ES480533A1 - Un descodificador estereo perfeccionado. - Google Patents
Un descodificador estereo perfeccionado.Info
- Publication number
- ES480533A1 ES480533A1 ES480533A ES480533A ES480533A1 ES 480533 A1 ES480533 A1 ES 480533A1 ES 480533 A ES480533 A ES 480533A ES 480533 A ES480533 A ES 480533A ES 480533 A1 ES480533 A1 ES 480533A1
- Authority
- ES
- Spain
- Prior art keywords
- signal
- hand
- pilot
- phase
- stereo
- 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
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/22—Homodyne or synchrodyne circuits
- H03D1/2209—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders
- H03D1/2236—Decoders for simultaneous demodulation and decoding of signals composed of a sum-signal and a suppressed carrier, amplitude modulated by a difference signal, e.g. stereocoders using a phase locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
Un descodificador estéreo perfeccionado para una señal estereofónica múltiplex que comprende un separador de señal múltiple que tiene una entrada de señal y una entrada de portadora estando acoplada la entrad de señal para reducir una señal piloto de una señal múltiplex a una entrada del descodificador de señal estereofónica a través de un circuito de eliminación de señal piloto y que comprende también, conectado a la entrada de portadora del separador de señal múltiple, un oscilador de fase sincronizada que tiene un detector de fase que está incluido en un bucle de reacción y provisto de un paso de entrada de referencia, caracterizado porque el paso de entrada de referencia comprende un amplificador diferencial del cual está conectada una primera entrada de referencia a la mencionada entrada del decodificador de señal estereofónica y está conectada una segunda entrada de referencia a una salida del circuito de eliminación de señal piloto.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7805292,A NL174312C (nl) | 1978-05-17 | 1978-05-17 | Stereodecoder met 19khz-piloot onderdrukking en verbeterende oscillatie-fase-vergrendeling. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES480533A1 true ES480533A1 (es) | 1979-12-16 |
Family
ID=19830845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES480533A Expired ES480533A1 (es) | 1978-05-17 | 1979-05-14 | Un descodificador estereo perfeccionado. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4249038A (es) |
| JP (1) | JPS54150001A (es) |
| AU (1) | AU525875B2 (es) |
| DE (1) | DE2919296C2 (es) |
| ES (1) | ES480533A1 (es) |
| FR (1) | FR2426368A1 (es) |
| GB (1) | GB2021361B (es) |
| HK (1) | HK54183A (es) |
| IT (1) | IT1113992B (es) |
| NL (1) | NL174312C (es) |
| SE (1) | SE432040B (es) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344038A (en) * | 1980-05-27 | 1982-08-10 | The Magnavox Company | Low frequency tone detector |
| DE3446078A1 (de) * | 1984-12-18 | 1986-06-19 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Fm-stereoempfaenger |
| US4972482A (en) * | 1987-09-18 | 1990-11-20 | Sanyo Electric Co., Ltd. | Fm stereo demodulator |
| JPH01160976U (es) * | 1988-04-28 | 1989-11-08 | ||
| KR960014217B1 (ko) * | 1993-01-21 | 1996-10-14 | 삼성전자 주식회사 | 스테레오와 듀얼 음성 인식 회로 |
| FR3088787B1 (fr) | 2018-11-21 | 2020-11-13 | Continental Automotive France | Procédé de démodulation d’un signal stéréophonique |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2964712A (en) * | 1959-09-29 | 1960-12-13 | Gulf Research Development Co | Automatically tuned notch filter |
| US3133993A (en) * | 1960-04-18 | 1964-05-19 | Zenith Radio Corp | Stereo fm transmission system |
| DE2006397A1 (de) * | 1969-02-18 | 1970-10-15 | PGH Tonfunk, Ermsleben | Patentwesen Ost-Berlin WPl37937 Schaltungsanordnung zur Abtrennung eines schmalen Frequenzbandes aus einem breiteren Frequenzband, insbesondere zur Abtrennung der Pilotfrequenz aus dem Multiplexsignal in Stereo-Decodern |
| CA997000A (en) * | 1969-12-29 | 1976-09-14 | Allen L. Limberg | Multiplex decoding system |
| JPS52119852A (en) * | 1976-04-01 | 1977-10-07 | Sony Corp | Pll |
| US4160217A (en) * | 1976-04-01 | 1979-07-03 | Sony Corporation | Phase locked loop circuit |
| JPS52127103A (en) * | 1976-04-19 | 1977-10-25 | Pioneer Electronic Corp | Circuit for generating pilot cancel signal in mpx demodulator |
| JPS5335302A (en) * | 1976-09-13 | 1978-04-01 | Hitachi Ltd | Cancel circuit for mpx decoder pilot signal |
| JPS5377102A (en) * | 1976-12-20 | 1978-07-08 | Nippon Gakki Seizo Kk | Fm stereo demodulating circuit |
-
1978
- 1978-05-17 NL NLAANVRAGE7805292,A patent/NL174312C/xx not_active IP Right Cessation
-
1979
- 1979-05-07 US US06/036,470 patent/US4249038A/en not_active Expired - Lifetime
- 1979-05-11 AU AU47008/79A patent/AU525875B2/en not_active Ceased
- 1979-05-12 DE DE2919296A patent/DE2919296C2/de not_active Expired
- 1979-05-14 GB GB7916638A patent/GB2021361B/en not_active Expired
- 1979-05-14 SE SE7904181A patent/SE432040B/sv not_active IP Right Cessation
- 1979-05-14 ES ES480533A patent/ES480533A1/es not_active Expired
- 1979-05-14 JP JP5902379A patent/JPS54150001A/ja active Granted
- 1979-05-14 IT IT22674/79A patent/IT1113992B/it active
- 1979-05-16 FR FR7912483A patent/FR2426368A1/fr active Granted
-
1983
- 1983-11-10 HK HK541/83A patent/HK54183A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2021361B (en) | 1982-04-07 |
| FR2426368A1 (fr) | 1979-12-14 |
| GB2021361A (en) | 1979-11-28 |
| JPS54150001A (en) | 1979-11-24 |
| DE2919296A1 (de) | 1979-11-22 |
| FR2426368B1 (es) | 1985-02-15 |
| IT7922674A0 (it) | 1979-05-14 |
| HK54183A (en) | 1983-11-18 |
| DE2919296C2 (de) | 1983-06-01 |
| IT1113992B (it) | 1986-01-27 |
| NL7805292A (nl) | 1979-11-20 |
| AU525875B2 (en) | 1982-12-02 |
| SE432040B (sv) | 1984-03-12 |
| US4249038A (en) | 1981-02-03 |
| NL174312C (nl) | 1984-05-16 |
| AU4700879A (en) | 1979-11-22 |
| NL174312B (nl) | 1983-12-16 |
| SE7904181L (sv) | 1979-11-18 |
| JPS6227580B2 (es) | 1987-06-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Patent lapsed |
Effective date: 19960506 |