Optical transmission system
Abstract
An optical transmission system includes an optical path cross-connect device and an electrical cross-connect device connected by a plurality of working and standby input/output interface links. Optical signals in the working and standby systems are entered from the optical path cross-connect device into the electrical cross-connect device via the working and standby interface links, respectively, and switching of working and standby transmission lines is performed electrically by the electrical cross-connect device without momentary disconnect.

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Term ended
Projected expiry passed 19 March 2017, 9.5 years ago.
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1 sheet
Sheet 1
Every citation, both waysCites: the store holds 1 of 2
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| US5069521A | Cites | United States of America | XA | Search report | 1 |
| FUJIWARA M: "ADVANCED PHOTONIC SWITCHING TECHNOLOGY FOR COMMUNICATIONS", IEICE TRANSACTIONS ON COMMUNICATIONS,JP,INSTITUTE OF ELECTRONICS INFORMATION AND COMM. ENG. TOKYO, vol. E78-B, no. 5, 1 May 1995 (1995-05-01), pages 644 - 653, XP000513463, ISSN: 0916-8516 | Non-patent | – | – | Search report | – |
9 members in 5 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 9259296 | Japan | A | |
| 9259296 | Japan | – | |
| 18916096 | Japan | A | |
| 18916096 | Japan | – | |
| 18916096 | – | – | – |
| 9259296 | – | – | – |
| JP19960092592 | – | – | – |
| JP19960189160 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| EP0802697A2 | European Patent Office (EPO) | A2 | |
| JPH104418A | Japan | A | |
| CN1171683A | China | A | |
| US6072610A | United States of America | A | |
| EP0802697A3This record | European Patent Office (EPO) | A3 | |
| CN1118983C | China | C | |
| JP3639383B2 | Japan | B2 | |
| EP0802697B1 | European Patent Office (EPO) | B1 | |
| DE69740015D1 | Germany | D1 |
22 legal events, as 3 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 | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Notification of lapseLapsedST | ST | FR | |
| Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal feeWithdrawnR119 | R119 | DE | |
| 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 | |
| Fee paymentPLFP | PLFP | FR | |
| No opposition filed against granted patent, or epo opposition proceedings concluded without decisionGrantedR097 | R097 | DE | |
| 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 | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS | GRAS | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP | GRAP | 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
- 0802697
- Publication, DOCDB
- 0802697
- Publication, EPODOC
- EP0802697
- Application
- 97104700
- Application, DOCDB
- 97104700
- Application, EPODOC
- EP19970104700
Titles3
- German
- Optisches Übertragungssystem
- English
- Optical transmission system
- French
- Système de transmission optique
Classification
- CPC, 19
- H04J14/0295
- H04J14/0284
- H04J14/0286
- H04J14/0291
- H04J14/0294
- H04L2012/5627
- H04Q11/0062
- H04Q11/0066
- H04Q11/0478
- H04Q2011/0009
- H04Q2011/0011
- H04Q2011/0013
- H04Q2011/0015
- H04Q2011/0039
- H04Q2011/0043
- H04Q2011/0047
- H04Q2011/0052
- H04Q2011/0081
- H04Q2011/0083
- IPC, 10
- H04J14 00
- H04B10 03
- H04B10 27
- H04B10 291
- H04J14 02
- H04L12 70
- H04M3 22
- H04Q3 52
- H04Q11 00
- H04Q11 04
Designated states1
- Contracting states, 1
- France