JPS4917046B1 - - Google Patents
Info
- Publication number
- JPS4917046B1 JPS4917046B1 JP45100103A JP10010370A JPS4917046B1 JP S4917046 B1 JPS4917046 B1 JP S4917046B1 JP 45100103 A JP45100103 A JP 45100103A JP 10010370 A JP10010370 A JP 10010370A JP S4917046 B1 JPS4917046 B1 JP S4917046B1
- Authority
- JP
- Japan
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Recording Or Reproduction (AREA)
- Optical Head (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691958858 DE1958858C3 (de) | 1969-11-15 | Einrichtung zur Lichtabtastung eines Trägers mit Rillen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4917046B1 true JPS4917046B1 (US08177716-20120515-C00003.png) | 1974-04-26 |
Family
ID=5751873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP45100103A Pending JPS4917046B1 (US08177716-20120515-C00003.png) | 1969-11-15 | 1970-11-13 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3764759A (US08177716-20120515-C00003.png) |
| JP (1) | JPS4917046B1 (US08177716-20120515-C00003.png) |
| FR (1) | FR2069448A5 (US08177716-20120515-C00003.png) |
| GB (1) | GB1285108A (US08177716-20120515-C00003.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125245U (US08177716-20120515-C00003.png) * | 1981-01-30 | 1982-08-04 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010317A (en) * | 1972-03-29 | 1977-03-01 | U.S. Philips Corporation | Apparatus for reading a record carrier in which information, for example video and/or audio information, is recorded in at least one track |
| FR2197495A5 (US08177716-20120515-C00003.png) * | 1972-08-25 | 1974-03-22 | Thomson Csf | |
| NL161284C (nl) * | 1972-09-02 | 1980-01-15 | Philips Nv | Weergavestelsel voor een optisch uitleesbare informatie- structuur, alsmede registratiedrager voor gebruik daarin. |
| US3919562A (en) * | 1974-05-20 | 1975-11-11 | Zenith Radio Corp | Slit detector for optical detector system |
| US4534021A (en) * | 1981-12-10 | 1985-08-06 | Discovision Associates | Angularly multiplexed optical recording medium |
| US5161134A (en) * | 1989-06-29 | 1992-11-03 | Digital Equipment Corporation | Method for increasing linear bit density in magneto-optical storage media |
Family Cites Families (4)
| 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 |
| US1956626A (en) * | 1931-03-14 | 1934-05-01 | Percy A Robbins | Translucent sound record |
| US2497142A (en) * | 1941-12-18 | 1950-02-14 | Shepherd Judson O'd | Sound recorder and reproducer |
-
1970
- 1970-11-13 GB GB54233/70A patent/GB1285108A/en not_active Expired
- 1970-11-13 JP JP45100103A patent/JPS4917046B1/ja active Pending
- 1970-11-13 FR FR7040862A patent/FR2069448A5/fr not_active Expired
- 1970-11-16 US US00089692A patent/US3764759A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57125245U (US08177716-20120515-C00003.png) * | 1981-01-30 | 1982-08-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1285108A (en) | 1972-08-09 |
| DE1958858B2 (de) | 1976-03-04 |
| FR2069448A5 (US08177716-20120515-C00003.png) | 1971-09-03 |
| US3764759A (en) | 1973-10-09 |
| DE1958858A1 (de) | 1971-06-03 |
