FR2425183A1 - Codeur stereophonique et son procede de fabrication - Google Patents

Codeur stereophonique et son procede de fabrication

Info

Publication number
FR2425183A1
FR2425183A1 FR7901310A FR7901310A FR2425183A1 FR 2425183 A1 FR2425183 A1 FR 2425183A1 FR 7901310 A FR7901310 A FR 7901310A FR 7901310 A FR7901310 A FR 7901310A FR 2425183 A1 FR2425183 A1 FR 2425183A1
Authority
FR
France
Prior art keywords
stereophonic
manufacturing process
time intervals
stereophonic encoder
successive
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
FR7901310A
Other languages
English (en)
Other versions
FR2425183B1 (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.)
Rai Radiotelevisione Italiana SpA
Original Assignee
Rai Radiotelevisione Italiana SpA
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 Rai Radiotelevisione Italiana SpA filed Critical Rai Radiotelevisione Italiana SpA
Publication of FR2425183A1 publication Critical patent/FR2425183A1/fr
Application granted granted Critical
Publication of FR2425183B1 publication Critical patent/FR2425183B1/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
    • H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
    • H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
    • H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
    • H04H20/48—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

PROCEDE POUR LA REALISATION D'UN CODEUR STEREOPHONIQUE, CARACTERISE EN CE QU'IL CONSISTE A UTILISER LES SIGNAUX S1 ET S2, DEJA PREEMPHATISES ET RELATIFS AU CANAL GAUCHE ET AU CANAL DROIT D'UN SYSTEME STEREOPHONIQUE, EN MODIFIANT ET COMBINANT LEURS NIVEAUX PENDANT DES INTERVALLES DE TEMPS SUCCESSIFS, DE FACON A FORMER UNE FORME D'ONDE DEPOURVUE D'HARMONIQUES, JUSQU'A LA SIXIEME INCLUSE; CE RESULTAT ETANT OBTENU PAR DES COMMUTATIONS QUI ONT LIEU A DES INTERVALLES DE TEMPS EGAUX A 18 F, F ETANT LA FREQUENCE DE LA SOUSPORTEUSE, DE TELLE FACON QUE, DANS LES INTERVALLES SUCCESSIFS, ON ENGENDRE UN SIGNAL S PROPORTIONNEL AUX VALEURS SUIVANTES : (CF DESSIN DANS BOPI) CES VALEURS ETANT ENSUITE REPETEES DANS L'ORDRE INVERSE, ENCORE ENSUITE DANS LE MEME ORDRE, ET AINSI DE SUITE.
FR7901310A 1978-05-05 1979-01-19 Codeur stereophonique et son procede de fabrication Granted FR2425183A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT68031/78A IT1159657B (it) 1978-05-05 1978-05-05 Codificatore stereofonico utilizzante un sistema di commutazione multilivello per la formazione del segnale stereofonico

Publications (2)

Publication Number Publication Date
FR2425183A1 true FR2425183A1 (fr) 1979-11-30
FR2425183B1 FR2425183B1 (fr) 1984-05-04

Family

ID=11307325

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901310A Granted FR2425183A1 (fr) 1978-05-05 1979-01-19 Codeur stereophonique et son procede de fabrication

Country Status (6)

Country Link
US (1) US4264784A (fr)
DE (1) DE2850555A1 (fr)
FR (1) FR2425183A1 (fr)
GB (1) GB2020519B (fr)
IT (1) IT1159657B (fr)
NL (1) NL188005C (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS592216B2 (ja) * 1980-11-28 1984-01-17 ヤマハ株式会社 Ｆｍステレオ復調回路
DE3114761A1 (de) * 1981-04-11 1982-10-28 Philips Patentverwaltung Gmbh, 2000 Hamburg Demodulatorschaltung
US4433433A (en) * 1981-05-15 1984-02-21 Trio Kabushiki Kaisha Sampling pulse forming circuit for FM stereo demodulator
NL8104668A (nl) * 1981-10-14 1983-05-02 Philips Nv Vermenigvuldigschakeling voor stereo-decoders.
JPS59182626A (ja) * 1983-03-31 1984-10-17 Toshiba Corp スイッチング回路
DE3337653A1 (de) * 1983-10-17 1985-05-02 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Verfahren zur signaluebertragung und einrichtung zur durchfuehrung des verfahrens
WO1987001252A1 (fr) * 1985-08-12 1987-02-26 Sound Sender, Inc. Adaptateur pour autoradio
DE4041852C2 (de) * 1990-12-24 1995-05-04 Telefunken Microelectron Integrierter Stereodekoder mit Schaltungsanordnung zur Erzeugung eines digitalen Schaltsignals
JP2828872B2 (ja) * 1993-06-29 1998-11-25 ヤマハ株式会社 共鳴音信号形成装置
DE19915510C1 (de) 1999-04-07 2000-07-27 Preh Elektro Feinmechanik Verfahren zur Herstellung von aus Metall bestehenden Gehäuse- oder Stellteilen
WO2005091493A1 (fr) 2004-03-12 2005-09-29 Rf Magic, Inc. Melangeur et syntoniseur a suppression d'harmoniques

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875091A (en) * 1960-02-10 1961-08-16 Cable Belt Ltd Improvements in or relating to plate belt conveyors
US3789323A (en) * 1972-05-19 1974-01-29 Sigmatek Inc Multiple input signal modulator and method therefor
US3902019A (en) * 1974-06-14 1975-08-26 Rockwell International Corp Fm broadcast exciter apparatus
US3962551A (en) * 1974-03-28 1976-06-08 Motorola, Inc. Methods and systems for providing stereo decoding signals

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1095331B (de) * 1959-05-02 1960-12-22 Telefunken Gmbh Stereophonisches Rundfunksystem
US3711652A (en) * 1971-03-10 1973-01-16 Gen Electric Monolithic stereo decoder with balanced decoder operation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB875091A (en) * 1960-02-10 1961-08-16 Cable Belt Ltd Improvements in or relating to plate belt conveyors
US3789323A (en) * 1972-05-19 1974-01-29 Sigmatek Inc Multiple input signal modulator and method therefor
US3962551A (en) * 1974-03-28 1976-06-08 Motorola, Inc. Methods and systems for providing stereo decoding signals
US3902019A (en) * 1974-06-14 1975-08-26 Rockwell International Corp Fm broadcast exciter apparatus

Also Published As

Publication number Publication date
GB2020519B (en) 1982-04-07
FR2425183B1 (fr) 1984-05-04
NL188005C (nl) 1992-03-02
NL188005B (nl) 1991-10-01
US4264784A (en) 1981-04-28
NL7901323A (nl) 1979-11-07
DE2850555C2 (fr) 1988-06-16
GB2020519A (en) 1979-11-14
DE2850555A1 (de) 1979-11-08
IT7868031A0 (it) 1978-05-05
IT1159657B (it) 1987-03-04

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