EP0175147A3
Digital conference circuit
Abstract
Die Erfindung betrifft eine digitale Konferenzschaltung mit Speicher und Addierer für ein Nachrichtenvermittlungssystem. Ein Addierer (A) ist zum Verbinden der Konferenzsignale über einen Teilsummen-Akkumulatorspeicher (M4) zurückgekoppelt Um Störgeräuschanteile der zu verbindenden Konierenzsignale zu verringern sind Nur-Lesespeicher (M3, M5), die entsprechende Umwandlungstabellen abgespeichert haben, dem Addierer (A) vor- und nachgeschaltet.
Term
Term ended
Projected expiry passed 15 August 2005, 21.1 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
Every citation, both ways
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0081799A1 | Cites | European Patent Office (EPO) | X | Search report |
| DE2906269A1 | Cites | Germany | A | Search report |
| US3699264A | Cites | United States of America | AD | Search report |
7 members in 5 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 641625 | United States of America | – | |
| 64162584 | United States of America | A | |
| 641625 | – | – | – |
| US19840641625 | – | – | – |
Members7
| Document | Office | Kind | |
|---|---|---|---|
| EP0175147A2 | European Patent Office (EPO) | A2 | |
| US4606021A | United States of America | A | |
| EP0175147A3This record | European Patent Office (EPO) | A3 | |
| CA1246725A | Canada | A | |
| CH669078A5 | Switzerland | A5 | |
| EP0175147B1 | European Patent Office (EPO) | B1 | |
| DE3584601D1 | Germany | D1 |
23 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | |
| No opposition filedOpposition26N | 26N | |
| Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP | PGFP | |
| No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE | PLBE | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA | STAA | |
| Corresponds to:REF | REF | |
| Gb: translation of ep patent filed (gb section 77(6)(a)/1977)GBT | GBT | |
| Designated contracting statesAK | AK | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | |
| It: translation for a ep patent filedITF | ITF | |
| It: translation for a ep patent filedITF | ITF | |
| First examination report despatched17Q | 17Q | |
| Request for examination filed17P | 17P | |
| Party data changed (applicant data changed or rights of an application transferred)RAP3 | RAP3 | |
| Designated contracting statesAK | AK | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | |
| Designated contracting statesAK | AK | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 0175147
- Publication, DOCDB
- 0175147
- Publication, EPODOC
- EP0175147
- Application
- 85110232
- Application, DOCDB
- 85110232
- Application, EPODOC
- EP19850110232
Titles3
- English
- DIGITAL CONFERENCE CIRCUIT
- French
- Circuit conférence numérique
- German
- Digitale Konferenzschaltung
Classification
- CPC, 2
- H04M3/569
- H04M3/561
- IPC, 1
- H04M3 56
Designated states1
- Contracting states, 1
- Italy