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91. 发明授权

US4204177A Non-recursive digital filter with reduced output sampling frequency 失效
标题翻译：具有降低输出采样频率的非递归数字滤波器
公开(公告)号：US4204177A
公开(公告)日：1980-05-20
申请号：US767549
申请日：1977-02-10
申请人： Ludwig D. J. Eggermont
发明人： Ludwig D. J. Eggermont
IPC分类号： H03H17/00 , H03H17/06 , H03H7/28 , G11C19/00 , G11C21/00 , H03K5/156
CPC分类号： H03H17/0664 , H03H17/0621
摘要： Non-recursive digital filters having an output sampling frequency which is a factor of r lower than the input sampling frequency. A number of filters are described in which for each value of r and N (N being the number of filter coefficients) the time which is required to calculate an output sample is based on the output sampling period T.sub.u. This is achieved by using a storage device in the input circuit.
摘要翻译：具有低于输入采样频率r的因子的输出采样频率的非递归数字滤波器。描述了多个滤波器，其中对于r和N的每个值（N是滤波器系数的数量），计算输出采样所需的时间是基于输出采样周期Tu。这通过在输入电路中使用存储装置来实现。

92. 发明授权

US3543009A Binary transversal filter systems 失效
标题翻译：二进制过滤系统
公开(公告)号：US3543009A
公开(公告)日：1970-11-24
申请号：US3543009D
申请日：1967-09-05
申请人： RESEARCH CORP
发明人： VOELCKER HERBERT B JR
IPC分类号： H03H17/06 , H04L25/03 , G06F15/34 , G11C19/00 , H03K5/156
CPC分类号： H03H17/06 , H03H17/0621 , H04L25/03133

93. 发明授权

US3501750A Data compression processor 失效
标题翻译：数据压缩处理器
公开(公告)号：US3501750A
公开(公告)日：1970-03-17
申请号：US3501750D
申请日：1967-09-19
申请人： NASA , WEBB JAMES E
发明人： ANDERSON TAGE O
IPC分类号： G06F17/40 , H03H17/06 , G06F1/00
CPC分类号： H03H17/0621

94. 发明授权

US11676615B2 Resampling output signals of QMF based audio codec 有权
公开(公告)号：US11676615B2
公开(公告)日：2023-06-13
申请号：US17737941
申请日：2022-05-05
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Markus Lohwasser , Manuel Jander , Max Neuendorf , Ralf Geiger , Markus Schnell , Matthias Hildenbrand , Tobias Chalupka
IPC分类号： G10L19/24 , G10L19/16 , G10L19/008 , G10L19/02 , G10L19/26 , H03H17/02 , H03H17/06
CPC分类号： G10L19/24 , G10L19/008 , G10L19/0204 , G10L19/16 , G10L19/26 , H03H17/0211 , H03H17/0272 , H03H17/0621 , G10L19/02 , H03H17/0294
摘要： An apparatus for processing an audio signal includes a configurable first audio signal processor for processing the audio signal in accordance with different configuration settings to obtain a processed audio signal, wherein the apparatus is adapted so that different configuration settings result in different sampling rates of the processed audio signal. The apparatus furthermore includes n analysis filter bank having a first number of analysis filter bank channels, a synthesis filter bank having a second number of synthesis filter bank channels, a second audio processor being adapted to receive and process an audio signal having a predetermined sampling rate, and a controller for controlling the first number of analysis filter bank channels or the second number of synthesis filter bank channels in accordance with a configuration setting.

95. 发明授权

US11652472B2 Digital interpolation filter, corresponding rhythm changing device and receiving equipment 有权
公开(公告)号：US11652472B2
公开(公告)日：2023-05-16
申请号：US16956159
申请日：2018-12-10
申请人： B-COM
发明人： Stéphane Paquelet , Ali Zeineddine
IPC分类号： H03H17/02 , G06F17/17 , H03H17/06 , H04L25/03
CPC分类号： H03H17/0294 , G06F17/17 , H03H17/0211 , H03H17/0621 , H04L25/03006 , H03H2017/0214 , H04L2025/03509
摘要： A digital interpolation filter delivering a series of output samples approximating a signal x(t) at sampling instants of the form (n+d)T s based on a series of input samples of the signal x(t) taken at sampling instants of the form nT s. Such a filter implements a transfer function in the Z-transform domain, H c d (Z−1), expressed as a linear combination between: a first transfer function H 1 d (Z−1) representing a Lagrange polynomial interpolation of the input samples implemented according to a Newton structure (100); and a second transfer function H 2 d (Z−1) representing another polynomial interpolation of the input samples implemented according to another structure comprising at least the Newton structure; the linear combination being a function of at least one real combination parameter c.

96. 发明申请

US20180143229A1 SEMICONDUCTOR DEVICE AND MEASURING METHOD 审中-公开
公开(公告)号：US20180143229A1
公开(公告)日：2018-05-24
申请号：US15796995
申请日：2017-10-30
申请人： Renesas Electronics Corporation
发明人： Makoto SHUTO , Kazuyoshi KAWAI , Mitsuya FUKAZAWA , Robert NOLF , Robert DALBY
IPC分类号： G01R21/133 , H03G3/20 , H03M3/00 , H03M1/38 , G01R19/252
CPC分类号： G01R21/133 , G01R19/252 , H03G3/20 , H03H17/0621 , H03M1/1205 , H03M1/38 , H03M3/458
摘要： There is a need for high-order frequency measurement without greatly increasing consumption currents and chip die sizes. A semiconductor device includes: an electric power measuring portion that performs electric power measurement; a high-order frequency measuring portion that performs high-order frequency measurement; and a clock controller that supplies an electric power measuring portion with a first clock signal at a first sampling frequency and supplies a high-order frequency measuring portion with a second clock signal at a second sampling frequency. The second sampling frequency is higher than the first sampling frequency.

97. 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。

98. 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。

99. 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。

100. 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。

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