EP1107232A3

Joint stereo coding of audio signals

Abstract

In a communications system, parametric coding in accordance with the invention is implemented to generate a representation of a stereo audio signal, which is composed of a left channel signal (L) and a right channel signal (R). To efficiently utilize transmission bandwidth, such a representation contains (1) information concerning only one of the L and R signals, and (2) parametric information based on which, together with (1), the other signal can be recovered. Because of the design of the parametric coding, the representation advantageously captures localization cues of the stereo audio signal, including intensity and phase characteristics of L and R. As a result, the stereo audio signal recovered from the transmitted representation affords a high stereo quality.

EP1107232A3, drawing sheet 1 — Sheet 1 of 1

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Citations
Document	Relation	Office	Category	Cited during	Relevant claims
EP0776134A2	Cites	European Patent Office (EPO)	Y	Search report	14,16-19
FUCHS H: "IMPROVING JOINT STEREO AUDIO CODING BY ADAPTIVE INTER-CHANNEL PREDICTION", IEEE WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, XX, XX, 17 October 1993 (1993-10-17), pages 39 - 42, XP000570718	Non-patent	–	–	Search report	–

11 members in 5 offices

This recordMember, by publication datePriority claim

Priority claims4

Priority claims
Document	Office	Kind	Date
454026	United States of America	–	1999-12-03
45402699	United States of America	A	1999-12-03
454026	–	–	–
US19990454026	–	–	–

Members11

Family members, oldest first
Document	Office	Kind
CA2326495A1	Canada	A1	2001-06-03
EP1107232A2	European Patent Office (EPO)	A2	2001-06-13
JP2001209399A	Japan	A	2001-08-03
EP1107232A3This record	European Patent Office (EPO)	A3	2002-10-16
US6539357B1	United States of America	B1	2003-03-25
CA2326495C	Canada	C	2004-02-03
US6961432B1	United States of America	B1	2005-11-01
EP1107232B1	European Patent Office (EPO)	B1	2008-06-25
DE60039278D1	Germany	D1	2008-08-07
JP2009205185A	Japan	A	2009-09-10
JP4865010B2	Japan	B2	2012-02-01

33 legal events, as 4 offices reported them to INPADOC

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	Event	Code	Office
2020-11-27	Expiry of rightR071	R071	DE
2020-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2019-01-11	Change of applicant/patenteeR081	R081	DE
2019-01-11	Change of representativeR082	R082	DE
2019-01-11	Change of representativeR082	R082	DE
2017-11-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2017-07-26	Gb: european patent ceased through non-payment of renewal feeCeasedGBPC	GBPC	EP
2017-07-12	Change of applicant/patenteeR081	R081	DE
2017-07-12	Change of applicant/patenteeR081	R081	DE
2017-07-12	Change of representativeR082	R082	DE
2017-07-12	Change of representativeR082	R082	DE
2016-01-29	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2015-11-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2015-08-28	Notification of lapseLapsedST	ST	FR
2015-03-18	Change of representativeR082	R082	DE
2014-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2009-06-03	No opposition filedOpposition26N	26N	EP
2009-05-01	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2009-05-01	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2008-08-07	Corresponds to:REF	REF	EP
2008-06-25	Designated contracting statesAK	AK	EP
2008-06-25	European patent grantedGrantedFG4D	FG4D	GB
2008-05-23	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2006-09-20	Grant fee paidORIGINAL CODE: EPIDOSNIGR3GRAS	GRAS	EP
2006-05-16	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOSNIGR1GRAP	GRAP	EP
2003-07-09	Designation fees paidAKX	AKX	EP
2003-04-23	Request for examination filed17P	17P	EP
2002-10-16	Designated contracting statesAK	AK	EP
2002-10-16	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
2002-08-30	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
2001-06-13	Designated contracting statesAK	AK	EP
2001-06-13	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
2001-04-27	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Joint stereo coding of audio signals

Abstract

Term

Priority claims4

Members11

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