EP0583094A3
Isdn-based system for making a video call
Abstract
A single medium (audio) voice grade call (on 201) initiated by an ISDN video phone and directed to another ISDN video phone is converted into a multimedia (audio and video) ISDN call by a) maintaining the connection for the voice grade call (on 201) while the ISDN audio and video connection is being established over a bearer channel (230) of the ISDN subscriber loop different from the bearer channel (201) being used by the voice grade connection, b) switching the audio signals (on 201) from the voice grade call to the ISDN audio and video connection (on 230), once the ISDN audio and video connection is established, and c) disconnecting the initial voice grade call (on 201).
Term
Term ended
Projected expiry passed 22 July 2013, 13.2 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| EP0528732A1 | Cites | European Patent Office (EPO) | PX | Search report | 1,2,4,9,10,12,17 |
| EP0532972A1 | Cites | European Patent Office (EPO) | PX | Search report | 1-4,9-12,17 |
| US5101427A | Cites | United States of America | A | Search report | 6-8,14-17 |
| SCHROCK W ET AL: "FERNSEHEN STATT FERNSPRECHEN", FUNKSCHAU, vol. 60, no. 23, 4 November 1988 (1988-11-04), pages 58 - 61, XP000051290 | Non-patent | – | – | Search report | – |
| EUDE G ET AL: "THE NUMERIS VIDEOPHONE", COMMUTATION ET TRANSMISSION, vol. 13, no. 3, 1 January 1991 (1991-01-01), pages 5 - 14, XP000262693 | Non-patent | – | – | Search report | – |
| HINZ R: "DIE SYSTEMSTEUERUNG FUER EIN ISDN-BILDTELEFON", NTZ NACHRICHTENTECHNISCHE ZEITSCHRIFT, vol. 45, no. 6, 1 June 1992 (1992-06-01), pages 428 - 429, 432 - 434, 439, XP000304848 | Non-patent | – | – | Search report | – |
10 members in 7 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 919000 | United States of America | – | |
| 91900092 | United States of America | A | |
| 91900092 | United States of America | A | |
| US19920919000 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| EP0583094A2 | European Patent Office (EPO) | A2 | |
| KR940006132A | Republic of Korea | A | |
| MX9304472A | Mexico | A | |
| TW224556B | Taiwan Province of China | B | |
| JPH06209471A | Japan | A | |
| US5371534A | United States of America | A | |
| EP0583094A3This record | European Patent Office (EPO) | A3 | |
| KR0150651B1 | Republic of Korea | B1 | |
| EP0583094B1 | European Patent Office (EPO) | B1 | |
| DE69330700D1 | Germany | D1 |
23 legal events, as 2 offices reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | Office | |
|---|---|---|---|
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | EP | |
| No opposition filedOpposition26N | 26N | EP | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | 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 | |
| European patent in force as of 2002-01-01IF02 | IF02 | GB | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| 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 | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | EP | |
| Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH | GRAH | EP | |
| Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG | GRAG | 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 | |
| Party data changed (applicant data changed or rights of an application transferred)RAP3 | RAP3 | 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
- 0583094
- Publication, DOCDB
- 0583094
- Publication, EPODOC
- EP0583094
- Application
- 93305778
- Application, DOCDB
- 93305778
- Application, EPODOC
- EP19930305778
Titles3
- German
- ISDN-basiertes Bildfernsprechsystem
- English
- ISDN-based system for making a video call
- French
- Système de visiophonie basé sur RNIS
Classification
- CPC, 20
- H04L65/1069
- H04Q11/04
- H04Q11/0471
- H04Q2213/13034
- H04Q2213/13096
- H04Q2213/13176
- H04Q2213/13201
- H04Q2213/13204
- H04Q2213/13208
- H04Q2213/13209
- H04Q2213/13292
- H04Q2213/13332
- H04Q2213/13337
- H04Q2213/1336
- H04Q2213/204
- H04Q2213/337
- H04Q2213/392
- H04L65/1083
- H04L65/403
- H04L65/1089
- IPC, 3
- H04M11 00
- H04N7 14
- H04Q11 04
Designated states1
- Contracting states, 1
- Italy