FR2295625A1 - Demodulateur quadriphonique ou stereophonique - Google Patents

Demodulateur quadriphonique ou stereophonique

Info

Publication number
FR2295625A1
FR2295625A1 FR7538546A FR7538546A FR2295625A1 FR 2295625 A1 FR2295625 A1 FR 2295625A1 FR 7538546 A FR7538546 A FR 7538546A FR 7538546 A FR7538546 A FR 7538546A FR 2295625 A1 FR2295625 A1 FR 2295625A1
Authority
FR
France
Prior art keywords
quadriphone
stereophonic demodulator
stereophonic
demodulator
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.)
Granted
Application number
FR7538546A
Other languages
English (en)
Other versions
FR2295625B1 (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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of FR2295625A1 publication Critical patent/FR2295625A1/fr
Application granted granted Critical
Publication of FR2295625B1 publication Critical patent/FR2295625B1/fr
Granted 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)
FR7538546A 1974-12-16 1975-12-16 Demodulateur quadriphonique ou stereophonique Granted FR2295625A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49144211A JPS589615B2 (ja) 1974-12-16 1974-12-16 Ｆｍ ステレオフクチヨウホウシキ

Publications (2)

Publication Number Publication Date
FR2295625A1 true FR2295625A1 (fr) 1976-07-16
FR2295625B1 FR2295625B1 (fr) 1981-05-29

Family

ID=15356807

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7538546A Granted FR2295625A1 (fr) 1974-12-16 1975-12-16 Demodulateur quadriphonique ou stereophonique

Country Status (8)

Country Link
US (1) US4037055A (fr)
JP (1) JPS589615B2 (fr)
AU (1) AU499504B2 (fr)
CA (1) CA1056465A (fr)
DE (1) DE2556056A1 (fr)
FR (1) FR2295625A1 (fr)
GB (1) GB1521550A (fr)
NL (1) NL7514560A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361771A1 (fr) * 1976-08-13 1978-03-10 Quadracast Systems Decodeur pour signal complexe de modulation de frequence

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5854691B2 (ja) * 1979-02-13 1983-12-06 株式会社日立製作所 ステレオ復調方式
US4392020A (en) * 1980-02-27 1983-07-05 Hitachi, Ltd. Stereo demodulation system for an FM stereo broadcast receiver
US4433433A (en) * 1981-05-15 1984-02-21 Trio Kabushiki Kaisha Sampling pulse forming circuit for FM stereo demodulator
JPS602123U (ja) * 1983-06-16 1985-01-09 今西金属工業株式会社 石油スト−ブの立炎防止装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077572A1 (fr) * 1969-12-29 1971-10-29 Rca Corp
FR2163689A1 (fr) * 1971-12-16 1973-07-27 Matsushita Electric Ind Co Ltd
FR2179032A1 (fr) * 1972-04-07 1973-11-16 Quadracast Systems
FR2266380A1 (fr) * 1974-03-28 1975-10-24 Motorola Inc

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3584154A (en) * 1968-06-17 1971-06-08 Clarence Hunter Mcshan Stereo multiplex decoding system with a phase locked loop switching signal control
US3708623A (en) * 1970-04-29 1973-01-02 Quadracast Syst Inc Compatible four channel fm system
US3934092A (en) * 1971-09-21 1976-01-20 General Electric Company Four channel stereophonic broadcasting system
US3881063A (en) * 1972-01-20 1975-04-29 Victor Company Of Japan System for selectively receiving either 4-channel or- 2-channel stereophonic broadcastings
US3902018A (en) * 1973-12-03 1975-08-26 Zenith Radio Corp Multiple channel fm stereo system employing am vestigial sideband subcarrier modulation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2077572A1 (fr) * 1969-12-29 1971-10-29 Rca Corp
FR2163689A1 (fr) * 1971-12-16 1973-07-27 Matsushita Electric Ind Co Ltd
FR2179032A1 (fr) * 1972-04-07 1973-11-16 Quadracast Systems
FR2266380A1 (fr) * 1974-03-28 1975-10-24 Motorola Inc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2361771A1 (fr) * 1976-08-13 1978-03-10 Quadracast Systems Decodeur pour signal complexe de modulation de frequence

Also Published As

Publication number Publication date
DE2556056A1 (de) 1976-07-01
JPS5169901A (en) 1976-06-17
US4037055A (en) 1977-07-19
JPS589615B2 (ja) 1983-02-22
FR2295625B1 (fr) 1981-05-29
GB1521550A (en) 1978-08-16
AU499504B2 (en) 1979-04-26
AU8738175A (en) 1977-06-16
CA1056465A (fr) 1979-06-12
NL7514560A (nl) 1976-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse