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GB1288974A - - Google Patents

Info

Publication number
GB1288974A
GB1288974A GB1288974DA GB1288974A GB 1288974 A GB1288974 A GB 1288974A GB 1288974D A GB1288974D A GB 1288974DA GB 1288974 A GB1288974 A GB 1288974A
Authority
GB
United Kingdom
Prior art keywords
waveform
derived
pulses
square wave
parts
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
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 filed Critical
Publication of GB1288974A publication Critical patent/GB1288974A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Manipulation Of Pulses (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

1288974 Waveform synthesis WESTERN ELECTRIC CO Inc 25 Sept 1969 [27 Sept 1968] 47161/69 Heading H3T In apparatus for synthesizing a waveform such as parts of a sine wafevorm C are combined with parts of a half frequency sine waveform D by means of gates opened at times selected by pulses derived from waveform C so as to provide the required pulse waveform E. In Fig. 2 (not shown) waveform C is derived from a low-pass filter fed with a master square wave. Waveform D is similarly derived from a bi-stable circuit fed from the square wave. Pulses J ... P are derived by logic circuits fed from a ring counter (Fig. 4, not shown) driven by the master square wave. Pulses J ... P open gates which pass the selected parts of waveforms C and D to a combining and low-pass filter circuit.
GB1288974D 1968-09-27 1969-09-25 Expired GB1288974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76330168A 1968-09-27 1968-09-27

Publications (1)

Publication Number Publication Date
GB1288974A true GB1288974A (en) 1972-09-13

Family

ID=25067439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1288974D Expired GB1288974A (en) 1968-09-27 1969-09-25

Country Status (8)

Country Link
US (1) US3579117A (en)
JP (1) JPS4922071B1 (en)
BE (1) BE739422A (en)
DE (1) DE1947381A1 (en)
FR (1) FR2019088A1 (en)
GB (1) GB1288974A (en)
NL (1) NL6914261A (en)
SE (1) SE366180B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247792A (en) * 1990-08-31 1992-03-11 Philips Electronic Associated Sinewave generators

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733555A (en) * 1970-08-19 1973-05-15 Marshall Research & Dev Corp Shock spectrum analyzer and synthesizer system
US3671871A (en) * 1970-12-14 1972-06-20 Northrop Corp Signal frequency synthesizer
US3873928A (en) * 1972-03-08 1975-03-25 Gen Electric Reference wave generator using logic circuitry for providing substantially sinusoidal output
US3801807A (en) * 1972-10-27 1974-04-02 Bell Telephone Labor Inc Improved shift register having (n/2 - 1) stages for digitally synthesizing an n-phase sinusoidal waveform
FR2298905A1 (en) * 1973-06-13 1976-08-20 Commissariat Energie Atomique METHOD AND DEVICE FOR EMISSION OF SINE WAVE TRAINS
US4137500A (en) * 1976-12-07 1979-01-30 Weber Harold J Frequency dependent amplitude modulated exciter apparatus
US4783632A (en) * 1986-07-03 1988-11-08 Hughes Aircraft Company Multi-arm frequency sweep generator
US5121069A (en) * 1988-12-16 1992-06-09 Siemens Transmission Systems, Inc. Low frequency sinewave generator
US5091699A (en) * 1990-11-14 1992-02-25 General Electric Company Frequency division network having low phase noise
US5332975A (en) * 1992-12-01 1994-07-26 Netmedia Inc. Sine wave generator utilizing variable encoding for different frequency signals
DE4408323C2 (en) * 1994-03-11 1999-03-11 Siemens Ag Method for generating a digital sinusoidal signal with a predetermined sampling rate and circuit arrangement for carrying out the method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE24053E (en) * 1949-01-11 1955-08-23 Source
US2566085A (en) * 1949-02-26 1951-08-28 Rca Corp Electronic interval timing method and system
US3223925A (en) * 1962-01-29 1965-12-14 Ibm Digital data modulation device
US3319170A (en) * 1963-03-28 1967-05-09 Raytheon Co Trigger pulse threshold level adjustment circuit
US3349257A (en) * 1965-10-22 1967-10-24 Int Research & Dev Co Ltd Sine wave synthesis circuit
US3325721A (en) * 1966-03-18 1967-06-13 Albert A Clark Variable frequency changer with means for continuously changing phase of the input frequency signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2247792A (en) * 1990-08-31 1992-03-11 Philips Electronic Associated Sinewave generators

Also Published As

Publication number Publication date
SE366180B (en) 1974-04-08
DE1947381A1 (en) 1970-04-23
JPS4922071B1 (en) 1974-06-05
NL6914261A (en) 1970-04-01
US3579117A (en) 1971-05-18
FR2019088A1 (en) 1970-06-26
BE739422A (en) 1970-03-02

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees