EP0546619A3 - - Google Patents

Download PDF

Info

Publication number: EP0546619A3
Authority: EP; European Patent Office
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP19920203748

Other versions

EP0546619B1 (en

EP0546619A2 (en

Inventor

Wayne Schott

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

Koninklijke Philips Electronics NV

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1991-12-09

Filing date

1992-12-03

Publication date

1994-04-20

1992-12-03 Application filed by Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV

1993-06-16 Publication of EP0546619A2 publication Critical patent/EP0546619A2/en

1994-04-20 Publication of EP0546619A3 publication Critical patent/EP0546619A3/xx

1998-09-23 Application granted granted Critical

1998-09-23 Publication of EP0546619B1 publication Critical patent/EP0546619B1/en

2012-12-03 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S1/00—Two-channel systems

EP19920203748 1991-12-09 1992-12-03 Low frequency audio doubling and mixing circuit Expired - Lifetime EP0546619B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
US80535691A	1991-12-09	1991-12-09
US805356		1991-12-09

Publications (3)

Publication Number	Publication Date
EP0546619A2 EP0546619A2 (en)	1993-06-16
EP0546619A3 true EP0546619A3 (en)	1994-04-20
EP0546619B1 EP0546619B1 (en)	1998-09-23

Family

ID=25191353

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19920203748 Expired - Lifetime EP0546619B1 (en)	1991-12-09	1992-12-03	Low frequency audio doubling and mixing circuit

Country Status (3)

Country	Link
EP (1)	EP0546619B1 (en)
JP (1)	JPH05328481A (en)
DE (1)	DE69227091T2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8050434B1 (en)	2006-12-21	2011-11-01	Srs Labs, Inc.	Multi-channel audio enhancement system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0746083A (en) *	1993-07-27	1995-02-14	Toshiba Corp	Sound synthesizing and band limiting circuit and low-frequency sound reinforcing circuit
JPH08237800A (en) *	1995-02-27	1996-09-13	Matsushita Electric Ind Co Ltd	Low tone intensifying circuit
TW343417B (en) *	1996-05-08	1998-10-21	Philips Eloctronics N V	Circuit, audio system and method for processing signals, and a harmonics generator
FI105522B (en) *	1996-08-06	2000-08-31	Sample Rate Systems Oy	Arrangement for home theater or other audio equipment
US5930373A (en) *	1997-04-04	1999-07-27	K.S. Waves Ltd.	Method and system for enhancing quality of sound signal
US6792119B1 (en)	1997-05-05	2004-09-14	Koninklijke Philips Electronics N.V.	Audio system
WO1999025150A1 (en)	1997-11-07	1999-05-20	Koninklijke Philips Electronics N.V.	Audio system comprising audio signal processing circuit
CN1153504C (en) *	1997-11-07	2004-06-09	皇家菲利浦电子有限公司	Audio system comprising audio signal processing circuit
WO1999026454A1 (en) *	1997-11-17	1999-05-27	Srs Labs, Inc.	Low-frequency audio simulation system
US6285767B1 (en)	1998-09-04	2001-09-04	Srs Labs, Inc.	Low-frequency audio enhancement system
CN1158898C (en) *	1998-09-08	2004-07-21	皇家菲利浦电子有限公司	Means for bass enhancement in an audio system
KR20010043780A (en) *	1999-03-24	2001-05-25	요트.게.아. 롤페즈	Band stop filter
US7031474B1 (en)	1999-10-04	2006-04-18	Srs Labs, Inc.	Acoustic correction apparatus
US7277767B2 (en)	1999-12-10	2007-10-02	Srs Labs, Inc.	System and method for enhanced streaming audio
DE60106680T2 (en)	2000-05-30	2006-02-09	Yamaha Corp., Hamamatsu	Waveform signal generation with synthesizing of pseudo-deep tones
US7574009B2 (en)	2001-09-21	2009-08-11	Roland Aubauer	Method and apparatus for controlling the reproduction in audio signals in electroacoustic converters
KR101104920B1 (en) *	2003-09-16	2012-01-12	코닌클리케 필립스 일렉트로닉스 엔.브이.	Audio frequency range adaptation
PL2798737T3 (en)	2011-12-27	2019-05-31	Dts Inc	Bass enhancement system
US9258664B2 (en)	2013-05-23	2016-02-09	Comhear, Inc.	Headphone audio enhancement system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3710146A (en) *	1970-07-09	1973-01-09	Sony Corp	Frequency doubler circuit
GB2153187A (en) *	1984-01-20	1985-08-14	Linn Prod Ltd	A method of processing audio information
US4607381A (en) *	1984-10-05	1986-08-19	Sony Corporation	Signal mixing circuit
US4734591A (en) *	1985-04-26	1988-03-29	Kabushiki Kaisha Toshiba	Frequency doubler

1992
- 1992-12-03 EP EP19920203748 patent/EP0546619B1/en not_active Expired - Lifetime
- 1992-12-03 DE DE1992627091 patent/DE69227091T2/en not_active Expired - Fee Related
- 1992-12-07 JP JP4326729A patent/JPH05328481A/en active Pending

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3710146A (en) *	1970-07-09	1973-01-09	Sony Corp	Frequency doubler circuit
GB2153187A (en) *	1984-01-20	1985-08-14	Linn Prod Ltd	A method of processing audio information
US4607381A (en) *	1984-10-05	1986-08-19	Sony Corporation	Signal mixing circuit
US4734591A (en) *	1985-04-26	1988-03-29	Kabushiki Kaisha Toshiba	Frequency doubler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US8050434B1 (en)	2006-12-21	2011-11-01	Srs Labs, Inc.	Multi-channel audio enhancement system
US8509464B1 (en)	2006-12-21	2013-08-13	Dts Llc	Multi-channel audio enhancement system
US9232312B2 (en)	2006-12-21	2016-01-05	Dts Llc	Multi-channel audio enhancement system

Also Published As

Publication number	Publication date
JPH05328481A (en)	1993-12-10
DE69227091D1 (en)	1998-10-29
DE69227091T2 (en)	1999-05-20
EP0546619B1 (en)	1998-09-23
EP0546619A2 (en)	1993-06-16

Legal Events

Date	Code	Title	Description
1993-04-29	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1993-06-16	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB
1994-03-02	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1994-04-20	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB
1994-12-14	17P	Request for examination filed	Effective date: 19941019
1996-12-11	17Q	First examination report despatched	Effective date: 19961028
1997-11-20	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-03-25	GRAG	Despatch of communication of intention to grant	Free format text: ORIGINAL CODE: EPIDOS AGRA
1998-03-25	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1998-07-20	GRAH	Despatch of communication of intention to grant a patent	Free format text: ORIGINAL CODE: EPIDOS IGRA
1998-08-07	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1998-08-26	RAP3	Party data changed (applicant data changed or rights of an application transferred)	Owner name: KONINKLIJKE PHILIPS ELECTRONICS N.V.
1998-09-23	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB
1998-10-29	REF	Corresponds to:	Ref document number: 69227091 Country of ref document: DE Date of ref document: 19981029
1998-12-31	ET	Fr: translation filed
1999-07-30	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1999-07-30	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1999-09-15	26N	No opposition filed
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-10-09	REG	Reference to a national code	Ref country code: GB Ref legal event code: 746 Effective date: 20020918
2002-11-22	REG	Reference to a national code	Ref country code: FR Ref legal event code: D6
2003-05-02	REG	Reference to a national code	Ref country code: FR Ref legal event code: LT
2005-06-22	REG	Reference to a national code	Ref country code: GB Ref legal event code: 747D
2005-10-26	REG	Reference to a national code	Ref country code: GB Ref legal event code: 747C
2006-12-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20061218 Year of fee payment: 15
2007-02-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20070208 Year of fee payment: 15
2008-08-27	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20071203
2008-10-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20080701
2008-11-28	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20080409 Year of fee payment: 16
2008-12-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071203
2009-10-02	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST Effective date: 20090831
2010-04-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081231

Publication	Publication Date	Title
DE9106553U1 (en)	1991-08-08
DE9102607U1 (en)	1991-06-13
DE9104257U1 (en)	1991-06-06
DE9102391U1 (en)	1991-05-16
DE9100505U1 (en)	1991-04-04
DE9104002U1 (en)	1991-05-29
DE9102351U1 (en)	1991-05-16
DE9104251U1 (en)	1991-08-14
DE9104212U1 (en)	1991-06-20
DE9100416U1 (en)	1991-04-04
DE9103050U1 (en)	1991-06-13
DE9105789U1 (en)	1991-07-11
DE9101103U1 (en)	1991-04-18
DE9104091U1 (en)	1991-09-05
DE9100775U1 (en)	1991-04-11
DE9104727U1 (en)	1991-06-20
DE9105178U1 (en)	1991-06-27
DE9101488U1 (en)	1991-05-02
DE9105456U1 (en)	1991-07-18
DE9102898U1 (en)	1991-05-29
DE9106496U1 (en)	1991-12-05
DE9100564U1 (en)	1991-04-11
DE9103336U1 (en)	1992-04-16
DE9102063U1 (en)	1991-05-16
DE9103912U1 (en)	1991-05-29