FR2231065B1 - - Google Patents

Info

Publication number
FR2231065B1
FR2231065B1 FR7417623A FR7417623A FR2231065B1 FR 2231065 B1 FR2231065 B1 FR 2231065B1 FR 7417623 A FR7417623 A FR 7417623A FR 7417623 A FR7417623 A FR 7417623A FR 2231065 B1 FR2231065 B1 FR 2231065B1
Authority
FR
France
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
FR7417623A
Other versions
FR2231065A1 (fr
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
Priority claimed from JP6193673U external-priority patent/JPS5136481Y2/ja
Priority claimed from JP6193773U external-priority patent/JPS5123285Y2/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2231065A1 publication Critical patent/FR2231065A1/fr
Application granted granted Critical
Publication of FR2231065B1 publication Critical patent/FR2231065B1/fr
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)
  • Stereo-Broadcasting Methods (AREA)
  • Stereophonic System (AREA)
FR7417623A 1973-05-25 1974-05-21 Expired FR2231065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6193673U JPS5136481Y2 (fr) 1973-05-25 1973-05-25
JP6193773U JPS5123285Y2 (fr) 1973-05-25 1973-05-25

Publications (2)

Publication Number Publication Date
FR2231065A1 FR2231065A1 (fr) 1974-12-20
FR2231065B1 true FR2231065B1 (fr) 1978-06-16

Family

ID=26403026

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7417623A Expired FR2231065B1 (fr) 1973-05-25 1974-05-21

Country Status (6)

Country Link
US (1) US3911231A (fr)
AU (1) AU481062B2 (fr)
CA (1) CA1005350A (fr)
DE (1) DE2425191A1 (fr)
FR (1) FR2231065B1 (fr)
NL (2) NL165027B (fr)

Families Citing this family (1)

* 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.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3843850A (en) * 1970-06-26 1974-10-22 Victor Co Ltd Four channel record reproducing apparatus with muting of speakers not used for stereo or monaural records
US3711652A (en) * 1971-03-10 1973-01-16 Gen Electric Monolithic stereo decoder with balanced decoder operation
JPS5524320B2 (fr) * 1972-05-24 1980-06-27
US3825697A (en) * 1973-07-27 1974-07-23 Gen Motors Corp Phase-lock-loop fm-stereo decoder including stereophonic/monophonic blend system for reducing audio distortion

Also Published As

Publication number Publication date
FR2231065A1 (fr) 1974-12-20
DE2425191A1 (de) 1974-12-19
AU481062B2 (en) 1977-02-17
AU6923474A (en) 1975-11-27
US3911231A (en) 1975-10-07
NL7406743A (fr) 1974-11-27
NL165027C (nl)
NL165027B (nl) 1980-09-15
CA1005350A (en) 1977-02-15

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Legal Events

Date Code Title Description
ST Notification of lapse