CA1001957A - Multisignal transmission apparatus - Google Patents
Multisignal transmission apparatusInfo
- Publication number
- CA1001957A CA1001957A CA246,161A CA246161A CA1001957A CA 1001957 A CA1001957 A CA 1001957A CA 246161 A CA246161 A CA 246161A CA 1001957 A CA1001957 A CA 1001957A
- Authority
- CA
- Canada
- Prior art keywords
- multisignal
- transmission apparatus
- transmission
- multisignal transmission
- Prior art date
- 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.)
- Expired
Links
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)
- Mathematical Physics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Stereophonic System (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Stereo-Broadcasting Methods (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP46053771A JPS5213082B1 (en) | 1971-07-19 | 1971-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA1001957A true CA1001957A (en) | 1976-12-21 |
Family
ID=12952066
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA147,365A Expired CA991086A (en) | 1971-07-19 | 1972-07-18 | Multisignal transmission apparatus |
CA246,161A Expired CA1001957A (en) | 1971-07-19 | 1976-02-20 | Multisignal transmission apparatus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA147,365A Expired CA991086A (en) | 1971-07-19 | 1972-07-18 | Multisignal transmission apparatus |
Country Status (8)
Country | Link |
---|---|
US (1) | US3786193A (en) |
JP (1) | JPS5213082B1 (en) |
CA (2) | CA991086A (en) |
DE (1) | DE2235238A1 (en) |
FR (1) | FR2146394B1 (en) |
GB (1) | GB1400061A (en) |
IT (1) | IT963000B (en) |
NL (1) | NL7209930A (en) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3985978A (en) * | 1971-10-06 | 1976-10-12 | Cooper Duane H | Method and apparatus for control of FM beat distortion |
GB1402320A (en) * | 1971-10-25 | 1975-08-06 | Sansui Electric Co | Decoder for use in 4-2-4 matrix playback system |
JPS5210364B2 (en) * | 1972-05-02 | 1977-03-23 | ||
DE2227705C3 (en) * | 1972-06-07 | 1975-09-11 | Polygram Gmbh, 2000 Hamburg | Method for producing multi-channel, preferably four-channel (quadraphonic) sound information |
US3883692A (en) * | 1972-06-16 | 1975-05-13 | Sony Corp | Decoder apparatus with logic circuit for use with a four channel stereo |
GB1447392A (en) * | 1972-08-17 | 1976-08-25 | Nagamura F | Recording apparatus |
JPS5235282B2 (en) * | 1972-09-09 | 1977-09-08 | ||
DE2252132C3 (en) | 1972-10-24 | 1982-08-26 | Sansui Electric Co., Ltd., Tokyo | Decoder for a 4-2-4 matrix system |
DE2253696B1 (en) * | 1972-11-02 | 1974-02-21 | Electroacustic Gmbh, 2300 Kiel | PROCESS FOR REDUCING INTERFERENCE VOLTAGE DURING MULTI-CHANNEL REPRODUCTION OF ACOUSTIC REPRESENTATIONS |
GB1450533A (en) * | 1972-11-08 | 1976-09-22 | Ferrograph Co Ltd | Stereo sound reproducing apparatus |
US3890466A (en) * | 1973-02-01 | 1975-06-17 | Cbs Inc | Encoders for quadraphonic sound system |
JPS5317283B2 (en) * | 1973-03-07 | 1978-06-07 | ||
JPS5248001B2 (en) * | 1973-08-20 | 1977-12-07 | ||
US3919478A (en) * | 1974-01-17 | 1975-11-11 | Zenith Radio Corp | Passive four-channel decoder |
GB1514162A (en) * | 1974-03-25 | 1978-06-14 | Ruggles W | Directional enhancement system for quadraphonic decoders |
US3875338A (en) * | 1974-04-18 | 1975-04-01 | Columbia Broadcasting Syst Inc | Decoder matrix for quadraphonic sound systems |
US3943287A (en) * | 1974-06-03 | 1976-03-09 | Cbs Inc. | Apparatus and method for decoding four channel sound |
US4799260A (en) * | 1985-03-07 | 1989-01-17 | Dolby Laboratories Licensing Corporation | Variable matrix decoder |
US5046098A (en) * | 1985-03-07 | 1991-09-03 | Dolby Laboratories Licensing Corporation | Variable matrix decoder with three output channels |
US4862502A (en) * | 1988-01-06 | 1989-08-29 | Lexicon, Inc. | Sound reproduction |
US5136650A (en) * | 1991-01-09 | 1992-08-04 | Lexicon, Inc. | Sound reproduction |
US5157697A (en) * | 1991-03-21 | 1992-10-20 | Novatel Communications, Ltd. | Receiver employing correlation technique for canceling cross-talk between in-phase and quadrature channels prior to decoding |
US5796844A (en) * | 1996-07-19 | 1998-08-18 | Lexicon | Multichannel active matrix sound reproduction with maximum lateral separation |
US5870480A (en) * | 1996-07-19 | 1999-02-09 | Lexicon | Multichannel active matrix encoder and decoder with maximum lateral separation |
EP2190221B1 (en) * | 2008-11-20 | 2018-09-12 | Harman Becker Automotive Systems GmbH | Audio system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3632886A (en) * | 1969-12-29 | 1972-01-04 | Peter Scheiber | Quadrasonic sound system |
US3708631A (en) * | 1970-06-08 | 1973-01-02 | Columbia Broadcasting Syst Inc | Quadraphonic reproducing system with gain control |
-
1971
- 1971-07-19 JP JP46053771A patent/JPS5213082B1/ja active Pending
-
1972
- 1972-07-10 GB GB3214372A patent/GB1400061A/en not_active Expired
- 1972-07-17 US US00272439A patent/US3786193A/en not_active Expired - Lifetime
- 1972-07-18 CA CA147,365A patent/CA991086A/en not_active Expired
- 1972-07-18 DE DE2235238A patent/DE2235238A1/en not_active Ceased
- 1972-07-18 NL NL7209930A patent/NL7209930A/xx not_active Application Discontinuation
- 1972-07-19 IT IT27179/72A patent/IT963000B/en active
- 1972-07-19 FR FR7226055A patent/FR2146394B1/fr not_active Expired
-
1976
- 1976-02-20 CA CA246,161A patent/CA1001957A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL7209930A (en) | 1973-01-23 |
CA991086A (en) | 1976-06-15 |
IT963000B (en) | 1973-12-31 |
US3786193A (en) | 1974-01-15 |
FR2146394A1 (en) | 1973-03-02 |
FR2146394B1 (en) | 1977-04-01 |
DE2235238A1 (en) | 1973-02-01 |
GB1400061A (en) | 1975-07-16 |
JPS5213082B1 (en) | 1977-04-12 |
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