SE355716B - - Google Patents
Info
- Publication number
- SE355716B SE355716B SE01694/69A SE169469A SE355716B SE 355716 B SE355716 B SE 355716B SE 01694/69 A SE01694/69 A SE 01694/69A SE 169469 A SE169469 A SE 169469A SE 355716 B SE355716 B SE 355716B
- Authority
- SE
- Sweden
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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0901—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following only
-
- 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
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1398—Means for shaping the cross-section of the beam, e.g. into circular or elliptical cross-section
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB0096891 | 1968-03-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE355716B true SE355716B (es) | 1973-04-30 |
Family
ID=6988984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE01694/69A SE355716B (es) | 1968-03-01 | 1969-02-07 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3567855A (es) |
BE (1) | BE729191A (es) |
CH (1) | CH477738A (es) |
DE (1) | DE1613990A1 (es) |
FR (1) | FR1598065A (es) |
GB (1) | GB1266571A (es) |
NL (1) | NL6901968A (es) |
SE (1) | SE355716B (es) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2197495A5 (es) * | 1972-08-25 | 1974-03-22 | Thomson Csf | |
NL7212044A (es) * | 1972-09-05 | 1974-03-07 | ||
US4703467A (en) * | 1972-10-24 | 1987-10-27 | Discovision Associates | Video disc read back scanner |
US4282598A (en) * | 1972-10-24 | 1981-08-04 | Discovision Associates | Video disc read back scanner |
US3829622A (en) * | 1972-10-24 | 1974-08-13 | Mca Disco Vision | Video disc player with variably biased pneumatic head |
US4451913A (en) * | 1972-10-24 | 1984-05-29 | Discovision Associates | Video disc read back scanner |
FR2266932B1 (es) * | 1973-03-02 | 1977-09-02 | Thomson Brandt | |
FR2260163B1 (es) * | 1974-02-04 | 1979-08-03 | Thomson Brandt | |
DE2418195A1 (de) * | 1974-04-13 | 1975-11-06 | Bosch Gmbh Robert | Verfahren zur fuehrung eines lichtstrahls auf einer signalspur |
DE2426331C2 (de) * | 1974-05-29 | 1982-05-06 | Robert Bosch Gmbh, 7000 Stuttgart | Piezoelektrisches Lichtstrahlablenksystem |
US3983317A (en) * | 1974-12-09 | 1976-09-28 | Teletype Corporation | Astigmatizer for laser recording and reproducing system |
US4065786A (en) * | 1975-09-30 | 1977-12-27 | Rca Corporation | Videodisc playback system |
US4577302A (en) * | 1983-03-14 | 1986-03-18 | Dolby Laboratories Licensing Corporation | Apparatus for reproducing motion picture film photographic sound-tracks to correct reproduction errors and reduce noise |
JPS60253027A (ja) * | 1984-05-29 | 1985-12-13 | Canon Inc | 光学的情報処理装置 |
FR2576130B1 (fr) * | 1985-01-15 | 1989-07-13 | Thomson Csf | Memoire numerique a film photographique couleur, et dispositif de lecture optique correspondant |
US5056081A (en) * | 1990-01-02 | 1991-10-08 | Tandy Corporation | System and method for erasing light-responsive optical disks |
-
1968
- 1968-03-01 DE DE19681613990 patent/DE1613990A1/de active Granted
- 1968-12-23 FR FR1598065D patent/FR1598065A/fr not_active Expired
-
1969
- 1969-01-30 CH CH141369A patent/CH477738A/de not_active IP Right Cessation
- 1969-02-07 NL NL6901968A patent/NL6901968A/xx not_active Application Discontinuation
- 1969-02-07 SE SE01694/69A patent/SE355716B/xx unknown
- 1969-02-28 BE BE729191A patent/BE729191A/xx unknown
- 1969-03-03 GB GB1266571D patent/GB1266571A/en not_active Expired
- 1969-03-03 US US803858A patent/US3567855A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3567855A (en) | 1971-03-02 |
NL6901968A (es) | 1969-09-03 |
FR1598065A (es) | 1970-06-29 |
DE1613990B2 (es) | 1974-10-31 |
GB1266571A (es) | 1972-03-15 |
CH477738A (de) | 1969-08-31 |
DE1613990C3 (es) | 1975-06-26 |
BE729191A (es) | 1969-08-01 |
DE1613990A1 (de) | 1970-08-20 |