FR2440652A1 - Recepteur a modulation de frequence equipe d'un dispositif chercheur de stations - Google Patents
Recepteur a modulation de frequence equipe d'un dispositif chercheur de stationsInfo
- Publication number
- FR2440652A1 FR2440652A1 FR7924238A FR7924238A FR2440652A1 FR 2440652 A1 FR2440652 A1 FR 2440652A1 FR 7924238 A FR7924238 A FR 7924238A FR 7924238 A FR7924238 A FR 7924238A FR 2440652 A1 FR2440652 A1 FR 2440652A1
- Authority
- FR
- France
- Prior art keywords
- station
- searcher device
- frequency modulation
- frequency discriminator
- station searcher
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/18—Automatic scanning over a band of frequencies
- H03J7/20—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element
- H03J7/24—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes
- H03J7/26—Automatic scanning over a band of frequencies where the scanning is accomplished by varying the electrical characteristics of a non-mechanically adjustable element using varactors, i.e. voltage variable reactive diodes in which an automatic frequency control circuit is brought into action after the scanning action has been stopped
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
RECEPTEUR A MODULATION DE FREQUENCE EQUIPE D'UN DISPOSITIF CHERCHEUR DE STATIONS, D'UN DISPOSITIF D'ACTIONNEMENT POUR LA MISE EN ACTIVITE DU DISPOSITIF CHERCHEUR DE STATIONS, D'UN DISCRIMINATEUR DE FREQUENCE ET D'UN GENERATEUR D'IMPULSIONS D'ARRET A SEUIL QUI EST CONNECTE A UNE SORTIE DU DISCRIMINATEUR DE FREQUENCE ET QUI, LORS D'UN DEPASSEMENT DE SA TENSION DE SEUIL PAR LA TENSION DE SORTIE DU DISCRIMINATEUR DE FREQUENCE, FOURNIT UNE IMPULSION D'ARRET SERVANT A RENDRE INACTIF LE DISPOSITIF CHERCHEUR DE STATIONS, LA SENSIBILITE DE DEMODULATION DU DISCRIMINATEUR DE FREQUENCE ETANT AMENEE D'UN NIVEAU MAXIMUM A UN NIVEAU MINIMUM EN VUE D'EMPECHER LA PRODUCTION DE FAUSSES IMPULSIONS D'ARRET A L'OCCASION D'UN DEPASSEMENT DE LA TENSION DE SEUIL PAR DES SIGNAUX AUDIO DETECTES ET, LORS DE LA MISE EN ACTIVITE DU DISPOSITIF CHERCHEUR DE STATIONS, LA SENSIBILITE DE DETECTION DU DISPOSITIF CHERCHEUR DE STATIONS ETANT AMENEE DU NIVEAU MINIMUM AU NIVEAU MAXIMUM EN VUE DE RENDRE POSSIBLE UN ACCORD SUR DES EMETTEURS FAIBLES ETOU PROCHES L'UN DE L'AUTRE PENDANT LE PROCESSUS DE RECHERCHE DE STATIONS. APPLICATION : TRANSMISSION PAR MODULATION DE FREQUENCE.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7810859A NL7810859A (nl) | 1978-11-01 | 1978-11-01 | Fm-ontvanger met zenderzoekinrichting. |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2440652A1 true FR2440652A1 (fr) | 1980-05-30 |
Family
ID=19831817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7924238A Withdrawn FR2440652A1 (fr) | 1978-11-01 | 1979-09-28 | Recepteur a modulation de frequence equipe d'un dispositif chercheur de stations |
Country Status (6)
Country | Link |
---|---|
US (1) | US4253195A (fr) |
JP (1) | JPS5563119A (fr) |
DE (1) | DE2943517A1 (fr) |
FR (1) | FR2440652A1 (fr) |
GB (1) | GB2035736B (fr) |
NL (1) | NL7810859A (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE33157E (en) * | 1983-12-27 | 1990-01-30 | Motorola, Inc. | Null initiated method and system for monitoring a priority channel |
US5125105A (en) * | 1989-11-30 | 1992-06-23 | Ford Motor Company | High-quality reception indicating circuit for fm receivers |
US5600805A (en) * | 1992-06-15 | 1997-02-04 | International Business Machines Corporation | Pass-through for I/O channel subsystem call instructions for accessing shared resources in a computer system having a plurality of operating systems |
DE4311933A1 (de) * | 1993-04-10 | 1994-10-13 | Blaupunkt Werke Gmbh | Schaltungsanordnung zur Erzeugung eines Stopp-Signals für einen Sendersuchlauf |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1251389B (fr) * | 1967-10-05 | |||
DE2320530A1 (de) * | 1973-04-21 | 1974-11-07 | Blaupunkt Werke Gmbh | Elektronische sendersuchlaufautomatik fuer einen rundfunkempfaenger |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2652486A (en) * | 1949-07-22 | 1953-09-15 | Gen Motors Corp | Signal seeking tuner |
US2764675A (en) * | 1950-01-28 | 1956-09-25 | Gen Motors Corp | Signal actuated tuner selective over noise level |
US2915625A (en) * | 1953-08-25 | 1959-12-01 | Gen Electric | Scan tuning receiver |
US3020405A (en) * | 1954-12-08 | 1962-02-06 | Gen Motors Corp | Radio sensitivity control |
DE1281501B (de) * | 1967-08-31 | 1968-10-31 | Blaupunkt Werke Gmbh | UEberlagerungsempfaenger mit einer elektronischen Sendersuchlaufautomatik |
US3665319A (en) * | 1970-12-29 | 1972-05-23 | Gen Electric | Station disengagement and sensitivity circuit for scan tuned radio receivers |
-
1978
- 1978-11-01 NL NL7810859A patent/NL7810859A/nl not_active Application Discontinuation
-
1979
- 1979-09-28 FR FR7924238A patent/FR2440652A1/fr not_active Withdrawn
- 1979-10-22 US US06/086,921 patent/US4253195A/en not_active Expired - Lifetime
- 1979-10-27 DE DE19792943517 patent/DE2943517A1/de not_active Withdrawn
- 1979-10-29 GB GB7937352A patent/GB2035736B/en not_active Expired
- 1979-10-30 JP JP13941079A patent/JPS5563119A/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1251389B (fr) * | 1967-10-05 | |||
DE2320530A1 (de) * | 1973-04-21 | 1974-11-07 | Blaupunkt Werke Gmbh | Elektronische sendersuchlaufautomatik fuer einen rundfunkempfaenger |
Non-Patent Citations (1)
Title |
---|
EXBK/75 * |
Also Published As
Publication number | Publication date |
---|---|
NL7810859A (nl) | 1980-05-06 |
DE2943517A1 (de) | 1980-05-14 |
US4253195A (en) | 1981-02-24 |
GB2035736A (en) | 1980-06-18 |
JPS5563119A (en) | 1980-05-13 |
GB2035736B (en) | 1982-12-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |