EP0469868A3

Binary image processing for decoding self-clocking glyph shape codes

Abstract

Binary image processing techniques are provided for decoding bitmap image space representations of self-clocking glyph shape codes and for tracking the number and locations of the ambiguities (sometimes referred to herein as "errors") that are encountered during the decoding of such codes. A substantial portion of the image processing that is performed in the illustrated embodiment of this invention is carried out through the use of morphological filtering operations because of the parallelism that is offered by such operations.

EP0469868A3, drawing sheet 1 — Sheet 1 of 1

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Projected expiry passed 30 July 2011, 15.2 years ago.

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Citations
Document	Relation	Office	Category	Cited during
EP0350933A2	Cites	European Patent Office (EPO)	A	Search report
PROCEEDINGS SPIE CONFERENCE IMAGE ALGEBRA & MORPHOLOGICAL IMAGE PROCESSING 10-12 July 1990, SAN DIEGO, US, Pages 116 - 128, D.BLOOMBERG & P.MARAGOS: 'Generalized Hit-Miss Operations'	Non-patent	–	–	Search report

10 members in 5 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
560659	United States of America	–	1990-07-31
56065990	United States of America	A	1990-07-31
56065990	United States of America	A	1990-07-31
US19900560659	–	–	–

Members10

Family members, oldest first
Document	Office	Kind
CA2044463A1	Canada	A1	1992-02-01
EP0469868A2	European Patent Office (EPO)	A2	1992-02-05
JPH04233677A	Japan	A	1992-08-21
US5168147A	United States of America	A	1992-12-01
EP0469868A3This record	European Patent Office (EPO)	A3	1993-07-07
JPH0778818B2	Japan	B2	1995-08-23
EP0469868B1	European Patent Office (EPO)	B1	1998-03-25
CA2044463C	Canada	C	1998-04-14
DE69129136D1	Germany	D1	1998-04-30
DE69129136T2	Germany	T2	1998-10-08

26 legal events, as 3 offices reported them to INPADOC

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	Event	Code	Office
2013-06-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2011-11-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2011-08-24	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2011-07-31	Expiry of rightR071	R071	DE
2011-07-30	Expiry of rightR071	R071	DE
2010-12-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2010-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2010-11-30	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2002-01-01	European patent in force as of 2002-01-01IF02	IF02	GB
1999-03-17	No opposition filedOpposition26N	26N	EP
1999-01-29	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
1999-01-29	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
1998-07-10	Fr: translation filedET	ET	EP
1998-04-30	Corresponds to:REF	REF	EP
1998-03-25	Designated contracting statesAK	AK	EP
1998-02-06	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
1998-01-22	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
1997-09-23	Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG	GRAG	EP
1997-09-23	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
1997-06-21	Despatch of communication of intention to grantORIGINAL CODE: EPIDOS AGRAGRAG	GRAG	EP
1996-02-21	First examination report despatched17Q	17Q	EP
1994-03-02	Request for examination filed17P	17P	EP
1993-07-07	Designated contracting statesAK	AK	EP
1993-05-14	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1992-02-05	Designated contracting statesAK	AK	EP
1991-12-18	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Binary image processing for decoding self-clocking glyph shape codes

Abstract

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Priority claims4

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