FR2178186B1 - - Google Patents
Info
- Publication number
- FR2178186B1 FR2178186B1 FR7311356A FR7311356A FR2178186B1 FR 2178186 B1 FR2178186 B1 FR 2178186B1 FR 7311356 A FR7311356 A FR 7311356A FR 7311356 A FR7311356 A FR 7311356A FR 2178186 B1 FR2178186 B1 FR 2178186B1
- Authority
- FR
- France
- 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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722215746 DE2215746A1 (en) | 1972-03-30 | 1972-03-30 | PROCEDURE FOR SEQUENTIAL RECORDING AND READING OF DATA ON A MEMORY TAPE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2178186A1 FR2178186A1 (en) | 1973-11-09 |
| FR2178186B1 true FR2178186B1 (en) | 1977-02-04 |
Family
ID=5840736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7311356A Expired FR2178186B1 (en) | 1972-03-30 | 1973-03-29 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4917253A (en) |
| BE (1) | BE797599A (en) |
| CA (1) | CA1025117A (en) |
| DE (1) | DE2215746A1 (en) |
| FR (1) | FR2178186B1 (en) |
| GB (1) | GB1421835A (en) |
| IT (1) | IT981647B (en) |
| LU (1) | LU67321A1 (en) |
| NL (1) | NL7302425A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006015608A1 (en) * | 2006-04-04 | 2007-10-18 | Tesa Scribos Gmbh | Method and apparatus for reading a computer generated hologram |
-
1972
- 1972-03-30 DE DE19722215746 patent/DE2215746A1/en active Pending
-
1973
- 1973-02-13 GB GB690473A patent/GB1421835A/en not_active Expired
- 1973-02-21 NL NL7302425A patent/NL7302425A/xx unknown
- 1973-03-27 IT IT2219073A patent/IT981647B/en active
- 1973-03-28 LU LU67321D patent/LU67321A1/xx unknown
- 1973-03-29 FR FR7311356A patent/FR2178186B1/fr not_active Expired
- 1973-03-29 CA CA167,453A patent/CA1025117A/en not_active Expired
- 1973-03-30 BE BE129502A patent/BE797599A/en unknown
- 1973-03-30 JP JP3660573A patent/JPS4917253A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CA1025117A (en) | 1978-01-24 |
| NL7302425A (en) | 1973-10-02 |
| IT981647B (en) | 1974-10-10 |
| BE797599A (en) | 1973-07-16 |
| DE2215746A1 (en) | 1973-10-11 |
| FR2178186A1 (en) | 1973-11-09 |
| LU67321A1 (en) | 1973-06-15 |
| GB1421835A (en) | 1976-01-21 |
| JPS4917253A (en) | 1974-02-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |