IN2014CN04650A - - Google Patents

Info

Publication number
IN2014CN04650A
IN2014CN04650A IN4650CHN2014A IN2014CN04650A IN 2014CN04650 A IN2014CN04650 A IN 2014CN04650A IN 4650CHN2014 A IN4650CHN2014 A IN 4650CHN2014A IN 2014CN04650 A IN2014CN04650 A IN 2014CN04650A
Authority
IN
India
Application number
Inventor
David J Hoyle
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of IN2014CN04650A publication Critical patent/IN2014CN04650A/en

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
    • G06F1/0356—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
    • 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
    • G06F1/0342—Waveform generators, i.e. devices for generating periodical functions of time, e.g. direct digital synthesizers for generating simultaneously two or more related waveforms, e.g. with different phase angles only
    • 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
    • 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 Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Complex Calculations (AREA)
IN4650CHN2014 2012-01-18 2014-06-19 IN2014CN04650A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261587689P 2012-01-18 2012-01-18
US13/487,804 US8659331B2 (en) 2012-01-18 2012-06-04 High accuracy sin-cos wave and frequency generators, and related systems and methods
PCT/US2013/021844 WO2013109694A1 (en) 2012-01-18 2013-01-17 High accuracy sin-cos wave and frequency generators, and related systems and methods

Publications (1)

Publication Number Publication Date
IN2014CN04650A true IN2014CN04650A (en) 2015-09-18

Family

ID=48779549

Family Applications (1)

Application Number Title Priority Date Filing Date
IN4650CHN2014 IN2014CN04650A (en) 2012-01-18 2014-06-19

Country Status (7)

Country Link
US (1) US8659331B2 (en)
EP (1) EP2805213B1 (en)
JP (1) JP5680811B2 (en)
KR (1) KR101525554B1 (en)
CN (1) CN104067195B (en)
IN (1) IN2014CN04650A (en)
WO (1) WO2013109694A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103795345B (en) 2014-02-13 2016-08-17 深圳市汇顶科技股份有限公司 Sinusoidal wave generating means and method
CN107977044B (en) * 2018-01-17 2023-09-01 优利德科技(中国)股份有限公司 DDS signal generator and linear interpolation method thereof
JP7262028B2 (en) * 2019-07-01 2023-04-21 ラピスセミコンダクタ株式会社 trigonometric function unit

Family Cites Families (29)

* Cited by examiner, † Cited by third party
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US4482974A (en) * 1982-08-13 1984-11-13 Hewlett-Packard Company Apparatus and method of phase-to-amplitude conversion in a sine function generator
US4652832A (en) 1985-07-05 1987-03-24 Motorola, Inc. Frequency resolution in a digital oscillator
US4905177A (en) * 1988-01-19 1990-02-27 Qualcomm, Inc. High resolution phase to sine amplitude conversion
US4878187A (en) 1988-06-22 1989-10-31 The Board Of Trustees Of The Leland Stanford Junior University Apparatus and method for generating a sequence of sines or cosines
JPH0285908A (en) * 1988-07-07 1990-03-27 Matsushita Electric Ind Co Ltd Sine function generating method
US5117231A (en) * 1989-09-22 1992-05-26 Westinghouse Electric Corp. Doppler spectrum synthesizer
US4992743A (en) * 1989-11-15 1991-02-12 John Fluke Mfg. Co., Inc. Dual-tone direct digital synthesizer
US5126960A (en) * 1990-06-21 1992-06-30 Tektronix, Inc. Generation of phase related waveforms
US5467294A (en) 1994-03-09 1995-11-14 Hu; Vince High speed, low power direct digital synthesizer
US5521534A (en) * 1995-06-21 1996-05-28 Dsc Communications Corporation Numerically controlled oscillator for generating a digitally represented sine wave output signal
US5737253A (en) * 1995-08-30 1998-04-07 Pentomics, Inc. Method and apparatus for direct digital frequency synthesizer
US5999581A (en) 1995-09-29 1999-12-07 University Of Waterloo Low-power direct digital frequency synthesizer architecture
US5963607A (en) * 1997-05-02 1999-10-05 Ail Systems, Inc. Direct digital synthesizer with high resolution tracker
US6330578B1 (en) * 1999-06-11 2001-12-11 Nortel Networks Limited Method and apparatus for digitally representing a waveform
JP2001209525A (en) * 2000-01-28 2001-08-03 Matsushita Electric Ind Co Ltd Device for generating trigonometric function
US6333649B1 (en) * 2000-08-31 2001-12-25 Xilinx, Inc. Error feed-forward direct digital synthesis
US6785345B2 (en) * 2001-01-18 2004-08-31 Tektronix, Inc. Frequency dithering for DDS spectral purity
US6657573B2 (en) 2001-08-17 2003-12-02 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Phase to sine amplitude conversion system and method
US6781473B1 (en) * 2001-09-14 2004-08-24 Broadlogic Network Technologies, Inc. High-speed low-power implementation for multi-channel numerically controlled oscillator (NCO)
CN1510861A (en) * 2002-12-26 2004-07-07 华为技术有限公司 Method for controlling system clock frequency
US7440987B1 (en) 2003-02-25 2008-10-21 Qualcomm Incorporated 16 bit quadrature direct digital frequency synthesizer using interpolative angle rotation
JP2007067557A (en) * 2005-08-29 2007-03-15 Agilent Technol Inc Phase control apparatus, frequency control apparatus, oscillator, phase control method, and frequency control method
US7984091B1 (en) * 2005-10-14 2011-07-19 Xilinx, Inc. Quadratic approximation for fast fourier transformation
IL176652A0 (en) * 2006-06-29 2007-08-19 Elisra Electronic Systems Ltd Phase-coherent signal generator
US7890562B2 (en) * 2006-09-29 2011-02-15 Teradyne, Inc. Sine wave generator with dual port look-up table
US7701260B1 (en) * 2007-05-25 2010-04-20 Xilinx, Inc. Phase-to-sinusoid conversion
KR20090065335A (en) * 2007-12-17 2009-06-22 한국전자통신연구원 Numerically-controlled oscillator and operating method for generating cosine and sine signal using only cosine look-up table
US20100194444A1 (en) * 2009-01-30 2010-08-05 Agilent Technolgies, Inc Reduction of spurious frequency components in direct digital synthesis
JP2011151532A (en) * 2010-01-20 2011-08-04 Nippon Dempa Kogyo Co Ltd Frequency generator

Also Published As

Publication number Publication date
US8659331B2 (en) 2014-02-25
US20130181753A1 (en) 2013-07-18
EP2805213B1 (en) 2016-03-30
EP2805213A1 (en) 2014-11-26
KR101525554B1 (en) 2015-06-03
CN104067195B (en) 2015-12-30
WO2013109694A1 (en) 2013-07-25
CN104067195A (en) 2014-09-24
JP5680811B2 (en) 2015-03-04
JP2015506638A (en) 2015-03-02
KR20140114042A (en) 2014-09-25

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