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1. 发明授权

US09980683B2 Analog/digital conversion system, X-ray CT apparatus, and medical image imaging apparatus 有权
公开(公告)号：US09980683B2
公开(公告)日：2018-05-29
申请号：US15504259
申请日：2015-08-05
申请人： Hitachi, Ltd.
发明人： Masafumi Onouchi
IPC分类号： H03M1/06 , A61B6/03 , H03M1/12
CPC分类号： A61B6/035 , A61B6/03 , H03M1/0624 , H03M1/1245 , H03M1/1265
摘要： In order to provide a highly precise analog/digital conversion system in which an output error of an AD converter is small, sampling is performed at a certain sampling period S from the start time of a measurement period TL to the (N−1)-th sampling when the measurement period TL does not correspond to the sampling period S multiplied by the number of samplings N, the N-th sampling is performed at a timing when a time interval between the (N−1)-th sampling and the N-th sampling is equal to the sampling period S multiplied by a predetermined coefficient k, and the k value is set to a non-integer optimum value evaluated in advance in accordance with the N value in order to minimize an error of the detection value of the AD converter.

2. 发明申请

US20160322984A1 COGNITIVE SIGNAL CONVERTER 有权
标题翻译：认知信号转换器
公开(公告)号：US20160322984A1
公开(公告)日：2016-11-03
申请号：US15107568
申请日：2014-12-03
申请人： Anacatum Design AB , Fingerprint Cards AB
发明人： Rolf SUNDBLAD , Staffan HOLMBRING , Robert HÄGGLUND , Emil HJALMARSSON
IPC分类号： H03M1/12 , H03M1/10 , H03M1/46 , H03M1/38
CPC分类号： H03M1/1245 , H03M1/0624 , H03M1/1009 , H03M1/1265 , H03M1/38 , H03M1/46
摘要： A cognitive signal converter connectable to an analog signal source via an analog signal input port and adapted to produce a digital output signal based on an analog input signal received via the analog signal input port is disclosed. The cognitive signal converter comprises an analog-to-digital converter and a cognitive network. The analog-to-digital converter is adapted to produce a digital converted signal based on the analog input signal, a sample clock signal and a process clock signal by sampling the analog input signal in accordance with the sample clock signal and quantizing each analog input signal sample, wherein the quantizing process is operated by the process clock signal. The cognitive network is adapted to receive the digital converted signal of the analog-to-digital converter, control at least one of the sample clock signal and the process clock signal based on the received digital converted signal and one or more characteristics of the analog signal source, and produce the digital output signal based on the received digital converted signal. Corresponding integrated circuit, electronic device and method are also disclosed.
摘要翻译：公开了一种通过模拟信号输入端口连接到模拟信号源并适于产生基于经由模拟信号输入端口接收的模拟输入信号的数字输出信号的认知信号转换器。认知信号转换器包括模数转换器和认知网络。模拟 - 数字转换器适于基于模拟输入信号，采样时钟信号和处理时钟信号，通过根据采样时钟信号对模拟输入信号进行采样并量化每个模拟输入信号来产生数字转换信号采样，其中量化处理由处理时钟信号操作。认知网络适于接收模拟 - 数字转换器的数字转换信号，基于接收的数字转换信号和模拟信号的一个或多个特性来控制采样时钟信号和处理时钟信号中的至少一个源，并且基于接收到的数字转换信号产生数字输出信号。还公开了相应的集成电路，电子设备和方法。

3. 发明授权

US09350375B1 Method and system for performing analog-to-digital conversion 有权
标题翻译：用于执行模数转换的方法和系统
公开(公告)号：US09350375B1
公开(公告)日：2016-05-24
申请号：US14685501
申请日：2015-04-13
申请人： NXP B.V.
发明人： Yu Lin , Frank Leong , Konstantinos Doris
IPC分类号： H03M1/36 , H03M1/12 , H03M1/00
CPC分类号： H03M1/12 , H03M1/1215 , H03M1/1265
摘要： Methods and systems for performing analog-to-digital conversion are described. In one embodiment, a method for performing analog-to-digital conversion involves processing an analog impulse signal to obtain an impulse pattern of the analog impulse signal in a first signal processing path and converting the analog impulse signal into a digital signal based on the impulse pattern in a second signal processing path that is in parallel with the first signal processing path. The impulse pattern of the analog impulse signal includes duty cycle information of the analog impulse signal. Other embodiments are also described.
摘要翻译：描述用于执行模数转换的方法和系统。在一个实施例中，用于执行模数转换的方法涉及处理模拟脉冲信号以在第一信号处理路径中获得模拟脉冲信号的脉冲模式，并且基于脉冲将模拟脉冲信号转换为数字信号在与第一信号处理路径并联的第二信号处理路径中的图案。模拟脉冲信号的脉冲模式包括模拟脉冲信号的占空比信息。还描述了其它实施例。

4. 发明授权

US09094272B2 Method and apparatus for detecting the presence of a signal in a frequency band using non-uniform sampling 有权
标题翻译：用于使用非均匀采样来检测频带中的信号的存在的方法和装置
公开(公告)号：US09094272B2
公开(公告)日：2015-07-28
申请号：US14015562
申请日：2013-08-30
申请人： GOOGLE TECHNOLOGY HOLDINGS LLC
发明人： Ajay K. Luthra
IPC分类号： H04L27/26 , H03M1/12
CPC分类号： H04L27/265 , H03M1/1265
摘要： A method and apparatus for detecting the presence of a signal in a frequency band using non-uniform sampling includes an analog to digital converter (ADC) (110) for sampling an analog input signal (105) to create discrete signal samples (115), an ADC exciter (120) for exciting the ADC to sample at non-uniform time periods, a digital filter (130) for converting the discrete signal samples into an energy versus frequency spectrum (300), and an energy comparator (140) coupled to an output of the digital filter. The energy comparator (140) detects the presence of any frequency bands exceeding an energy setpoint.
摘要翻译：用于使用非均匀采样来检测频带中的信号的存在的方法和装置包括用于对模拟输入信号（105）进行采样以产生离散信号样本（115）的模数转换器（ADC）（110）用于激励ADC以非均匀时间周期采样的ADC激励器（120），用于将离散信号样本转换成能量对频谱（300）的数字滤波器（130），以及耦合到数字滤波器的输出。能量比较器（140）检测超过能量设定点的任何频带的存在。

5. 发明授权

US08737554B2 Pulse-signal recovering device with time-interleaving scheme 有权
标题翻译：具有时间交织方案的脉冲信号恢复装置
公开(公告)号：US08737554B2
公开(公告)日：2014-05-27
申请号：US13326205
申请日：2011-12-14
申请人： Seong-Do Kim , Pil Jae Park , Sung Chul Woo , Hyun Kyu Yu
发明人： Seong-Do Kim , Pil Jae Park , Sung Chul Woo , Hyun Kyu Yu
IPC分类号： H04L7/00
CPC分类号： G01S7/2921 , H03M1/1215 , H03M1/1265
摘要： Disclosed is a pulse-signal recovering device with a time-interleaving scheme. Exemplary embodiments of the present invention can improve receive performance of a radar so as to shorten pre-scanning time for roughly determining presence and absence of objects and time consumed to recover received pulse signals in the radar receiver with the sub-sampling scheme by simultaneously sensing signal levels of the received pulse signals at several positions and improve a signal to noise ratio by increasing an averaging rate with respect to the number of same received pulses.
摘要翻译：公开了一种具有时间交织方案的脉冲信号恢复装置。本发明的示例性实施例可以改善雷达的接收性能，以便缩短预扫描时间，以大致确定物体的存在和不存在以及利用子采样方案通过同时感测在雷达接收机中恢复接收到的脉冲信号所消耗的时间在几个位置处接收到的脉冲信号的信号电平，并通过相对于相同的接收脉冲的数量增加平均速率来提高信噪比。

6. 发明申请

US20120249353A1 SYSTEMS AND METHODS FOR ACQUIRING AND DECODING SIGNALS USING COMPRESSED SENSING 有权
标题翻译：使用压缩感测获取和解码信号的系统和方法
公开(公告)号：US20120249353A1
公开(公告)日：2012-10-04
申请号：US13406509
申请日：2012-02-27
申请人： Mohammad A. Khajehnejad , Babak Hassibi , Juhwan Yoo
发明人： Mohammad A. Khajehnejad , Babak Hassibi , Juhwan Yoo
IPC分类号： H03M1/12
CPC分类号： H03M1/1265 , H03M1/121 , H03M7/3062
摘要： Systems and methods in accordance with embodiments of the invention utilize a CS architecture based on a sub-linear time recovery process (with reduced memory requirements). In several embodiments, a novel structured measurement matrix is exploited during signal acquisition allowing the use of a recovery process based on relatively simple computational primitives making it more amenable to implementation in a fully-integrated form. One embodiment of the invention includes an analog front end configured to receive an analog input signal, and CS sampling circuitry connected to an output of the analog front end and configured to generate a plurality of measurements using a structured measurement matrix, where each row of the structured measurement matrix is generated using a different predetermined check node. In addition, the CS sampling circuitry is configured to generate the plurality of measurements at a rate that is less than the Nyquist rate of the analog input signal.
摘要翻译：根据本发明的实施例的系统和方法利用基于亚线性时间恢复过程（具有减少的存储器要求）的CS架构。在几个实施例中，在信号获取期间利用新颖的结构化测量矩阵，允许使用基于相对简单的计算原语的恢复过程，使得更适合以完全集成的形式实现。本发明的一个实施例包括被配置为接收模拟输入信号的模拟前端和连接到模拟前端的输出并被配置为使用结构化测量矩阵生成多个测量的CS采样电路，其中，使用不同的预定校验节点生成结构化测量矩阵。另外，CS采样电路被配置为以小于模拟输入信号的奈奎斯特速率的速率产生多个测量。

7. 发明申请

US20120148002A1 PULSE-SIGNAL RECOVERING DEVICE WITH TIME-INTERLEAVING SCHEME 有权
标题翻译：具有时间交互方案的脉冲信号恢复装置
公开(公告)号：US20120148002A1
公开(公告)日：2012-06-14
申请号：US13326205
申请日：2011-12-14
申请人： Seong-Do KIM , Pil Jae Park , Sung Chul Woo , Hyun Kyu Yu
发明人： Seong-Do KIM , Pil Jae Park , Sung Chul Woo , Hyun Kyu Yu
IPC分类号： H04L7/00
CPC分类号： G01S7/2921 , H03M1/1215 , H03M1/1265
摘要： Disclosed is a pulse-signal recovering device with a time-interleaving scheme. Exemplary embodiments of the present invention can improve receive performance of a radar so as to shorten pre-scanning time for roughly determining presence and absence of objects and time consumed to recover received pulse signals in the radar receiver with the sub-sampling scheme by simultaneously sensing signal levels of the received pulse signals at several positions and improve a signal to noise ratio by increasing an averaging rate with respect to the number of same received pulses.
摘要翻译：公开了一种具有时间交织方案的脉冲信号恢复装置。本发明的示例性实施例可以改善雷达的接收性能，以便缩短预扫描时间，以大致确定物体的存在和不存在以及利用子采样方案通过同时感测在雷达接收机中恢复接收到的脉冲信号所消耗的时间在几个位置处接收到的脉冲信号的信号电平，并通过相对于相同的接收脉冲的数量增加平均速率来提高信噪比。

8. 发明授权

US07873097B1 Systems and methods for concatenation in spread spectrum systems 有权
标题翻译：扩频系统中连接的系统和方法
公开(公告)号：US07873097B1
公开(公告)日：2011-01-18
申请号：US11858760
申请日：2007-09-20
申请人： James R. Luecke , Keith R. Jones
发明人： James R. Luecke , Keith R. Jones
IPC分类号： H04B1/00
CPC分类号： H04B1/707 , H03M1/1265 , H04B2201/70707
摘要： A receiver despreads a spread spectrum sequence by partially despreading the spread spectrum sequence using an outer spreading code, and then despreading the partially despread sequence using an inner spreading code. This can advantageously save processing power. In one embodiment, the outer spreading code is despread with an analog circuit, and an inner spreading code is despread with a digital circuit. A modulator for a transmitter can generate a spread spectrum sequence by direct-sequence spreading data to generate a partially spread sequence and then spreading the partially spread sequence to generate the spread spectrum sequence.
摘要翻译：接收机通过使用外部扩展码对扩展频谱序列进行部分解扩展扩展扩展频谱序列，然后使用内部扩展码解扩展部分解扩展序列。这可以有利地节省处理能力。在一个实施例中，外部扩展码用模拟电路解扩，内部扩展码用数字电路解扩。用于发射机的调制器可以通过直接序列扩展数据产生扩频序列，以产生部分扩展序列，然后扩展部分扩展序列以产生扩频序列。

9. 发明授权

US07746256B2 Analog to digital conversion using irregular sampling 有权
标题翻译：使用不规则采样的模数转换
公开(公告)号：US07746256B2
公开(公告)日：2010-06-29
申请号：US12245342
申请日：2008-10-03
申请人： Andreas Wiesbauer , Lajos Gazsi
发明人： Andreas Wiesbauer , Lajos Gazsi
IPC分类号： H03M3/00
CPC分类号： H03M1/1265 , G04F10/005 , H03M3/43 , H03M3/456
摘要： This disclosure relates to analog to digital conversion using irregular sampling.
摘要翻译：本公开涉及使用不规则采样的模数转换。

10. 发明申请

US20100066412A1 Method and Device for Recording Values of a Signal 审中-公开
标题翻译：用于记录信号值的方法和装置
公开(公告)号：US20100066412A1
公开(公告)日：2010-03-18
申请号：US12226072
申请日：2007-02-21
申请人： Andreas Bode
发明人： Andreas Bode
IPC分类号： G11B20/00
CPC分类号： H03M1/1265
摘要： The present invention relates to a method and an apparatus for reducing the quantity of values of a sampled signal which need to be stored. A value of the signal is stored if the value is outside, or at the edge of a, predefined value range whose size is determined by an upper limiting value and a lower limiting value. According to the invention, the size of the value range is changed, in particular is continuously reduced to zero, staring from a predefined starting size of the value range, which the values are being recorded.
摘要翻译：本发明涉及一种减少需要存储的采样信号的数量的方法和装置。如果值在外部，或在其大小由上限值和下限值确定的预定义值范围的边缘，则存储信号的值。根据本发明，改变值范围的大小，特别是从正被记录的值的值范围的预定的起始大小开始，连续地减小到零。

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