|
US4704600A
(en)
*
|
1985-02-04 |
1987-11-03 |
Nippon Telegraph And Telephone Corporation |
Oversampling converter
|
|
JP2543095B2
(ja)
*
|
1987-09-14 |
1996-10-16 |
松下電器産業株式会社 |
オ―バ―サンプリング型d/a変換器
|
|
US4851841A
(en)
*
|
1987-10-02 |
1989-07-25 |
Crystal Semiconductor Corporation |
Gain scaling of oversampled analog-to-digital converters
|
|
DE69127491T2
(de)
*
|
1990-04-05 |
1998-01-08 |
Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka |
Digitaler Requantifizierer unter Verwendung von mehrstufigen Rauschformern
|
|
US5065157A
(en)
*
|
1990-04-06 |
1991-11-12 |
General Electric Company |
High order sigma delta oversampled analog-to-digital converter integrated circuit network with minimal power dissipation and chip area requirements
|
|
US5103229A
(en)
*
|
1990-04-23 |
1992-04-07 |
General Electric Company |
Plural-order sigma-delta analog-to-digital converters using both single-bit and multiple-bit quantization
|
|
US5550544C1
(en)
*
|
1994-02-23 |
2002-02-12 |
Matsushita Electric Industrial Co Ltd |
Signal converter noise shaper ad converter and da converter
|
|
US5654711A
(en)
*
|
1995-06-07 |
1997-08-05 |
Asahi Kasei Microsystems Ltd. |
Analog-to-digital converter with local feedback
|
|
JPH10173526A
(ja)
|
1996-12-09 |
1998-06-26 |
Nec Corp |
逐次比較型a/d変換回路
|
|
US6140952A
(en)
*
|
1997-12-26 |
2000-10-31 |
Rosemount Inc. |
Delta sigma circuit with pulse width modulated offset
|
|
US6313774B1
(en)
*
|
2000-05-19 |
2001-11-06 |
Motorola Inc. |
Delta-sigma analog-to-digital converter, and method
|
|
JP2003110376A
(ja)
*
|
2001-09-28 |
2003-04-11 |
Sony Corp |
信号増幅装置
|
|
US6577258B2
(en)
*
|
2001-10-01 |
2003-06-10 |
Nokia Corporation |
Adaptive sigma-delta data converter for mobile terminals
|
|
WO2003096542A1
(en)
*
|
2002-05-09 |
2003-11-20 |
Neuro Solution Corp. |
Digital-analog converter
|
|
US6795005B2
(en)
*
|
2003-02-13 |
2004-09-21 |
Texas Instruments Incorporated |
Variable, adaptive quantization in sigma-delta modulators
|
|
JP3830924B2
(ja)
*
|
2003-07-04 |
2006-10-11 |
松下電器産業株式会社 |
縦続型デルタシグマ変調器
|
|
JP4092652B2
(ja)
*
|
2003-08-29 |
2008-05-28 |
カシオ計算機株式会社 |
D/a変換装置
|
|
JP3718706B2
(ja)
*
|
2003-10-28 |
2005-11-24 |
松下電器産業株式会社 |
デルタ・シグマ変調装置
|
|
JP4122325B2
(ja)
*
|
2004-10-01 |
2008-07-23 |
松下電器産業株式会社 |
利得制御機能付きデルタシグマ変調回路
|
|
JP4852837B2
(ja)
*
|
2004-11-01 |
2012-01-11 |
日本テキサス・インスツルメンツ株式会社 |
Pwmドライバおよびこれを用いたd級増幅器
|
|
JP2006211045A
(ja)
*
|
2005-01-25 |
2006-08-10 |
Matsushita Electric Ind Co Ltd |
縦続型可変次数式δς変調器
|
|
US7142144B1
(en)
*
|
2005-05-19 |
2006-11-28 |
Ami Semiconductor, Inc. |
Low power sigma delta modulator
|
|
KR100727409B1
(ko)
*
|
2006-02-02 |
2007-06-13 |
삼성전자주식회사 |
펄스폭 변조 방법 및 이를 이용한 디지털 파워앰프
|
|
JP4589275B2
(ja)
|
2006-07-27 |
2010-12-01 |
パナソニック株式会社 |
デルタシグマ変調型da変換装置
|
|
ATE496424T1
(de)
*
|
2007-03-16 |
2011-02-15 |
Austriamicrosystems Ag |
Anordnung und verfahren zur signalumwandlung
|
|
JP4712785B2
(ja)
*
|
2007-12-12 |
2011-06-29 |
古河電気工業株式会社 |
パルス変調器およびd/a変換器
|
|
JP4888837B2
(ja)
*
|
2008-03-27 |
2012-02-29 |
カシオ計算機株式会社 |
D/a変換装置
|
|
US7889108B2
(en)
*
|
2008-05-09 |
2011-02-15 |
Asahi Kasei Microdevices Corporation |
Hybrid delta-sigma ADC
|
|
JP4890503B2
(ja)
*
|
2008-06-17 |
2012-03-07 |
旭化成エレクトロニクス株式会社 |
デルタシグマ変調器
|
|
US7924194B2
(en)
*
|
2009-08-27 |
2011-04-12 |
Texas Instruments Incorporated |
Use of three phase clock in sigma delta modulator to mitigate the quantization noise folding
|
|
JP5198427B2
(ja)
*
|
2009-12-29 |
2013-05-15 |
ザインエレクトロニクス株式会社 |
シグマデルタ変調器
|
|
US8144043B2
(en)
*
|
2010-04-28 |
2012-03-27 |
Texas Instruments Incorporated |
Shaping inter-symbol-interference in sigma delta converter
|
|
US8130127B1
(en)
*
|
2010-06-30 |
2012-03-06 |
Cirrus Logic, Inc. |
Discrete-time delta-sigma modulator with improved anti-aliasing at lower quantization rates
|
|
JP6689025B2
(ja)
*
|
2013-01-18 |
2020-04-28 |
パナソニック株式会社 |
Pwm出力とad変換の競合回避制御装置および競合回避制御方法、ならびにパワー制御システム
|
|
US8952837B2
(en)
*
|
2013-02-28 |
2015-02-10 |
Broadcom Corporation |
Multi-rate sigma delta digital-to-analog converter
|
|
JP5958884B2
(ja)
*
|
2014-03-20 |
2016-08-02 |
カシオ計算機株式会社 |
D/a変換装置、d/a変換方法及び電子楽器
|
|
JP2016076918A
(ja)
*
|
2014-10-03 |
2016-05-12 |
株式会社リコー |
スペクトル拡散クロック発生装置及び電子機器
|
|
US9780801B2
(en)
*
|
2015-09-16 |
2017-10-03 |
Semiconductor Components Industries, Llc |
Low-power conversion between analog and digital signals using adjustable feedback filter
|
|
US10499150B2
(en)
*
|
2016-07-05 |
2019-12-03 |
Knowles Electronics, Llc |
Microphone assembly with digital feedback loop
|
|
US9985645B2
(en)
*
|
2016-08-15 |
2018-05-29 |
Mediatek Inc. |
Techniques for improving mismatch shaping of dynamic element matching circuit within delta-sigma modulator
|
|
US10135459B2
(en)
*
|
2016-10-25 |
2018-11-20 |
Analog Devices, Inc. |
ADC with capacitive difference circuit and digital sigma-delta feedback
|