EP0981900A2
Watermark detection
Abstract
A method is disclosed for embedding auxiliary data in a signal. The data is encoded into the relative position or phase of one or more basic watermark patterns. This allows multi-bit data to be embedded by using only one or a few distinct watermark patterns.
Term
Term ended
Projected expiry passed 18 February 2019, 7.6 years ago.
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3 sheets
Sheet 1 Sheet 2 Sheet 3
Every citation, both ways
| Document | Relation | Office | Cited during |
|---|---|---|---|
| CN100380960C | Cited by | China | Search report |
| KALKER T. ET AL: "ON THE RELIABILITY OF DETECTING ELECTRONIC WATERMARKS IN DIGITAL IMAGES", SIGNAL PROCESSING : THEORIES AND APPLICATIONS, PROCEEDINGS OF EUSIPCO, 1998, pages 13 - 16, XP001025734 | Non-patent | – | Examiner |
64 members in 14 offices
Priority claims3
| Document | Office | Kind | Date |
|---|---|---|---|
| 98200656 | European Patent Office (EPO) | – | |
| 98200656 | European Patent Office (EPO) | A | |
| 9900293 | International Bureau of the World Intellectual Property Organization (WIPO) | W |
Members64
| Document | Office | Kind | |
|---|---|---|---|
| WO9945704A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO9945705A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO9945706A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO9945707A2 | World Intellectual Property Organization (WIPO) | A2 | |
| AU2437499A | Australia | A | |
| WO9945704A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO9945705A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO9945706A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO9945707A3 | World Intellectual Property Organization (WIPO) | A3 | |
| EP0981900A2This record | European Patent Office (EPO) | A2 | |
| EP0981901A2 | European Patent Office (EPO) | A2 | |
| EP0981902A2 | European Patent Office (EPO) | A2 | |
| EP0981903A2 | European Patent Office (EPO) | A2 | |
| ID23884A | Indonesia | A | |
| PL336841A1 | Poland | A1 | |
| PL336845A1 | Poland | A1 | |
| CN1266586A | China | A | |
| CN1266587A | China | A | |
| CN1269098A | China | A | |
| CN1269099A | China | A | |
| KR20010012213A | Republic of Korea | A | |
| KR20010012214A | Republic of Korea | A | |
| KR20010012245A | Republic of Korea | A | |
| KR20010012250A | Republic of Korea | A | |
| JP2001525151A | Japan | A | |
| JP2001525152A | Japan | A | |
| JP2001525153A | Japan | A | |
| JP2002503431A | Japan | A | |
| US6477431B1 | United States of America | B1 | |
| US6505223B1 | United States of America | B1 | |
| US2003086587A1 | United States of America | A1 | |
| RU2222114C2 | Russian Federation | C2 | |
| CN1153456C | China | C | |
| CN1156155C | China | C | |
| BR9904848A | Brazil | A | |
| CN1166187C | China | C | |
| US6865589B2 | United States of America | B2 | |
| RU2249308C2 | Russian Federation | C2 | |
| US2005089192A1 | United States of America | A1 | |
| CN1227899C | China | C | |
| US6971011B1 | United States of America | B1 | |
| KR100611521B1 | Republic of Korea | B1 | |
| KR100614425B1 | Republic of Korea | B1 | |
| KR100648845B1 | Republic of Korea | B1 | |
| US7146394B2 | United States of America | B2 | |
| US7191334B1 | United States of America | B1 | |
| EP0981903B1 | European Patent Office (EPO) | B1 | |
| AT381209T | Austria | T | |
| ATE381209T1 | Austria | T1 | |
| DE69937712D1 | Germany | D1 | |
| EP0981901B1 | European Patent Office (EPO) | B1 | |
| AT388582T | Austria | T | |
| ATE388582T1 | Austria | T1 | |
| DE69938278D1 | Germany | D1 | |
| ES2297919T3 | Spain | T3 | |
| DE69937712T2 | Germany | T2 | |
| EP0981902B1 | European Patent Office (EPO) | B1 | |
| AT422282T | Austria | T | |
| ATE422282T1 | Austria | T1 | |
| DE69938278T2 | Germany | T2 | |
| DE69940375D1 | Germany | D1 | |
| JP4364948B2 | Japan | B2 | |
| JP4364949B2 | Japan | B2 | |
| JP4428728B2 | Japan | B2 |
5 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 | |
| Request for examination filed17P | 17P | |
| 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
- 0981900
- Application
- 999027543
Titles3
- German
- WASSERZEICHENERKENNUNG
- English
- WATERMARK DETECTION
- French
- DETECTION DES FILIGRANES
Classification
- CPC, 5
- G06T1/0071
- H04N5/913
- H04H20/31
- H04H2201/50
- H04N2005/91335
- IPC, 17
- H04N7 08
- G06K9 00
- G06K9 36
- G06K9 46
- G06T1 00
- G06T7 00
- G09C5 00
- H04H1 00
- H04H20 31
- H04N1 32
- H04N1 387
- H04N5 913
- H04N5 92
- H04N7 081
- H04N19 00
- H04N19 44
- H04N19 467
Designated states5
- Contracting states, 5
- Germany
- Spain
- France
- United Kingdom
- Italy