JPS6243568B2 - - Google Patents

Info

Publication number
JPS6243568B2
JPS6243568B2 JP55092933A JP9293380A JPS6243568B2 JP S6243568 B2 JPS6243568 B2 JP S6243568B2 JP 55092933 A JP55092933 A JP 55092933A JP 9293380 A JP9293380 A JP 9293380A JP S6243568 B2 JPS6243568 B2 JP S6243568B2
Authority
JP
Japan
Prior art keywords
counter
output
frequency division
frequency 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
Application number
JP55092933A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5718129A (en
Inventor
Takashi Matsura
Yoshiharu Shigeta
Hiroyuki Kikuchi
Atsushi Iwata
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.)
NEC Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Nippon Electric Co Ltd
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 Nippon Telegraph and Telephone Corp, Nippon Electric Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9293380A priority Critical patent/JPS5718129A/ja
Priority to US06/277,396 priority patent/US4633194A/en
Priority to GB8120812A priority patent/GB2079999B/en
Priority to CA000381150A priority patent/CA1173917A/en
Priority to AU72632/81A priority patent/AU541058B2/en
Publication of JPS5718129A publication Critical patent/JPS5718129A/ja
Publication of JPS6243568B2 publication Critical patent/JPS6243568B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Pulse Circuits (AREA)
JP9293380A 1980-07-07 1980-07-07 Pulse swallow frequency divider Granted JPS5718129A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP9293380A JPS5718129A (en) 1980-07-07 1980-07-07 Pulse swallow frequency divider
US06/277,396 US4633194A (en) 1980-07-07 1981-06-25 Digital frequency divider suitable for a frequency synthesizer
GB8120812A GB2079999B (en) 1980-07-07 1981-07-06 Digital frequency divider
CA000381150A CA1173917A (en) 1980-07-07 1981-07-06 Digital frequency divider suitable for a frequency synthesizer
AU72632/81A AU541058B2 (en) 1980-07-07 1981-07-07 Digital frequency divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9293380A JPS5718129A (en) 1980-07-07 1980-07-07 Pulse swallow frequency divider

Publications (2)

Publication Number Publication Date
JPS5718129A JPS5718129A (en) 1982-01-29
JPS6243568B2 true JPS6243568B2 (en]) 1987-09-16

Family

ID=14068282

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9293380A Granted JPS5718129A (en) 1980-07-07 1980-07-07 Pulse swallow frequency divider

Country Status (5)

Country Link
US (1) US4633194A (en])
JP (1) JPS5718129A (en])
AU (1) AU541058B2 (en])
CA (1) CA1173917A (en])
GB (1) GB2079999B (en])

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5418536A (en) * 1981-12-21 1995-05-23 Westinghouse Electric Corporation Bandwidth and amplitude insensitive frequency discriminator
US4575867A (en) * 1982-08-09 1986-03-11 Rockwell International Corporation High speed programmable prescaler
GB2132047A (en) * 1982-12-04 1984-06-27 Grundy & Partners Ltd Frequency divider circuits
US4573176A (en) * 1983-11-18 1986-02-25 Rca Corporation Fractional frequency divider
JPS60134144U (ja) * 1984-02-20 1985-09-06 株式会社ミツトヨ 電気液圧式材料試験装置
US4815018A (en) * 1985-12-24 1989-03-21 Hughes Aircraft Company Spurless fractional divider direct digital frequency synthesizer and method
JPS62206925A (ja) * 1986-03-05 1987-09-11 Mitsubishi Electric Corp 周波数シンセサイザ
JPS63131616A (ja) * 1986-11-20 1988-06-03 Mitsubishi Electric Corp プログラマブルクロツク分周器
US4856032A (en) * 1987-01-12 1989-08-08 Motorola, Inc. High speed programmable frequency divider and PLL
GB8727951D0 (en) * 1987-11-30 1988-01-06 Plessey Co Plc Counters
US5020082A (en) * 1988-06-15 1991-05-28 Seiko Epson Corporation Asynchronous counter
US4940950A (en) * 1988-08-12 1990-07-10 Tel-Instrument Electronics Corporation Frequency synthesis method and apparatus using approximation to provide closely spaced discrete frequencies over a wide range with rapid acquisition
US4887071A (en) * 1988-08-18 1989-12-12 Siemens Transmission Systems, Inc. Digital activity loss detector
US4975931A (en) * 1988-12-19 1990-12-04 Hughes Aircraft Company High speed programmable divider
US4991187A (en) * 1989-07-21 1991-02-05 Motorola, Inc. High speed prescaler
US4972446A (en) * 1989-08-14 1990-11-20 Delco Electronics Corporation Voltage controlled oscillator using dual modulus divider
FR2748872B1 (fr) * 1990-08-21 1998-11-27 Thomson Trt Defense Synthetiseur de frequence a boucle a verrouillage de phase a division fractionnaire multiple
US5195111A (en) * 1990-09-07 1993-03-16 Nihon Musen Kabushiki Kaisha Programmable frequency dividing apparatus
FR2666706B1 (fr) * 1990-09-12 1993-08-06 Sgs Thomson Microelectronics Compteur/divisdeur rapide et application a un compteur avaleur.
US5111150A (en) * 1990-09-26 1992-05-05 Garmin Corporation Precision phase shift system
US5412795A (en) * 1992-02-25 1995-05-02 Micral, Inc. State machine having a variable timing mechanism for varying the duration of logical output states of the state machine based on variation in the clock frequency
FI923464L (fi) * 1992-07-31 1994-02-01 Nokia Mobile Phones Ltd Foerfarande och system foer alstring av frekvenser i en radiotelefon
DE4303806C2 (de) * 1993-02-10 2002-08-22 Atmel Germany Gmbh Programmierbarer Frequenzzähler
JPH06276095A (ja) * 1993-03-18 1994-09-30 Fujitsu Ltd Ｐｌｌ回路
US5982210A (en) * 1994-09-02 1999-11-09 Sun Microsystems, Inc. PLL system clock generator with instantaneous clock frequency shifting
JPH08234865A (ja) * 1995-02-24 1996-09-13 Canon Inc マイクロコンピュータを有する機器
DE19519321C2 (de) * 1995-05-26 1997-10-16 Gerhard Kultscher Ind Elektron Frequenzteiler mit dualer, aktaler, dezimaler oder hexadezimaler Divisoreingabe
US5614869A (en) * 1995-12-20 1997-03-25 Microclock Incorporated High speed divider for phase-locked loops
US6035182A (en) * 1998-01-20 2000-03-07 Motorola, Inc. Single counter dual modulus frequency division apparatus
RU2127020C1 (ru) * 1998-06-08 1999-02-27 Калугин Василий Васильевич Синтезатор частот
US6445760B1 (en) * 2000-07-14 2002-09-03 Applied Micro Circuits Corporation Partially-synchronous high-speed counter circuits
US6633185B2 (en) * 2001-10-16 2003-10-14 Altera Corporation PLL/DLL circuitry programmable for high bandwidth and low bandwidth applications
US20050036580A1 (en) * 2003-08-12 2005-02-17 Rana Ram Singh Programmable phase-locked loop fractional-N frequency synthesizer
US20050104634A1 (en) * 2003-11-19 2005-05-19 Minoru Fujishima Frequency divider, PLL circuit and semiconductor integrated circuit
KR100666475B1 (ko) * 2004-07-22 2007-01-09 삼성전자주식회사 고속 듀얼 모듈러스 프리스케일러를 구비한 분주기 및분주 방법
US7908080B2 (en) 2004-12-31 2011-03-15 Google Inc. Transportation routing
KR100790984B1 (ko) * 2006-03-03 2008-01-02 삼성전자주식회사 Ｄｏｔ 클럭 신호의 주파수에 관계없이 일정한 주파수의시스템 클럭 신호를 생성하는 디스플레이용 구동 집적회로및 시스템 클럭 신호 생성 방법
US7899147B2 (en) * 2008-06-02 2011-03-01 Mediatek Singapore Pte. Ltd. Counter/divider, and phase locked loop including such counter/divider
GB2533557A (en) * 2014-12-16 2016-06-29 Nordic Semiconductor Asa Frequency divider

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4184068A (en) * 1977-11-14 1980-01-15 Harris Corporation Full binary programmed frequency divider
GB2033178B (en) * 1978-11-02 1983-01-26 Plessey Co Ltd Frequency synthesiser arrangement

Also Published As

Publication number Publication date
CA1173917A (en) 1984-09-04
GB2079999A (en) 1982-01-27
US4633194A (en) 1986-12-30
JPS5718129A (en) 1982-01-29
AU7263281A (en) 1982-02-11
GB2079999B (en) 1985-05-09
AU541058B2 (en) 1984-12-13

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