IT983615B - Apparecchiatura per leggere un mezzo portante di registrazioni con almeno una pista di registra zione - Google Patents
Apparecchiatura per leggere un mezzo portante di registrazioni con almeno una pista di registra zioneInfo
- Publication number
- IT983615B IT983615B IT22144/73A IT2214473A IT983615B IT 983615 B IT983615 B IT 983615B IT 22144/73 A IT22144/73 A IT 22144/73A IT 2214473 A IT2214473 A IT 2214473A IT 983615 B IT983615 B IT 983615B
- Authority
- IT
- Italy
- Prior art keywords
- recordings
- reading
- equipment
- recording track
- carrier media
- Prior art date
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
- G11B7/08—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
- G11B7/0908—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 focusing 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
- G11B7/08—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
- G11B7/0908—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 focusing only
- G11B7/0916—Foucault or knife-edge methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/7605—Television signal recording on discs or drums
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optical Recording Or Reproduction (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7204204,A NL171516C (nl) | 1972-03-29 | 1972-03-29 | Inrichting voor het langs optische weg uitlezen van een registratiedrager en plaatvormige registratiedrager bestemd om uitgelezen te worden met deze inrichting. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IT983615B true IT983615B (it) | 1974-11-11 |
Family
ID=19815734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT22144/73A IT983615B (it) | 1972-03-29 | 1973-03-26 | Apparecchiatura per leggere un mezzo portante di registrazioni con almeno una pista di registra zione |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS5313122B2 (de) |
| AT (1) | AT328001B (de) |
| BE (1) | BE797398A (de) |
| CA (1) | CA1022676A (de) |
| CH (1) | CH562492A5 (de) |
| DK (1) | DK133212C (de) |
| ES (1) | ES413062A1 (de) |
| FR (1) | FR2178106B1 (de) |
| GB (1) | GB1428731A (de) |
| IT (1) | IT983615B (de) |
| NL (1) | NL171516C (de) |
| NO (1) | NO141389C (de) |
| SE (1) | SE388957B (de) |
| ZA (1) | ZA731525B (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2280150B1 (fr) * | 1974-07-26 | 1977-01-07 | Thomson Brandt | Dispositif de detection d'ecart de mise au point d'une tete de lecture optique par rapport a une surface de lecture |
| JPS5828656B2 (ja) * | 1978-01-24 | 1983-06-17 | 松下電器産業株式会社 | 光透過型情報担体の読取り装置 |
-
1972
- 1972-03-29 NL NLAANVRAGE7204204,A patent/NL171516C/xx not_active IP Right Cessation
-
1973
- 1973-03-05 ZA ZA731525A patent/ZA731525B/xx unknown
- 1973-03-21 CA CA166,657A patent/CA1022676A/en not_active Expired
- 1973-03-26 CH CH434573A patent/CH562492A5/xx not_active IP Right Cessation
- 1973-03-26 GB GB1445273A patent/GB1428731A/en not_active Expired
- 1973-03-26 JP JP3441973A patent/JPS5313122B2/ja not_active Expired
- 1973-03-26 DK DK165073A patent/DK133212C/da active
- 1973-03-26 SE SE7304203A patent/SE388957B/xx unknown
- 1973-03-26 NO NO1239/73A patent/NO141389C/no unknown
- 1973-03-26 IT IT22144/73A patent/IT983615B/it active
- 1973-03-26 AT AT263273A patent/AT328001B/de not_active IP Right Cessation
- 1973-03-27 ES ES413062A patent/ES413062A1/es not_active Expired
- 1973-03-27 BE BE129319A patent/BE797398A/xx unknown
- 1973-03-28 FR FR7311125A patent/FR2178106B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4910057A (de) | 1974-01-29 |
| AU5370873A (en) | 1974-09-26 |
| DE2313741A1 (de) | 1973-10-11 |
| ZA731525B (en) | 1974-10-30 |
| NL171516B (nl) | 1982-11-01 |
| ES413062A1 (es) | 1976-06-16 |
| DK133212C (da) | 1977-03-28 |
| NO141389B (no) | 1979-11-19 |
| SE388957B (sv) | 1976-10-18 |
| ATA263273A (de) | 1975-05-15 |
| NL7204204A (de) | 1973-10-02 |
| NO141389C (no) | 1980-02-27 |
| BE797398A (fr) | 1973-09-27 |
| DK133212B (da) | 1976-04-05 |
| NL171516C (nl) | 1983-04-05 |
| FR2178106A1 (de) | 1973-11-09 |
| AT328001B (de) | 1976-02-25 |
| CA1022676A (en) | 1977-12-13 |
| GB1428731A (en) | 1976-03-17 |
| CH562492A5 (de) | 1975-05-30 |
| FR2178106B1 (de) | 1978-09-08 |
| DE2313741B2 (de) | 1976-02-26 |
| JPS5313122B2 (de) | 1978-05-08 |
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