GB1288974A – – Google Patents
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
1968-09-27
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.)
1968-09-27
Filing date
1969-09-25
Publication date
1972-09-13
1969-09-25
Application filed
filed
Critical
1972-09-13
Publication of GB1288974A
publication
Critical
patent/GB1288974A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
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
1968
1968-09-27
US
US763301A
patent/US3579117A/en
not_active
Expired – Lifetime
1969
1969-09-11
SE
SE12549/69A
patent/SE366180B/xx
unknown
1969-09-19
DE
DE19691947381
patent/DE1947381A1/en
active
Pending
1969-09-19
NL
NL6914261A
patent/NL6914261A/xx
unknown
1969-09-25
GB
GB1288974D
patent/GB1288974A/en
not_active
Expired
1969-09-26
FR
FR6933042A
patent/FR2019088A1/fr
not_active
Withdrawn
1969-09-26
BE
BE739422D
patent/BE739422A/xx
unknown
1969-09-26
JP
JP44076350A
patent/JPS4922071B1/ja
active
Pending
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
JPS4922071B1
(en)
1974-06-05
DE1947381A1
(en)
1970-04-23
SE366180B
(en)
1974-04-08
US3579117A
(en)
1971-05-18
FR2019088A1
(en)
1970-06-26
BE739422A
(en)
1970-03-02
NL6914261A
(en)
1970-04-01
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Legal Events
Date
Code
Title
Description
1973-01-24
PS
Patent sealed [section 19, patents act 1949]
1978-05-04
PLNP
Patent lapsed through nonpayment of renewal fees
