FR2382814A1 - Circuit generateur de tension d'accord pour recepteur de television - Google Patents
Circuit generateur de tension d'accord pour recepteur de televisionInfo
- Publication number
- FR2382814A1 FR2382814A1 FR7805227A FR7805227A FR2382814A1 FR 2382814 A1 FR2382814 A1 FR 2382814A1 FR 7805227 A FR7805227 A FR 7805227A FR 7805227 A FR7805227 A FR 7805227A FR 2382814 A1 FR2382814 A1 FR 2382814A1
- Authority
- FR
- France
- Prior art keywords
- television receiver
- tuning
- voltage generator
- generator circuit
- tuning voltage
- 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- Withdrawn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
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/16—Tuning without displacement of reactive element, e.g. by varying permeability
- H03J3/18—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance
- H03J3/185—Tuning without displacement of reactive element, e.g. by varying permeability by discharge tube or semiconductor device simulating variable reactance with varactors, i.e. voltage variable reactive diodes
-
- 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
- H03J5/0254—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 transfered to a D/A converter
- H03J5/0263—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 transfered to a D/A converter the digital values being held in an auxiliary non erasable memory
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
L'invention concerne l'accord des récepteurs de télévision. Le circuit de l'invention est destiné à éviter l'accord d'un récepteur de télévision sur les canaux situés entre les bandes VHF et UHF. Dans ce but, un interrupteur 9 se ferme au moment où la tension présente sur le curseur du potentiomètre 2 atteint un certain seuil. La chute de tension resultante dans la résistance 4 décale la tension d'accord appliquée sur la borne 10, ce qui fait passer instantanément du haut de la bande VHF au bas de la bande UHF. Application aux récepteurs de télévision.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT67461/77A IT1071589B (it) | 1977-03-03 | 1977-03-03 | Disposizione per generare una tensione di sintonia |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2382814A1 true FR2382814A1 (fr) | 1978-09-29 |
Family
ID=11302575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7805227A Withdrawn FR2382814A1 (fr) | 1977-03-03 | 1978-02-23 | Circuit generateur de tension d'accord pour recepteur de television |
Country Status (6)
Country | Link |
---|---|
US (1) | US4197503A (fr) |
DE (1) | DE2808673A1 (fr) |
FR (1) | FR2382814A1 (fr) |
GB (1) | GB1579000A (fr) |
IT (1) | IT1071589B (fr) |
NL (1) | NL7802296A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036335A2 (fr) * | 1980-03-19 | 1981-09-23 | Sanyo Electric Co., Ltd. | Appareil sélecteur de stations |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3025358A1 (de) * | 1980-07-04 | 1982-01-21 | Deutsche Itt Industries Gmbh, 7800 Freiburg | Regelsystem zum einstellen einer physikalischen groesse |
JPS623973Y2 (fr) * | 1980-10-15 | 1987-01-29 | ||
US5479155A (en) * | 1988-12-05 | 1995-12-26 | Prince Corporation | Vehicle accessory trainable transmitter |
US5475366A (en) * | 1988-12-05 | 1995-12-12 | Prince Corporation | Electrical control system for vehicle options |
US5614885A (en) * | 1988-12-05 | 1997-03-25 | Prince Corporation | Electrical control system for vehicle options |
US5627529A (en) * | 1994-03-11 | 1997-05-06 | Prince Corporation | Vehicle control system with trainable transceiver |
US5903226A (en) * | 1993-03-15 | 1999-05-11 | Prince Corporation | Trainable RF system for remotely controlling household appliances |
US5699054A (en) * | 1995-05-19 | 1997-12-16 | Prince Corporation | Trainable transceiver including a dynamically tunable antenna |
US5699055A (en) * | 1995-05-19 | 1997-12-16 | Prince Corporation | Trainable transceiver and method for learning an activation signal that remotely actuates a device |
US5686903A (en) * | 1995-05-19 | 1997-11-11 | Prince Corporation | Trainable RF transceiver |
US5661804A (en) * | 1995-06-27 | 1997-08-26 | Prince Corporation | Trainable transceiver capable of learning variable codes |
US5854593A (en) * | 1996-07-26 | 1998-12-29 | Prince Corporation | Fast scan trainable transmitter |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3449749A (en) * | 1968-06-24 | 1969-06-10 | William J Mcevoy | Electromagnetic surveillance system |
DE1801290A1 (de) * | 1968-03-28 | 1969-10-16 | Kapsch Telephon Telegraph | Auf distante Frequenzbaender abstimmbarer Schwingungskreis,insbesondere fuer Kurzwellen-Empfaenger |
US3646450A (en) * | 1969-08-13 | 1972-02-29 | Zenith Radio Corp | Voltage-controlled plural-band tuner for a wave signal receiver |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1801290U (de) | 1959-09-10 | 1959-12-03 | Elektroteile G M B H | Einphasenwechselstrommagnet mit hubbegrenzung fuer den anker. |
JPS5234162B2 (fr) * | 1972-04-27 | 1977-09-01 | ||
US3893049A (en) * | 1974-03-25 | 1975-07-01 | Motorola Inc | Electronic tuning system for television receivers |
US3961267A (en) * | 1974-11-01 | 1976-06-01 | Warwick Electronics Inc. | Channel selecting control system for television tuner including unused channel skip system |
US3968444A (en) * | 1974-11-11 | 1976-07-06 | Texas Instruments Incorporated | Skip band tuner |
-
1977
- 1977-03-03 IT IT67461/77A patent/IT1071589B/it active
-
1978
- 1978-02-23 FR FR7805227A patent/FR2382814A1/fr not_active Withdrawn
- 1978-02-23 GB GB7241/78A patent/GB1579000A/en not_active Expired
- 1978-03-01 DE DE19782808673 patent/DE2808673A1/de not_active Withdrawn
- 1978-03-02 NL NL7802296A patent/NL7802296A/xx not_active Application Discontinuation
- 1978-03-03 US US05/883,236 patent/US4197503A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1801290A1 (de) * | 1968-03-28 | 1969-10-16 | Kapsch Telephon Telegraph | Auf distante Frequenzbaender abstimmbarer Schwingungskreis,insbesondere fuer Kurzwellen-Empfaenger |
US3449749A (en) * | 1968-06-24 | 1969-06-10 | William J Mcevoy | Electromagnetic surveillance system |
US3646450A (en) * | 1969-08-13 | 1972-02-29 | Zenith Radio Corp | Voltage-controlled plural-band tuner for a wave signal receiver |
Non-Patent Citations (1)
Title |
---|
EXBK/74 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0036335A2 (fr) * | 1980-03-19 | 1981-09-23 | Sanyo Electric Co., Ltd. | Appareil sélecteur de stations |
EP0036335A3 (en) * | 1980-03-19 | 1982-01-27 | Sanyo Electric Co., Ltd. | Station selecting apparatus |
Also Published As
Publication number | Publication date |
---|---|
US4197503A (en) | 1980-04-08 |
IT1071589B (it) | 1985-04-10 |
DE2808673A1 (de) | 1978-09-07 |
GB1579000A (en) | 1980-11-12 |
NL7802296A (nl) | 1978-09-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RE | Withdrawal of published application |