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1. 发明申请

US20130170622A1 SYSTEM AND METHOD FOR REGULATING DATA ACQUISTION 有权
标题翻译：用于调节数据采集的系统和方法
公开(公告)号：US20130170622A1
公开(公告)日：2013-07-04
申请号：US13340175
申请日：2011-12-29
申请人： Naresh Kesavan Rao , Richard Gordon Cronce , German Guillermo Vera , Jianjun Guo
发明人： Naresh Kesavan Rao , Richard Gordon Cronce , German Guillermo Vera , Jianjun Guo
IPC分类号： H05G1/54
CPC分类号： A61B6/4233 , A61B6/5258 , A61B6/54
摘要： A method for regulating the acquisition of an analog input signal from a digital X-ray panel is provided. The method includes opening a switch disposed between an integrator and the digital X-ray panel prior to an integrator event or upon detection of a fault in the digital X-ray panel to decouple the integrator from the digital X-ray panel, wherein the integrator is configured to integrate the analog input signal from the digital X-ray panel. Also, a system for data acquisition is provided. Further, a method for fault protection of the digital X-ray panel is provided.
摘要翻译：提供了一种用于调节从数字X射线面板获取模拟输入信号的方法。该方法包括在积分器事件之前打开设置在积分器和数字X射线面板之间的开关，或者在检测到数字X射线面板中的故障以使积分器与数字X射线面板分离时，其中积分器被配置为集成来自数字X射线面板的模拟输入信号。此外，还提供了一种用于数据采集的系统。此外，提供了一种用于数字X射线面板的故障保护的方法。

2. 发明授权

US08044681B2 Apparatus and method for channel-specific configuration in a readout ASIC 有权
标题翻译：读出ASIC中通道特定配置的装置和方法
公开(公告)号：US08044681B2
公开(公告)日：2011-10-25
申请号：US12199039
申请日：2008-08-27
申请人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
发明人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
IPC分类号： H03K19/173
CPC分类号： G06G7/18 , A61B6/037
摘要： An application-specific integrated circuit (ASIC) comprising a plurality of channels, each channel having circuitry for time and energy discrimination, a plurality of programmable registers, each programmable register configured to output at least one configuration parameter for the circuitry, and a channel-select register configured to identify a channel of the plurality of channels to be configured. The ASIC further includes a configuration-select register configured to identify the programmable register to be used for channel configuration, and a communications interface configured to transmit instructions received from a controller to one of the channel-select register, the configuration-select register, and the plurality of programmable registers.
摘要翻译：一种专用集成电路（ASIC），包括多个通道，每个通道具有用于时间和能量鉴别的电路，多个可编程寄存器，每个可编程寄存器被配置为输出用于该电路的至少一个配置参数，选择寄存器，其被配置为识别要配置的多个信道的信道。 ASIC还包括配置选择寄存器，配置为识别要用于信道配置的可编程寄存器，以及通信接口，被配置为将从控制器接收的指令发送到频道选择寄存器，配置选择寄存器和多个可编程寄存器。

3. 发明授权

US08040270B2 Low-noise data acquisition system for medical imaging 有权
标题翻译：用于医学成像的低噪声数据采集系统
公开(公告)号：US08040270B2
公开(公告)日：2011-10-18
申请号：US12393762
申请日：2009-02-26
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： H03M1/12
CPC分类号： H03M1/183 , H03M1/129
摘要： According to embodiments of the present technique, a system and a method for obtaining low-noise measurements for a wide range of analog signal strengths is provided. According to aspects of the present technique, a low-gain measurement of an input pixel charge is performed, wherein the input pixel charge is distributed to two feedback capacitors, which together provide a relatively low integrator gain. After the low-gain measurement, a high-gain measurement is performed, wherein one of the capacitors is remove from the feedback loop and the charge is redistributed to the remaining capacitor.
摘要翻译：根据本技术的实施例，提供了一种用于获得宽范围的模拟信号强度的低噪声测量的系统和方法。根据本技术的方面，执行输入像素电荷的低增益测量，其中输入像素电荷被分配到两个反馈电容器，这两个反馈电容器一起提供相对低的积分器增益。在低增益测量之后，执行高增益测量，其中电容器中的一个从反馈回路中去除，并且电荷被再分配到剩余电容器。

4. 发明授权

US08804909B2 System and method for regulating data acquistion 有权
标题翻译：用于调节数据采集的系统和方法
公开(公告)号：US08804909B2
公开(公告)日：2014-08-12
申请号：US13340175
申请日：2011-12-29
申请人： Naresh Kesavan Rao , Richard Gordon Cronce , German Guillermo Vera , Jianjun Guo
发明人： Naresh Kesavan Rao , Richard Gordon Cronce , German Guillermo Vera , Jianjun Guo
IPC分类号： H05G1/56 , H01J31/50
CPC分类号： A61B6/4233 , A61B6/5258 , A61B6/54
摘要： A method for regulating the acquisition of an analog input signal from a digital X-ray panel is provided. The method includes opening a switch disposed between an integrator and the digital X-ray panel prior to an integrator event or upon detection of a fault in the digital X-ray panel to decouple the integrator from the digital X-ray panel, wherein the integrator is configured to integrate the analog input signal from the digital X-ray panel. Also, a system for data acquisition is provided. Further, a method for fault protection of the digital X-ray panel is provided.
摘要翻译：提供了一种用于调节从数字X射线面板获取模拟输入信号的方法。该方法包括在积分器事件之前打开设置在积分器和数字X射线面板之间的开关，或者在检测到数字X射线面板中的故障以使积分器与数字X射线面板分离时，其中积分器被配置为集成来自数字X射线面板的模拟输入信号。此外，还提供了一种用于数据采集的系统。此外，提供了一种用于数字X射线面板的故障保护的方法。

5. 发明申请

US20090132789A1 APPARATUS AND METHOD FOR CHANNEL-SPECIFIC CONFIGURATION IN A READOUT ASIC 有权
标题翻译：读取ASIC中通道特定配置的设备和方法
公开(公告)号：US20090132789A1
公开(公告)日：2009-05-21
申请号：US12199039
申请日：2008-08-27
申请人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
发明人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
IPC分类号： G06F15/76
CPC分类号： G06G7/18 , A61B6/037
摘要： An application-specific integrated circuit (ASIC) comprising a plurality of channels, each channel having circuitry for time and energy discrimination, a plurality of programmable registers, each programmable register configured to output at least one configuration parameter for the circuitry, and a channel-select register configured to identify a channel of the plurality of channels to be configured. The ASIC further includes a configuration-select register configured to identify the programmable register to be used for channel configuration, and a communications interface configured to transmit instructions received from a controller to one of the channel-select register, the configuration-select register, and the plurality of programmable registers.
摘要翻译：一种专用集成电路（ASIC），包括多个通道，每个通道具有用于时间和能量鉴别的电路，多个可编程寄存器，每个可编程寄存器被配置为输出用于该电路的至少一个配置参数，选择寄存器，其被配置为识别要配置的多个信道的信道。 ASIC还包括配置选择寄存器，配置为识别要用于信道配置的可编程寄存器，以及通信接口，被配置为将从控制器接收的指令发送到频道选择寄存器，配置选择寄存器和多个可编程寄存器。

6. 发明申请

US20090129537A1 DATA ACQUISITION SYSTEM FOR PHOTON COUNTING AND ENERGY DISCRIMINATING DETECTORS 有权
标题翻译：用于光电计数和能量鉴别检测器的数据采集系统
公开(公告)号：US20090129537A1
公开(公告)日：2009-05-21
申请号：US12198989
申请日：2008-08-27
申请人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
发明人： Naresh Kesavan Rao , Brian David Yanoff , Yanfeng Du , Jianjun Guo
IPC分类号： H05G1/60 , H03M1/12
CPC分类号： G06G7/18
摘要： A data acquisition system including a readout Application Specific Integrated Circuit (ASIC) having a plurality of channels, each channel having a time discriminating circuit and an energy discriminating circuit, wherein the ASIC is configured to receive a plurality of signals from a semiconductor radiation detector. The data acquisition system also includes a digital-to-analog converter (DAC) electrically coupled to the ASIC and configured to provide a reference signal to the ASIC used in the generation of digital outputs from the ASIC, and a controller electrically coupled to the ASIC and to the DAC, the controller configured to instruct the DAC to provide the reference signal to the ASIC.
摘要翻译：一种数据采集系统，包括具有多个通道的读出专用集成电路（ASIC），每个通道具有时间鉴别电路和能量识别电路，其中ASIC被配置为从半导体辐射检测器接收多个信号。数据采集系统还包括电耦合到ASIC的数模转换器（DAC），并被配置为向ASIC中产生数字输出使用的ASIC提供参考信号，以及电耦合到ASIC的控制器并且所述控制器被配置为指示所述DAC向所述ASIC提供所述参考信号。

7. 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。

8. 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。

9. 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。

10. 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。

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