JPS57133530A - Optical scanner for data medium - Google Patents
Optical scanner for data mediumInfo
- Publication number
- JPS57133530A JPS57133530A JP56215920A JP21592081A JPS57133530A JP S57133530 A JPS57133530 A JP S57133530A JP 56215920 A JP56215920 A JP 56215920A JP 21592081 A JP21592081 A JP 21592081A JP S57133530 A JPS57133530 A JP S57133530A
- Authority
- JP
- Japan
- Prior art keywords
- optical scanner
- data medium
- medium
- data
- scanner
- 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.)
- Pending
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
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
-
- 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
- G11B7/123—Integrated head arrangements, e.g. with source and detectors mounted on the same substrate
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8027689A FR2497377B1 (fr) | 1980-12-29 | 1980-12-29 | Dispositif d'exploration optique d'un support d'information |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57133530A true JPS57133530A (en) | 1982-08-18 |
Family
ID=9249570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56215920A Pending JPS57133530A (en) | 1980-12-29 | 1981-12-26 | Optical scanner for data medium |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0055645A3 (ja) |
JP (1) | JPS57133530A (ja) |
CA (1) | CA1183604A (ja) |
FR (1) | FR2497377B1 (ja) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7402768A (nl) * | 1974-02-28 | 1975-09-01 | Philips Nv | Inrichting voor het schrijven en/of weergeven van informatie in respektievelijk van een draaiende schijfvormige registratiedrager. |
NL164689C (nl) * | 1975-03-10 | 1981-01-15 | Philips Nv | Optische focusseerinrichting voor het focusseren van een stralingsbundel. |
JPS5953612B2 (ja) * | 1975-11-19 | 1984-12-26 | カブシキガイシヤ フジテレビジヨン | コウデンシキサイセイホウホウ |
NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
NL7703232A (nl) * | 1977-03-25 | 1978-09-27 | Philips Nv | Optische aftastinrichting. |
FR2443734A1 (fr) * | 1978-12-08 | 1980-07-04 | Thomson Csf | Dispositif d'acces a une piste portee par un support enregistrable ou lisible optiquement et systeme optique comportant un tel dispositif |
FR2474221A1 (fr) * | 1980-01-23 | 1981-07-24 | Thomson Csf | Dispositif optique d'enregistrement-lecture de supports d'information et systeme de memoire optique comportant un tel systeme |
-
1980
- 1980-12-29 FR FR8027689A patent/FR2497377B1/fr not_active Expired
-
1981
- 1981-12-04 EP EP81401935A patent/EP0055645A3/fr not_active Ceased
- 1981-12-21 CA CA000392775A patent/CA1183604A/en not_active Expired
- 1981-12-26 JP JP56215920A patent/JPS57133530A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
FR2497377B1 (fr) | 1985-06-28 |
EP0055645A2 (fr) | 1982-07-07 |
CA1183604A (en) | 1985-03-05 |
EP0055645A3 (en) | 1982-08-11 |
FR2497377A1 (fr) | 1982-07-02 |
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