EP1580748A3
Information recording method and information recording apparatus
Abstract
An optical disc drive produces read gate signals for controlling the address and data read timing, and write gate signals for controlling the timing of data writing. During the disc speed is stable, the read gate signals and write gate signals are formed using the clock signal generated by an internal oscillator. However, when the disc speed becomes unstable, the read gates and write gates are formed using the clock signal generated by the signal reproduced from the disc.

Term
Term ended
Projected expiry passed 26 November 2018, 7.8 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| US4815063A | Cites | United States of America | A | Search report | 1,2 |
| US5315571A | Cites | United States of America | X | Search report | 1,2 |
| US5642342A | Cites | United States of America | A | Search report | 1,2 |
15 members in 5 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 32743597 | Japan | – | |
| 32743597 | Japan | A | |
| 98122403 | European Patent Office (EPO) | A |
Members15
| Document | Office | Kind | |
|---|---|---|---|
| EP0920007A2 | European Patent Office (EPO) | A2 | |
| CN1219731A | China | A | |
| JPH11162108A | Japan | A | |
| KR19990045673A | Republic of Korea | A | |
| EP0920007A3 | European Patent Office (EPO) | A3 | |
| US6181655B1 | United States of America | B1 | |
| KR100280688B1 | Republic of Korea | B1 | |
| EP1168330A2 | European Patent Office (EPO) | A2 | |
| EP1168330A3 | European Patent Office (EPO) | A3 | |
| CN1129119C | China | C | |
| CN1495771A | China | A | |
| EP1580748A2 | European Patent Office (EPO) | A2 | |
| EP1580748A3This record | European Patent Office (EPO) | A3 | |
| CN1320546C | China | C | |
| JP4078696B2 | Japan | B2 |
9 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Designated country de not longer valid8566 | 8566 | DE | |
| Application deemed to be withdrawnWithdrawn18D | 18D | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA | STAA | EP | |
| Designation fees paidAKX | AKX | EP | |
| Designated contracting statesAK | AK | EP | |
| Divisional application: reference to earlier applicationAC | AC | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI | EP |
Numbers
- Publication
- 1580748
- Application
- 50121854
Titles3
- German
- Optisches Plattenlaufwerk, Zeitsignalgenerator und Informationsaufzeichnungs- und wiedergabeverfahren
- English
- Information recording method and information recording apparatus
- French
- Unité de disque optique, générateur de signaux d'horloge et méthode d'enregistrement et de reproduction d'informations
Classification
- CPC, 8
- G11B20/14
- G11B20/1403
- G11B20/18
- G11B27/3027
- G11B27/36
- G11B2220/20
- G11B19/02
- G11B2220/2537
- IPC, 7
- G11B20 10
- G11B7 00
- G11B7 005
- G11B20 14
- G11B20 18
- G11B27 30
- G11B27 36
Designated states3
- Contracting states, 3
- Germany
- France
- United Kingdom