CY820A - System for recording and/or reproducing four channel signals of a record disc - Google Patents

System for recording and/or reproducing four channel signals of a record disc

Info

Publication number
CY820A
CY820A CY820A CY82070A CY820A CY 820 A CY820 A CY 820A CY 820 A CY820 A CY 820A CY 82070 A CY82070 A CY 82070A CY 820 A CY820 A CY 820A
Authority
CY
Cyprus
Prior art keywords
reproducing
recording
channel signals
record disc
record
Prior art date
Application number
CY820A
Original Assignee
Victor Company Of Japan
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.)
Filing date
Publication date
Priority claimed from JP44095587A external-priority patent/JPS4838242B1/ja
Priority claimed from JP45021826A external-priority patent/JPS4917281B1/ja
Priority claimed from JP5831370A external-priority patent/JPS495244B1/ja
Application filed by Victor Company Of Japan filed Critical Victor Company Of Japan
Publication of CY820A publication Critical patent/CY820A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/006—Systems employing more than two channels, e.g. quadraphonic in which a plurality of audio signals are transformed in a combination of audio signals and modulated signals, e.g. CD-4 systems
CY820A 1969-11-28 1970-11-25 System for recording and/or reproducing four channel signals of a record disc CY820A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP44095587A JPS4838242B1 (en) 1969-11-28 1969-11-28
JP45021826A JPS4917281B1 (en) 1970-03-15 1970-03-15
JP2457970 1970-03-24
JP5831370A JPS495244B1 (en) 1970-07-05 1970-07-05

Publications (1)

Publication Number Publication Date
CY820A true CY820A (en) 1976-12-01

Family

ID=27457646

Family Applications (1)

Application Number Title Priority Date Filing Date
CY820A CY820A (en) 1969-11-28 1970-11-25 System for recording and/or reproducing four channel signals of a record disc

Country Status (9)

Country Link
US (1) US3686471A (en)
CA (1) CA938560A (en)
CH (2) CH530063A (en)
CY (1) CY820A (en)
FR (1) FR2072524A5 (en)
GB (1) GB1337397A (en)
KE (1) KE2552A (en)
MY (1) MY7500058A (en)
NL (1) NL167255C (en)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830978A (en) * 1971-07-08 1974-08-20 Matsushita Electric Ind Co Ltd Circuit for mixing four audio input signals to produce four audio output signals
US3869583A (en) * 1971-08-05 1975-03-04 Columbia Broadcasting Syst Inc Quadruphonic disc recording system utilizing single sideband modulation
JPS5625811B2 (en) * 1971-09-18 1981-06-15
US4107478A (en) * 1971-10-05 1978-08-15 Victor Company Of Japan, Limited Angle modulated wave demodulation system
DK137153B (en) * 1971-10-05 1978-01-23 Victor Company Of Japan Demodulation system for angle-modulated waves.
US3906156A (en) * 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
US3854098A (en) * 1972-01-24 1974-12-10 Victor Company Of Japan Multichannel disc demodulation circuit
JPS5228361B2 (en) * 1972-03-09 1977-07-26
US3761628A (en) * 1972-04-13 1973-09-25 Columbia Broadcasting Syst Inc Stereo-quadraphonic matrix system with matrix or discrete sound reproduction capability
JPS5143361B2 (en) * 1972-05-02 1976-11-20
JPS5524320B2 (en) * 1972-05-24 1980-06-27
CA997278A (en) * 1972-05-30 1976-09-21 Keiichiro Ogura Discrete 4-channel stereo recording and/or reproducing system
DE2227705C3 (en) * 1972-06-07 1975-09-11 Polygram Gmbh, 2000 Hamburg Method for producing multi-channel, preferably four-channel (quadraphonic) sound information
GB1447391A (en) * 1972-08-17 1976-08-25 Nagamura F Grooved record playback system
US3934087A (en) * 1972-10-07 1976-01-20 Victor Company Of Japan, Limited Angle modulated wave demodulation system
JPS5544519B2 (en) * 1972-10-09 1980-11-12
GB1427607A (en) * 1972-12-11 1976-03-10 Sony Corp Audio signal transmitting systems
JPS5243683B2 (en) * 1972-12-29 1977-11-01
JPS5550640B2 (en) * 1973-03-09 1980-12-19
US3852530A (en) * 1973-03-19 1974-12-03 M Shen Single stage power amplifiers for multiple signal channels
US3875522A (en) * 1973-04-13 1975-04-01 Signetics Corp Integrated direct-coupled electronic attenuator
JPS537249B2 (en) * 1973-04-25 1978-03-16
JPS49134302A (en) * 1973-04-25 1974-12-24
JPS5342383B2 (en) * 1973-04-27 1978-11-10
JPS5527760B2 (en) * 1973-05-10 1980-07-23
US3991283A (en) * 1973-05-21 1976-11-09 Victor Company Of Japan, Limited Multichannel record disc reproducing system
US3886312A (en) * 1973-08-16 1975-05-27 Quadracast Systems Decoder for four channel record
US3883700A (en) * 1973-12-26 1975-05-13 Cbs Inc System for reproducing four channel signals recorded on a disc record
FR2260246B1 (en) * 1974-01-31 1978-04-21 Telediffusion Fse
JPS5424841B2 (en) * 1974-02-26 1979-08-24
US3894201A (en) * 1974-05-31 1975-07-08 Rca Corp System for dynamic and static muting
US4002840A (en) * 1974-06-25 1977-01-11 Matsushita Electric Industrial Co., Ltd. Angle-modulated signal transmission system
US4016373A (en) * 1974-09-26 1977-04-05 Victor Company Of Japan, Limited Multichannel record disc recording system
JPS5757763B2 (en) * 1974-11-29 1982-12-06 Nippon Columbia
US3988025A (en) * 1975-02-13 1976-10-26 Fumitaka Nagamura Record disc cutting apparatus
US4006306A (en) * 1975-10-10 1977-02-01 Yudin Industries, Inc. Audio signal processing apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2281405A (en) * 1938-05-11 1942-04-28 Barrish Robert Lloyd Method and apparatus for transmission of signals
US2349886A (en) * 1942-01-30 1944-05-30 Rca Corp Phase modulation recording and reproducing system
BE544453A (en) * 1955-01-17
US3067292A (en) * 1958-02-03 1962-12-04 Jerry B Minter Stereophonic sound transmission and reproduction
DE1196711B (en) * 1960-10-12 1965-07-15 Deutsche Post Rundfunk Compatible procedure for monophonic, stereophonic, monophonic or stereo-ambiophonic recording, transmission and playback
US3401237A (en) * 1962-08-27 1968-09-10 Victor Company Of Japan Simultaneous recording of two signals per channel

Also Published As

Publication number Publication date
MY7500058A (en) 1975-12-31
FR2072524A5 (en) 1971-09-24
CH593536A5 (en) 1977-12-15
KE2552A (en) 1975-08-29
NL7017412A (en) 1971-06-02
DE2058334B2 (en) 1973-06-28
DE2058334A1 (en) 1971-06-09
US3686471A (en) 1972-08-22
CA938560A (en) 1973-12-18
NL167255B (en) 1981-06-16
NL167255C (en) 1981-11-16
CH530063A (en) 1972-10-31
GB1337397A (en) 1973-11-14

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