DE3854887D1 - Digitaloszillator - Google Patents

Digitaloszillator

Info

Publication number
DE3854887D1
DE3854887D1 DE3854887T DE3854887T DE3854887D1 DE 3854887 D1 DE3854887 D1 DE 3854887D1 DE 3854887 T DE3854887 T DE 3854887T DE 3854887 T DE3854887 T DE 3854887T DE 3854887 D1 DE3854887 D1 DE 3854887D1
Authority
DE
Germany
Prior art keywords
digital oscillator
oscillator
digital
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 - Fee Related
Application number
DE3854887T
Other languages
English (en)
Other versions
DE3854887T2 (de
Inventor
Tokikazu Matsumoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE3854887D1 publication Critical patent/DE3854887D1/de
Publication of DE3854887T2 publication Critical patent/DE3854887T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/60—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers
    • G06F7/68—Methods or arrangements for performing computations using a digital non-denominational number representation, i.e. number representation without radix; Computing devices using combinations of denominational and non-denominational quantity representations, e.g. using difunction pulse trains, STEELE computers, phase computers using pulse rate multipliers or dividers pulse rate multipliers or dividers per se
    • 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
    • G06F1/0335—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 the phase increment itself being a composed function of two or more variables, e.g. frequency and phase
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/544—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
    • G06F7/548—Trigonometric functions; Co-ordinate transformations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
    • H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Analysis (AREA)
  • General Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Computing Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Manipulation Of Pulses (AREA)
  • Electrophonic Musical Instruments (AREA)
DE3854887T 1987-10-13 1988-10-13 Digitaloszillator Expired - Fee Related DE3854887T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62257556A JPH0683067B2 (ja) 1987-10-13 1987-10-13 分周装置

Publications (2)

Publication Number Publication Date
DE3854887D1 true DE3854887D1 (de) 1996-02-22
DE3854887T2 DE3854887T2 (de) 1996-08-14

Family

ID=17307923

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3854887T Expired - Fee Related DE3854887T2 (de) 1987-10-13 1988-10-13 Digitaloszillator

Country Status (5)

Country Link
US (1) US4959616A (de)
EP (1) EP0312370B1 (de)
JP (1) JPH0683067B2 (de)
KR (1) KR910006473B1 (de)
DE (1) DE3854887T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998072A (en) * 1990-02-20 1991-03-05 John Fluke Mfg. Co., Inc. High resolution direct digital synthesizer
JPH0437205A (ja) * 1990-05-31 1992-02-07 Sony Corp 発振装置
EP0486851A3 (en) * 1990-11-19 1993-04-07 Tektronix Inc. Direct digital synthesizer with feedback shift register
US5495505A (en) * 1990-12-20 1996-02-27 Motorola, Inc. Increased frequency resolution in a synthesizer
KR0165279B1 (ko) * 1992-11-27 1999-03-20 김광호 저역변환 색신호 처리장치
US5361046A (en) * 1992-12-22 1994-11-01 Hughes Aircraft Company Modulator having fractional sample/symbol time
US5638010A (en) * 1995-06-07 1997-06-10 Analog Devices, Inc. Digitally controlled oscillator for a phase-locked loop providing a residue signal for use in continuously variable interpolation and decimation filters
FR2757001B1 (fr) * 1996-12-05 1999-02-05 Sgs Thomson Microelectronics Dispositif de decoupage de la periode d'un signal en n parties quasi-egales
JP2002182898A (ja) * 2000-12-14 2002-06-28 Nec Microsystems Ltd 積算値及び周期関数の生成方法及び回路
US7064616B2 (en) 2003-12-29 2006-06-20 Teradyne, Inc. Multi-stage numeric counter oscillator
CN1797955B (zh) * 2004-12-29 2011-08-24 泰拉丁公司 多级数字计数振荡器
US7944251B2 (en) * 2009-03-09 2011-05-17 Broadcom Corporation Reduced line driver output dependency on process, voltage, and temperature variations

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858434A (en) * 1956-09-25 1958-10-28 Collins Radio Co Precision step voltage generator
US3121803A (en) * 1959-05-28 1964-02-18 Zenith Radio Corp Stair-step counter with pulse storage capacitor triggering, via anti-leakage diode, transistor blocking oscillator
US3657657A (en) * 1970-08-03 1972-04-18 William T Jefferson Digital sine wave generator
US3919649A (en) * 1973-10-31 1975-11-11 Rca Corp Staircase waveform generator
FR2511564A1 (fr) * 1981-08-17 1983-02-18 Thomson Csf Synthetiseur de frequences a division fractionnaire, utilise pour une modulation angulaire numerique
JPS58165416A (ja) * 1982-03-26 1983-09-30 Hitachi Ltd 可変段数階段波発生回路
JPS58181315A (ja) * 1982-04-16 1983-10-24 Nec Corp 階段波発生回路
GB8432552D0 (en) * 1984-12-21 1985-02-06 Plessey Co Plc Control circuits
GB2177862B (en) * 1985-07-09 1989-07-19 Motorola Inc Waveform generators
JPS62150922A (ja) * 1985-12-24 1987-07-04 Matsushita Electric Ind Co Ltd デジタル発振装置
US4737720A (en) * 1986-01-06 1988-04-12 General Electric Company DTMF generation using pre-summed tables
US4804863A (en) * 1986-11-12 1989-02-14 Crystal Semiconductor Corporation Method and circuitry for generating reference voltages

Also Published As

Publication number Publication date
DE3854887T2 (de) 1996-08-14
US4959616A (en) 1990-09-25
EP0312370A3 (de) 1991-03-20
JPH0199322A (ja) 1989-04-18
JPH0683067B2 (ja) 1994-10-19
EP0312370A2 (de) 1989-04-19
EP0312370B1 (de) 1996-01-10
KR890007499A (ko) 1989-06-20
KR910006473B1 (ko) 1991-08-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee