DE3854744T2 - Pseudozufallszitterverfahren und zufallszitterverfahren gegen frequenzsynthese-rauschen. - Google Patents
Pseudozufallszitterverfahren und zufallszitterverfahren gegen frequenzsynthese-rauschen.Info
- Publication number
- DE3854744T2 DE3854744T2 DE3854744T DE3854744T DE3854744T2 DE 3854744 T2 DE3854744 T2 DE 3854744T2 DE 3854744 T DE3854744 T DE 3854744T DE 3854744 T DE3854744 T DE 3854744T DE 3854744 T2 DE3854744 T2 DE 3854744T2
- Authority
- DE
- Germany
- Prior art keywords
- digital
- value
- analog
- random
- sine amplitude
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06J—HYBRID COMPUTING ARRANGEMENTS
- G06J1/00—Hybrid computing arrangements
-
- 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
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
- G06F2211/902—Spectral purity improvement for digital function generators by adding a dither signal, e.g. noise
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/132,348 US4901265A (en) | 1987-12-14 | 1987-12-14 | Pseudorandom dither for frequency synthesis noise |
PCT/US1988/004407 WO1989006009A1 (en) | 1987-12-14 | 1988-12-08 | Pseudorandom dither for frequency synthetis noise |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3854744D1 DE3854744D1 (de) | 1996-01-11 |
DE3854744T2 true DE3854744T2 (de) | 1996-08-08 |
Family
ID=22453607
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3854744T Expired - Lifetime DE3854744T2 (de) | 1987-12-14 | 1988-12-08 | Pseudozufallszitterverfahren und zufallszitterverfahren gegen frequenzsynthese-rauschen. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4901265A (de) |
EP (1) | EP0390868B1 (de) |
JP (1) | JP2823913B2 (de) |
AT (1) | ATE130946T1 (de) |
DE (1) | DE3854744T2 (de) |
WO (1) | WO1989006009A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10357033A1 (de) * | 2003-12-05 | 2005-06-30 | Deutsche Thomson-Brandt Gmbh | Aufzeichungs- und/oder Wiedergabegerät für optische Aufzeichnungsträger mit Mitteln zum Erhöhen der Auflösung eines Digital-Analog-Wandlers im Servoregelkreis |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2229334A (en) * | 1989-03-17 | 1990-09-19 | Philips Electronic Associated | Pulse generators |
US5073869A (en) * | 1989-08-25 | 1991-12-17 | Titan Linkabit Corporation | Suppression of spurious frequency components in direct digital frequency synthesizer |
US4984186A (en) * | 1989-08-25 | 1991-01-08 | Titan Linkabit Corporation | Phase accumulator with dithered incrementing of accumulation due to fine phase components |
US4965531A (en) * | 1989-11-22 | 1990-10-23 | Carleton University | Frequency synthesizers having dividing ratio controlled by sigma-delta modulator |
US4998072A (en) * | 1990-02-20 | 1991-03-05 | John Fluke Mfg. Co., Inc. | High resolution direct digital synthesizer |
GB2242797B (en) * | 1990-04-07 | 1993-12-08 | Ferranti Int Plc | Signal generation using digital-to-analogue conversion |
GB9009722D0 (en) * | 1990-05-01 | 1990-06-20 | Crosfield Electronics Ltd | Improvements relating to colour vignettes |
US5019793A (en) * | 1990-05-21 | 1991-05-28 | Hughes Aircraft Company | Digitally implemented variable phase shifter and amplitude weighting device |
JPH0437205A (ja) * | 1990-05-31 | 1992-02-07 | Sony Corp | 発振装置 |
US5202846A (en) * | 1990-12-19 | 1993-04-13 | Hughes Aircraft Company | Prime number spur reduction for digital synthesis |
US5495505A (en) * | 1990-12-20 | 1996-02-27 | Motorola, Inc. | Increased frequency resolution in a synthesizer |
US6034667A (en) * | 1992-01-21 | 2000-03-07 | Radius Inc. | Method and apparatus for displaying YUV color information on a pseudo-color RGB display |
US5331293A (en) * | 1992-09-02 | 1994-07-19 | Motorola, Inc. | Compensated digital frequency synthesizer |
JPH0763124B2 (ja) * | 1993-02-24 | 1995-07-05 | 日本電気株式会社 | 直接デジタル周波数シンセサイザ |
US5291428A (en) * | 1993-03-02 | 1994-03-01 | Harris Corporation | Apparatus for reducing spurious frequency components in the output signal of a direct digital synthesizer |
US5563596A (en) * | 1994-06-10 | 1996-10-08 | Steinbrecher Corporation | Arrayed analog-to-digital converters |
SE506694C2 (sv) * | 1994-12-12 | 1998-02-02 | Ericsson Telefon Ab L M | Anordning och förfarande för reducering av oönskade frekvenskomponenter vid digital frekvensgenerering |
US5602874A (en) * | 1994-12-29 | 1997-02-11 | Motorola, Inc. | Method and apparatus for reducing quantization noise |
US7123600B2 (en) * | 1995-06-30 | 2006-10-17 | Interdigital Technology Corporation | Initial power control for spread-spectrum communications |
US7020111B2 (en) * | 1996-06-27 | 2006-03-28 | Interdigital Technology Corporation | System for using rapid acquisition spreading codes for spread-spectrum communications |
ZA965340B (en) * | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
US7929498B2 (en) * | 1995-06-30 | 2011-04-19 | Interdigital Technology Corporation | Adaptive forward power control and adaptive reverse power control for spread-spectrum communications |
US6885652B1 (en) * | 1995-06-30 | 2005-04-26 | Interdigital Technology Corporation | Code division multiple access (CDMA) communication system |
GB9616537D0 (en) * | 1996-08-06 | 1996-09-25 | Digi Media Vision Ltd | Digital synthesiser |
US20020051434A1 (en) * | 1997-10-23 | 2002-05-02 | Ozluturk Fatih M. | Method for using rapid acquisition spreading codes for spread-spectrum communications |
FI104768B (fi) | 1998-03-05 | 2000-03-31 | Nokia Networks Oy | Menetelmä häiriöiden vähentämiseksi ja syntetisaattorijärjestely |
FR2780831B1 (fr) * | 1998-07-03 | 2000-09-29 | Thomson Csf | Synthetiseur numerique de signaux |
US7206339B2 (en) | 1999-12-24 | 2007-04-17 | Anritsu Corporation | Wonder generator, digital line tester comprising the same, and phase noise transfer characteristic analyzer |
US6388595B1 (en) * | 2000-02-03 | 2002-05-14 | Tektronix, Inc. | Dithering apparatus to properly represent aliased signals for high speed signal sampling |
US6522176B1 (en) | 2001-11-15 | 2003-02-18 | Itt Manufacturing Enterprises, Inc. | Low spurious direct digital synthesizer |
EP1611684B3 (de) * | 2003-04-02 | 2019-01-02 | Christopher Julian Travis | Methode zur erzeugung eines oszillator-taktsignales |
DE10351604A1 (de) * | 2003-11-05 | 2005-06-02 | Rohde & Schwarz Gmbh & Co. Kg | Frequenzsynthesizer nach dem direkten digitalen Synthese-Verfahren |
DE102004024645B4 (de) * | 2004-05-18 | 2010-03-11 | Infineon Technologies Ag | Verfahren und Vorrichtung zur Reduzierung der Signalbilder am Ausgang eines Digital-Analog-Umsetzers |
US7129753B2 (en) * | 2004-05-26 | 2006-10-31 | Infineon Technologies Ag | Chip to chip interface |
US7026846B1 (en) * | 2004-07-09 | 2006-04-11 | Analog Devices, Inc. | Synthesizer structures and methods that reduce spurious signals |
US7542620B1 (en) * | 2004-08-16 | 2009-06-02 | Apple Inc. | Robust temporal dithering and filtering |
US7933942B2 (en) * | 2006-09-29 | 2011-04-26 | Teradyne, Inc. | Low cost, high purity sign wave generator |
US7554471B2 (en) * | 2006-11-01 | 2009-06-30 | Northrop Grumman Corporation | System and method for improving linearity of a DAC |
US7561085B2 (en) * | 2007-03-21 | 2009-07-14 | Honeywell International Inc. | Systems and methods for improving data converters |
US7557619B1 (en) * | 2008-03-10 | 2009-07-07 | Xilinx, Inc. | Digital frequency synthesis |
KR101085107B1 (ko) * | 2009-12-02 | 2011-11-21 | (주)자람테크놀로지 | 가변 사인파 가중 디지털 아날로그 변환기를 이용한 직접 디지털 주파수 합성기 및 그 방법 |
US9416758B2 (en) | 2012-12-21 | 2016-08-16 | Ford Global Technologies, Llc | Fuel filter |
JP6463336B2 (ja) * | 2014-03-12 | 2019-01-30 | 日本電波工業株式会社 | 周波数信号発生装置 |
RU2586006C1 (ru) * | 2015-05-27 | 2016-06-10 | Закрытое акционерное общество "ОКБ "РИТМ" | Цифровой синтезатор шумовых сигналов |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3633017A (en) * | 1970-01-07 | 1972-01-04 | Sperry Rand Corp | Digital waveform generator |
US3654450A (en) * | 1970-04-03 | 1972-04-04 | Joseph A Webb | Digital signal generator synthesizer |
US4328554A (en) * | 1980-07-03 | 1982-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Programmable frequency synthesizer (PFS) |
US4410954A (en) * | 1980-10-08 | 1983-10-18 | Rockwell International Corporation | Digital frequency synthesizer with random jittering for reducing discrete spectral spurs |
US4454486A (en) * | 1981-11-02 | 1984-06-12 | Hewlett-Packard Company | Waveform synthesis using multiplexed parallel synthesizers |
US4476536A (en) * | 1981-12-17 | 1984-10-09 | International Business Machines Corporation | Digital sine wave synthesizing method and apparatus |
US4727506A (en) * | 1985-03-25 | 1988-02-23 | Rca Corporation | Digital scaling circuitry with truncation offset compensation |
US4652832A (en) * | 1985-07-05 | 1987-03-24 | Motorola, Inc. | Frequency resolution in a digital oscillator |
US5014231A (en) * | 1987-11-23 | 1991-05-07 | Hughes Aircraft Company | Randomized digital/analog converter direct digital synthesizer |
-
1987
- 1987-12-14 US US07/132,348 patent/US4901265A/en not_active Expired - Lifetime
-
1988
- 1988-12-08 DE DE3854744T patent/DE3854744T2/de not_active Expired - Lifetime
- 1988-12-08 EP EP89901402A patent/EP0390868B1/de not_active Expired - Lifetime
- 1988-12-08 AT AT89901402T patent/ATE130946T1/de not_active IP Right Cessation
- 1988-12-08 WO PCT/US1988/004407 patent/WO1989006009A1/en active IP Right Grant
- 1988-12-08 JP JP1501334A patent/JP2823913B2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10357033A1 (de) * | 2003-12-05 | 2005-06-30 | Deutsche Thomson-Brandt Gmbh | Aufzeichungs- und/oder Wiedergabegerät für optische Aufzeichnungsträger mit Mitteln zum Erhöhen der Auflösung eines Digital-Analog-Wandlers im Servoregelkreis |
US7408861B2 (en) | 2003-12-05 | 2008-08-05 | Thomson Licensing | Recording or reproduction apparatus for optical recording media having means for increasing the resolution of a digital-to-analog converter in the servo regulating circuit |
Also Published As
Publication number | Publication date |
---|---|
DE3854744D1 (de) | 1996-01-11 |
ATE130946T1 (de) | 1995-12-15 |
EP0390868A1 (de) | 1990-10-10 |
JPH04502092A (ja) | 1992-04-09 |
EP0390868A4 (en) | 1992-03-11 |
EP0390868B1 (de) | 1995-11-29 |
JP2823913B2 (ja) | 1998-11-11 |
US4901265A (en) | 1990-02-13 |
WO1989006009A1 (en) | 1989-06-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |