FR2386216A1 - Circuit electrique de division de frequence pour reglage d'accord d'un recepteur de television - Google Patents
Circuit electrique de division de frequence pour reglage d'accord d'un recepteur de televisionInfo
- Publication number
- FR2386216A1 FR2386216A1 FR7808964A FR7808964A FR2386216A1 FR 2386216 A1 FR2386216 A1 FR 2386216A1 FR 7808964 A FR7808964 A FR 7808964A FR 7808964 A FR7808964 A FR 7808964A FR 2386216 A1 FR2386216 A1 FR 2386216A1
- Authority
- FR
- France
- Prior art keywords
- television receiver
- state
- electrical circuit
- amplifier
- counter
- 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
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K21/00—Details of pulse counters or frequency dividers
- H03K21/38—Starting, stopping or resetting the counter
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Noise Elimination (AREA)
Abstract
L'invention concerne un circuit électrique à utiliser dans la partie sélectrice de canaux d'un récepteur de télévision. Le circuit comprend un sélecteur de bandes 30 qui, dans un premier état 1, commande le passage d'une première bande de fréquences (par exemple des signaux UHF) dans un compteur 10 à destination d'une première entrée 21a, 21b d'un amplificateur-multiplexeur 20 et qui, dans un autre état 2, commande le passage et l'amplification d'une seconde bande de fréquences (par exemple des signaux VHF) appliquée à une seconde entrée 23a, 23b de l'amplificateur-multiplexeur 20. Dans un premier état, le compteur est en service, tandis que, dans l'autre état, le compteur n'est pas en service et seuls les signaux de la seconde bande sont traités par l'amplificateur-multiplexeur à destination des étages suivants du recepteur de télévision. Le circuit de l'invention permet le traitement en multiplexage de bandes de différentes fréquences, tout en réduisant les parasites et la diaphonie.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/781,878 US4127820A (en) | 1977-03-28 | 1977-03-28 | Electrical circuit for multiplexing and dividing different bands or frequencies |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2386216A1 true FR2386216A1 (fr) | 1978-10-27 |
FR2386216B1 FR2386216B1 (fr) | 1980-07-04 |
Family
ID=25124249
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7808964A Granted FR2386216A1 (fr) | 1977-03-28 | 1978-03-28 | Circuit electrique de division de frequence pour reglage d'accord d'un recepteur de television |
Country Status (14)
Country | Link |
---|---|
US (1) | US4127820A (fr) |
JP (1) | JPS53120316A (fr) |
AT (1) | AT385615B (fr) |
AU (2) | AU513878B2 (fr) |
CA (1) | CA1098974A (fr) |
DE (1) | DE2812991C3 (fr) |
FI (1) | FI67460C (fr) |
FR (1) | FR2386216A1 (fr) |
GB (1) | GB1595374A (fr) |
HK (1) | HK56883A (fr) |
IT (1) | IT1093718B (fr) |
MY (1) | MY8500706A (fr) |
SE (1) | SE418440B (fr) |
SG (1) | SG38483G (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2507410A1 (fr) * | 1981-06-05 | 1982-12-10 | Rca Corp | Dispositif d'accord a boucle a verrouillage de phase comprenant un compteur a predetermination conditionne pour osciller a une frequence hors de bande |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4317228A (en) * | 1979-10-15 | 1982-02-23 | Zenith Radio Corporation | Television receiver having multiplexed phase lock loop tuning system |
US4379271A (en) * | 1980-08-25 | 1983-04-05 | Rca Corporation | Input selection arrangement for applying different local oscillator signals to a prescaler of a phase-lock loop tuning system |
JPS59122161A (ja) * | 1982-12-28 | 1984-07-14 | Toshiba Corp | ブロ−ドバンドネツトワ−クシステム |
JPS60149227A (ja) * | 1984-01-13 | 1985-08-06 | Sony Corp | Shf受信機 |
US5115317A (en) * | 1989-12-22 | 1992-05-19 | Alps Electric Co., Ltd. | Tuning apparatus for a television receiver including selectively activated amplifier and local oscillator circuits |
US6714057B2 (en) * | 2001-08-28 | 2004-03-30 | Xilinx, Inc. | Multi-purpose digital frequency synthesizer circuit for a programmable logic device |
US6445228B1 (en) * | 2001-08-28 | 2002-09-03 | Xilinx, Inc. | Programmable even-number clock divider circuit with duty cycle correction and optional phase shift |
US7135924B2 (en) * | 2005-01-28 | 2006-11-14 | Semiconductor Components Industries, L.L.C. | Cross-talk reduction circuit and method therefor |
JP2007300300A (ja) * | 2006-04-28 | 2007-11-15 | Alps Electric Co Ltd | テレビジョンチューナ用集積回路及びテレビジョンチューナ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1502225A (fr) * | 1965-12-01 | 1967-11-18 | Euratom | Dispositif numérique de commutation à bascules |
DE2623783A1 (de) * | 1975-05-30 | 1976-12-02 | Sanyo Electric Co | Ueberlagerungsempfaenger fuer mehrere frequenzbaender mit digital steuerbarem normalfrequenzgenerator |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3752934A (en) * | 1969-12-19 | 1973-08-14 | N Shoichi | Stereo demodulating circuit triggered by a minimum input signal level |
US3707603A (en) * | 1969-12-29 | 1972-12-26 | Rca Corp | Fm stereophonic receiver detection apparatus and disabling means |
JPS50135912A (fr) * | 1974-03-30 | 1975-10-28 | ||
US3883807A (en) * | 1974-05-30 | 1975-05-13 | Motorola Inc | Tuning control system |
US3942122A (en) * | 1974-10-15 | 1976-03-02 | Quasar Electronics Corporation | Multiband tuner control system |
JPS5533747Y2 (fr) * | 1975-04-14 | 1980-08-11 | ||
US3997796A (en) * | 1975-05-14 | 1976-12-14 | Ncr Corporation | High speed divide-by-two circuit |
US4024476A (en) * | 1976-02-02 | 1977-05-17 | Rca Corporation | Programmable frequency divider for a television receiver frequency synthesizer |
US4019118A (en) * | 1976-03-29 | 1977-04-19 | Rca Corporation | Third harmonic signal generator |
-
1977
- 1977-03-28 US US05/781,878 patent/US4127820A/en not_active Expired - Lifetime
-
1978
- 1978-03-20 AU AU34281/78A patent/AU513878B2/en not_active Expired
- 1978-03-20 CA CA299,462A patent/CA1098974A/fr not_active Expired
- 1978-03-20 AU AU34281/78A patent/AU3428178A/en active Granted
- 1978-03-21 SE SE7803249A patent/SE418440B/sv not_active IP Right Cessation
- 1978-03-21 FI FI780886A patent/FI67460C/fi not_active IP Right Cessation
- 1978-03-23 GB GB11625/78A patent/GB1595374A/en not_active Expired
- 1978-03-23 DE DE2812991A patent/DE2812991C3/de not_active Expired
- 1978-03-24 IT IT21634/78A patent/IT1093718B/it active
- 1978-03-27 JP JP3594578A patent/JPS53120316A/ja active Granted
- 1978-03-28 FR FR7808964A patent/FR2386216A1/fr active Granted
- 1978-03-28 AT AT0218078A patent/AT385615B/de not_active IP Right Cessation
-
1983
- 1983-06-30 SG SG384/83A patent/SG38483G/en unknown
- 1983-11-17 HK HK568/83A patent/HK56883A/xx unknown
-
1985
- 1985-12-30 MY MY706/85A patent/MY8500706A/xx unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1502225A (fr) * | 1965-12-01 | 1967-11-18 | Euratom | Dispositif numérique de commutation à bascules |
DE2623783A1 (de) * | 1975-05-30 | 1976-12-02 | Sanyo Electric Co | Ueberlagerungsempfaenger fuer mehrere frequenzbaender mit digital steuerbarem normalfrequenzgenerator |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2507410A1 (fr) * | 1981-06-05 | 1982-12-10 | Rca Corp | Dispositif d'accord a boucle a verrouillage de phase comprenant un compteur a predetermination conditionne pour osciller a une frequence hors de bande |
Also Published As
Publication number | Publication date |
---|---|
FI67460C (fi) | 1985-03-11 |
CA1098974A (fr) | 1981-04-07 |
DE2812991A1 (de) | 1978-10-05 |
SE418440B (sv) | 1981-05-25 |
FI780886A (fi) | 1978-09-29 |
HK56883A (en) | 1983-11-25 |
GB1595374A (en) | 1981-08-12 |
US4127820A (en) | 1978-11-28 |
JPS53120316A (en) | 1978-10-20 |
JPS6141442B2 (fr) | 1986-09-16 |
IT7821634A0 (it) | 1978-03-24 |
AU3428178A (en) | 1979-09-27 |
FR2386216B1 (fr) | 1980-07-04 |
AU513878B2 (en) | 1981-01-08 |
DE2812991B2 (de) | 1981-02-19 |
MY8500706A (en) | 1985-12-31 |
SG38483G (en) | 1984-07-20 |
AT385615B (de) | 1988-04-25 |
FI67460B (fi) | 1984-11-30 |
DE2812991C3 (de) | 1981-11-12 |
ATA218078A (de) | 1987-09-15 |
AU3458178A (en) | 1979-10-04 |
SE7803249L (sv) | 1978-09-29 |
IT1093718B (it) | 1985-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property | ||
ST | Notification of lapse |