EP1069757A3

Method and apparatus for inserting and extracting watermark into and from contents information

Abstract

In a method of inserting watermark information into digital data, a specified data value is determined in response to the watermark information. A data-value occurrence-frequency distribution of a predetermined number of samples of the digital data is changed into a modified occurrence-frequency distribution in which the specified data value occurs at a frequency extremely different from frequencies of occurrence of data values other than the specified data value.

EP1069757A3, drawing sheet 1 — Sheet 1 of 1

Term

Term ended

Projected expiry passed 27 June 2020, 6.2 years ago.

1 sheet

Sheet 1

Every citation, both waysCites: the store holds 5 of 6

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0845757A2	Cites	European Patent Office (EPO)	A	Search report	1-14
EP0859337A2	Cites	European Patent Office (EPO)	A	Search report	1-14
EP0993194A2	Cites	European Patent Office (EPO)	PX	Search report	1-14
US5930369A	Cites	United States of America	DAP	Search report	1-14
WO8908915A1	Cites	World Intellectual Property Organization (WIPO)	DA	Search report	1-14

5 members in 3 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
20272999	Japan	A	1999-07-16
20272999	Japan	–	1999-07-16
20272999	–	–	–
JP19990202729	–	–	–

Members5

Family members, oldest first
Document	Office	Kind
EP1069757A2	European Patent Office (EPO)	A2	2001-01-17
JP2001036722A	Japan	A	2001-02-09
EP1069757A3This record	European Patent Office (EPO)	A3	2001-04-18
US6636617B1	United States of America	B1	2003-10-21
JP3651319B2	Japan	B2	2005-05-25

13 legal events, as the office reported them to INPADOC

Over the term

Point at a mark for the event

Events

Legal events, newest first
	Event	Code
2014-08-27	Application refused18R	18R
2014-07-25	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION HAS BEEN REFUSEDSTAA	STAA
2012-04-18	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1
2005-07-20	First examination report despatched17Q	17Q
2002-01-09	Designation fees paidDE FR GBAKX	AKX
2001-07-18	Request for examination filed17P	17P
2001-04-18	Designated contracting statesAK	AK
2001-04-18	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX
2001-04-11	Information provided on ipc code assigned before grant7H 04N 7/24 ARIC1	RIC1
2001-03-02	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
2001-01-17	Designated contracting statesAK	AK
2001-01-17	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX
2000-12-01	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI