FR2418592A1 - Dispositif de commande de synthese de frequence - Google Patents
Dispositif de commande de synthese de frequenceInfo
- Publication number
- FR2418592A1 FR2418592A1 FR7904428A FR7904428A FR2418592A1 FR 2418592 A1 FR2418592 A1 FR 2418592A1 FR 7904428 A FR7904428 A FR 7904428A FR 7904428 A FR7904428 A FR 7904428A FR 2418592 A1 FR2418592 A1 FR 2418592A1
- Authority
- FR
- France
- Prior art keywords
- frequency
- receiver
- memory system
- divider
- system controlling
- 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
Links
- 230000015654 memory Effects 0.000 title abstract 4
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/193—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number the frequency divider/counter comprising a commutable pre-divider, e.g. a two modulus divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
- H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
- H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Superheterodyne Receivers (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
L'invention concerne un dispositif de commande de fréquence destiné à sélectionner des canaux dans un équipement de transmission. Un canal est sélectionné en réglant un diviseur variable à partir d'informations que contient une mémoire programmable. Un certain nombre de mémoires contiennent chacune des informations de réglage pour un groupe de canaux différents. Cette disposition permet de choisir, par exemple, un système particulier de télévision par le choix de la mémoire programmable appropriée. L'invention s'applique notamment aux récepteurs de télévision adaptables à plusieurs systèmes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB714078 | 1978-02-22 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2418592A1 true FR2418592A1 (fr) | 1979-09-21 |
FR2418592B1 FR2418592B1 (fr) | 1985-02-15 |
Family
ID=9827385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7904428A Granted FR2418592A1 (fr) | 1978-02-22 | 1979-02-21 | Dispositif de commande de synthese de frequence |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS54125910A (fr) |
AR (1) | AR224730A1 (fr) |
BE (1) | BE874367A (fr) |
BR (1) | BR7901178A (fr) |
DE (1) | DE2906059A1 (fr) |
ES (1) | ES477973A1 (fr) |
FI (1) | FI790564A (fr) |
FR (1) | FR2418592A1 (fr) |
IT (1) | IT1193179B (fr) |
NL (1) | NL7901412A (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3627768A1 (de) * | 1986-08-16 | 1988-02-18 | Standard Elektrik Lorenz Ag | Einrichtung fuer die auswahl bestimmter empfangskanaele in einem auf empfangskanaele abstimmbaren empfangsgeraet der unterhaltungselektronik |
DE3634246A1 (de) * | 1986-10-08 | 1988-04-21 | Grundig Emv | Abstimmsystem, insbesondere fuer videogeneratoren und fernsehempfaenger |
DE3830921A1 (de) * | 1988-09-12 | 1990-03-22 | Grundig Emv | Anordnung zur anpassung eines empfangsgeraetes an verschiedene kanalraster |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328324A1 (fr) * | 1975-10-16 | 1977-05-13 | Indesit | Agencement de circuits de selection d'une frequence de signaux pouvant etre recus dans un poste recepteur |
-
1979
- 1979-02-16 DE DE19792906059 patent/DE2906059A1/de not_active Withdrawn
- 1979-02-20 FI FI790564A patent/FI790564A/fi unknown
- 1979-02-21 IT IT20399/79A patent/IT1193179B/it active
- 1979-02-21 FR FR7904428A patent/FR2418592A1/fr active Granted
- 1979-02-22 ES ES477973A patent/ES477973A1/es not_active Expired
- 1979-02-22 JP JP1911779A patent/JPS54125910A/ja active Pending
- 1979-02-22 BE BE193631A patent/BE874367A/fr not_active IP Right Cessation
- 1979-02-22 NL NL7901412A patent/NL7901412A/xx not_active Application Discontinuation
- 1979-02-22 BR BR7901178A patent/BR7901178A/pt unknown
- 1979-02-22 AR AR275587A patent/AR224730A1/es active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2328324A1 (fr) * | 1975-10-16 | 1977-05-13 | Indesit | Agencement de circuits de selection d'une frequence de signaux pouvant etre recus dans un poste recepteur |
Also Published As
Publication number | Publication date |
---|---|
FR2418592B1 (fr) | 1985-02-15 |
FI790564A (fi) | 1979-08-23 |
BE874367A (fr) | 1979-06-18 |
IT7920399A0 (it) | 1979-02-21 |
DE2906059A1 (de) | 1979-08-30 |
NL7901412A (nl) | 1979-08-24 |
BR7901178A (pt) | 1979-10-09 |
AR224730A1 (es) | 1982-01-15 |
IT1193179B (it) | 1988-06-02 |
JPS54125910A (en) | 1979-09-29 |
ES477973A1 (es) | 1979-10-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |