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1. 发明申请

WO2011085947A1 SAMPLING RATE CONVERTER DATA FLOW CONTROL MECHANISM 审中-公开
标题翻译：采样率转换器数据流量控制机制
公开(公告)号：WO2011085947A1
公开(公告)日：2011-07-21
申请号：PCT/EP2011/000034
申请日：2011-01-07
申请人： ST-ERICSSON SA , TUDOSE, Andrei
发明人： TUDOSE, Andrei
IPC分类号： H03H17/06 , H04L7/00
CPC分类号： H04L7/0029 , H03H17/0219 , H03H17/0621 , H03H17/0657
摘要： Sampling rate converter for performing a rate conversion of an incoming stream of data, clocked at a first frequency, and output at a second frequency; said converter comprising: a circuit (2) for up-sampling the incoming data stream; a filter (3) for filtering the up-sampled incoming data stream; an interpolation filter (4) for interpolating the filtered up-sampled incoming stream of data; a FIFO (5) for storing the interpolated filtered up-sampled incoming stream of data, said storing being performed at said first frequency and the reading of said FIFO being performed at said second frequency so as to output the stored data at a second corresponding rate; characterized in that it further comprises: a control block (10) comprising a numerically controlled oscillator (NCO) used for generating said first frequency, the control of said NCO being based on information representative of the status of said FIFO (5) and also information representative of the modulation of the data and ratio of sampling rate change.
摘要翻译：采样率转换器，用于执行以第一频率计时并以第二频率输出的输入数据流的速率转换; 所述转换器包括：用于对输入数据流进行上采样的电路（2）; 滤波器（3），用于过滤上采样的输入数据流; 内插滤波器（4），用于内插经滤波的上采样的数据流; 一个FIFO（5），用于存储内插滤波的上采样输入数据流，所述存储以所述第一频率执行，并且所述FIFO的读取以所述第二频率执行，以便以第二对应速率输出所存储的数据 ; 其特征在于，还包括：包括用于产生所述第一频率的数控振荡器（NCO）的控制块（10），所述NCO的控制是基于表示所述FIFO（5）的状态的信息，以及信息代表数据的调制和采样率的变化率。

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