7 (not shown), convergent and divergent light rays from the record to give variations in light intensity at an aperture 8 communicating with a photo-electric device (9), Fig. 1 (not shown). The signals to be recorded modulate, in frequency or phase, a carrier and the recorded amplitude may be varied with the recorded wavelength so that the successive deformations of the record surface form, in longitudinal section, different-sized arcs of identical circles or parabolas. The bottom of the record groove may be inclined sideways in order to direct the reflected light rays (5<SP>1</SP>) away from the incident beam (5), Fig. 5 (not shown).
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 |
---|---|
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 (en) |
AT (1) | AT308419B (en) |
DE (1) | DE1903822C3 (en) |
FR (1) | FR2037323A5 (en) |
GB (1) | GB1286546A (en) |
NL (1) | NL7000855A (en) |
Cited By (1)
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)
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 |
US5175725A (en) * | 1972-08-25 | 1992-12-29 | Thomson-Csf | Optical disk arrangement with closed contours whose entire extent represents information |
US5182743A (en) * | 1972-08-25 | 1993-01-26 | Thomson-Csf | Optical disk arrangement with diffractive tracks allowing positional control |
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 |
EP0169882A1 (en) * | 1984-01-30 | 1986-02-05 | 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)
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 |
-
1969
- 1969-01-23 DE DE1903822A patent/DE1903822C3/en not_active Expired
- 1969-11-11 GB GB55021/69A patent/GB1286546A/en not_active Expired
-
1970
- 1970-01-19 AT AT47370A patent/AT308419B/en not_active IP Right Cessation
- 1970-01-20 FR FR7001984A patent/FR2037323A5/fr not_active Expired
- 1970-01-21 NL NL7000855A patent/NL7000855A/xx not_active Application Discontinuation
-
1971
- 1971-09-13 US US00179991A patent/US3798388A/en not_active Expired - Lifetime
- 1971-09-13 US US00179990A patent/US3798386A/en not_active Expired - Lifetime
-
1972
- 1972-09-29 US US00295011A patent/US3818148A/en not_active Expired - Lifetime
Cited By (3)
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 |
---|---|
AT308419B (en) | 1973-07-10 |
NL7000855A (en) | 1970-07-27 |
DE1903822A1 (en) | 1970-11-26 |
US3798386A (en) | 1974-03-19 |
US3798388A (en) | 1974-03-19 |
DE1903822B2 (en) | 1973-03-15 |
US3818148A (en) | 1974-06-18 |
DE1903822C3 (en) | 1973-12-13 |
FR2037323A5 (en) | 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 |