BE785279A - Systeme d'enregistrement et de reproduction quadriphonique - Google Patents

Systeme d'enregistrement et de reproduction quadriphonique

Info

Publication number: BE785279A
Authority: BE; Belgium
Prior art keywords: quadriphone; recording; playback system; playback; quadriphone recording
Prior art date: 1971-06-23

Application number

BE785279A

Other languages

English (en)

Inventor

B B Bauer

Original Assignee

Columbia Broadcasting Syst Inc

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.)

1971-06-23

Filing date

1972-06-22

Publication date

1972-10-16

1972-06-22 Application filed by Columbia Broadcasting Syst Inc filed Critical Columbia Broadcasting Syst Inc

1972-10-16 Publication of BE785279A publication Critical patent/BE785279A/fr

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Algebra (AREA)
General Physics & Mathematics (AREA)
Mathematical Analysis (AREA)
Mathematical Optimization (AREA)
Mathematical Physics (AREA)
Pure & Applied Mathematics (AREA)
Theoretical Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Stereophonic System (AREA)
Stereo-Broadcasting Methods (AREA)

BE785279A 1971-06-23 1972-06-22 Systeme d'enregistrement et de reproduction quadriphonique BE785279A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US15597671A	1971-06-23	1971-06-23

Publications (1)

Publication Number	Publication Date
BE785279A true BE785279A (fr)	1972-10-16

Family

ID=22557545

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE785279A BE785279A (fr)	1971-06-23	1972-06-22	Systeme d'enregistrement et de reproduction quadriphonique

Country Status (10)

Country	Link
US (1)	US3798373A (fr)
JP (1)	JPS5110963B1 (fr)
AU (1)	AU464001B2 (fr)
BE (1)	BE785279A (fr)
CA (1)	CA973806A (fr)
DE (1)	DE2230842C3 (fr)
FR (1)	FR2143325B1 (fr)
GB (1)	GB1396352A (fr)
IT (1)	IT958512B (fr)
NL (1)	NL7208607A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1398786A (en) *	1971-08-06	1975-06-25	Sony Corp	Multisignal transmission apparatus
DE2252132C3 (de)	1972-10-24	1982-08-26	Sansui Electric Co., Ltd., Tokyo	Decodierer für ein 4-2-4-Matrixsystem
JPS5527517B2 (fr) *	1972-12-01	1980-07-21
JPS5320343B2 (fr) *	1973-03-29	1978-06-26
GB1514162A (en) *	1974-03-25	1978-06-14	Ruggles W	Directional enhancement system for quadraphonic decoders
US3937885A (en) *	1974-09-06	1976-02-10	Motorola, Inc.	Control circuit for a matrixed four channel audio reproducing system
JPS5453831U (fr) *	1977-09-22	1979-04-13
JPS54137248U (fr) *	1978-03-17	1979-09-22
US5046098A (en) *	1985-03-07	1991-09-03	Dolby Laboratories Licensing Corporation	Variable matrix decoder with three output channels
US4799260A (en) *	1985-03-07	1989-01-17	Dolby Laboratories Licensing Corporation	Variable matrix decoder
US4862502A (en) *	1988-01-06	1989-08-29	Lexicon, Inc.	Sound reproduction
US5136650A (en) *	1991-01-09	1992-08-04	Lexicon, Inc.	Sound reproduction
US5870480A (en) *	1996-07-19	1999-02-09	Lexicon	Multichannel active matrix encoder and decoder with maximum lateral separation
US5796844A (en) *	1996-07-19	1998-08-18	Lexicon	Multichannel active matrix sound reproduction with maximum lateral separation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3632886A (en) *	1969-12-29	1972-01-04	Peter Scheiber	Quadrasonic sound system
US3646574A (en) *	1970-05-25	1972-02-29	Howard S Holzer	Compatible stereo generator
US3684835A (en) *	1970-07-29	1972-08-15	Parasound Inc	Four channel stereo synthesizer

1971
- 1971-06-23 US US00155976A patent/US3798373A/en not_active Expired - Lifetime
1972
- 1972-06-13 CA CA144,532A patent/CA973806A/en not_active Expired
- 1972-06-22 BE BE785279A patent/BE785279A/fr unknown
- 1972-06-22 FR FR7222631A patent/FR2143325B1/fr not_active Expired
- 1972-06-22 NL NL7208607A patent/NL7208607A/xx not_active Application Discontinuation
- 1972-06-22 AU AU43775/72A patent/AU464001B2/en not_active Expired
- 1972-06-23 DE DE2230842A patent/DE2230842C3/de not_active Expired
- 1972-06-23 GB GB2958472A patent/GB1396352A/en not_active Expired
- 1972-06-23 IT IT51115/72A patent/IT958512B/it active
- 1972-06-23 JP JP47063100A patent/JPS5110963B1/ja active Pending

Also Published As

Publication number	Publication date
AU4377572A (en)	1974-01-03
JPS5110963B1 (fr)	1976-04-08
AU464001B2 (en)	1975-08-14
FR2143325B1 (fr)	1979-04-06
FR2143325A1 (fr)	1973-02-02
IT958512B (it)	1973-10-30
DE2230842A1 (de)	1972-12-28
DE2230842C3 (de)	1980-10-16
NL7208607A (fr)	1972-12-28
US3798373A (en)	1974-03-19
DE2230842B2 (fr)	1980-02-21
CA973806A (en)	1975-09-02
GB1396352A (en)	1975-06-04

Similar Documents

Publication	Publication Date	Title
BE768184A (fr)	1971-12-07	Systeme d'enregistrement et de reproduction quadriphonique
MY7600164A (en)	1976-12-31	Information record playback systems
BE789941A (fr)	1973-02-01	Systeme d'enregistrement et de lecture d'images miniaturisees
FR2306469A1 (fr)	1976-10-29	Systeme d'enregistrement et de reproduction d'un hologramme
CA1022677A (en)	1977-12-13	Video recording and reproducing system
BE761969A (fr)	1971-07-01	Systeme d'enregistrement et de reproduction pour signal video de couleur
BE787543A (fr)	1972-12-01	Ensemble d'enregistrement et/ou de reproduction magnetique
AT354757B (de)	1979-01-25	Kassetten-aufnahme- und/oder-wiedergabegeraet
BE785279A (fr)	1972-10-16	Systeme d'enregistrement et de reproduction quadriphonique
BE788832A (fr)	1973-03-14	Appareils d'enregistrement et de reproduction magnetique
BE780710R (fr)	1972-09-15	Systeme d'enregistrement et de reproduction
BE761970A (fr)	1971-07-01	Systeme d'enregistrement et de reproduction pour signal video de couleur
BE792878A (fr)	1973-03-30	Systeme d'enregistrement et de lecture
AU472827B2 (en)	1976-06-03	Magnetic recording and reproducing system
ZA725415B (en)	1973-04-25	Magnetic recording and/or reproducing system
NL7414973A (nl)	1975-05-21	Magnetische video opneem- en reproduktie-in- richting.
SE392788B (sv)	1977-04-18	Inspelnings- och avspelningsapparat for videosignaler
CA992199A (en)	1976-06-29	Magnetic recording and/or reproducing system
ATA685272A (de)	1976-08-15	Aufnahme- und wiedergabegerat
NL7415323A (nl)	1975-05-27	Video-opneem- en/of reproduceerinrichting.
SE388958B (sv)	1976-10-18	Inspelnings- och avspelningsapparat for videosignaler
BE768242A (fr)	1971-12-08	Systeme d'enregistrement et de reproduction quadriphonique
BE772298A (fr)	1972-03-17	Systeme d'enregistrement et de reproduction quadriphonique
CA1011454A (en)	1977-05-31	Magnetic recording and/or reproducing system
ZA728059B (en)	1974-04-24	Magnetic recording and/or reproducing system