GB1464685A - Circuit arrangement for forming a sum and/or difference signal - Google Patents

Circuit arrangement for forming a sum and/or difference signal

Info

Publication number
GB1464685A
GB1464685A GB1703075A GB1703075A GB1464685A GB 1464685 A GB1464685 A GB 1464685A GB 1703075 A GB1703075 A GB 1703075A GB 1703075 A GB1703075 A GB 1703075A GB 1464685 A GB1464685 A GB 1464685A
Authority
GB
United Kingdom
Prior art keywords
counters
pulses
input
sum
counter
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
GB1703075A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1464685A publication Critical patent/GB1464685A/en
Expired legal-status Critical Current

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
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
    • H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers

Landscapes

  • Manipulation Of Pulses (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
GB1703075A 1974-04-27 1975-04-24 Circuit arrangement for forming a sum and/or difference signal Expired GB1464685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2420638A DE2420638A1 (de) 1974-04-27 1974-04-27 Schaltungsanordnung zur erzeugung eines summen- und/oder differenzsignals

Publications (1)

Publication Number Publication Date
GB1464685A true GB1464685A (en) 1977-02-16

Family

ID=5914216

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1703075A Expired GB1464685A (en) 1974-04-27 1975-04-24 Circuit arrangement for forming a sum and/or difference signal

Country Status (5)

Country Link
US (1) US3982109A (enExample)
JP (1) JPS5214580B2 (enExample)
DE (1) DE2420638A1 (enExample)
FR (1) FR2269240B1 (enExample)
GB (1) GB1464685A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143650A (en) * 1976-10-06 1979-03-13 Hoffmann-La Roche Inc. Directional doppler ultrasound systems for biosignal acquisition and method of using the same
US4115860A (en) * 1977-06-02 1978-09-19 Lockheed Electronics Co., Inc. Plural load power controller with time-shared processor
DE4126915A1 (de) * 1991-08-14 1993-02-18 Siemens Ag Integrierter frequenzsynthesizer-schaltkreis fuer sende-und empfangsbetrieb
FR2936606B1 (fr) * 2008-10-01 2010-09-10 Schneider Electric Ind Sas Dispositif et procede de mesure de frequence dans un module automate

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3448389A (en) * 1965-10-04 1969-06-03 Hitachi Ltd Differential frequency rate system for providing a pulse train output corresponding to the frequency difference between two input pulse trains
NL6704376A (enExample) * 1967-03-25 1968-09-26
US3626307A (en) * 1969-02-14 1971-12-07 Iwasaki Tsushinki Kaisha A K A Counting system for measuring a difference between frequencies of two signals
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
US3644721A (en) * 1970-11-09 1972-02-22 Gen Motors Corp Apparatus and method for digital frequency addition and subtraction
FR2122377B1 (enExample) * 1971-01-22 1976-05-28 Labo Electro Autom Dauph
BE792458A (fr) * 1971-12-10 1973-03-30 Telettra Lab Telefon Systeme et dispositif d'un detecteur phase-frequence entre signaux electriques

Also Published As

Publication number Publication date
JPS50150349A (enExample) 1975-12-02
JPS5214580B2 (enExample) 1977-04-22
US3982109A (en) 1976-09-21
DE2420638A1 (de) 1976-03-18
FR2269240B1 (enExample) 1979-03-23
FR2269240A1 (enExample) 1975-11-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee