CA1024219A - Four-channel stereophonic demodulating system - Google Patents

Four-channel stereophonic demodulating system

Info

Publication number
CA1024219A
CA1024219A CA182,156A CA182156A CA1024219A CA 1024219 A CA1024219 A CA 1024219A CA 182156 A CA182156 A CA 182156A CA 1024219 A CA1024219 A CA 1024219A
Authority
CA
Canada
Prior art keywords
demodulating system
channel stereophonic
stereophonic demodulating
channel
stereophonic
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
CA182,156A
Other languages
English (en)
French (fr)
Other versions
CA182156S (fr
Inventor
Tuneo Ohkubo
Yoshio Horiike
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA1024219A publication Critical patent/CA1024219A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/88—Stereophonic broadcast systems
    • H04H20/89—Stereophonic broadcast systems using three or more audio channels, e.g. triphonic or quadraphonic

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)
CA182,156A 1972-09-29 1973-09-28 Four-channel stereophonic demodulating system Expired CA1024219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9851872A JPS5315602B2 (cs) 1972-09-29 1972-09-29

Publications (1)

Publication Number Publication Date
CA1024219A true CA1024219A (en) 1978-01-10

Family

ID=14221856

Family Applications (1)

Application Number Title Priority Date Filing Date
CA182,156A Expired CA1024219A (en) 1972-09-29 1973-09-28 Four-channel stereophonic demodulating system

Country Status (7)

Country Link
US (1) US3909539A (cs)
JP (1) JPS5315602B2 (cs)
CA (1) CA1024219A (cs)
DE (1) DE2348411C3 (cs)
FR (1) FR2201581B1 (cs)
GB (1) GB1401562A (cs)
NL (1) NL7313375A (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4061882A (en) * 1976-08-13 1977-12-06 Quadracast Systems, Inc. Quadrature multiplying four-channel demodulator
JPS6322930A (ja) * 1986-07-16 1988-01-30 Yutani Heavy Ind Ltd 建設機械の油圧回路

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149396B (de) * 1961-12-02 1963-05-30 Telefunken Patent Empfangsschaltung fuer kompatible Rundfunk-Stereophonie
US3308241A (en) * 1963-01-23 1967-03-07 Tokyo Shibaura Electric Co Fm stereo demodulating device using a diode ring modulator switching circuit
DE1200364B (de) * 1963-09-05 1965-09-09 Telefunken Patent Schaltungsanordnung zur Gewinnung der beiden Lautsprechersignale auf der Empfangsseite bei der kompatiblen Rundfunk-Stereophonie nach dem Multiplexverfahren
US3309464A (en) * 1964-01-03 1967-03-14 Philco Corp Stereophonic receiver having crosstalk compensation means
FR1484513A (cs) * 1964-05-18 1967-09-28
US3479463A (en) * 1967-03-28 1969-11-18 Zenith Radio Corp Wave signal receiver
US3707603A (en) * 1969-12-29 1972-12-26 Rca Corp Fm stereophonic receiver detection apparatus and disabling means
CA1021852A (en) * 1970-02-25 1977-11-29 Louis Dorren Compatible four channel fm system
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
US3721766A (en) * 1970-11-16 1973-03-20 Motorola Inc Frequency multiplying circuit utilizing time gates and switching signals of differing phases
GB1377138A (en) * 1971-04-15 1974-12-11 Matsushita Electric Industrial Co Ltd Four channel arrangements
FR2163689B1 (cs) * 1971-12-16 1976-08-27 Matsushita Electric Industrial Co Ltd

Also Published As

Publication number Publication date
DE2348411C3 (de) 1980-04-03
JPS5315602B2 (cs) 1978-05-26
NL7313375A (cs) 1974-04-02
DE2348411A1 (de) 1974-04-18
DE2348411B2 (de) 1979-08-02
JPS4956503A (cs) 1974-06-01
FR2201581B1 (cs) 1976-11-19
GB1401562A (en) 1975-07-16
US3909539A (en) 1975-09-30
FR2201581A1 (cs) 1974-04-26

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