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GB2181005A - Electrical waveform generator means and methods - Google Patents

Electrical waveform generator means and methods

Info

Publication number
GB2181005A
GB2181005A GB08623779A GB8623779A GB2181005A GB 2181005 A GB2181005 A GB 2181005A GB 08623779 A GB08623779 A GB 08623779A GB 8623779 A GB8623779 A GB 8623779A GB 2181005 A GB2181005 A GB 2181005A
Authority
GB
United Kingdom
Prior art keywords
waveform
points
memory
digital
waveform generator
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
GB08623779A
Other versions
GB2181005B (en
GB8623779D0 (en
Inventor
Lester Brodeur
John F Melville
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.)
Analogic Corp
Original Assignee
Analogic 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 Analogic Corp filed Critical Analogic Corp
Publication of GB8623779D0 publication Critical patent/GB8623779D0/en
Publication of GB2181005A publication Critical patent/GB2181005A/en
Application granted granted Critical
Publication of GB2181005B publication Critical patent/GB2181005B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/02—Digital function generators
    • G06F1/03—Digital function generators working, at least partly, by table look-up
    • G06F1/0321—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers
    • G06F1/0328—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers in which the phase increment is adjustable, e.g. by using an adder-accumulator

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Feedback Control In General (AREA)
  • Complex Calculations (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

An electrical waveform generator and a method for electrical waveform generation are provided which includes a central processing unit (13) to first provide sequential points of a selectable waveform in digital form and store them in digital memory (15). A memory controller (14) then generates the waveform by sequencing those points through a digital-to-analog converter (17). Previous instruments required large memory capacity to handle all of the data points necessary to produce a wide variety of waveforms. The present invention uses mathematical notation to define and store selectable waveforms and calculates the data points when a curve is selected or defined for use. Memory controller (14) uses concatenated looping during the sequencing of points to the converter (17) for the purpose of making the data memory (15) more efficient. The single waveform generator of the present invention may be used in all of the various applications of waveform generators including automated test equipment having industry standard communications buses for control.
GB08623779A 1985-02-01 1986-01-29 Electrical waveform generator Expired GB2181005B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69756285A 1985-02-01 1985-02-01

Publications (3)

Publication Number Publication Date
GB8623779D0 GB8623779D0 (en) 1986-11-05
GB2181005A true GB2181005A (en) 1987-04-08
GB2181005B GB2181005B (en) 1988-10-05

Family

ID=24801612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08623779A Expired GB2181005B (en) 1985-02-01 1986-01-29 Electrical waveform generator

Country Status (4)

Country Link
JP (1) JPS62501997A (en)
DE (1) DE3690056T1 (en)
GB (1) GB2181005B (en)
WO (1) WO1986004702A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2649559A1 (en) * 1989-07-10 1991-01-11 Commissariat Energie Atomique SIGNAL GENERATOR WITH PROGRAMMABLE LOGIC STATES
US6038578A (en) * 1990-11-21 2000-03-14 Fogg; Harold T. Method and system for generating a series of waveform definitions
US5631926A (en) * 1991-04-09 1997-05-20 Holness; Peter J. Apparatus for compressing data by providing a coded message indicative of the data and method of using same
GB9108467D0 (en) * 1991-04-19 1991-06-05 British Aerospace Waveform generation
DE4435183C2 (en) * 1994-09-30 2000-04-20 Siemens Ag Method for operating a magnetic resonance device

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621228A (en) * 1969-09-24 1971-11-16 Nasa Digital function generator
US3772681A (en) * 1970-10-14 1973-11-13 Post Office Frequency synthesiser
US3822380A (en) * 1973-05-25 1974-07-02 Gen Dynamics Corp Digitally controlled signal generator
US3913028A (en) * 1974-04-22 1975-10-14 Rca Corp Phase locked loop including an arithmetic unit
US3922536A (en) * 1974-05-31 1975-11-25 Rca Corp Multionomial processor system
US3952189A (en) * 1975-02-27 1976-04-20 Bell Telephone Laboratories, Incorporated Complex analog waveform generator
US3967100A (en) * 1973-11-12 1976-06-29 Naonobu Shimomura Digital function generator utilizing cascade accumulation
US3978326A (en) * 1974-12-27 1976-08-31 Naonobu Shimomura Digital polynomial function generator
US4072851A (en) * 1976-03-26 1978-02-07 Norland Corporation Waveform measuring instrument with resident programmed processor for controlled waveform display and waveform data reduction and calculation
US4255790A (en) * 1978-09-25 1981-03-10 Hondeghem Luc M Programmable pulse generating system
US4283768A (en) * 1979-04-30 1981-08-11 The United States Of America As Represented By The Secretary Of The Navy Signal generator
US4346448A (en) * 1978-11-23 1982-08-24 The General Electric Company, Limited Generation of electric signals having approximately sinusoidal waveforms
US4355367A (en) * 1979-03-07 1982-10-19 Sharp Kabushiki Kaisha Waveform synthesizer arrangement
US4438503A (en) * 1980-05-13 1984-03-20 The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Waveform synthesizers
US4495586A (en) * 1982-07-29 1985-01-22 Tektronix, Inc. Waveform acquisition apparatus and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656005A (en) * 1979-10-12 1981-05-16 Shimadzu Corp Random-waveform generator
US4316259A (en) * 1980-03-18 1982-02-16 Grumman Aerospace Corporation Programmable function generator
JPS58175304A (en) * 1982-04-07 1983-10-14 Teac Co digital signal generator

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3621228A (en) * 1969-09-24 1971-11-16 Nasa Digital function generator
US3772681A (en) * 1970-10-14 1973-11-13 Post Office Frequency synthesiser
US3822380A (en) * 1973-05-25 1974-07-02 Gen Dynamics Corp Digitally controlled signal generator
US3967100A (en) * 1973-11-12 1976-06-29 Naonobu Shimomura Digital function generator utilizing cascade accumulation
US3913028A (en) * 1974-04-22 1975-10-14 Rca Corp Phase locked loop including an arithmetic unit
US3922536A (en) * 1974-05-31 1975-11-25 Rca Corp Multionomial processor system
US3978326A (en) * 1974-12-27 1976-08-31 Naonobu Shimomura Digital polynomial function generator
US3952189A (en) * 1975-02-27 1976-04-20 Bell Telephone Laboratories, Incorporated Complex analog waveform generator
US4072851A (en) * 1976-03-26 1978-02-07 Norland Corporation Waveform measuring instrument with resident programmed processor for controlled waveform display and waveform data reduction and calculation
US4255790A (en) * 1978-09-25 1981-03-10 Hondeghem Luc M Programmable pulse generating system
US4346448A (en) * 1978-11-23 1982-08-24 The General Electric Company, Limited Generation of electric signals having approximately sinusoidal waveforms
US4355367A (en) * 1979-03-07 1982-10-19 Sharp Kabushiki Kaisha Waveform synthesizer arrangement
US4283768A (en) * 1979-04-30 1981-08-11 The United States Of America As Represented By The Secretary Of The Navy Signal generator
US4438503A (en) * 1980-05-13 1984-03-20 The Secretary Of State For Industry In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Waveform synthesizers
US4495586A (en) * 1982-07-29 1985-01-22 Tektronix, Inc. Waveform acquisition apparatus and method

Also Published As

Publication number Publication date
JPH0471211B2 (en) 1992-11-13
GB2181005B (en) 1988-10-05
JPS62501997A (en) 1987-08-06
DE3690056T1 (en) 1987-03-12
GB8623779D0 (en) 1986-11-05
WO1986004702A1 (en) 1986-08-14

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19940129