ES2048681A1 - Sintetizador digital de frecuencias. - Google Patents
Sintetizador digital de frecuencias.Info
- Publication number
- ES2048681A1 ES2048681A1 ES9202194A ES9202194A ES2048681A1 ES 2048681 A1 ES2048681 A1 ES 2048681A1 ES 9202194 A ES9202194 A ES 9202194A ES 9202194 A ES9202194 A ES 9202194A ES 2048681 A1 ES2048681 A1 ES 2048681A1
- Authority
- ES
- Spain
- Prior art keywords
- signal
- controlled oscillator
- numerically controlled
- programming
- frequency
- 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
- 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
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
-
- 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
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
- H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
- H03L7/0994—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider comprising an accumulator
-
- 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
- H03L7/181—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 numerical count result being used for locking the loop, the counter counting during fixed time intervals
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
QUE UTILIZA UN OSCILADOR CONTROLADO NUMERICAMENTE (1) AL QUE SE APLICA UNA SEÑAL DE REFERENCIA (FSIREF SC) Y UNA SEÑAL DE PROGRAMACION (PROG) DE MANERA QUE A PARTIR DE LA SEÑAL DE REFERENCIA GENERA UNA SEÑAL DE SALIDA (FSISAL SC) CUYA FRECUENCIA DEPENDE DEL VALOR DE LA SEÑAL DE PROGRAMACION. SE CARACTERIZA PORQUE CUENTA CON UNA UNIDAD DE CONTROL (6) CUYA SALIDA SE CONECTA A LA ENTRADA DE PROGRAMACION (PROG) DEL OSCILADOR CONTROLADO NUMERICAMENTE (1), Y SOBRE LA QUE SE APLICAN; UNA SEÑAL EXTERIOR (FSIEXT SC) DE FORMA DIRECTA Y A TRAVES DE UN CONTADOR (5) QUE CUENTA LOS IMPULSOS DE LA SEÑAL EXTERIOR, Y LA SEÑAL DE SALIDA DEL OSCILADOR CONTROLADO NUMERICAMENTE (1), A TRAVES DE UN CONTADOR (4) QUE CUENTA LOS IMPULSOS DE LA SEÑAL DE SALIDA; TODO ELLO EN ORDEN A APLICAR UNA SEÑAL VARIABLE EN LA ENTRADA DE PROGRAMACION DEL OSCILADOR CONTROLADO NUMERICAMENTE (1) QUE COMPENSE LAS VARIACIONES DE LA FRECUENCIA DE LA SEÑAL DE REFERENCIA Y A OBTENER UNA SEÑAL DE SALIDA CUYA FRECUENCIA SEA DE LA MISMA PRECISION Y ESTABILIDAD QUE LAS DE LA SEÑAL EXTERIOR.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9202194A ES2048681B1 (es) | 1992-10-30 | 1992-10-30 | Sintetizador digital de frecuencias. |
EP19930115039 EP0595013A3 (en) | 1992-10-30 | 1993-09-18 | Digital frequency synthesizer. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES9202194A ES2048681B1 (es) | 1992-10-30 | 1992-10-30 | Sintetizador digital de frecuencias. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2048681A1 true ES2048681A1 (es) | 1994-03-16 |
ES2048681B1 ES2048681B1 (es) | 1995-01-01 |
Family
ID=8278633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES9202194A Expired - Lifetime ES2048681B1 (es) | 1992-10-30 | 1992-10-30 | Sintetizador digital de frecuencias. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0595013A3 (es) |
ES (1) | ES2048681B1 (es) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5483201A (en) * | 1993-09-30 | 1996-01-09 | At&T Corp. | Synchronization circuit using a high speed digital slip counter |
GB2288086A (en) * | 1994-03-28 | 1995-10-04 | Hewlett Packard Co | Digital phase-locked loop using a numerically-controlled oscillator |
US5828678A (en) * | 1996-04-12 | 1998-10-27 | Avid Technologies, Inc. | Digital audio resolving apparatus and method |
ES2262229T3 (es) * | 1997-04-07 | 2006-11-16 | BENQ MOBILE GMBH & CO. OHG | Ajuste digital afc mediante dos reciprocos. |
DE69837594T2 (de) * | 1998-02-27 | 2007-12-20 | Lucent Technologies Inc. | Taktimpulsgenerator |
US6396545B1 (en) * | 1999-03-01 | 2002-05-28 | Koninklijki Philips Electronics N.V. | Method for digital synchronization of video signals |
US7720451B2 (en) | 2004-12-03 | 2010-05-18 | Itt Manufacturing Enterprises, Inc. | Methods and apparatus for calibrating oscillators in a receiver |
US7538620B1 (en) | 2007-11-13 | 2009-05-26 | Harris Corporation | Phase lock control system for a voltage controlled oscillator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065720A (en) * | 1977-03-18 | 1977-12-27 | General Motors Corporation | Electronic channel selector |
ES8306939A1 (es) * | 1981-09-25 | 1983-06-01 | Philips Nv | "una disposicion de circuito de sintonizacion". |
FR2644016A1 (fr) * | 1989-03-04 | 1990-09-07 | Racal Dana Instr Ltd | Synthetiseur de frequences |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1268322A (en) * | 1970-10-19 | 1972-03-29 | Mullard Ltd | Automatic frequency control system |
FR2515902B1 (fr) * | 1981-11-03 | 1985-12-06 | Telecommunications Sa | Dispositif numerique de synchronisation d'horloge et son application aux reseaux de connexion |
US4855683A (en) * | 1987-11-18 | 1989-08-08 | Bell Communications Research, Inc. | Digital phase locked loop with bounded jitter |
-
1992
- 1992-10-30 ES ES9202194A patent/ES2048681B1/es not_active Expired - Lifetime
-
1993
- 1993-09-18 EP EP19930115039 patent/EP0595013A3/en not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4065720A (en) * | 1977-03-18 | 1977-12-27 | General Motors Corporation | Electronic channel selector |
ES8306939A1 (es) * | 1981-09-25 | 1983-06-01 | Philips Nv | "una disposicion de circuito de sintonizacion". |
FR2644016A1 (fr) * | 1989-03-04 | 1990-09-07 | Racal Dana Instr Ltd | Synthetiseur de frequences |
Also Published As
Publication number | Publication date |
---|---|
ES2048681B1 (es) | 1995-01-01 |
EP0595013A3 (en) | 1994-11-17 |
EP0595013A2 (en) | 1994-05-04 |
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