ES474451A1 - Un receptor perfeccionado que tiene un circuito sintetizadorde frecuencia - Google Patents
Un receptor perfeccionado que tiene un circuito sintetizadorde frecuenciaInfo
- Publication number
- ES474451A1 ES474451A1 ES474451A ES474451A ES474451A1 ES 474451 A1 ES474451 A1 ES 474451A1 ES 474451 A ES474451 A ES 474451A ES 474451 A ES474451 A ES 474451A ES 474451 A1 ES474451 A1 ES 474451A1
- Authority
- ES
- Spain
- Prior art keywords
- receiver
- synthesizing circuit
- frequency synthesizing
- frequency
- circuit
- 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.)
- Expired
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Un receptor perfeccionado que tiene un circuito sintetizador de frecuencia que comprende un oscilador de referencia, comprendiendo también dicho receptor una sección de radiofrecuencia, un oscilador local y una sección de frecuencia intermedia, siendo sintonizadle el oscilador local por medio del oscilador de referencia a una frecuencia que desvía la frecuencia intermedia de la frecuencia de un transmisor a recibir, caracterizado porque el receptor comprende al menos transitoriamente un circuito de medida para aplicar transitoriamente, en vez de una señal a recibir una señal de medida a una entrada de la sección de radiofrecuencia o la sección de frecuencia intermedia del receptor, cambiando la frecuencia de la señal de medida o la frecuencia de la señal del oscilador local y midiendo la frecuencia a la cual está sintonizada la sección de frecuencia intermedia, comprendiendo el receptor además, al menos transitoriamente, un circuito de corrección para tratar la frecuencia medida, a la cualestá sintonizada la sección de frecuencia intermedia, en un dato o referencia de sintonía para el circuito sintetizador de frecuencia.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7711714,A NL179435C (nl) | 1977-10-26 | 1977-10-26 | Ontvanger met een frequentiesynthese-schakeling. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES474451A1 true ES474451A1 (es) | 1979-04-16 |
Family
ID=19829407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES474451A Expired ES474451A1 (es) | 1977-10-26 | 1978-10-24 | Un receptor perfeccionado que tiene un circuito sintetizadorde frecuencia |
Country Status (17)
Country | Link |
---|---|
US (1) | US4271530A (es) |
JP (1) | JPS5471515A (es) |
AT (1) | AT377135B (es) |
AU (1) | AU519689B2 (es) |
BR (1) | BR7806975A (es) |
CA (1) | CA1149024A (es) |
DE (1) | DE2845483C2 (es) |
DK (1) | DK154596C (es) |
ES (1) | ES474451A1 (es) |
FR (1) | FR2407614A1 (es) |
GB (1) | GB2007049B (es) |
HK (1) | HK48283A (es) |
IT (1) | IT1108260B (es) |
MX (1) | MX146152A (es) |
NL (1) | NL179435C (es) |
SE (2) | SE7810993L (es) |
SG (1) | SG59582G (es) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2933416A1 (de) * | 1979-08-17 | 1981-03-26 | Siemens AG, 1000 Berlin und 8000 München | Verfahren zur automatischen zf-korrektur von rundfunkgeraeten mit digital einstellbarer empfangsrequenz |
US4344187A (en) * | 1979-10-18 | 1982-08-10 | Nippon Gakki Seizo Kabushiki Kaisha | Radio receiver with system for maintaining optimum tuning |
FR2490428B1 (fr) * | 1980-09-16 | 1986-04-18 | Thomson Csf | Dispositif de recherche de la frequence d'accord d'un recepteur radioelectrique a modulation de frequence |
DE3111933A1 (de) * | 1981-03-26 | 1982-10-07 | Blaupunkt-Werke Gmbh, 3200 Hildesheim | Ueberlagerungsempfaenger mit einem digitalen abstimmsystem |
JPS58223913A (ja) * | 1982-06-21 | 1983-12-26 | Yaesu Musen Co Ltd | 無線通信機の同調方式 |
JPS58225717A (ja) * | 1982-06-24 | 1983-12-27 | Yaesu Musen Co Ltd | 無線通信機の同調方式 |
JPS592419A (ja) * | 1982-06-28 | 1984-01-09 | Yaesu Musen Co Ltd | 無線通信機の同調方式 |
US4727591A (en) * | 1986-09-04 | 1988-02-23 | Arvin Industries, Inc. | Microprocessor controlled tuning system |
GB2220317B (en) * | 1988-05-28 | 1992-07-22 | Motorola Israel Ltd | Automatically self-calibrating oscillators in heterodyned radio receivers |
JPH0572309U (ja) * | 1992-03-17 | 1993-10-05 | 三井精機工業株式会社 | 主軸テーパ穴の硬化処理構造 |
JPH0574716U (ja) * | 1992-03-17 | 1993-10-12 | 三井精機工業株式会社 | 主軸テーパ穴の硬化構造 |
US5564091A (en) * | 1995-03-29 | 1996-10-08 | Motorola, Inc. | Method and apparatus for operating an automatic frequency control in a radio |
US5983077A (en) * | 1997-07-31 | 1999-11-09 | Ericsson Inc. | Systems and methods for automatic deviation setting and control in radio transmitters |
GB2335807B (en) * | 1998-03-24 | 2001-12-12 | Ericsson Telefon Ab L M | Demodulator circuits |
GB2344710B (en) * | 1998-12-09 | 2002-05-15 | Mitel Semiconductor Ltd | Improvements in or relating to demodulator alignment correction in tuners |
DE102004054667A1 (de) * | 2004-11-12 | 2006-05-18 | Hella Kgaa Hueck & Co. | Verfahren und Vorrichtung zum Stabilisieren einer Frequenz |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR957645A (es) * | 1942-11-03 | 1950-02-23 | ||
US2856519A (en) * | 1952-10-11 | 1958-10-14 | Gen Precision Lab Inc | Automatic signal frequency tracker, with search and hold-during-fade provisions |
DE2233724C3 (de) * | 1972-07-08 | 1975-11-27 | Loewe Opta Gmbh, 1000 Berlin | Schaltungsanordnung zum Einstellen der Frequenz in spannungsabhängigen Oszillatoren |
JPS51142201A (en) * | 1975-06-02 | 1976-12-07 | Onkyo Corp | Automatic frequency control circuit |
JPS5421947Y2 (es) * | 1975-11-13 | 1979-08-02 | ||
US4038689A (en) * | 1976-06-14 | 1977-07-26 | Matsushita Electric Corporation Of America | Frequency synthesizer tuning system with manual fine tuning control |
-
1977
- 1977-10-26 NL NLAANVRAGE7711714,A patent/NL179435C/xx not_active IP Right Cessation
-
1978
- 1978-09-12 US US05/941,370 patent/US4271530A/en not_active Expired - Lifetime
- 1978-10-19 DE DE2845483A patent/DE2845483C2/de not_active Expired
- 1978-10-19 CA CA000313781A patent/CA1149024A/en not_active Expired
- 1978-10-20 FR FR7829906A patent/FR2407614A1/fr active Granted
- 1978-10-23 DK DK470378A patent/DK154596C/da not_active IP Right Cessation
- 1978-10-23 SE SE7810993D patent/SE7810993L/xx not_active Application Discontinuation
- 1978-10-23 IT IT69430/78A patent/IT1108260B/it active
- 1978-10-23 BR BR7806975A patent/BR7806975A/pt unknown
- 1978-10-23 MX MX175343A patent/MX146152A/es unknown
- 1978-10-23 JP JP13037578A patent/JPS5471515A/ja active Granted
- 1978-10-23 SE SE7810993A patent/SE430844B/sv not_active IP Right Cessation
- 1978-10-23 GB GB7841640A patent/GB2007049B/en not_active Expired
- 1978-10-23 AU AU40972/78A patent/AU519689B2/en not_active Expired
- 1978-10-24 ES ES474451A patent/ES474451A1/es not_active Expired
- 1978-10-25 AT AT0763978A patent/AT377135B/de not_active IP Right Cessation
-
1982
- 1982-11-22 SG SG595/82A patent/SG59582G/en unknown
-
1983
- 1983-10-27 HK HK482/83A patent/HK48283A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DK154596C (da) | 1989-04-17 |
ATA763978A (de) | 1984-06-15 |
NL7711714A (nl) | 1979-05-01 |
GB2007049A (en) | 1979-05-10 |
FR2407614B1 (es) | 1984-10-19 |
MX146152A (es) | 1982-05-19 |
HK48283A (en) | 1983-11-04 |
NL179435B (nl) | 1986-04-01 |
IT1108260B (it) | 1985-12-02 |
SE430844B (sv) | 1983-12-12 |
CA1149024A (en) | 1983-06-28 |
AU519689B2 (en) | 1981-12-17 |
JPS5471515A (en) | 1979-06-08 |
FR2407614A1 (fr) | 1979-05-25 |
DK154596B (da) | 1988-11-28 |
GB2007049B (en) | 1982-09-29 |
BR7806975A (pt) | 1979-05-15 |
US4271530A (en) | 1981-06-02 |
NL179435C (nl) | 1986-09-01 |
DE2845483A1 (de) | 1979-05-03 |
SE7810993L (sv) | 1979-04-27 |
SG59582G (en) | 1983-09-02 |
IT7869430A0 (it) | 1978-10-23 |
DE2845483C2 (de) | 1982-08-12 |
AU4097278A (en) | 1980-05-01 |
DK470378A (da) | 1979-04-27 |
AT377135B (de) | 1985-02-11 |
JPS5620738B2 (es) | 1981-05-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FD1A | Patent lapsed |
Effective date: 19971001 |