DE69023979D1 - Digitale Signalverarbeitung. - Google Patents

Digitale Signalverarbeitung.

Info

Publication number
DE69023979D1
DE69023979D1 DE69023979T DE69023979T DE69023979D1 DE 69023979 D1 DE69023979 D1 DE 69023979D1 DE 69023979 T DE69023979 T DE 69023979T DE 69023979 T DE69023979 T DE 69023979T DE 69023979 D1 DE69023979 D1 DE 69023979D1
Authority
DE
Germany
Prior art keywords
sine
values
cosine
sequence
spaced
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
DE69023979T
Other languages
English (en)
Other versions
DE69023979T2 (de
Inventor
Larry Frederick Lind
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.)
British Telecommunications PLC
Original Assignee
British Telecommunications PLC
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 British Telecommunications PLC filed Critical British Telecommunications PLC
Application granted granted Critical
Publication of DE69023979D1 publication Critical patent/DE69023979D1/de
Publication of DE69023979T2 publication Critical patent/DE69023979T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/17—Function evaluation by approximation methods, e.g. inter- or extrapolation, smoothing, least mean square method
    • 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
    • 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
    • G06F1/0356—Reduction of table size by using two or more smaller tables, e.g. addressed by parts of the argument
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2101/00—Indexing scheme relating to the type of digital function generated
    • G06F2101/04—Trigonometric functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • Complex Calculations (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Stereo-Broadcasting Methods (AREA)
DE69023979T 1989-08-11 1990-08-09 Digitale Signalverarbeitung. Expired - Fee Related DE69023979T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB898918337A GB8918337D0 (en) 1989-08-11 1989-08-11 Digital signal processing

Publications (2)

Publication Number Publication Date
DE69023979D1 true DE69023979D1 (de) 1996-01-18
DE69023979T2 DE69023979T2 (de) 1996-04-25

Family

ID=10661483

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69023979T Expired - Fee Related DE69023979T2 (de) 1989-08-11 1990-08-09 Digitale Signalverarbeitung.

Country Status (6)

Country Link
US (1) US5146418A (de)
EP (1) EP0412826B1 (de)
AT (1) ATE131293T1 (de)
DE (1) DE69023979T2 (de)
GB (2) GB8918337D0 (de)
HK (1) HK132596A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728706A1 (fr) * 1994-12-21 1996-06-28 Philips Electronique Lab Circuit d'interpolation pour fonctions trigonometriques
US6677513B1 (en) 1998-05-29 2004-01-13 International Business Machines Corporation System and method for generating and attenuating digital tones
US6661852B1 (en) 1999-07-21 2003-12-09 Raytheon Company Apparatus and method for quadrature tuner error correction
US6640237B1 (en) * 1999-07-27 2003-10-28 Raytheon Company Method and system for generating a trigonometric function
US6647075B1 (en) 2000-03-17 2003-11-11 Raytheon Company Digital tuner with optimized clock frequency and integrated parallel CIC filter and local oscillator
US6590948B1 (en) 2000-03-17 2003-07-08 Raytheon Company Parallel asynchronous sample rate reducer
US6465110B1 (en) 2000-10-10 2002-10-15 Material Sciences Corporation Metal felt laminate structures
US7379493B2 (en) * 2004-06-07 2008-05-27 Lockheed Martin Corporation Signal analyzer for detecting distortions in signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5865493A (ja) * 1981-10-15 1983-04-19 松下電器産業株式会社 波形発生装置
JPS5880766A (ja) * 1981-11-06 1983-05-14 Hitachi Medical Corp 自乗和開平計算回路
JPH0631990B2 (ja) * 1984-01-07 1994-04-27 カシオ計算機株式会社 波形の補間装置
EP0259514A1 (de) * 1986-09-11 1988-03-16 Deutsche ITT Industries GmbH Digitalschaltung zur gleichzeitigen Erzeugung von digitalen Sinus- und Cosinusfunktionswerten
JPS63186329A (ja) * 1987-01-28 1988-08-01 Nec Corp 三角関数前処理装置

Also Published As

Publication number Publication date
EP0412826A1 (de) 1991-02-13
GB8918337D0 (en) 1989-09-20
GB2235315A (en) 1991-02-27
EP0412826B1 (de) 1995-12-06
US5146418A (en) 1992-09-08
GB9017525D0 (en) 1990-09-26
GB2235315B (en) 1993-07-21
ATE131293T1 (de) 1995-12-15
DE69023979T2 (de) 1996-04-25
HK132596A (en) 1996-08-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee