JPH0416684U - - Google Patents
Info
- Publication number
- JPH0416684U JPH0416684U JP1990029219U JP2921990U JPH0416684U JP H0416684 U JPH0416684 U JP H0416684U JP 1990029219 U JP1990029219 U JP 1990029219U JP 2921990 U JP2921990 U JP 2921990U JP H0416684 U JPH0416684 U JP H0416684U
- Authority
- JP
- Japan
- Prior art keywords
- optical disk
- diffraction grating
- recording area
- pattern
- signal
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029219U JPH0621108Y2 (ja) | 1990-03-22 | 1990-03-22 | 光ディスクおよび読取装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029219U JPH0621108Y2 (ja) | 1990-03-22 | 1990-03-22 | 光ディスクおよび読取装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0416684U true JPH0416684U (US07179912-20070220-C00144.png) | 1992-02-12 |
| JPH0621108Y2 JPH0621108Y2 (ja) | 1994-06-01 |
Family
ID=31531991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990029219U Expired - Fee Related JPH0621108Y2 (ja) | 1990-03-22 | 1990-03-22 | 光ディスクおよび読取装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621108Y2 (US07179912-20070220-C00144.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006113A1 (en) * | 1992-08-28 | 1994-03-17 | Toppan Printing Co., Ltd. | Optical information recording medium and method of reading the same information |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165935A (en) * | 1980-04-21 | 1981-12-19 | Rca Corp | Method and device for reading mark on information record |
| JPS57103109A (en) * | 1980-12-19 | 1982-06-26 | Pioneer Video Corp | Centering device for recording track of recording disk |
| JPS63161427U (US07179912-20070220-C00144.png) * | 1987-04-10 | 1988-10-21 |
-
1990
- 1990-03-22 JP JP1990029219U patent/JPH0621108Y2/ja not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56165935A (en) * | 1980-04-21 | 1981-12-19 | Rca Corp | Method and device for reading mark on information record |
| JPS57103109A (en) * | 1980-12-19 | 1982-06-26 | Pioneer Video Corp | Centering device for recording track of recording disk |
| JPS63161427U (US07179912-20070220-C00144.png) * | 1987-04-10 | 1988-10-21 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994006113A1 (en) * | 1992-08-28 | 1994-03-17 | Toppan Printing Co., Ltd. | Optical information recording medium and method of reading the same information |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621108Y2 (ja) | 1994-06-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |