CO4790202A1 - Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta - Google Patents
Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-deltaInfo
- Publication number
- CO4790202A1 CO4790202A1 CO98029413A CO98029413A CO4790202A1 CO 4790202 A1 CO4790202 A1 CO 4790202A1 CO 98029413 A CO98029413 A CO 98029413A CO 98029413 A CO98029413 A CO 98029413A CO 4790202 A1 CO4790202 A1 CO 4790202A1
- Authority
- CO
- Colombia
- Prior art keywords
- signal
- integrated
- sigma
- noise reduction
- periodic noise
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
- H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/02—Delta modulation, i.e. one-bit differential modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3033—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs
- H03M7/304—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator having a higher order loop filter in the feedforward path, e.g. with distributed feedforward inputs with distributed feedback, i.e. with feedback paths from the quantiser output to more than one filter stage
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
Un método de modulación sigma-delta, el cual es realizadocon una reducción de ruido periódico y comprende los siguientes pasos: a) al menos una primera integración (200) de una señal (209, Fig. 2), correspondiente a una señal de entrada (103) agregada a una señal de salida (106) multiplicada por un factor predeterminado (k), mediante lo cual se obtiene una señal integrada (210); b) al menos una segunda integración (201) de dicha primera señal integrada (210) agregada a una primera señal (218), mediante lo cual se obtiene una segunda señal integrada (212); c) cuantificación (202) de dicha segunda señal integrada (212) agregada a una segunda señal (217), mediante lo cual se obtiene dicha salida de señal (106), caracterizado en que dicho método incluye los siguientes pasos: - agregar dicha primera señal (218) a un bit previamente determinado en dicha primera señal integrada (210), con lo cual la primera señal (218) es constituida por un mapa de bits de cierto período que es relativamente corto en relación con el período de dicha segunda señal (217); y - agregar dicha segunda señal (217) a al menos un bit significativo de dicha segunda señal integrada (212), con lo cual la segunda señal (217), es constituida por una señal seudo aleatoria de cierto
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9701986A SE509408C2 (sv) | 1997-05-27 | 1997-05-27 | Anordning och förfarande för reducering av periodiskt brus i en sigma-delta modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
CO4790202A1 true CO4790202A1 (es) | 1999-05-31 |
Family
ID=20407109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CO98029413A CO4790202A1 (es) | 1997-05-27 | 1998-05-26 | Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta |
Country Status (12)
Country | Link |
---|---|
US (1) | US6175321B1 (es) |
EP (1) | EP1080534B1 (es) |
JP (1) | JP4027434B2 (es) |
KR (1) | KR20010013111A (es) |
CN (1) | CN1260913A (es) |
AR (1) | AR012873A1 (es) |
AU (1) | AU751275B2 (es) |
BR (1) | BR9809163A (es) |
CO (1) | CO4790202A1 (es) |
EE (1) | EE03500B1 (es) |
SE (1) | SE509408C2 (es) |
WO (1) | WO1998054840A2 (es) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001037016A1 (en) | 1999-11-19 | 2001-05-25 | New Focus, Inc. | Method and apparatus for an electro optic converter |
US6456223B1 (en) * | 1999-12-28 | 2002-09-24 | Texas Instruments Incorporated | Pipelined analog to digital converter using digital mismatch noise cancellation |
US6897772B1 (en) * | 2000-11-14 | 2005-05-24 | Honeywell International, Inc. | Multi-function control system |
JP4649777B2 (ja) * | 2001-02-09 | 2011-03-16 | ソニー株式会社 | デルタシグマ変調装置及び方法、並びにデジタル信号処理装置及び方法 |
US6823033B2 (en) * | 2002-03-12 | 2004-11-23 | Qualcomm Inc. | ΣΔdelta modulator controlled phase locked loop with a noise shaped dither |
TWI235000B (en) * | 2002-09-24 | 2005-06-21 | Mstar Semiconductor Inc | Apparatus and method for masking interference noise contained in signal source |
US20040141559A1 (en) * | 2002-10-24 | 2004-07-22 | Tewfik Ahmed H. | Generating UWB-OFDM signal using sigma-delta modulator |
EP1641124B1 (en) * | 2002-12-24 | 2009-06-03 | Fujitsu Microelectronics Limited | Spread spectrum clock generation circuit |
US7561635B2 (en) * | 2003-08-05 | 2009-07-14 | Stmicroelectronics Nv | Variable coder apparatus for resonant power conversion and method |
EP1612946B1 (en) * | 2004-07-01 | 2007-03-21 | Ericsson Technology Licensing AB | Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator |
WO2006002844A1 (en) * | 2004-07-01 | 2006-01-12 | Ericsson Technology Licensing Ab | Apparatus comprising a sigma-delta modulator and method of generating a quantized signal in a sigma-delta modulator |
US6980145B1 (en) * | 2004-07-30 | 2005-12-27 | Broadcom Corporation | System and method for noise cancellation in a signal processing circuit |
US7362250B2 (en) * | 2005-01-31 | 2008-04-22 | Texas Instruments Incorporated | Dynamic dither for sigma-delta converters |
GB0514677D0 (en) | 2005-07-18 | 2005-08-24 | Queen Mary & Westfield College | Sigma delta modulators |
WO2007038280A1 (en) | 2005-09-23 | 2007-04-05 | University Of Rochester | Blue-noise-modulated sigma-delta analog-to-digital converter |
US7215267B1 (en) * | 2005-12-19 | 2007-05-08 | Cirrus Logic, Inc. | Analog-to-digital converter with dither control |
US7821436B2 (en) * | 2006-06-08 | 2010-10-26 | Cosmic Circuits Private Limited | System and method for reducing power dissipation in an analog to digital converter |
JP2009088924A (ja) | 2007-09-28 | 2009-04-23 | Fujitsu Ltd | 信号変調方法、信号変調装置、電子装置および信号変調プログラム |
JP4856659B2 (ja) * | 2008-01-30 | 2012-01-18 | ルネサスエレクトロニクス株式会社 | 半導体集積回路装置 |
KR101182407B1 (ko) | 2008-12-22 | 2012-09-13 | 한국전자통신연구원 | 펄스 생성기 및 연속시간 시그마-델타 변조기 |
US8866655B2 (en) * | 2012-08-10 | 2014-10-21 | Infineon Technologies Ag | Modulator with variable quantizer |
EP2911303B1 (en) * | 2014-02-25 | 2020-07-22 | ams AG | Delta-sigma modulator and method for signal conversion |
US11121718B1 (en) * | 2020-08-12 | 2021-09-14 | Analog Devices International Unlimited Company | Multi-stage sigma-delta analog-to-digital converter with dither |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3999129A (en) * | 1975-04-16 | 1976-12-21 | Rolm Corporation | Method and apparatus for error reduction in digital information transmission systems |
JPS62140518A (ja) * | 1985-12-13 | 1987-06-24 | Advantest Corp | Ad変換装置 |
DE3854414T2 (de) | 1987-09-25 | 1996-04-18 | Nippon Electric Co | AD-Wandler mit ausgezeichnetem Störabstand für kleine Signale. |
JP2647136B2 (ja) * | 1988-05-13 | 1997-08-27 | 株式会社東芝 | アナログ−デジタル変換回路 |
JP3012887B2 (ja) * | 1989-03-13 | 2000-02-28 | 日本テキサス・インスツルメンツ株式会社 | 信号変換装置 |
US5055843A (en) * | 1990-01-31 | 1991-10-08 | Analog Devices, Inc. | Sigma delta modulator with distributed prefiltering and feedback |
US5144308A (en) | 1991-05-21 | 1992-09-01 | At&T Bell Laboratories | Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither |
-
1997
- 1997-05-27 SE SE9701986A patent/SE509408C2/sv not_active IP Right Cessation
-
1998
- 1998-05-26 BR BR9809163-8A patent/BR9809163A/pt not_active IP Right Cessation
- 1998-05-26 EP EP98926008A patent/EP1080534B1/en not_active Expired - Lifetime
- 1998-05-26 US US09/084,650 patent/US6175321B1/en not_active Expired - Lifetime
- 1998-05-26 JP JP50058799A patent/JP4027434B2/ja not_active Expired - Lifetime
- 1998-05-26 CO CO98029413A patent/CO4790202A1/es unknown
- 1998-05-26 WO PCT/SE1998/000990 patent/WO1998054840A2/en active IP Right Grant
- 1998-05-26 KR KR19997011091A patent/KR20010013111A/ko not_active Application Discontinuation
- 1998-05-26 EE EEP199900536A patent/EE03500B1/xx not_active IP Right Cessation
- 1998-05-26 CN CN98805577A patent/CN1260913A/zh active Pending
- 1998-05-26 AU AU77938/98A patent/AU751275B2/en not_active Ceased
- 1998-05-27 AR ARP980102466A patent/AR012873A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
EE03500B1 (et) | 2001-08-15 |
WO1998054840A2 (en) | 1998-12-03 |
EE9900536A (et) | 2000-06-15 |
AU751275B2 (en) | 2002-08-08 |
EP1080534A2 (en) | 2001-03-07 |
KR20010013111A (ko) | 2001-02-26 |
AU7793898A (en) | 1998-12-30 |
WO1998054840A3 (en) | 1999-03-11 |
CN1260913A (zh) | 2000-07-19 |
JP4027434B2 (ja) | 2007-12-26 |
US6175321B1 (en) | 2001-01-16 |
SE9701986D0 (sv) | 1997-05-27 |
AR012873A1 (es) | 2000-11-22 |
EP1080534B1 (en) | 2006-02-22 |
JP2002502565A (ja) | 2002-01-22 |
BR9809163A (pt) | 2000-08-01 |
SE509408C2 (sv) | 1999-01-25 |
SE9701986L (sv) | 1998-11-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CO4790202A1 (es) | Aparato y metodo para la reduccion de ruido periodico en un modulador sigma-delta | |
MX9301552A (es) | Metodo y aparato para estimar los parametros de medicion de señal de un receptor. | |
ATE288617T1 (de) | Wiederherstellung von hochfrequenzkomponenten | |
DE69706992T2 (de) | Nachrichtenübertragungssystem und -verfahren, insbesondere für die aktualisierung der daten in elektronischen preisschildern | |
MX172513B (es) | Sistema de transmision digital que utiliza la codificacion de sub-bandas de una señal digital | |
ES2164414T3 (es) | Metodo y aparato para codificacion de audio. | |
MX9301511A (es) | Metodo y aparato para estimar los parametros de peso de la señal en un receptor de diversidades | |
DE60310716T8 (de) | System für die audiokodierung mit füllung von spektralen lücken | |
DE69533500D1 (de) | Verfahren und vorrichtung zum kodieren und dekodieren von nachrichten | |
BR9813708A (pt) | Processo e aparelho para determinar um ponto de operação de um amplicifador não linear de um canal de comunicação. | |
BR0006091A (pt) | Método e aparelho para modular dados digitais | |
KR950035098A (ko) | 디서 아날로그 디지탈 변환기를 테스트하는 장치 및 방법 | |
KR970049453A (ko) | N-모스를 이용한 스테이틱 및 다이나믹 전 가산기 | |
SE0000699D0 (sv) | Krets och förfarande för dämpning av brus i en dataomvandlare | |
ATE321272T1 (de) | Datenkompensierende leistungsmessung | |
ES2156273T3 (es) | Cuantificacion de los parametros espectrales para un codificado eficaz de la palabra, utilizando una matriz de prediccion escindida. | |
DK1190371T3 (da) | Billedbinariseringsfremgangsmåde | |
DE59303510D1 (de) | Verfahren zum übertragen und/oder speichern digitalisierter, datenreduzierter audiosignale | |
DE60002827D1 (de) | Automatische testeinrichtung mit sigma-delta modulation zur erzeugung von referenzpegeln | |
ES2162846T3 (es) | Sistema de transmision numerica con ensanchamiento de espectro obtenido por codificacion seudoaleatoria a baja frecuencia de la informacion util y procedimiento de ensanchamiento de espectro utilizado en tal sistema. | |
KR970068186A (ko) | 다중-비트 신호에 더해진 부데이터를 갖는 다중-비트 신호를 1비트 신호로 변환하기 위한 신호처리장치 | |
NL186837C (nl) | Omzetter voor het omzetten van een delta-sigmagemoduleerd signaal in een pulscodegemoduleerd signaal. | |
ATE44330T1 (de) | Verfahren zur aufzeichnung eines pcm-tonsignals mit kompensation von signalstoerungen. | |
AU2007683A (en) | Differential pcm transmission | |
ES2067336T3 (es) | Proceso para determinar el umbral de control global durante una codificacion de lenguaje original con reduccion de la tasa de bits |