ES2109939T3 - Aparato y metodo de division de frecuencia de relacion variable. - Google Patents
Aparato y metodo de division de frecuencia de relacion variable.Info
- Publication number
- ES2109939T3 ES2109939T3 ES91850217T ES91850217T ES2109939T3 ES 2109939 T3 ES2109939 T3 ES 2109939T3 ES 91850217 T ES91850217 T ES 91850217T ES 91850217 T ES91850217 T ES 91850217T ES 2109939 T3 ES2109939 T3 ES 2109939T3
- Authority
- ES
- Spain
- Prior art keywords
- variable divider
- frequency division
- division
- double
- selection signals
- 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 - Lifetime
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
- H03L7/16—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
- H03L7/183—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 time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
- H03L7/193—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 time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number the frequency divider/counter comprising a commutable pre-divider, e.g. a two modulus divider
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
- H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
- H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
- H03K23/667—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses by switching the base during a counting cycle
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Manipulation Of Pulses (AREA)
Abstract
EN UNA BOBINA CERRADA DE FASE PROVISTA DE UN DIVISOR VARIABLE, SE UTILIZA UNA CUENTA MODULOS DOBLE PARA PROPORCIONAR EL DIVISOR VARIABLE CON SEÑALES DE SELECCION. EL DIVISOR VARIABLE ES CAPAZ DE PROPORCIONAR UNA PROPORCION COMPLETA DE LA DIVISION EN INCREMENTOS DE UNO SOBRE UNA GAMA CONTIGUA DE VALORES. EL CONTADOR DE MODULOS DOBLE INCLUYE UN CONTADOR, UN COMPARADOR Y PUERTAS LOGICAS QUE GENERAN LAS SEÑALES DE SELECCION QUE PERMITEN AL DIVISOR VARIABLE DIVIDIR UNA SEÑAL INTRODUCIDA POR AL MENOS LAS PROPORCIONES DE DIVISION R1 Y R2. UNA BOBINA CERRADA DE FASE QUE UTILIZA EL CONTADOR DE MODULOS DOBLE, PARTICULARMENTE IDONEA PARA UTILIZAR EN UN SINTETIZADOR DE FRECUENCIA DIGITAL.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/578,259 US5066927A (en) | 1990-09-06 | 1990-09-06 | Dual modulus counter for use in a phase locked loop |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2109939T3 true ES2109939T3 (es) | 1998-02-01 |
Family
ID=24312092
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES91850217T Expired - Lifetime ES2109939T3 (es) | 1990-09-06 | 1991-09-05 | Aparato y metodo de division de frecuencia de relacion variable. |
Country Status (11)
Country | Link |
---|---|
US (1) | US5066927A (es) |
EP (1) | EP0474616B1 (es) |
JP (1) | JP2978296B2 (es) |
AU (1) | AU638602B2 (es) |
CA (1) | CA2050676C (es) |
DE (1) | DE69128013T2 (es) |
ES (1) | ES2109939T3 (es) |
FI (1) | FI105617B (es) |
HK (1) | HK1004075A1 (es) |
MX (1) | MX9100958A (es) |
NZ (1) | NZ239629A (es) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3927967A1 (de) * | 1989-08-24 | 1991-02-28 | Bosch Gmbh Robert | Elektronischer zaehler |
US5220275A (en) * | 1991-07-26 | 1993-06-15 | Ericsson Ge Mobile Communication Holding, Inc. | Accumulator phase digitizer |
US5359635A (en) * | 1993-04-19 | 1994-10-25 | Codex, Corp. | Programmable frequency divider in a phase lock loop |
JPH0943281A (ja) * | 1995-07-28 | 1997-02-14 | Nec Corp | カウンタ装置 |
US5673051A (en) * | 1995-12-21 | 1997-09-30 | Hughes Electronics | Discrete phase modulator |
US5703514A (en) * | 1995-12-21 | 1997-12-30 | Hughes Electronics | Digital frequency divider phase shifter |
FR2764139B1 (fr) * | 1997-05-29 | 1999-07-23 | Alsthom Cge Alcatel | Dispositif de division de frequence a prediviseur suivi d'un compteur programmable, prediviseur et synthetiseur de frequence correspondants |
US6035182A (en) * | 1998-01-20 | 2000-03-07 | Motorola, Inc. | Single counter dual modulus frequency division apparatus |
US6418174B1 (en) * | 1999-02-19 | 2002-07-09 | Rf Micro Devices, Inc. | Frequency shift key modulator |
US6597246B2 (en) * | 2001-05-14 | 2003-07-22 | Dsp Group, Inc. | Methods and apparatus for alteration of terminal counts of phase-locked loops |
US6707874B2 (en) | 2002-04-15 | 2004-03-16 | Charles Douglas Murphy | Multiple-output counters for analog-to-digital and digital-to-analog conversion |
FR2865326B1 (fr) * | 2004-01-20 | 2006-07-21 | Thales Sa | Procede et dispositif de division de frequence |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4053739A (en) * | 1976-08-11 | 1977-10-11 | Motorola, Inc. | Dual modulus programmable counter |
US4084082A (en) * | 1976-10-12 | 1978-04-11 | Fairchild Camera And Instrument Corporation | Programmable counter |
US4184068A (en) * | 1977-11-14 | 1980-01-15 | Harris Corporation | Full binary programmed frequency divider |
JPS5673907A (en) * | 1979-11-21 | 1981-06-19 | Hitachi Ltd | Frequency divider |
US4325031A (en) * | 1980-02-13 | 1982-04-13 | Motorola, Inc. | Divider with dual modulus prescaler for phase locked loop frequency synthesizer |
US4316151A (en) * | 1980-02-13 | 1982-02-16 | Motorola, Inc. | Phase locked loop frequency synthesizer using multiple dual modulus prescalers |
US4468797A (en) * | 1981-02-13 | 1984-08-28 | Oki Electric Industry Co., Ltd. | Swallow counters |
US4555793A (en) * | 1983-11-28 | 1985-11-26 | Allied Corporation | Averaging non-integer frequency division apparatus |
US4658406A (en) * | 1985-08-12 | 1987-04-14 | Andreas Pappas | Digital frequency divider or synthesizer and applications thereof |
US4856032A (en) * | 1987-01-12 | 1989-08-08 | Motorola, Inc. | High speed programmable frequency divider and PLL |
US4891825A (en) * | 1988-02-09 | 1990-01-02 | Motorola, Inc. | Fully synchronized programmable counter with a near 50% duty cycle output signal |
-
1990
- 1990-09-06 US US07/578,259 patent/US5066927A/en not_active Expired - Lifetime
-
1991
- 1991-09-02 NZ NZ239629A patent/NZ239629A/xx unknown
- 1991-09-04 FI FI914166A patent/FI105617B/fi active
- 1991-09-04 CA CA002050676A patent/CA2050676C/en not_active Expired - Fee Related
- 1991-09-05 EP EP91850217A patent/EP0474616B1/en not_active Expired - Lifetime
- 1991-09-05 ES ES91850217T patent/ES2109939T3/es not_active Expired - Lifetime
- 1991-09-05 MX MX9100958A patent/MX9100958A/es not_active IP Right Cessation
- 1991-09-05 AU AU83697/91A patent/AU638602B2/en not_active Ceased
- 1991-09-05 DE DE69128013T patent/DE69128013T2/de not_active Expired - Fee Related
- 1991-09-06 JP JP3227356A patent/JP2978296B2/ja not_active Expired - Lifetime
-
1998
- 1998-04-14 HK HK98103077A patent/HK1004075A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2978296B2 (ja) | 1999-11-15 |
CA2050676C (en) | 2001-02-20 |
EP0474616B1 (en) | 1997-10-22 |
FI914166A0 (fi) | 1991-09-04 |
CA2050676A1 (en) | 1992-03-07 |
FI914166A (fi) | 1992-03-07 |
DE69128013T2 (de) | 1998-02-19 |
HK1004075A1 (en) | 1998-11-13 |
US5066927A (en) | 1991-11-19 |
AU638602B2 (en) | 1993-07-01 |
MX9100958A (es) | 1992-05-04 |
FI105617B (fi) | 2000-09-15 |
EP0474616A2 (en) | 1992-03-11 |
DE69128013D1 (de) | 1997-11-27 |
EP0474616A3 (en) | 1992-06-03 |
JPH05183428A (ja) | 1993-07-23 |
AU8369791A (en) | 1992-03-12 |
NZ239629A (en) | 1995-01-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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