DE69121777T2 - Digital gesteuerter Oszillator - Google Patents

Digital gesteuerter Oszillator

Info

Publication number
DE69121777T2
DE69121777T2 DE69121777T DE69121777T DE69121777T2 DE 69121777 T2 DE69121777 T2 DE 69121777T2 DE 69121777 T DE69121777 T DE 69121777T DE 69121777 T DE69121777 T DE 69121777T DE 69121777 T2 DE69121777 T2 DE 69121777T2
Authority
DE
Germany
Prior art keywords
controlled oscillator
digitally controlled
digitally
oscillator
controlled
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 - Lifetime
Application number
DE69121777T
Other languages
English (en)
Other versions
DE69121777D1 (de
Inventor
Katsuya Hori
Biichiro Mornaga
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE69121777D1 publication Critical patent/DE69121777D1/de
Publication of DE69121777T2 publication Critical patent/DE69121777T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • H03L7/0991—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider
    • H03L7/0994—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop the oscillator being a digital oscillator, e.g. composed of a fixed oscillator followed by a variable frequency divider comprising an accumulator
    • 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)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DE69121777T 1990-05-31 1991-05-29 Digital gesteuerter Oszillator Expired - Lifetime DE69121777T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2143087A JPH0437205A (ja) 1990-05-31 1990-05-31 発振装置

Publications (2)

Publication Number Publication Date
DE69121777D1 DE69121777D1 (de) 1996-10-10
DE69121777T2 true DE69121777T2 (de) 1997-01-16

Family

ID=15330611

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69121777T Expired - Lifetime DE69121777T2 (de) 1990-05-31 1991-05-29 Digital gesteuerter Oszillator

Country Status (4)

Country Link
US (1) US5153526A (de)
EP (1) EP0459446B1 (de)
JP (1) JPH0437205A (de)
DE (1) DE69121777T2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5495505A (en) * 1990-12-20 1996-02-27 Motorola, Inc. Increased frequency resolution in a synthesizer
US5130671A (en) * 1990-12-26 1992-07-14 Hughes Aircraft Company Phase-locked loop frequency tracking device including a direct digital synthesizer
US5361046A (en) * 1992-12-22 1994-11-01 Hughes Aircraft Company Modulator having fractional sample/symbol time
FI93505C (fi) * 1993-05-03 1995-04-10 Nokia Telecommunications Oy Numeerisesti ohjattu oskillaattori ja digitaalinen vaihelukittu silmukka
US5365182A (en) * 1993-06-22 1994-11-15 Motorola, Inc. Method and apparatus for low power clock generation for high speed applications
CA2125113A1 (en) * 1993-08-31 1995-03-01 Francesco Ledda Method and circuitry for aligning the phase of high-speed clocks in telecommunications systems
JPH07193564A (ja) * 1993-12-25 1995-07-28 Nec Corp クロック再生装置および再生方法
US7002475B2 (en) * 1997-12-31 2006-02-21 Intermec Ip Corp. Combination radio frequency identification transponder (RFID tag) and magnetic electronic article surveillance (EAS) tag
US6167102A (en) * 1998-08-03 2000-12-26 Telefonaktiebolaget Lm Ericsson (Publ) System and method employing a reduced NCO lookup table
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
FR2832271A1 (fr) * 2001-11-13 2003-05-16 Koninkl Philips Electronics Nv Tuner comprenant un convertisseur de tension
US7064616B2 (en) * 2003-12-29 2006-06-20 Teradyne, Inc. Multi-stage numeric counter oscillator

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824498A (en) * 1972-12-22 1974-07-16 Dallas Instr Inc Digital processor for selectively synthesizing sinusoidal waveforms and frequency modulations
US3973209A (en) * 1975-08-29 1976-08-03 Rca Corporation Digital arithmetic synthesizer phase lock loop with direct doppler and frequency readout
US4652832A (en) * 1985-07-05 1987-03-24 Motorola, Inc. Frequency resolution in a digital oscillator
JPH0683067B2 (ja) * 1987-10-13 1994-10-19 松下電器産業株式会社 分周装置
US4901265A (en) * 1987-12-14 1990-02-13 Qualcomm, Inc. Pseudorandom dither for frequency synthesis noise

Also Published As

Publication number Publication date
US5153526A (en) 1992-10-06
EP0459446A1 (de) 1991-12-04
JPH0437205A (ja) 1992-02-07
EP0459446B1 (de) 1996-09-04
DE69121777D1 (de) 1996-10-10

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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)