GB1337397A - System for recording and or reproducing four channel signals on a record disc - Google Patents

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

Info

Publication number
GB1337397A
GB1337397A GB5611970A GB5611970A GB1337397A GB 1337397 A GB1337397 A GB 1337397A GB 5611970 A GB5611970 A GB 5611970A GB 5611970 A GB5611970 A GB 5611970A GB 1337397 A GB1337397 A GB 1337397A
Authority
GB
United Kingdom
Prior art keywords
frequency
signals
output
signal
difference signal
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
Application number
GB5611970A
Other languages
English (en)
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.)
Victor Company of Japan Ltd
Nippon Victor KK
Original Assignee
Victor Company of Japan Ltd
Nippon Victor KK
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 Ltd, Nippon Victor KK filed Critical Victor Company of Japan Ltd
Publication of GB1337397A publication Critical patent/GB1337397A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
GB5611970A 1969-11-28 1970-11-25 System for recording and or reproducing four channel signals on a record disc Expired GB1337397A (en)

Applications Claiming Priority (4)

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

Publications (1)

Publication Number Publication Date
GB1337397A true GB1337397A (en) 1973-11-14

Family

ID=27457646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5611970A Expired GB1337397A (en) 1969-11-28 1970-11-25 System for recording and or reproducing four channel signals on a record disc

Country Status (9)

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

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 (nl) * 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 (da) * 1971-10-05 1978-01-23 Victor Company Of Japan Demodulationsanlæg for vinkelmodulerede bølger.
US3906156A (en) * 1971-10-06 1975-09-16 Duane H Cooper Signal matrixing for directional reproduction of sound
DE2303112A1 (de) * 1972-01-24 1973-07-26 Victor Company Of Japan Demodulationsschaltung fuer eine mehrkanal-schallplatte
JPS5228361B2 (nl) * 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 (nl) * 1972-05-02 1976-11-20
JPS5524320B2 (nl) * 1972-05-24 1980-06-27
GB1416631A (en) * 1972-05-30 1975-12-03 Nippon Columbia Discrete 4-channel stereo recording and/or reproducing system
DE2227705C3 (de) * 1972-06-07 1975-09-11 Polygram Gmbh, 2000 Hamburg Verfahren zur Herstellung einer vielkanaligen vorzugsweise vierkanaligen (quadraphonischen) Toninformation
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 (nl) * 1972-10-09 1980-11-12
GB1427607A (en) * 1972-12-11 1976-03-10 Sony Corp Audio signal transmitting systems
JPS5243683B2 (nl) * 1972-12-29 1977-11-01
JPS5550640B2 (nl) * 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 (nl) * 1973-04-25 1978-03-16
JPS49134302A (nl) * 1973-04-25 1974-12-24
JPS5342383B2 (nl) * 1973-04-27 1978-11-10
JPS5527760B2 (nl) * 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 (nl) * 1974-01-31 1978-04-21 Telediffusion Fse
JPS5424841B2 (nl) * 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 (nl) * 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 (nl) * 1955-01-17
US3067292A (en) * 1958-02-03 1962-12-04 Jerry B Minter Stereophonic sound transmission and reproduction
DE1196711B (de) * 1960-10-12 1965-07-15 Deutsche Post Rundfunk Kompatibles Verfahren zur wahlweisen monofonen, stereofonen, mono-ambiofonen oder stereo-ambiofonen Aufnahme, UEbertragung und Wiedergabe
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
NL167255B (nl) 1981-06-16
CY820A (en) 1976-12-01
CA938560A (en) 1973-12-18
NL7017412A (nl) 1971-06-02
CH593536A5 (nl) 1977-12-15
DE2058334A1 (de) 1971-06-09
KE2552A (en) 1975-08-29
DE2058334B2 (de) 1973-06-28
FR2072524A5 (nl) 1971-09-24
US3686471A (en) 1972-08-22
NL167255C (nl) 1981-11-16
CH530063A (fr) 1972-10-31
MY7500058A (en) 1975-12-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee