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91. 发明申请

US20160094240A1 SAMPLE RATE CONVERTER, AN ANALOG TO DIGITAL CONVERTER INCLUDING A SAMPLE RATE CONVERTER AND A METHOD OF CONVERTING A DATA STREAM FROM ONE DATA RATE TO ANOTHER DATA RATE 有权
标题翻译：采样率转换器，包括一个采样率转换器的数字转换器的模拟方法以及将数据流从一个数据速率转换到另一个数据速率的方法
公开(公告)号：US20160094240A1
公开(公告)日：2016-03-31
申请号：US14496980
申请日：2014-09-25
申请人： Anthony Evan O'Shaughnessy , Colin Lyden , Joseph Peter Canning
发明人： Anthony Evan O'Shaughnessy , Colin Lyden , Joseph Peter Canning
IPC分类号： H03M1/12
CPC分类号： H03M1/1245 , H03H17/0621 , H03H17/0642 , H03H17/0664 , H03H17/0685
摘要： It is known to perform sample rate conversion. A sample rate converter is arranged to receive digital data at an input sample rate Fs and to output data at an output sample rate Fo, where Fo=Fs/N, and N is decimation factor greater than 1. A problem can arise with sample rate converters when a user wishes to change the decimation rate. Generally a sample rate converter needs to discard the samples in its filter when the decimation rate is changed, and the filter output is unusable until the filter has refilled with values taken at the new decimation rate. The sample rate converter provided here does not suffer from this problem. The sample rate converter includes at least Q channels. Each channel comprises a Qth order filter arranged to select input signals at predetermined intervals from a run of P input signals, and to form a weighted sum of the selected input signals to generate an output value, and where the runs of P input signals of one channel are offset from the runs of P signals of the other channels.
摘要翻译：已知进行采样率转换。采样率转换器被布置为以输入采样率Fs接收数字数据，并以输出采样率Fo输出数据，其中Fo = Fs / N，N是抽取因子大于1.可能会出现采样率的问题转换器，当用户希望改变抽取率时。通常，抽样速率改变时，采样率转换器需要丢弃其滤波器中的样本，并且滤波器输出不可用，直到滤波器用新的抽取率取值为止。这里提供的采样率转换器不会受到这个问题的困扰。采样率转换器至少包括Q个通道。每个通道包括Q阶滤波器，其布置成从P个输入信号的行程中以预定间隔选择输入信号，并且形成所选输入信号的加权和以产生输出值，并且其中一个P输入信号的运行通道偏离其他通道的P信号的运行。

92. 发明申请

US20150188692A1 SIGNAL GENERATING DEVICE 有权
标题翻译：信号发生器
公开(公告)号：US20150188692A1
公开(公告)日：2015-07-02
申请号：US14418254
申请日：2013-07-31
申请人： Mitsubishi Electric Corporation
发明人： Hiroki Iura , Koji Tomitsuka
IPC分类号： H04L7/00 , H04L7/08
CPC分类号： H04L7/0025 , H03H17/0227 , H03H17/0286 , H03H17/0294 , H03H17/0621 , H03H2017/0222 , H04L7/08
摘要： A signal generating device includes a first digital filter unit outputting a first interpolated signal by interpolating an input signal, a second digital filter unit outputting a second interpolated signal by interpolating the first interpolated signal, a phase calculation unit calculating a phase of a digital signal, a phase-accuracy conversion unit calculating first phase signal and second phase signal, a first memory storing filter coefficients, a first coefficient readout unit reading filter coefficients from the first memory and switching filter coefficients of the first digital filter unit, a phase-error calculation unit calculating a phase error signal, a second memory storing filter coefficients, a second coefficient readout unit reading filter coefficients from the second memory, and a gain normalization unit normalizing a gain of the filter coefficients to maintain a constant sum of the filter coefficients and switching filter coefficients of the second digital filter unit.
摘要翻译：信号发生装置包括通过内插输入信号输出第一内插信号的第一数字滤波器单元，通过内插第一内插信号输出第二内插信号的第二数字滤波器单元，计算数字信号的相位的相位计算单元，计算第一相位信号和第二相位信号的相位精度转换单元，存储滤波器系数的第一存储器，从第一存储器读取滤波器系数的第一系数读出单元和第一数字滤波器单元的切换滤波器系数，相位误差计算计算相位误差信号的单元，存储滤波器系数的第二存储器，从第二存储器读取滤波器系数的第二系数读出单元和对滤波器系数的增益进行归一化的增益归一化单元，以维持滤波器系数和切换的恒定和第二数字滤波器单元的滤波器系数。

93. 发明授权

US09009032B2 Method and system for performing sample rate conversion 有权
标题翻译：执行采样率转换的方法和系统
公开(公告)号：US09009032B2
公开(公告)日：2015-04-14
申请号：US11558168
申请日：2006-11-09
申请人： David Wu , Keith Klinger
发明人： David Wu , Keith Klinger
IPC分类号： G10L11/00 , G10L19/00 , G10L21/00 , H03H17/06 , G11B20/00 , G11B20/10
CPC分类号： H03H17/0621 , G11B20/00007 , G11B20/10037 , G11B20/10527 , G11B2020/00014 , G11B2020/10592 , G11B2020/10981 , G11B2220/2541 , G11B2220/2579 , H03H2218/06
摘要： A method and system for performing sample rate conversion is provided. The method may include configuring a system to convert a sample rate of a first audio channel of a plurality of audio channels to produce a first audio stream of samples. The system may be dynamically reconfigured to convert a sample rate of a second of the plurality of audio channels to produce a second audio stream of samples, wherein the first and second audio streams are output from the system at the same time. The method may further include arbitrating between request for additional data from the first and second audio stream of samples, where processing of the first channel is suspended when the request corresponds to a second channel that is of higher priority.
摘要翻译：提供了一种用于执行采样率转换的方法和系统。该方法可以包括配置系统以转换多个音频通道中的第一音频通道的采样率以产生第一音频采样流。系统可以被动态地重新配置以转换多个音频通道中的第二个音频通道的采样率，以产生第二音频采样流，其中同时从系统输出第一和第二音频流。该方法还可以包括在来自第一和第二音频采样流的对附加数据的请求之间进行仲裁，其中当请求对应于具有较高优先级的第二信道时，暂停第一信道的处理。

94. 发明申请

US20140361913A1 COMMUNICATION SYSTEM AND SAMPLE RATE CONVERTER THEREOF 有权
标题翻译：通信系统和采样率转换器
公开(公告)号：US20140361913A1
公开(公告)日：2014-12-11
申请号：US14283301
申请日：2014-05-21
申请人： MStar Semiconductor, Inc.
发明人： Ming-Yu Hsieh , Shih-Chieh Yen , Khurram Muhammad
IPC分类号： H03M1/66 , H03M3/00
CPC分类号： H03M1/66 , H03H17/0294 , H03H17/0621 , H03M3/30 , H03M3/496 , H03M3/498
摘要： A communication system including a configurable sample rate converter and a controller is provided. The configurable sample rate converter, configured to convert a digital signal with a first sample rate to a converted signal with a second sample rate, being operable in one of a first configuration and a second configuration. The controller, configured to dynamically control the sample rate converter to operate in one of the first configuration and the second configuration according to at least one condition.
摘要翻译：提供了包括可配置采样率转换器和控制器的通信系统。可配置采样率转换器，被配置为将具有第一采样率的数字信号转换为具有第二采样率的转换信号，其可在第一配置和第二配置中的一个中操作。控制器被配置为根据至少一个条件动态地控制采样率转换器以工作在第一配置和第二配置之一中。

95. 发明授权

US08768995B2 Multi-branch rate change filter 有权
标题翻译：多分支速率变化滤波器
公开(公告)号：US08768995B2
公开(公告)日：2014-07-01
申请号：US13119163
申请日：2010-08-13
申请人： Pierre-Andre Laporte
发明人： Pierre-Andre Laporte
IPC分类号： G06F17/17
CPC分类号： H03H17/0621 , H03H17/0223 , H03H17/0275 , H03H17/0685 , H03H2017/0247
摘要： The multi-branch rate change filter of the present invention achieves higher effective output rates by processing the input sample stream in two or more parallel filter branches with offset states.
摘要翻译：本发明的多分支速率变化滤波器通过处理具有偏移状态的两个或更多个并行滤波器分支中的输入采样流来实现更高的有效输出速率。

96. 发明申请

US20130287145A1 BASE BAND PROCESSOR WITH PEAK SUPPRESSION FUNCTION, TRANSMITTER WITH THE SAME AND METHOD OF TRANSMITTING SIGNAL 有权
标题翻译：具有峰值抑制功能的基带处理器，具有相同功能的发送器和发送信号的方法
公开(公告)号：US20130287145A1
公开(公告)日：2013-10-31
申请号：US13620675
申请日：2012-09-14
申请人： Young Seo PARK
发明人： Young Seo PARK
IPC分类号： H04L25/06
CPC分类号： H04L27/2624 , H03H17/0621 , H04L25/00 , H04L27/2614
摘要： There are provided a base band processor having a peak suppression function, a transmitter, and a method of transmitting a signal. The base band processor includes: a signal generating unit generating digital signals; a variable up/down sampling unit changing a sampling rate in real time according to a magnitude of signal bandwidth changed in real time and sampling the digital signals from the signal generating unit according to the sampling rate; a peak suppression processing unit detecting peak power of sampled signals from the variable up/down sampling unit for a respective section in which a peak exists and suppressing corresponding peak power according to the peak power of the respective section; and a signal converting unit converting the digital signals from the peak suppression processing unit into analog signals.
摘要翻译：提供了具有峰值抑制功能的基带处理器，发送器和发送信号的方法。基带处理器包括：产生数字信号的信号产生单元; 可变上/下采样单元，根据实时改变的信号带宽的大小实时改变采样率，并根据采样率对来自信号发生单元的数字信号进行采样; 峰值抑制处理单元，对于存在峰值的各个部分，从可变上/下取样单元检测采样信号的峰值功率，并根据各部分的峰值功率抑制相应的峰值功率; 以及信号转换单元，将来自峰值抑制处理单元的数字信号转换为模拟信号。

97. 发明申请

US20130279562A1 Shift-Invariant Digital Sampling Rate Conversion System 有权
标题翻译：移位不变数字采样率转换系统
公开(公告)号：US20130279562A1
公开(公告)日：2013-10-24
申请号：US13881581
申请日：2011-10-27
申请人： Stéphan Tassart
发明人： Stéphan Tassart
IPC分类号： H04L1/00
CPC分类号： H04L1/0002 , H03H17/0416 , H03H17/0455 , H03H17/0621 , H03H17/0685
摘要： There is described a method of making a linear periodically time varying system shift-invariant, comprising the following steps implemented for each input signal the sampling rate of which has to be converted: —generating a set of polyphase components based on the input signal, —feeding the generated set of polyphase components to the system, and —generating an output signal by performing interleaving, shifting and addition on signals output by the system corresponding to the generated set of polyphase components processed by the system.
摘要翻译：描述了一种制造线性周期性时变系统偏移不变量的方法，包括为每个输入信号实现以下步骤，其中采样速率必须被转换： - 基于输入信号产生一组多相分量，将生成的多相分量组合馈送到系统，并且通过对由系统处理的生成的多相分量组合对应的系统输出的信号执行交织，移位和相加来产生输出信号。

98. 发明授权

US08477056B2 Method, system, and apparatus for interpolating an output of an analog-to-digital converter 有权
标题翻译：用于内插模数转换器的输出的方法，系统和装置
公开(公告)号：US08477056B2
公开(公告)日：2013-07-02
申请号：US12791694
申请日：2010-06-01
申请人： Han Henry Sun , Kuang-Tsan Wu , Yuejian Wu , Sandy Thomson , John D. McNicol , David J. Krause
发明人： Han Henry Sun , Kuang-Tsan Wu , Yuejian Wu , Sandy Thomson , John D. McNicol , David J. Krause
IPC分类号： H03M1/12
CPC分类号： H03H17/0621 , H03H17/0685 , H03H2017/0298
摘要： A system, method, and apparatus is disclosed for interpolation of an output of an analog to digital converter (ADC) to enable operation of the ADC at a sampling rate that is independent of the sampling rate for a DSP core so as to efficiently enable operation at higher date rates. According to one of the embodiments, an interpolation circuit is coupled between the ADC and DSP core and receives a first plurality of samples of data at the first data rate from the ADC and supplies a plurality of samples of second data at a second data rate to the DSP core; the second data rate being less than the first data rate. According to one of the embodiments, the interpolation circuit includes a memory and a FIR filter circuit having filter tap coefficient values selected to provide attenuation at high frequencies to reduce aliasing noise.
摘要翻译：公开了一种用于对模数转换器（ADC）的输出进行插值的系统，方法和装置，以使得能够以独立于DSP核的采样率的采样速率对ADC进行操作，以便有效地使能操作以较高的日期率。根据实施例之一，内插电路耦合在ADC和DSP内核之间，并从ADC接收第一数据速率的第一多个数据采样，并将第二数据的多个样本以第二数据速率提供给 DSP内核; 第二数据速率小于第一数据速率。根据实施例中的一个，内插电路包括存储器和具有滤波器抽头系数值的FIR滤波器电路，该滤波器抽头系数值被选择以在高频率下提供衰减以减少混叠噪声。

99. 发明申请

US20120310601A1 INTERLEAVED DIGITAL DOWN-CONVERSION ON A TEST AND MEASUREMENT INSTRUMENT 有权
标题翻译：测试和测量仪器上的交互式数字下变频
公开(公告)号：US20120310601A1
公开(公告)日：2012-12-06
申请号：US13270752
申请日：2011-10-11
申请人： Gregory A. MARTIN
发明人： Gregory A. MARTIN
IPC分类号： G06F15/00
CPC分类号： G01R19/2506 , G01R13/0272 , H03H17/0223 , H03H17/0275 , H03H17/0621 , H03H17/0685 , H03M1/1215
摘要： A digital down-conversion acquisition function, includes a key spectral analysis function, in time-interleaved acquisition systems to enable acquisitions at very high sample rates and bandwidths. Digital down-conversion allows data compression into acquisition memory for down-converted complex baseband I/Q data within a given frequency range of interest. With a fixed-size acquisition memory, this enables acquisitions over a longer time span, thus enabling a lower spectral resolution bandwidth. These approaches allow down-converted complex baseband I/Q data from a narrow frequency band of interest to be acquired efficiently. Reconstruction of the acquired down-converted waveform from the time-interleaved components stored in each acquisition memory of each distributed acquisition components to result in a coherent waveform is also disclosed.
摘要翻译：数字下变频采集功能包括关键频谱分析功能，在时间交替采集系统中，以非常高的采样率和带宽采集。数字下变频允许将数据压缩到采集存储器中，用于在给定的感兴趣频率范围内的下变频复数基带I / Q数据。利用固定尺寸的采集存储器，可以在更长的时间内进行采集，从而实现更低的光谱分辨率带宽。这些方法允许有效地获取来自所关心的窄频带的下变频的复基带I / Q数据。还公开了从每个分布式采集分量的存储在每个采集存储器中的时间交织分量获得的下变频波形的重构以产生相干波形。

100. 发明授权

US08160887B2 Adaptive interpolation in upsampled audio signal based on frequency of polarity reversals 有权
标题翻译：基于极性反转频率的上采样音频信号中的自适应插值
公开(公告)号：US08160887B2
公开(公告)日：2012-04-17
申请号：US11658183
申请日：2005-03-10
申请人： Mitsugi Fukushima
发明人： Mitsugi Fukushima
IPC分类号： G10L21/04
CPC分类号： H03H17/0621 , G10L21/038 , G11B20/10009 , G11B20/10527 , G11B2020/10546 , G11B2020/10564 , G11B2020/10583 , H03H17/028 , H03H17/0294 , H03M1/661
摘要： Digital audio sample data are adaptively processed for interpolation based on whether the frequency at which the digital audio signal samples reverse polarity is at least equal to a predetermined threshold, the threshold being determined by their sampling frequency. If so, the digital audio signal samples are subjected to zero-order interpolation, with zero-inserting between the samples followed by lowpass filtering; if not, the samples are subjected to Lagrange (spline) interpolation processing.
摘要翻译：基于数字音频信号取样反极性的频率是否至少等于预定阈值，数字音频采样数据被自适应地处理以用于插值，该阈值由其采样频率确定。如果是这样，数字音频信号样本经过零次插值，零插入样本后进行低通滤波; 如果不是，则对样本进行拉格朗日（样条）插值处理。

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