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JPS5642403A - Digital periodic waveform generator - Google Patents

Digital periodic waveform generator

Info

Publication number
JPS5642403A
JPS5642403A JP11728779A JP11728779A JPS5642403A JP S5642403 A JPS5642403 A JP S5642403A JP 11728779 A JP11728779 A JP 11728779A JP 11728779 A JP11728779 A JP 11728779A JP S5642403 A JPS5642403 A JP S5642403A
Authority
JP
Japan
Prior art keywords
signal
period
periodic waveform
digital
waveform
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.)
Pending
Application number
JP11728779A
Other languages
Japanese (ja)
Inventor
Kazuo Murano
Kiichi Matsuda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP11728779A priority Critical patent/JPS5642403A/en
Publication of JPS5642403A publication Critical patent/JPS5642403A/en
Pending 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
    • G06F1/035—Reduction of table size
    • G06F1/0353—Reduction of table size by using symmetrical properties of the function, e.g. using most significant bits for quadrant control

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To generate a digital periodic waveform signal with simple hardware by supplying the standard of a digital waveform as a signal regarding time by previously converting amplitude information on an analog waveform into time information. CONSTITUTION:Sampling signal S of period T that determines the coding timing of a digital periodic waveform is applied to the 1st converting circuit 31, which compresses respective periods A1,A2... to the 1st period A1 or less. From S-KA<=A, K is found and what is the order of period of an analog signal with regard to signal S is devided, thereby limiting signal S within period A1. Next, the 2nd converting circuit 32 generates side bit MSB and divides it into periods from output level A1/4 to 4A1/4 and the 3rd converting circuit 33 converts signal S into a finite signal between 0 and A/4. Then, time information on the time axis of signal S and position information on each equal dividing point from ROM35 are compared by comparator 34-1 and one digital periodic waveform signal is outputted from register 34-2.
JP11728779A 1979-09-14 1979-09-14 Digital periodic waveform generator Pending JPS5642403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11728779A JPS5642403A (en) 1979-09-14 1979-09-14 Digital periodic waveform generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11728779A JPS5642403A (en) 1979-09-14 1979-09-14 Digital periodic waveform generator

Publications (1)

Publication Number Publication Date
JPS5642403A true JPS5642403A (en) 1981-04-20

Family

ID=14708002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11728779A Pending JPS5642403A (en) 1979-09-14 1979-09-14 Digital periodic waveform generator

Country Status (1)

Country Link
JP (1) JPS5642403A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703726A (en) * 1985-08-08 1987-11-03 Honda Giken Kogyo Kabushiki Kaisha Lubricating system for engine
WO2004045062A1 (en) * 2002-11-14 2004-05-27 Mitsubishi Denki Kabushiki Kaisha Temperature correction device and voltage control oscillation device
JP2007127664A (en) * 2002-08-26 2007-05-24 Mitsubishi Electric Corp Fm-cw radar device
JP2010011483A (en) * 2009-10-01 2010-01-14 Mitsubishi Electric Corp Temperature correction apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4703726A (en) * 1985-08-08 1987-11-03 Honda Giken Kogyo Kabushiki Kaisha Lubricating system for engine
JP2007127664A (en) * 2002-08-26 2007-05-24 Mitsubishi Electric Corp Fm-cw radar device
WO2004045062A1 (en) * 2002-11-14 2004-05-27 Mitsubishi Denki Kabushiki Kaisha Temperature correction device and voltage control oscillation device
US7248126B2 (en) 2002-11-14 2007-07-24 Mitsubishi Denki Kabushiki Kaisha Temperature correction device and voltage control oscillation device
US7642875B2 (en) 2002-11-14 2010-01-05 Mitsubishi Denki Kabushiki Kaisha Temperature correcting apparatus and voltage-controlled oscillation apparatus
JP2010011483A (en) * 2009-10-01 2010-01-14 Mitsubishi Electric Corp Temperature correction apparatus

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