MX3472E - Mejoras en sintetizador de frecuencia de television para portadoras de frecuencia no normalizadas - Google Patents
Mejoras en sintetizador de frecuencia de television para portadoras de frecuencia no normalizadasInfo
- Publication number
- MX3472E MX3472E MX100401U MX10040176U MX3472E MX 3472 E MX3472 E MX 3472E MX 100401 U MX100401 U MX 100401U MX 10040176 U MX10040176 U MX 10040176U MX 3472 E MX3472 E MX 3472E
- Authority
- MX
- Mexico
- Prior art keywords
- frequency
- normalized
- deviation
- signal
- local oscillator
- Prior art date
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Television Receiver Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
La presente invención se refiere a mejoras en sintetizador de frecuencia de televisión para portadoras de frecuencia no normalizadas, para sintonizar un receptor en una portadora de radiofrecuencia asociada con la posición desintonización, teniendo la portadora de radiofrecuencia ya sea una frecuencia normalizada o una frecuencia no normalizada arbitrariamente cerca de la frecuencia normalizada, que comprende: un oscilador controlado para generar una senal osciladora local; una fuente de una señal de frecuencia relativamente estable; un circuito mezclador para combinar la portadora de radiofrecuencia y la señal osciladora local para generar una senal de frecuencia intermedia caracterizadas por un circuito de control de contador acoplada al contador controlable para determinar un factor controlable mediante se hacen proporcionales las frecuencias de la señal osciladora local y de la señal de frecuencia estable, teniendo el factor controlable un valor nominal asociado con la frecuencia normalizada de la portadora de radiofrecuencia y un valor desviado del valor normal mediante una cantidad dentro de una escala predeterminada, determinada mediante una desviación esperada entre la frecuencia no normalizada y la frecuencia normalizada, siendo la desviación menor que la separación entre las posiciones de sintonización adyacentes, determiando el circuito de control de contador un factor controlable dentro de una escala entre los valores normal y desviacion, para reducir cualquier desviación entre la frecuencia de la portadora que lleva la información y del valor normalizado.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63206075A | 1975-11-14 | 1975-11-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX3472E true MX3472E (es) | 1980-12-09 |
Family
ID=24533910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX100401U MX3472E (es) | 1975-11-14 | 1976-11-12 | Mejoras en sintetizador de frecuencia de television para portadoras de frecuencia no normalizadas |
Country Status (15)
| Country | Link |
|---|---|
| JP (2) | JPS5828932B2 (es) |
| AT (1) | AT377878B (es) |
| AU (1) | AU512493B2 (es) |
| BE (1) | BE848283A (es) |
| CA (1) | CA1175586A (es) |
| DE (1) | DE2651297C3 (es) |
| ES (1) | ES453293A1 (es) |
| FI (1) | FI66269C (es) |
| FR (2) | FR2331917A1 (es) |
| GB (1) | GB1561544A (es) |
| IT (2) | IT1073074B (es) |
| MX (1) | MX3472E (es) |
| NL (1) | NL188065C (es) |
| PL (1) | PL114951B1 (es) |
| SE (1) | SE430200B (es) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU514310B2 (en) * | 1976-05-21 | 1981-02-05 | Rca Corp. | Tuner with pll |
| GB1564375A (en) * | 1977-09-07 | 1980-04-10 | Marconi Co Ltd | Frequency generators |
| JPS598966B2 (ja) * | 1979-04-10 | 1984-02-28 | 株式会社東芝 | テレビジヨン受像機の制御装置 |
| JPS5657324A (en) * | 1979-10-16 | 1981-05-19 | Sanyo Electric Co Ltd | Digital electronic tuning system |
| JPS56162527A (en) * | 1980-05-20 | 1981-12-14 | Toshiba Corp | Controller of television receiver |
| US4476580A (en) * | 1980-06-17 | 1984-10-09 | Sanyo Electric Co., Ltd. | Automatic continuous tuning control apparatus for a receiver |
| US4521918A (en) * | 1980-11-10 | 1985-06-04 | General Electric Company | Battery saving frequency synthesizer arrangement |
| ES8406020A1 (es) * | 1982-09-01 | 1984-06-16 | Rca Corp | "perfeccionamientos introducidos en un aparato de control de sintonizacion para un sistema de television" |
| US4503465A (en) * | 1982-11-24 | 1985-03-05 | Rca Corporation | Analog signal comparator using digital circuitry |
| EP0302290B1 (en) * | 1987-08-03 | 1994-12-14 | Motorola Inc. | Automatic frequency control system |
| US9136955B2 (en) | 2009-06-30 | 2015-09-15 | Thomson Licensing | Method of resending digital signals |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL166828C (nl) * | 1971-05-08 | 1981-09-15 | Matsushita Electric Industrial Co Ltd | Automatische kanaalkies-inrichting. |
| JPS4943084Y2 (es) * | 1971-06-29 | 1974-11-26 | ||
| JPS4841361A (es) * | 1971-09-28 | 1973-06-16 | ||
| JPS555729B2 (es) * | 1971-11-29 | 1980-02-08 | ||
| DE2211664A1 (de) * | 1972-03-10 | 1973-09-20 | Loewe Opta Gmbh | Abstimmeinheit fuer hochfrequenzempfangsgeraete |
| JPS5228321B2 (es) * | 1972-03-15 | 1977-07-26 | ||
| US3803494A (en) * | 1972-04-07 | 1974-04-09 | Bendix Corp | Pulse tuning control system for radio receivers |
| DE2217002B2 (de) * | 1972-04-08 | 1976-04-15 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Empfaenger fuer einseitenbandmodulierte sender in einem festen traegerfrequenzraster |
| DE2333851A1 (de) * | 1973-07-03 | 1975-01-23 | Standard Elektrik Lorenz Ag | Verfahren und anordnungen zur selbsttaetigen nachregelung der mit einer abstimmanordnunggeingestellten oszillatorfrequenz eines ueberlagerungsempfangsteils einer bild und/oder tonwiedergabeanordnung |
| DE2333852A1 (de) * | 1973-07-03 | 1975-01-23 | Standard Elektrik Lorenz Ag | Ueberlagerungsempfaenger mit einer digital einstellbaren abstimmanordnung |
| IT1036497B (it) * | 1975-07-11 | 1979-10-30 | Indesit | Circuito selezionatore di emittente in un ricevitore di segnali |
-
1976
- 1976-10-15 IT IT28406/76A patent/IT1073074B/it active
- 1976-11-05 GB GB46208/76A patent/GB1561544A/en not_active Expired
- 1976-11-09 CA CA000265196A patent/CA1175586A/en not_active Expired
- 1976-11-10 DE DE2651297A patent/DE2651297C3/de not_active Expired
- 1976-11-12 PL PL1976193671A patent/PL114951B1/pl unknown
- 1976-11-12 FR FR7634164A patent/FR2331917A1/fr active Granted
- 1976-11-12 AU AU19581/76A patent/AU512493B2/en not_active Expired
- 1976-11-12 ES ES453293A patent/ES453293A1/es not_active Expired
- 1976-11-12 FI FI763252A patent/FI66269C/fi not_active IP Right Cessation
- 1976-11-12 MX MX100401U patent/MX3472E/es unknown
- 1976-11-12 BE BE172309A patent/BE848283A/xx not_active IP Right Cessation
- 1976-11-15 AT AT0848976A patent/AT377878B/de active
- 1976-11-15 NL NLAANVRAGE7612666,A patent/NL188065C/xx not_active IP Right Cessation
- 1976-11-15 JP JP51137712A patent/JPS5828932B2/ja not_active Expired
-
1978
- 1978-11-24 IT IT30200/78A patent/IT1100758B/it active
-
1979
- 1979-03-09 SE SE7902170A patent/SE430200B/sv not_active IP Right Cessation
-
1980
- 1980-11-14 JP JP55161310A patent/JPS5829655B2/ja not_active Expired
-
1982
- 1982-01-05 FR FR8200051A patent/FR2495407B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AU512493B2 (en) | 1980-10-16 |
| FI66269C (fi) | 1984-09-10 |
| DE2651297B2 (de) | 1979-03-29 |
| JPS5828932B2 (ja) | 1983-06-18 |
| FI763252A7 (es) | 1977-05-15 |
| JPS5696523A (en) | 1981-08-04 |
| IT1100758B (it) | 1985-09-28 |
| SE7902170L (sv) | 1979-03-09 |
| IT1073074B (it) | 1985-04-13 |
| SE430200B (sv) | 1983-10-24 |
| NL7612666A (nl) | 1977-05-17 |
| FR2495407B1 (fr) | 1986-01-17 |
| NL188065C (nl) | 1992-03-16 |
| PL114951B1 (en) | 1981-03-31 |
| FR2331917A1 (fr) | 1977-06-10 |
| FR2331917B1 (es) | 1982-07-09 |
| BE848283A (fr) | 1977-03-01 |
| IT7830200A0 (it) | 1978-11-24 |
| NL188065B (nl) | 1991-10-16 |
| GB1561544A (en) | 1980-02-20 |
| CA1175586A (en) | 1984-10-02 |
| ATA848976A (de) | 1984-09-15 |
| AT377878B (de) | 1985-05-10 |
| FI66269B (fi) | 1984-05-31 |
| ES453293A1 (es) | 1977-11-16 |
| DE2651297A1 (de) | 1977-05-26 |
| JPS5261904A (en) | 1977-05-21 |
| JPS5829655B2 (ja) | 1983-06-24 |
| DE2651297C3 (de) | 1987-04-16 |
| AU1958176A (en) | 1978-05-18 |
| FR2495407A1 (fr) | 1982-06-04 |
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