EP1564682A3
A system and method for visual echo cancellation in a projector-camera-whiteboard system
Abstract
A system and method for transmitting a clear image of a whiteboard work surface for remote collaboration. The image is separated into two portions; the projected image of the work surface, and the writing physically added to the whiteboard by participants. This separation allows several benefits. The bandwidth requirements are much lower than video teleconferencing, and the benefits of whiteboard sharing are improved. The visual echo created on a physical whiteboard can be canceled.
Term
Term ended
Projected expiry passed 31 January 2025, 1.6 years ago.
- Priority
- Filed
- Published
- Projected expiry
- Today
1 sheet
Sheet 1
Every citation, both ways
| Document | Relation | Office | Category | Cited during | Relevant claims |
|---|---|---|---|---|---|
| WO0021065A1 | Cites | World Intellectual Property Organization (WIPO) | Y | Search report | 6,7,10-17,20,25 |
| WO0243390A2 | Cites | World Intellectual Property Organization (WIPO) | A | Search report | 1-28 |
| US2002130979A1 | Cites | United States of America | XYI | Search report | 1,3,4 |
| US5239373A | Cites | United States of America | Y | Search report | 5,21-24 |
9 members in 5 offices
Priority claims4
| Document | Office | Kind | Date |
|---|---|---|---|
| 780209 | United States of America | – | |
| 78020904 | United States of America | A | |
| 780209 | – | – | – |
| US20040780209 | – | – | – |
Members9
| Document | Office | Kind | |
|---|---|---|---|
| EP1564682A2 | European Patent Office (EPO) | A2 | |
| US2005180631A1 | United States of America | A1 | |
| JP2005253067A | Japan | A | |
| CN1680867A | China | A | |
| KR20060041840A | Republic of Korea | A | |
| US7496229B2 | United States of America | B2 | |
| CN100527825C | China | C | |
| KR101040865B1 | Republic of Korea | B1 | |
| EP1564682A3This record | European Patent Office (EPO) | A3 |
21 legal events, as the office reported them to INPADOC
Over the term
Point at a mark for the eventEvents
| Event | Code | |
|---|---|---|
| Application deemed to be withdrawnWithdrawn18D | 18D | |
| Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA | STAA | |
| First examination report despatched17Q | 17Q | |
| Designation fees paidAKX | AKX | |
| Extension fees paidAXX | AXX | |
| Extension fees paidAXX | AXX | |
| Extension fees paidAXX | AXX | |
| Extension fees paidAXX | AXX | |
| Extension fees paidAXX | AXX | |
| Extension fees paidAXX | AXX | |
| Request for examination filed17P | 17P | |
| Party data changed (applicant data changed or rights of an application transferred)RAP1 | RAP1 | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | |
| Information provided on ipc code assigned before grantRIC1 | RIC1 | |
| Search report despatchedORIGINAL CODE: 0009013PUAL | PUAL | |
| Designated contracting statesAK | AK | |
| Request for extension of the european patentAX | AX | |
| Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI | PUAI |
Numbers
- Publication
- 1564682
- Publication, DOCDB
- 1564682
- Publication, EPODOC
- EP1564682
- Application
- 51006294
- Application, DOCDB
- 05100629
- Application, EPODOC
- EP20050100629
Titles3
- German
- Anordnung und Verfahren zur Löschung von visuellen Echos in einer Projektor-Kamera-Weisswandtafel-Anordnung
- English
- A system and method for visual echo cancellation in a projector-camera-whiteboard system
- French
- Système et procédé d'annihilation d'échos visuels dans un système projecteur-caméra-tableau blanc
Classification
- CPC, 7
- H04N7/15
- G06T5/50
- G06T7/12
- G06T2207/10016
- G06T2207/20036
- G06T2207/20061
- H04L12/1827
- IPC, 9
- G06F15 00
- G06T5 00
- G03B17 54
- G06K9 00
- G06T5 50
- G06T7 00
- G09G5 00
- H04N1 60
- H04N7 15
Designated states36
- Contracting states, 30
- Austria
- Belgium
- Bulgaria
- Switzerland
- Cyprus
- Czechia
- Germany
- Denmark
- Estonia
- Spain
- Finland
- France
- United Kingdom
- Greece
- Hungary
- Ireland
- Iceland
- Italy
- Liechtenstein
- Lithuania
- Luxembourg
- Monaco
- Netherlands (Kingdom of the)
- Poland
and 6 moreShow fewer
- Portugal
- Romania
- Sweden
- Slovenia
- Slovakia
- Türkiye
- Extension states, 6
- Albania
- Bosnia and Herzegovina
- Croatia
- Latvia
- North Macedonia
- Yugoslavia, later Serbia and Montenegro (until 2006)