EP0843301A3

Methods for generating comfort noise during discontinous transmission

Abstract

An improved method for generating comfort noise (CN) in a mobile terminal operating in a discontinuous transmission (DTX) mode. In one embodiment the invention provides an improved method for comfort noise generation, in which a random excitation is modified by a spectral control filter so that the frequency content of comfort noise and background noise become similar. In another embodiment the transmitter identifies speech coding parameters that are not representative of the actual background noise, and replaces the identified parameters with parameters having a median value. In this manner the non-representative parameters do not skew the result of an averaging operation.

EP0843301A3, drawing sheet 1 — Sheet 1 of 1

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Projected expiry passed 14 November 2017, 8.9 years ago.

1 sheet

Sheet 1

Every citation, both waysCites: the store holds 2 of 3

Citations
Document	Relation	Office	Category	Cited during	Relevant claims
WO9628809A1	Cites	World Intellectual Property Organization (WIPO)	A	Search report	25,45
WO9634382A1	Cites	World Intellectual Property Organization (WIPO)	A	Search report	25,45

17 members in 9 offices

This recordMember, by publication datePriority claim

Priority claims11

Priority claims
Document	Office	Kind	Date
31047P	United States of America	–	1996-11-15
3104796	United States of America	P	1996-11-15
3104796	United States of America	P	1996-11-15
31321	United States of America	–	1996-11-19
3132196	United States of America	P	1996-11-19
3132196	United States of America	P	1996-11-19
96530397	United States of America	A	1997-11-06
96530397	United States of America	A	1997-11-06
US19960031047P	–	–	–
US19960031321P	–	–	–
US19970965303	–	–	–

Members17

Family members, oldest first
Document	Office	Kind
EP0843301A2	European Patent Office (EPO)	A2	1998-05-20
JPH10190498A	Japan	A	1998-07-21
CN1200000A	China	A	1998-11-25
BR9705747A	Brazil	A	1999-03-30
EP0843301A3This record	European Patent Office (EPO)	A3	1999-05-06
US5960389A	United States of America	A	1999-09-28
AR010612A1	Argentina	A1	2000-06-28
US6606593B1	United States of America	B1	2003-08-12
EP0843301B1	European Patent Office (EPO)	B1	2003-09-10
AT249671T	Austria	T	2003-09-15
ATE249671T1	Austria	T1	2003-09-15
DE69724739D1	Germany	D1	2003-10-16
JP3464371B2	Japan	B2	2003-11-10
ES2206667T3	Spain	T3	2004-05-16
DE69724739T2	Germany	T2	2004-07-22
CN100350807C	China	C	2007-11-21
BR9705747B1	Brazil	B1	2011-11-01

65 legal events, as 10 offices reported them to INPADOC

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	Event	Code	Office
2018-07-31	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2018-05-08	Announcement of lapse in spainLapsedFD2A	FD2A	ES
2018-02-28	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2018-02-08	Patent expired because of reaching the maximum lifetime of a patentExpiredMK	MK	BE
2018-02-08	Change of ownershipPD	PD	BE
2018-01-02	Ep patent has lapsedLapsedEUG	EUG	SE
2017-12-06	Patent expired after termination of 20 yearsExpiredPE20	PE20	GB
2017-11-30	Patent ceasedCeasedPL	PL	CH
2017-11-15	Patent expired because of reaching the maximum lifetime of a patentExpiredMK	MK	NL
2017-11-14	Expiry of rightR071	R071	DE
2017-02-28	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-02-28	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-02-28	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-02-28	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2017-01-31	Annual fee paid to national office [announced via postgrant information from national office to epo]GrantedPGFP	PGFP	EP
2016-10-14	Fee paymentPLFP	PLFP	FR
2016-04-28	Change of ownershipPD	PD	NL
2015-12-31	AssignmentPUE	PUE	CH
2015-11-30	Transfer of patentPC2A	PC2A	ES
2015-10-08	Fee paymentPLFP	PLFP	FR
2015-10-07	Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)REGISTERED BETWEEN 20150910 AND 20150916732E	732E	GB
2015-04-23	Change of applicant/patenteeR081	R081	DE
2015-04-23	Change of representativeR082	R082	DE
2015-04-17	Transmission of propertyTP	TP	FR
2015-03-12	Change of representativeR082	R082	DE
2007-10-15	Name/firm changedPFA	PFA	CH
2004-09-01	No opposition filedOpposition26N	26N	EP
2004-08-25	Patent lapsedLapsedMM4A	MM4A	IE
2004-07-16	No opposition filed within time limitOppositionORIGINAL CODE: 0009261PLBE	PLBE	EP
2004-07-16	Information on the status of an ep patent application or granted ep patentGrantedSTATUS: NO OPPOSITION FILED WITHIN TIME LIMITSTAA	STAA	EP
2004-05-16	Definitive protectionFG2A	FG2A	ES
2004-04-30	Fr: translation filedET	ET	EP
2004-01-07	Translation of granted ep patentGrantedTRGR	TRGR	SE
2003-12-15	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-12-10	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-12-10	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-11-30	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-11-14	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-11-14	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-10-29	European patents granted designating irelandGrantedFG4D	FG4D	IE
2003-10-16	Corresponds to:REF	REF	EP
2003-10-15	New agentNV	NV	CH
2003-09-15	European patent takes effect as a national patent in ch/liEP	EP	CH
2003-09-10	Designated contracting statesAK	AK	EP
2003-09-10	European patent grantedGrantedFG4D	FG4D	GB
2003-09-10	Lapsed in a contracting state [announced via postgrant information from national office to epo]LapsedPG25	PG25	EP
2003-07-25	(expected) grantORIGINAL CODE: 0009210GRAA	GRAA	EP
2003-06-05	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
2003-03-12	Information provided on ipc code assigned before grantRIC1	RIC1	EP
2003-01-29	Despatch of communication of intention to grant a patentORIGINAL CODE: EPIDOS IGRAGRAH	GRAH	EP
2002-08-28	First examination report despatched17Q	17Q	EP
2002-03-13	Party data changed (applicant data changed or rights of an application transferred)RAP1	RAP1	EP
2000-01-19	Designation fees paidAT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SEAKX	AKX	EP
2000-01-05	Request for examination filed17P	17P	EP
1999-05-06	Designated contracting statesAK	AK	EP
1999-05-06	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
1999-03-19	Search report despatchedORIGINAL CODE: 0009013PUAL	PUAL	EP
1998-05-20	Designated contracting statesAK	AK	EP
1998-05-20	Request for extension of the european patentAL;LT;LV;MK;RO;SIAX	AX	EP
1998-04-03	Public reference made under article 153(3) epc to a published international application that has entered the european phaseORIGINAL CODE: 0009012PUAI	PUAI	EP

Methods for generating comfort noise during discontinous transmission

Abstract

Term

Priority claims11

Members17

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Events

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Titles3

Classification

Designated states24