EP0809209A3

Image enhancing method using lowpass filtering and histogram equalization and a device therefor

Abstract

This record has no abstract on file.

Term

Term ended

Projected expiry passed 14 May 2017, 9.4 years ago.

Every citation, both waysCites: the store holds 3 of 4

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
US4825297A	Cites	United States of America	A	Search report	1-7
US5317427A	Cites	United States of America	Y	Search report	1-7
US5550888A	Cites	United States of America	PA	Search report	1-7
ZHU YU-CHENG ET AL: "A HUMAN VISUAL MODEL BASED IMAGE HISTOGRAM MODIFICATION TECHNIQUE", PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON SYSTEMS, MAN, AND CYBERNETICS, BEIJING AND SHENYANG, AUG. 8 - 12, 1988, vol. VOL. 1, no. -, 8 August 1988 (1988-08-08), INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, pages 151 - 154, XP000091997	Non-patent	–	–	Search report	–
LESZCZYNSKI K W ET AL: "DIGITAL CONTRAST ENHANCEMENT FOR ONLINE PORTAL IMAGING", MEDICAL AND BIOLOGICAL ENGINEERING AND COMPUTING, vol. 27, no. 5, September 1989 (1989-09-01), pages 507 - 512, XP000046396	Non-patent	–	–	Search report	–

8 members in 5 offices

This recordMember, by publication datePriority claim

Priority claims3

Priority claims
Document	Office	Kind	Date
19960017209	Republic of Korea	A	1996-05-21
19960017209	Republic of Korea	A	1996-05-21
KR19960017209	–	–	–

Members8

Family members, oldest first
Document	Office	Kind
EP0809209A2	European Patent Office (EPO)	A2	1997-11-26
KR970078437A	Republic of Korea	A	1997-12-12
CN1172312A	China	A	1998-02-04
JPH1051661A	Japan	A	1998-02-20
EP0809209A3This record	European Patent Office (EPO)	A3	1998-07-29
KR0176601B1	Republic of Korea	B1	1999-05-01
US5995656A	United States of America	A	1999-11-30
CN1105992C	China	C	2003-04-16

8 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
2002-08-07	Application deemed to be withdrawnWithdrawn18D	18D
2002-06-21	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWNSTAA	STAA
2001-02-07	First examination report despatched17Q	17Q
1998-07-29	Designated contracting statesAK	AK
1998-06-12	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL
1997-11-26	Request for examination filed17P	17P
1997-11-26	Designated contracting statesAK	AK
1997-10-10	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI