CA2011029A1 - Circuit detecteur de frequence - Google Patents

Circuit detecteur de frequence

Info

Publication number
CA2011029A1
CA2011029A1 CA2011029A CA2011029A CA2011029A1 CA 2011029 A1 CA2011029 A1 CA 2011029A1 CA 2011029 A CA2011029 A CA 2011029A CA 2011029 A CA2011029 A CA 2011029A CA 2011029 A1 CA2011029 A1 CA 2011029A1
Authority
CA
Canada
Prior art keywords
frequency detector
detector circuit
clock signal
circuit
synchronizer
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
Application number
CA2011029A
Other languages
English (en)
Other versions
CA2011029C (fr
Inventor
Leland Gary Wiren
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.)
AG Communication Systems Corp
Original Assignee
AG Communication Systems Corp
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 AG Communication Systems Corp filed Critical AG Communication Systems Corp
Publication of CA2011029A1 publication Critical patent/CA2011029A1/fr
Application granted granted Critical
Publication of CA2011029C publication Critical patent/CA2011029C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D13/00—Circuits for comparing the phase or frequency of two mutually-independent oscillations

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manipulation Of Pulses (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA002011029A 1989-02-28 1990-02-27 Circuit detecteur de frequence Expired - Fee Related CA2011029C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/316,750 US4975594A (en) 1989-02-28 1989-02-28 Frequency detector circuit
US316,750 1989-02-28

Publications (2)

Publication Number Publication Date
CA2011029A1 true CA2011029A1 (fr) 1990-08-31
CA2011029C CA2011029C (fr) 1995-10-03

Family

ID=23230502

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002011029A Expired - Fee Related CA2011029C (fr) 1989-02-28 1990-02-27 Circuit detecteur de frequence

Country Status (2)

Country Link
US (1) US4975594A (fr)
CA (1) CA2011029C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5392347A (en) * 1992-02-19 1995-02-21 Nec Corporation Ringing tone signal detecting circuit
US6020765A (en) * 1997-05-30 2000-02-01 Sun Microsystems, Inc. Frequency difference detector for use with an NRZ signal
CN101447859B (zh) * 2008-12-26 2012-07-18 华为技术有限公司 检测时钟频率偏差的方法及其装置
CN101582732B (zh) * 2009-06-10 2012-07-04 中兴通讯股份有限公司 一种时钟检测的方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3350580A (en) * 1965-11-30 1967-10-31 Sperry Rand Corp Monitor employing logic gate and counter to indicate normal pulse-train failure after predetermined time interval
US4144448A (en) * 1977-11-29 1979-03-13 International Business Machines Corporation Asynchronous validity checking system and method for monitoring clock signals on separate electrical conductors
JPS54112150A (en) * 1978-02-23 1979-09-01 Sanyo Electric Co Ltd Pulse interrupt detection circuit
US4427948A (en) * 1981-12-21 1984-01-24 Gte Automatic Electric Labs Inc. Pulse toggle monitor circuit
JPH0758888B2 (ja) * 1987-05-12 1995-06-21 三菱電機株式会社 信号脱落検出回路

Also Published As

Publication number Publication date
CA2011029C (fr) 1995-10-03
US4975594A (en) 1990-12-04

Similar Documents

Publication Publication Date Title
CA2152180A1 (fr) Procede et circuit de synchronisation a boucle a phase asservie
EP0187504A3 (fr) Corrélateur numérique de phase
EP0218406A3 (fr) Circuit pour la génération d'une horloge d'échantillonnage
CA2125260A1 (fr) Dispositif et methode de commande automatique de la frequence
AU5912290A (en) Quadrature demodulation of a data sequence following a particular signal sequence with a local reference carrier signal having a frequency different from a received carrier signal
EP0282202A3 (fr) Circuit de recherche et de synchronisation de préambule
HK53081A (en) Electronic timepiece
DE3586508T2 (de) Phasendetektor.
EP0588656A3 (en) Digital pll circuit having signal edge position measurement
EP0360691A3 (fr) Appareil de réception d'un signal numérique
AR242878A1 (es) Disposicion de circuito para derivar una senal de reloj auxiliar de datos a partir de la frecuencia y/o de la fase de reloj de una senal digital sincronica o plesiocronica.
CA2011029A1 (fr) Circuit detecteur de frequence
GB8727955D0 (en) Control circuit for local oscillator of optical homodyne/heterodyne receiver of phase shift keying system
FR2618958B1 (fr) Synthetiseur de frequences presentant un dispositif indicateur d'accord
EP0645910A3 (fr) Circuit pour l'obtention précise de l'information d'horloge d'un signal reçu.
EP0367548A3 (en) Sync detection circuit for phase-locked loop having frequency divider
EP0313206A3 (fr) Détecteur de fréquence pour boucle d'asservissement de fréquence
AU5749390A (en) Method and circuit for generating dependent clock signals
AU5505596A (en) Interrogator for electronic identification system
EP0231071A3 (fr) Emetteur à réseau à commande de phase
EP0610052A3 (fr) Méthode et appareil pour la commande d'horloge.
EP0381270A3 (fr) Oscillateur LC stabilisé et commuté à stabilité élevée
EP0353027A3 (fr) Circuit programmable pour avancer des signaux
AU7362091A (en) A signal detecting circuit for detecting a signal specified in a designated frequency
EP0274841A3 (fr) Traitement des transmissions en quadrature

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed