GB2237424B - Programmable frequency divider - Google Patents

Programmable frequency divider

Info

Publication number
GB2237424B
GB2237424B GB9004582A GB9004582A GB2237424B GB 2237424 B GB2237424 B GB 2237424B GB 9004582 A GB9004582 A GB 9004582A GB 9004582 A GB9004582 A GB 9004582A GB 2237424 B GB2237424 B GB 2237424B
Authority
GB
United Kingdom
Prior art keywords
frequency divider
programmable frequency
programmable
divider
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.)
Expired - Fee Related
Application number
GB9004582A
Other languages
English (en)
Other versions
GB9004582D0 (en
GB2237424A (en
Inventor
Kazuo Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Radio Co Ltd
Nihon Musen KK
Original Assignee
Japan Radio Co Ltd
Nihon Musen KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Radio Co Ltd, Nihon Musen KK filed Critical Japan Radio Co Ltd
Publication of GB9004582D0 publication Critical patent/GB9004582D0/en
Publication of GB2237424A publication Critical patent/GB2237424A/en
Application granted granted Critical
Publication of GB2237424B publication Critical patent/GB2237424B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • 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
GB9004582A 1989-10-23 1990-03-01 Programmable frequency divider Expired - Fee Related GB2237424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1276315A JP2572283B2 (ja) 1989-10-23 1989-10-23 可変分周回路

Publications (3)

Publication Number Publication Date
GB9004582D0 GB9004582D0 (en) 1990-04-25
GB2237424A GB2237424A (en) 1991-05-01
GB2237424B true GB2237424B (en) 1994-03-23

Family

ID=17567743

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9004582A Expired - Fee Related GB2237424B (en) 1989-10-23 1990-03-01 Programmable frequency divider

Country Status (7)

Country Link
US (1) US5065415A (https=)
JP (1) JP2572283B2 (https=)
KR (1) KR950004641B1 (https=)
CA (1) CA2010723C (https=)
DE (1) DE4008385C3 (https=)
FR (1) FR2653617B1 (https=)
GB (1) GB2237424B (https=)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5195111A (en) * 1990-09-07 1993-03-16 Nihon Musen Kabushiki Kaisha Programmable frequency dividing apparatus
FR2677515A1 (fr) * 1991-06-07 1992-12-11 Philips Composants Circuit diviseur de frequence.
JPH05152938A (ja) * 1991-11-27 1993-06-18 Nec Yamagata Ltd カウンタ回路
US5304938A (en) * 1992-11-18 1994-04-19 Gec Plessey Semiconductors, Inc. Method and apparatus for providing a lower frequency signal with reference to a higher frequency signal
EP0602422A1 (en) * 1992-12-15 1994-06-22 International Business Machines Corporation Dynamic frequency shifting with divide by one clock generators
US5469116A (en) * 1994-01-27 1995-11-21 Sgs-Thomson Microelectronics, Inc. Clock generator circuit with low current frequency divider
FR2719728A1 (fr) * 1994-05-04 1995-11-10 Philips Composants Diviseur de fréquence, synthétiseur de fréquence comportant un tel diviseur et radiotéléphone comportant un tel synthétiseur.
US5794021A (en) * 1994-11-02 1998-08-11 Advanced Micro Devices, Inc. Variable frequency clock generation circuit using aperiodic patterns
US6272465B1 (en) 1994-11-02 2001-08-07 Legerity, Inc. Monolithic PC audio circuit
GB2297613B (en) * 1995-02-02 1999-09-01 Synectix Ltd Computer-to-plate apparatus
DE19519321C2 (de) * 1995-05-26 1997-10-16 Gerhard Kultscher Ind Elektron Frequenzteiler mit dualer, aktaler, dezimaler oder hexadezimaler Divisoreingabe
US5524035A (en) * 1995-08-10 1996-06-04 International Business Machines Corporation Symmetric clock system for a data processing system including dynamically switchable frequency divider
DE19734930C2 (de) * 1997-08-12 1999-08-19 Siemens Ag Frequenzteileranordnung
US5948046A (en) * 1997-12-15 1999-09-07 Telefonaktiebolaget Lm Ericsson Multi-divide frequency division
FR2782422B1 (fr) * 1998-08-13 2000-09-15 St Microelectronics Sa Circuit de mesure d'intervalles de temps auto-calibre
DE10002361C1 (de) 2000-01-20 2001-01-25 Infineon Technologies Ag Frequenzteiler
WO2001095117A2 (en) * 2000-06-06 2001-12-13 Igor Anatolievich Abrosimov Data processing system for high speed memory test
WO2002052727A1 (en) * 2000-12-22 2002-07-04 Koninklijke Philips Electronics N.V. Frequency divider with reduced power consumption, apparatus based thereon, and method for power efficient frequency divider
WO2002093747A2 (en) * 2001-05-17 2002-11-21 Koninklijke Philips Electronics N.V. Improved frequency divider with reduced jitter and apparatus based thereon
US6566918B1 (en) * 2001-08-28 2003-05-20 Xilinx, Inc. Divide-by-N clock divider circuit with minimal additional delay
US6445228B1 (en) 2001-08-28 2002-09-03 Xilinx, Inc. Programmable even-number clock divider circuit with duty cycle correction and optional phase shift
US6714057B2 (en) * 2001-08-28 2004-03-30 Xilinx, Inc. Multi-purpose digital frequency synthesizer circuit for a programmable logic device
JP4386725B2 (ja) * 2001-08-29 2009-12-16 エヌエックスピー ビー ヴィ 低減されたジッタを備える改良された分周器及びそれに基づく送信器
TWI222786B (en) * 2003-09-17 2004-10-21 Mediatek Inc Multi-modulus programmable frequency divider
US7395286B1 (en) * 2004-01-05 2008-07-01 National Semiconductor Corporation Method for generating non-overlapping N-phases of divide-by-N clocks with precise 1/N duty ratio using a shift register
US6961403B1 (en) 2004-05-28 2005-11-01 International Business Machines Corporation Programmable frequency divider with symmetrical output
US7924069B2 (en) * 2006-06-28 2011-04-12 Qualcomm Incorporated Multi-modulus divider retiming circuit
TWI337454B (en) * 2007-05-16 2011-02-11 Ind Tech Res Inst Programmable integer/non-integer frequency divider
US8248118B2 (en) * 2010-08-09 2012-08-21 Texas Instruments Incorporated High-speed frequency divider and a phase locked loop that uses the high-speed frequency divider
US8406371B1 (en) * 2012-01-04 2013-03-26 Silicon Laboratories Inc. Programmable divider circuitry for improved duty cycle consistency and related systems and methods
CN112953530B (zh) * 2021-01-28 2024-02-23 星宸科技股份有限公司 除频器电路

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202837A (en) * 1962-09-05 1965-08-24 Diamond Power Speciality Frequency divider employing receptacles having preset frequency ratio connections for standard frequency plug-in units
US4053739A (en) * 1976-08-11 1977-10-11 Motorola, Inc. Dual modulus 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
GB2089539B (en) * 1980-12-08 1984-08-01 Plessey Co Ltd Adjustable ratio divider
US4394769A (en) * 1981-06-15 1983-07-19 Hughes Aircraft Company Dual modulus counter having non-inverting feedback
US4575867A (en) * 1982-08-09 1986-03-11 Rockwell International Corporation High speed programmable prescaler
US4715052A (en) * 1986-03-10 1987-12-22 Texas Instruments Incorporated Frequency divide by N circuit

Also Published As

Publication number Publication date
DE4008385A1 (de) 1991-04-25
GB9004582D0 (en) 1990-04-25
FR2653617A1 (fr) 1991-04-26
CA2010723C (en) 1993-11-30
JP2572283B2 (ja) 1997-01-16
KR950004641B1 (ko) 1995-05-03
GB2237424A (en) 1991-05-01
FR2653617B1 (fr) 1995-07-21
DE4008385C3 (de) 1997-09-04
DE4008385C2 (https=) 1993-06-24
JPH03136520A (ja) 1991-06-11
CA2010723A1 (en) 1991-04-23
US5065415A (en) 1991-11-12
KR910008965A (ko) 1991-05-31

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee