JPS5243683B2 - - Google Patents

Info

Publication number
JPS5243683B2
JPS5243683B2 JP731541A JP154173A JPS5243683B2 JP S5243683 B2 JPS5243683 B2 JP S5243683B2 JP 731541 A JP731541 A JP 731541A JP 154173 A JP154173 A JP 154173A JP S5243683 B2 JPS5243683 B2 JP S5243683B2
Authority
JP
Japan
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
JP731541A
Other languages
Japanese (ja)
Other versions
JPS4991201A (en]
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 filed Critical
Priority to JP731541A priority Critical patent/JPS5243683B2/ja
Priority to DE2365049A priority patent/DE2365049A1/de
Priority to US429114A priority patent/US3911232A/en
Publication of JPS4991201A publication Critical patent/JPS4991201A/ja
Publication of JPS5243683B2 publication Critical patent/JPS5243683B2/ja
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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/00992—Circuits for stereophonic or quadraphonic recording or reproducing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present
    • 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)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
JP731541A 1972-12-29 1972-12-29 Expired JPS5243683B2 (en])

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP731541A JPS5243683B2 (en]) 1972-12-29 1972-12-29
DE2365049A DE2365049A1 (de) 1972-12-29 1973-12-28 Demodulationsanordnung fuer winkelmodulierte signale, die von einer mehrkanalschallplatte aufgenommen werden
US429114A US3911232A (en) 1972-12-29 1973-12-28 Demodulation system for angle-modulated wave picked up from a multi-channel record disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP731541A JPS5243683B2 (en]) 1972-12-29 1972-12-29

Publications (2)

Publication Number Publication Date
JPS4991201A JPS4991201A (en]) 1974-08-31
JPS5243683B2 true JPS5243683B2 (en]) 1977-11-01

Family

ID=11504371

Family Applications (1)

Application Number Title Priority Date Filing Date
JP731541A Expired JPS5243683B2 (en]) 1972-12-29 1972-12-29

Country Status (3)

Country Link
US (1) US3911232A (en])
JP (1) JPS5243683B2 (en])
DE (1) DE2365049A1 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225446U (en]) * 1985-07-29 1987-02-16

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL162812C (nl) * 1974-03-12 1980-06-16 Matsushita Electric Ind Co Ltd Vierkanalige weergeefinrichting voor het weergeven van grammofoonplaten.
US4096360A (en) * 1975-09-27 1978-06-20 Victor Company Of Japan, Ltd. Multichannel record disc reproducing system
US4152550A (en) * 1976-10-21 1979-05-01 Victor Company Of Japan, Ltd. Apparatus for reproducing a multichannel record disc
JPS5793704A (en) * 1980-12-03 1982-06-10 Alps Electric Co Ltd Fm demodulation circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3564434A (en) * 1968-07-29 1971-02-16 Signetics Corp Integrated frequency selective circuit and demodulator including phase locked loop
CA938560A (en) * 1969-11-28 1973-12-18 Victor Company Of Japan System for recording and/or reproducing four channel signals on a record disc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225446U (en]) * 1985-07-29 1987-02-16

Also Published As

Publication number Publication date
US3911232A (en) 1975-10-07
DE2365049A1 (de) 1974-07-11
JPS4991201A (en]) 1974-08-31

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