EP0444592A3
Multidirection multiplex communication system
Abstract
A TDM/TDMA (Time Division Multiplex/Time Division Multiple Access) multidirection multiplex communication system of the type using a demand assignment protocol. The system has a multiframe arrangement in which each unit frame is constituted by a frame synchronization signal, a connection control signal for setting up radio channels, N conversation channels, and a single additional bit transmission channel shared by the N conversation channels. When N unit frames are combined in a multiframe format by a frame synchronization signal, N additional bit transmission channels are provided in total.
Term
Term ended
Projected expiry passed 26 February 2011, 15.6 years ago.
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1 sheet
Sheet 1
Every citation, both waysCites: the store holds 2 of 3
| Document | Relation | Office | Category | Cited during |
|---|---|---|---|---|
| EP0269120A2 | Cites | European Patent Office (EPO) | A | Search report |
| EP0322029A1 | Cites | European Patent Office (EPO) | A | Search report |
| PATENT ABSTRACTS OF JAPAN vol. 006, no. 132 (E-119)17 July 1982 & JP-A-57 058 427 ( NEC CORP. ) 8 April 1982 | Non-patent | – | – | Search report |
10 members in 5 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 4606690 | Japan | – | |
| 4606690 | Japan | A | |
| 4606690 | Japan | A | |
| JP19900046066 | – | – | – |
Members10
| Document | Office | Kind | |
|---|---|---|---|
| CA2037140A1 | Canada | A1 | |
| EP0444592A2 | European Patent Office (EPO) | A2 | |
| JPH03248638A | Japan | A | |
| EP0444592A3This record | European Patent Office (EPO) | A3 | |
| US5170395A | United States of America | A | |
| CA2037140C | Canada | C | |
| EP0444592B1 | European Patent Office (EPO) | B1 | |
| DE69113650D1 | Germany | D1 | |
| DE69113650T2 | Germany | T2 | |
| JP2540968B2 | Japan | B2 |
25 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 | |
| Notification of lapseLapsedST | ST | FR | |
| Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25 | PG25 | EP | |
| Gb: european patent ceased through non-payment of renewal feeCeasedGBPC | GBPC | 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 | |
| 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 | |
| It: translation for a ep patent filedITF | ITF | EP | |
| It: translation for a ep patent filedITF | ITF | EP | |
| Corresponds to:REF | REF | EP | |
| Designated contracting statesAK | AK | EP | |
| (expected) grantORIGINAL CODE: 0009210GRAA | GRAA | EP | |
| First examination report despatched17Q | 17Q | EP | |
| Designated contracting statesAK | AK | EP | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | EP | |
| Request for examination filed17P | 17P | 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
- 0444592
- Publication, DOCDB
- 0444592
- Publication, EPODOC
- EP0444592
- Application
- 102797
- Application, DOCDB
- 91102797
- Application, EPODOC
- EP19910102797
Titles3
- German
- Mehrrichtung-Multiplexübertragungssystem
- English
- Multidirection multiplex communication system
- French
- Système de communication en multiplex pluridirectionnel
Classification
- CPC, 3
- H04W88/08
- H04B7/2643
- H04W56/001
- IPC, 4
- H04J3 00
- H04B7 212
- H04B7 26
- H04W88 08
Designated states1
- Contracting states, 1
- Italy