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21. 发明申请

US20130099950A9 TRANSMISSION CIRCUIT, ULTRASONIC PROBE AND ULTRASONIC IMAGE DISPLAY APPARATUS 有权
标题翻译：传输电路，超声波探头和超声波图像显示装置
公开(公告)号：US20130099950A9
公开(公告)日：2013-04-25
申请号：US13035675
申请日：2011-02-25
申请人： Shinichi Amemiya , Bruno Haider , Naresh Kesavan Rao , Krishnakumar Sundaresan , Thomas Halvorsrod
发明人： Shinichi Amemiya , Bruno Haider , Naresh Kesavan Rao , Krishnakumar Sundaresan , Thomas Halvorsrod
IPC分类号： H03M1/66
CPC分类号： H03M1/66 , H03M1/0682 , H03M1/745
摘要： A transmission circuit for use with an ultrasonic probe including an ultrasonic transducer is provided. The transmission circuit includes a high voltage current DAC configured to output a drive current of an ultrasonic transducer to transmit and receive ultrasound, and a waveform generator configured to output a control signal from the high voltage current DAC to the high voltage current DAC with a predetermined timing. The control signal configured to output the drive current with a desired magnitude.
摘要翻译：提供了一种与包括超声换能器的超声波探头一起使用的传输电路。传输电路包括高压电流DAC，其被配置为输出超声波换能器的驱动电流以发射和接收超声;以及波形发生器，被配置为以预定的方式从高电压电流DAC输出到高压电流DAC的控制信号定时。控制信号被配置为以期望的幅度输出驱动电流。

22. 发明授权

US08384038B2 Readout electronics for photon counting and energy discriminating detectors 有权
标题翻译：用于光子计数和能量鉴别检测器的读出电子装置
公开(公告)号：US08384038B2
公开(公告)日：2013-02-26
申请号：US12490903
申请日：2009-06-24
申请人： Jianjun Guo , Naresh Kesavan Rao , John Eric Tkaczyk , Yanfeng Du , Naveen Chandra
发明人： Jianjun Guo , Naresh Kesavan Rao , John Eric Tkaczyk , Yanfeng Du , Naveen Chandra
IPC分类号： G01T1/24
CPC分类号： G01T1/247
摘要： A data acquisition system includes a charge-sensitive amplifier (CSA) configured to receive a charge from an x-ray detector, the CSA includes a high-gain electronic voltage amplifier, an electrical energy storage device coupled with the amplifier, and an electrical resistor coupled with the amplifier. The data acquisition system includes a baseline sampling circuit configured to receive an output from the CSA and to sample a baseline signal from the CSA, at least one discriminator coupled to an output of the CSA and to an output of the baseline sampling circuit, the at least one discriminator configured to output a voltage if the output of the CSA exceeds a threshold, and a counter coupled to an output of the discriminator and configured to output a digital signal indicative of a photon count received at the x-ray detector and based on the output from the CSA and on the signal from the CSA.
摘要翻译：数据采集系统包括被配置为从X射线检测器接收电荷的电荷敏感放大器（CSA），CSA包括高增益电子电压放大器，与放大器耦合的电能存储装置和电阻器加上放大器。数据采集系统包括基准采样电路，其被配置为从CSA接收输出并从CSA采样基线信号，耦合到CSA的输出和基线采样电路的输出的至少一个鉴别器，如果所述CSA的输出超过阈值，则配置成输出电压的至少一个鉴别器，以及耦合到所述鉴别器的输出并被配置为输出指示在所述x射线检测器处接收的光子计数的数字信号的计数器，并且基于 CSA的输出和CSA的信号。

23. 发明授权

US08294607B2 Multichannel digitizer and method of digitizing 有权
标题翻译：多通道数字化仪和数字化方法
公开(公告)号：US08294607B2
公开(公告)日：2012-10-23
申请号：US12915976
申请日：2010-10-29
申请人： Naresh Kesavan Rao , Nanette Gruber
发明人： Naresh Kesavan Rao , Nanette Gruber
IPC分类号： H03M1/56
CPC分类号： H03M1/123 , H03M1/403
摘要： A multichannel digitizer and method of digitizing are provided. One digitizer includes an analog to digital convertor (ADC) having a plurality of channels receiving input analog signals; an operational amplifier in each channel and a comparator connected to the operational amplifier. The ADC further includes a logic circuit in each channel connected to the comparator and configured to generate an output based on a comparator signal received from the comparator. The ADC also includes a ramp generator connected to the plurality of channels and configured to provide a time varying reference signal.
摘要翻译：提供了多通道数字化仪和数字化方法。一个数字转换器包括具有接收输入模拟信号的多个通道的模数转换器（ADC）; 每个通道中的运算放大器和连接到运算放大器的比较器。 ADC还包括连接到比较器的每个通道中的逻辑电路，并且被配置为基于从比较器接收的比较器信号来产生输出。 ADC还包括连接到多个通道并被配置为提供时变参考信号的斜坡发生器。

24. 发明授权

US08009072B2 Predictive analog-to-digital converter and methods thereof 失效
标题翻译：预测模数转换器及其方法
公开(公告)号：US08009072B2
公开(公告)日：2011-08-30
申请号：US12642780
申请日：2009-12-19
申请人： Kenneth Wayne Rigby , Robert Gideon Wodnicki , Krishnakumar Sundaresan , Naresh Kesavan Rao
发明人： Kenneth Wayne Rigby , Robert Gideon Wodnicki , Krishnakumar Sundaresan , Naresh Kesavan Rao
IPC分类号： H03M3/00 , H03M1/12 , H03M1/10
CPC分类号： H03M1/188 , H03M1/183 , H03M1/208 , H03M1/361 , H03M1/68
摘要： Predictive Analog-to-Digital Converter system in one embodiment includes a sampling section producing a sampled analog input signal with a first summer section combining the sampled analog input signal and an analog prediction signal to produce an analog prediction error signal. There is at least one error analog-to-digital convertor digitizing the analog prediction error signal, wherein a digital error signal output from the error analog-to-digital convertor is one of a full bitwidth error signal during an over-range condition else a lower bitwidth error signal. A second summer is coupled to the digital error signal output and a digital prediction signal, and generates a full bitwidth digital output signal. A feedback section is coupled to the digital output signal and providing the digital prediction signal and the analog prediction signal.
摘要翻译：在一个实施例中，预测模数转换器系统包括产生采样模拟输入信号的采样部分，其中组合采样的模拟输入信号和模拟预测信号的第一加法部分产生模拟预测误差信号。至少有一个误差模拟数字转换器将模拟预测误差信号数字化，其中从误差模数转换器输出的数字误差信号是在超范围条件期间的完全位宽误差信号之一，否则较低的位宽错误信号。第二个夏天耦合到数字误差信号输出和数字预测信号，并产生完整的位宽数字输出信号。反馈部分耦合到数字输出信号并提供数字预测信号和模拟预测信号。

25. 发明授权

US07969244B2 System and method for reducing flicker noise from CMOS amplifiers 有权
标题翻译：降低CMOS放大器闪烁噪声的系统和方法
公开(公告)号：US07969244B2
公开(公告)日：2011-06-28
申请号：US12173345
申请日：2008-07-15
申请人： Naresh Kesavan Rao , Richard Gordon Cronce , Jianjun Guo
发明人： Naresh Kesavan Rao , Richard Gordon Cronce , Jianjun Guo
IPC分类号： H03F3/04
CPC分类号： H03F1/301
摘要： A technique is provided for acquiring data with reduced correlated low frequency noise interference via a data acquisition circuit. The data acquisition circuit includes a plurality of data channels comprising a plurality of amplifiers and a biasing circuit for providing bias voltages to the plurality of amplifiers. The biasing circuit is configured to generate the bias voltages and establish a relationship between the bias voltages so as to reduce correlated low frequency noise in the plurality of amplifiers.
摘要翻译：提供了一种通过数据采集电路获取具有降低的相关低频噪声干扰的数据的技术。数据采集电路包括多个数字通道，包括多个放大器和用于向多个放大器提供偏置电压的偏置电路。偏置电路被配置为产生偏置电压并建立偏置电压之间的关系，以便减少多个放大器中的相关低频噪声。

26. 发明授权

US07570185B2 Data acquisition system for medical imaging 失效
标题翻译：医学影像数据采集系统
公开(公告)号：US07570185B2
公开(公告)日：2009-08-04
申请号：US11023669
申请日：2004-12-28
申请人： Naresh Kesavan Rao , Jianjun Guo
发明人： Naresh Kesavan Rao , Jianjun Guo
IPC分类号： H03M1/00
CPC分类号： H03M1/1028 , H03M1/12
摘要： A system and a method for converting an analog signal to a digital signal are provided. The technique involves receiving a sampled analog signal, and selecting one of a plurality of segments of a segmented relation between DAC output values and desired ADC input values. Desired gain and offset values are applied to the DAC output values or to the sampled analog signal based upon the selected segment. The sampled analog signal is converted to a digital signal based upon the desired gain and offset values.
摘要翻译：提供了一种用于将模拟信号转换为数字信号的系统和方法。该技术涉及接收采样的模拟信号，并且选择DAC输出值和期望的ADC输入值之间的分段关系的多个段之一。所需的增益和偏移值根据所选择的段应用于DAC输出值或采样模拟信号。采样的模拟信号根据期望的增益和偏移值被转换成数字信号。

27. 发明授权

US07489191B2 Circuit and method for reducing bias noise in amplifier circuits 有权
标题翻译：放大器电路中减少偏置噪声的电路和方法
公开(公告)号：US07489191B2
公开(公告)日：2009-02-10
申请号：US11759972
申请日：2007-06-08
申请人： Naresh Kesavan Rao , Jianjun Guo
发明人： Naresh Kesavan Rao , Jianjun Guo
IPC分类号： H03F1/14
CPC分类号： H03F3/19 , H03F1/30
摘要： An amplifier circuit and method for reducing bias noise is disclosed. The amplifier circuit includes a passive biasing source for supplying a desired bias signal to the amplifier and an active biasing source for energizing the passive biasing source to supply the desired bias signal. The amplifier circuit also includes a decoupler for selectively decoupling the active biasing source from the passive biasing source when the amplifier is configured for amplifying an input signal so that the amplifier remains isolated from electronic noise produced by the active biasing source while still being supplied the desired bias signal by the passive source.
摘要翻译：公开了一种减小偏置噪声的放大器电路和方法。放大器电路包括用于向放大器提供期望的偏置信号的无源偏置源和用于激励被动偏置源以提供所需偏置信号的有源偏置源。放大器电路还包括去耦器，用于当放大器被配置为放大输入信号时，选择性地将有源偏置源与无源偏置源分离，使得放大器保持与有源偏置源产生的电子噪声隔离，同时仍然被提供给期望的被动源的偏置信号。

28. 发明申请

US20120218135A1 TRANSMISSION CIRCUIT, ULTRASONIC PROBE AND ULTRASONIC IMAGE DISPLAY APPARATUS 有权
标题翻译：传输电路，超声波探头和超声波图像显示装置
公开(公告)号：US20120218135A1
公开(公告)日：2012-08-30
申请号：US13035675
申请日：2011-02-25
申请人： Shinichi Amemiya , Bruno Haider , Naresh Kesavan Rao , Krishnakumar Sundaresan , Thomas Halvorsrod
发明人： Shinichi Amemiya , Bruno Haider , Naresh Kesavan Rao , Krishnakumar Sundaresan , Thomas Halvorsrod
IPC分类号： H03M1/66
CPC分类号： H03M1/66 , H03M1/0682 , H03M1/745
摘要： A transmission circuit for use with an ultrasonic probe including an ultrasonic transducer is provided. The transmission circuit includes a high voltage current DAC configured to output a drive current of an ultrasonic transducer to transmit and receive ultrasound, and a waveform generator configured to output a control signal from the high voltage current DAC to the high voltage current DAC with a predetermined timing. The control signal configured to output the drive current with a desired magnitude.
摘要翻译：提供了一种与包括超声换能器的超声波探头一起使用的传输电路。传输电路包括高压电流DAC，其被配置为输出超声波换能器的驱动电流以发射和接收超声;以及波形发生器，被配置为以预定的方式从高电压电流DAC输出到高压电流DAC的控制信号定时。控制信号被配置为以期望的幅度输出驱动电流。

29. 发明申请

US20110148682A1 PREDICTIVE ANALOG-TO-DIGITAL CONVERTER AND METHODS THEREOF 失效
标题翻译：预测模数转数转换器及其方法
公开(公告)号：US20110148682A1
公开(公告)日：2011-06-23
申请号：US12642780
申请日：2009-12-19
申请人： Kenneth Wayne Rigby , Robert Gideon Wodnicki , Krishnakumar Sundaresan , Naresh Kesavan Rao
发明人： Kenneth Wayne Rigby , Robert Gideon Wodnicki , Krishnakumar Sundaresan , Naresh Kesavan Rao
IPC分类号： H03M1/12
CPC分类号： H03M1/188 , H03M1/183 , H03M1/208 , H03M1/361 , H03M1/68
摘要： Predictive Analog-to-Digital Converter system in one embodiment includes a sampling section producing a sampled analog input signal with a first summer section combining the sampled analog input signal and an analog prediction signal to produce an analog prediction error signal. There is at least one error analog-to-digital convertor digitizing the analog prediction error signal, wherein a digital error signal output from the error analog-to-digital convertor is one of a full bitwidth error signal during an over-range condition else a lower bitwidth error signal. A second summer is coupled to the digital error signal output and a digital prediction signal, and generates a full bitwidth digital output signal. A feedback section is coupled to the digital output signal and providing the digital prediction signal and the analog prediction signal.
摘要翻译：在一个实施例中，预测模数转换器系统包括产生采样模拟输入信号的采样部分，其中组合采样的模拟输入信号和模拟预测信号的第一加法部分产生模拟预测误差信号。至少有一个误差模拟数字转换器将模拟预测误差信号数字化，其中从误差模数转换器输出的数字误差信号是在超范围条件期间的完全位宽误差信号之一，否则较低的位宽错误信号。第二个夏天耦合到数字误差信号输出和数字预测信号，并产生完整的位宽数字输出信号。反馈部分耦合到数字输出信号并提供数字预测信号和模拟预测信号。

30. 发明授权

US07870006B2 Methods and systems for managing clinical research information 有权
标题翻译：临床研究信息管理方法和系统
公开(公告)号：US07870006B2
公开(公告)日：2011-01-11
申请号：US10065159
申请日：2002-09-23
申请人： John Eric Tkaczyk , Maria Iatrou , Naresh Kesavan Rao
发明人： John Eric Tkaczyk , Maria Iatrou , Naresh Kesavan Rao
IPC分类号： G06Q50/00 , G06F19/00
CPC分类号： G06Q50/24 , G06F19/00 , G06F19/3418 , G06Q50/22 , G16H10/20 , G16H10/60
摘要： A method for managing clinical study (CS) information for a clinical research entity using a server system coupled to a centralized database and at least one client system is provided. The centralized database has a plurality of templates stored therein. The method includes receiving at the server system CS information relating to at least one patient involved in a clinical study wherein the CS information is entered through a user selected template displayed on the client system, storing CS information received at the server system in the centralized database, tracking CS information stored in the centralized database, updating the centralized database periodically with newly received CS information to maintain CS information, and providing CS information in response to an inquiry.
摘要翻译：提供了一种使用耦合到集中式数据库和至少一个客户端系统的服务器系统来管理临床研究实体的临床研究（CS）信息的方法。集中式数据库中存储有多个模板。该方法包括在服务器系统CS处接收与临床研究中涉及的至少一个患者有关的信息，其中通过在客户端系统上显示的用户选择的模板输入CS信息，将在服务器系统接收的CS信息存储在中央数据库中跟踪存储在集中式数据库中的CS信息，以新接收的CS信息周期性地更新集中式数据库，以维护CS信息，并响应于查询提供CS信息。

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