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41. 发明授权

US2605361A Differential quantization of communication signals 失效
标题翻译：通信信号的差分量化
公开(公告)号：US2605361A
公开(公告)日：1952-07-29
申请号：US17121850
申请日：1950-06-29
申请人： BELL TELEPHONE LABOR INC
发明人： CUTLER CASSIUS C
IPC分类号： G06T9/00 , H03M3/04
CPC分类号： H04N19/593 , H03M3/04

42. 发明申请

US20180167081A1 DIGITAL TO ANALOGUE CONVERSION 审中-公开
公开(公告)号：US20180167081A1
公开(公告)日：2018-06-14
申请号：US15577637
申请日：2016-05-26
申请人： MQA LIMITED
发明人： John Robert Stuart
IPC分类号： H03M1/66 , H03M1/06 , H03M3/04
CPC分类号： H03M1/661 , H03M1/0639 , H03M1/068 , H03M3/04 , H03M2201/6178
摘要： Devices and methods for digital to analogue conversion (DAC) are provided, in which the analogue outputs of an even number of digital to analogue converters are combined. The individual converters operate on the same data but there is a relative time delay between the input digital signal received by one or more of the converters and the input digital signal received by other of the converters, wherein the delay is a fraction of the data sample period. Moreover, the data signal fed to half of the converters has an inverse relationship with the data signal fed to the other half of the converters and their analogue outputs are subtracted. Dither and filtering techniques may also be employed.

43. 发明授权

US09942682B2 Implementation method and device of multi-bit modulation-based digital speaker system 有权
公开(公告)号：US09942682B2
公开(公告)日：2018-04-10
申请号：US15101147
申请日：2014-12-02
申请人： SUZHOU SONAVOX ELECTRONICS CO., LTD
发明人： Dengyong Ma , Jun Yang , Jianming Zhou , Guoqiang Chai , Yefeng Cai , Yongsheng Mu
IPC分类号： H04S5/00 , G06F3/16 , H03F3/183 , H03F3/185 , H03F3/21 , H03F3/217 , H03F3/68 , H03M3/04 , H03M3/00 , H04R1/00 , H04R3/04 , H04R5/02 , H04R5/04
CPC分类号： H04S5/00 , G06F3/16 , H03F3/183 , H03F3/185 , H03F3/21 , H03F3/217 , H03F3/2175 , H03F3/68 , H03F2200/03 , H03F2200/331 , H03M3/04 , H03M3/338 , H03M3/424 , H03M3/508 , H04R1/005 , H04R3/04 , H04R5/02 , H04R5/04 , H04R2201/403
摘要： The present invention discloses an implementation method and a device of a multi-bit Δ-Σ modulation-based digital speaker system. The method comprises, 1) digital format converting; 2) oversampling interpolation filtering; 3) multi-bit Δ-Σ modulating; 4) thermometer coding; 5) multi-channel mismatch shaping; 6) coding format converting; 7) multi-channel digital power-amplifying; 8) driving a speaker array or a multiple voice coil speaker to sound. The device comprises: a digital input interface, an oversampling interpolation filter, a multi-bit Δ-Σ modulator, a thermometer coder, a multi-channel mismatch shaper, a coding format converter, a multi-channel digital power-amplifier, and a speaker array or a multiple voice coil speaker; each portion being connected in proper order. The present invention can achieve a high-power output under a low-voltage power supply, save power consumption, implement a single-chip integration of a multi-channel reproducing system, reduce the volume and weight of the system and the implementing cost, and improve the quality of the reproduced sound.

44. 发明申请

US20170131333A1 SENSOR CIRCUIT 有权
公开(公告)号：US20170131333A1
公开(公告)日：2017-05-11
申请号：US15244368
申请日：2016-08-23
申请人： NXP B.V.
发明人： Edwin Schapendonk
IPC分类号： G01R27/02 , H03M3/00
CPC分类号： G01R27/02 , G01R17/105 , G01R19/25 , H03M1/46 , H03M1/742 , H03M3/00 , H03M3/04 , H03M3/458
摘要： A sensor circuit incorporates an analogue to digital converter for providing a digital signal derived from sensing elements connected in a bridge configuration. The sensor circuit comprises first and second paths comprising respective first and second sensing elements connected between first and second supply lines; an analogue to digital converter having a differential input connected to receive a differential voltage signal (Vinp-Vinn) between the first and second sensing elements and an output for providing a digital output signal (Dout) representing a difference between the first and second sensing elements, the analogue to digital converter comprising: current sources connected between the first and second supply lines, each current source being switchably connected to either the first or second sensing elements; and control logic configured to selectively switch current from each of the current sources to either the first path or the second path in dependence on the differential voltage signal.

45. 发明授权

US09397693B1 Asynchronous analog-to-digital converter 有权
标题翻译：异步模数转换器
公开(公告)号：US09397693B1
公开(公告)日：2016-07-19
申请号：US14926320
申请日：2015-10-29
申请人： Texas Instruments Incorporated
发明人： Dinesh Jain
IPC分类号： H03M3/00 , H03M1/52 , H03M3/04
CPC分类号： H03M3/04 , H03M1/125 , H03M1/48 , H03M1/52
摘要： An asynchronous analog-to-digital converter (AADC) and a method of using the AADC are shown. The AADC includes a digital-to analog-converter (DAC), a continuous-time comparator that provides an output including a digital value of the DAC and a time value, and a first and a second continuous-time summer, each connected to receive an analog differential input on a first input, to receive a differential output of the DAC on a second input, and to provide a difference between the analog input and the output of the DAC to the continuous-time comparator and to an error estimator. The continuous-time comparator provides the output responsive to the difference between the analog input and the output of the DAC being zero.
摘要翻译：示出了异步模数转换器（AADC）和使用AADC的方法。 AADC包括数模转换器（DAC），连续时间比较器，其提供包括DAC的数字值和时间值的输出以及连续接收的第一和第二连续时间夏季在第一输入上的模拟差分输入，用于在第二输入端接收DAC的差分输出，并且将DAC的模拟输入和输出之间的差值提供给连续时间比较器和误差估计器。连续时间比较器提供响应于DAC的模拟输入和输出之间的差为零的输出。

46. 发明申请

US20150035609A1 METHOD AND APPARATUS FOR CONVERTING SINGLE-ENDED SIGNALS INTO DIFFERENTIAL SIGNALS 有权
标题翻译：将单端信号转换为差分信号的方法和装置
公开(公告)号：US20150035609A1
公开(公告)日：2015-02-05
申请号：US14342221
申请日：2011-08-30
申请人： AGIKENT TECHNOLOGIES, INC
发明人： Neil Adams
IPC分类号： H03H7/42 , H03F1/56 , H03M3/04
CPC分类号： H03H7/42 , H03F1/565 , H03F2200/09 , H03F2200/541 , H03H11/32 , H03M3/04
摘要： An electronic apparatus comprises a first stage that functions as a single-ended to differential converter for signals in a low frequency range and a second stage that is electrically connected to the first stage and functions as a single-ended to differential converter for signals in a high frequency range.
摘要翻译：一种电子设备包括：第一级，其用作用于低频范围的信号的单端到差分转换器，以及电连接到第一级的第二级，并且用作单端至差分转换器，用于在高频范围

47. 发明授权

US08872682B2 Analog-to-digital conversion loop for PS15 and WSS systems 有权
标题翻译：用于PS15和WSS系统的模数转换回路
公开(公告)号：US08872682B2
公开(公告)日：2014-10-28
申请号：US13926455
申请日：2013-06-25
申请人： STMicroelectronics S.r.l
发明人： Vanni Poletto , Carlo Antonini , Salvatore Cannavacciuolo
IPC分类号： H03M1/00 , H03M1/12 , H03M3/04 , H03M1/48
CPC分类号： H03M1/12 , H03M1/1235 , H03M1/48 , H03M3/04
摘要： An analog-to-digital conversion loop adapted to generate a digital output signal corresponding to a low-pass filtered replica of an analog input signal, including an analog adder configured to receive the input analog signal and an analog feedback signal, adapted to generate an analog error signal corresponding to the difference between the analog input signal and the analog feedback signal; an analog-to-digital converter having a nonlinear input-output conversion characteristic defining a larger quantization step the more the input to be converted differs from a null value, configured to receive the analog error signal and to generate a corresponding digital error signal a digital integrator configured to receive the digital error signal, configured to generate the digital output signal corresponding to the time integration of the digital error signal; a digital-to-analog converter, configured to receive the digital output signal and to generate the analog feedback signal as analog replica of the digital output signal.
摘要翻译：一种适于产生对应于模拟输入信号的低通滤波复制品的数字输出信号的模拟 - 数字转换回路，包括配置成接收输入模拟信号的模拟加法器和模拟反馈信号，该模拟加法器适于产生模拟误差信号对应于模拟输入信号和模拟反馈信号之间的差异; 具有定义较大量化步长的非线性输入 - 输出转换特性的模数转换器，被转换的输入越多与空值不同，被配置为接收模拟误差信号并产生相应的数字误差信号，数字积分器，被配置为接收数字误差信号，被配置为产生对应于数字误差信号的时间积分的数字输出信号; 数模转换器，配置成接收数字输出信号并产生模拟反馈信号作为数字输出信号的模拟副本。

48. 发明申请

US20130342376A1 ANALOG-TO-DIGITAL CONVERSION LOOP FOR PSI5 AND WSS SYSTEMS 有权
标题翻译： PSI5和WSS系统的模拟到数字转换循环
公开(公告)号：US20130342376A1
公开(公告)日：2013-12-26
申请号：US13926455
申请日：2013-06-25
申请人： STMicroelectronics S.r.l.
发明人： Vanni Poletto , Carlo Antonini , Salvatore Cannavacciuolo
IPC分类号： H03M1/12
CPC分类号： H03M1/12 , H03M1/1235 , H03M1/48 , H03M3/04
摘要： An analog-to-digital conversion loop adapted to generate a digital output signal corresponding to a low-pass filtered replica of an analog input signal, including an analog adder configured to receive the input analog signal and an analog feedback signal, adapted to generate an analog error signal corresponding to the difference between the analog input signal and the analog feedback signal; an analog-to-digital converter having a nonlinear input-output conversion characteristic defining a larger quantization step the more the input to be converted differs from a null value, configured to receive the analog error signal and to generate a corresponding digital error signal a digital integrator configured to receive the digital error signal, configured to generate the digital output signal corresponding to the time integration of the digital error signal; a digital-to-analog converter, configured to receive the digital output signal and to generate the analog feedback signal as analog replica of the digital output signal.
摘要翻译：一种适于产生对应于模拟输入信号的低通滤波复制品的数字输出信号的模拟 - 数字转换回路，包括配置成接收输入模拟信号的模拟加法器和模拟反馈信号，该模拟加法器适于产生模拟误差信号对应于模拟输入信号和模拟反馈信号之间的差异; 具有定义较大量化步长的非线性输入 - 输出转换特性的模数转换器，被转换的输入越多与空值不同，被配置为接收模拟误差信号并产生相应的数字误差信号，数字积分器，被配置为接收数字误差信号，被配置为产生对应于数字误差信号的时间积分的数字输出信号; 数模转换器，配置成接收数字输出信号并产生模拟反馈信号作为数字输出信号的模拟副本。

49. 发明申请

US20120194372A1 ANALOG-TO-DIGITAL CONVERTER FOR BIOMEDICAL SIGNALS 有权
标题翻译：用于生物医学信号的模拟数字转换器
公开(公告)号：US20120194372A1
公开(公告)日：2012-08-02
申请号：US13358625
申请日：2012-01-26
申请人： Subramaniam Venkatraman , Harinath Garudadri
发明人： Subramaniam Venkatraman , Harinath Garudadri
IPC分类号： H03M1/66 , H03M1/12
CPC分类号： H03M3/04 , H03M1/468
摘要： Certain aspects of the present disclosure relate to a technique for producing a difference value by offsetting a current value of an analog signal with a stored previous value of the analog signal, and generating a digital representation of the difference value. Digital representations obtained by this technique may be sent over a channel to a receiver device for reconstruction of the original analog signal. An integrator of the receiver device may be configured to process (sum) the received samples to generate a reconstructed version of the original signal.
摘要翻译：本公开的某些方面涉及通过用模拟信号的存储的先前值偏移模拟信号的当前值来产生差分值并产生差值的数字表示的技术。通过该技术获得的数字表示可以通过信道发送到用于重建原始模拟信号的接收机设备。接收机设备的积分器可以被配置为处理（求和）接收到的采样以产生原始信号的重建版本。

50. 发明申请

US20110068967A1 A/D CONVERTER AND SOLID-STATE IMAGING DEVICE 失效
标题翻译： A / D转换器和固态成像装置
公开(公告)号：US20110068967A1
公开(公告)日：2011-03-24
申请号：US12872417
申请日：2010-08-31
申请人： Hiroshi MASHIYAMA , Satoshi Akabane
发明人： Hiroshi MASHIYAMA , Satoshi Akabane
IPC分类号： H03M1/34
CPC分类号： H03M3/04 , H03M1/56 , H04N5/378
摘要： According to one embodiment, an A/D converter includes a determination circuit configured to determine whether a first analog signal is greater than a second analog signal or not, the first analog signal being a present A/D conversion target, the second analog signal being an immediately preceding A/D conversion target, a calculation circuit configured to add a reference voltage to a difference obtained by subtracting the second analog signal from the first analog signal, a generation circuit configured to generate a comparison voltage, a comparator configured to compare a calculated value of the calculation circuit with the comparison voltage, and a conversion circuit configured to convert a period into a digital signal, the period being required until the calculated value is identical with the comparison voltage by the comparator.
摘要翻译：根据一个实施例，A / D转换器包括确定电路，其被配置为确定第一模拟信号是否大于第二模拟信号，第一模拟信号是当前A / D转换目标，第二模拟信号是紧接在前的A / D转换目标，计算电路，被配置为将参考电压加到通过从第一模拟信号中减去第二模拟信号而获得的差值，生成电路，被配置为产生比较电压;比较器，具有比较电压的计算电路的计算值;以及转换电路，被配置为将周期转换为数字信号，所需的周期直到计算值与比较电压的比较电压相同。

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