EP0347858A3
Recording medium and recording and reproducing apparatus employing the recording medium
Abstract
According to the invention, control data of a predetermined number of bits are pre-recorded on the recording track (3, 23) of a recording medium (1, 21) in the form of burst-like changes of the recording track's width to provide for recording control and reproducing control based on the control data.
Term
Term ended
Projected expiry passed 20 June 2009, 17.3 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0166199A1 | Cites | European Patent Office (EPO) | X | Search report |
| EP0265695A2 | Cites | European Patent Office (EPO) | A | Search report |
| EP0265984A1 | Cites | European Patent Office (EPO) | Y | Search report |
| EP0299573A1 | Cites | European Patent Office (EPO) | XP | Search report |
| EP0325330A1 | Cites | European Patent Office (EPO) | E | Search report |
| GB2069219A | Cites | United Kingdom | Y | Search report |
| DE3620331A1 | Cites | Germany | X | Search report |
| US3962720A | Cites | United States of America | Y | Search report |
| US4691310A | Cites | United States of America | A | Search report |
12 priority claims, no other members on record
Priority claims12
| Document | Office | Kind | Date |
|---|---|---|---|
| 14995888 | Japan | – | |
| 14995888 | Japan | A | |
| 17222688 | Japan | – | |
| 17222688 | Japan | A | |
| 4178489 | Japan | – | |
| 4178489 | Japan | A | |
| 14995888 | – | – | – |
| 17222688 | – | – | – |
| 4178489 | – | – | – |
| JP19880149958 | – | – | – |
| JP19880172226 | – | – | – |
| JP19890041784 | – | – | – |
22 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Nl: ceased due to reaching the maximum lifetime of a patentCeasedNLV7 | NLV7 | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Patent expired after termination of 20 yearsExpiredPE20 | PE20 | GB | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | EP | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| No opposition filedOpposition26N | 26N | EP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | EP | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | EP | |
| Fr: translation filedET | ET | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Request for examination filed17P | 17P | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Designated contracting statesAK | AK | 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
- 0347858
- Publication, DOCDB
- 0347858
- Publication, EPODOC
- EP0347858
- Application
- 89111238
- Application, DOCDB
- 89111238
- Application, EPODOC
- EP19890111238
Titles3
- English
- Optical disc and recording and reproducing apparatus employing the optical disc
- German
- Optische Platte und Aufzeichnungs- und Wiedergabegerät zur Verwendung dieser optischen Platte
- French
- Disque optique et appareil d'enregistrement et de reproduction pouvant utiliser ce disque optique
Classification
- CPC, 13
- G11B27/3063
- G11B7/24082
- G11B11/105
- G11B11/10565
- G11B11/10578
- G11B11/10595
- G11B19/02
- G11B23/36
- G11B27/24
- G11B2220/213
- G11B2220/216
- G11B2220/218
- G11B2220/2545
- IPC, 9
- G11B7 004
- G11B7 007
- G11B7 013
- G11B11 105
- G11B19 02
- G11B23 36
- G11B27 19
- G11B27 24
- G11B27 30
Designated states4
- Contracting states, 4
- Germany
- France
- United Kingdom
- Netherlands (Kingdom of the)