Patent ID: 8730079

Claim:
A sampling rate converter for performing a sampling rate conversion of an incoming stream of data clocked at a first frequency and output at a second frequency; the converter comprising: an up-sampling circuit adapted to up-sample the incoming data stream; a filter adapted to filter the up-sampled incoming data stream; an interpolation filter adapted to interpolate the filtered up-sampled incoming stream of data; a FIFO adapted to store the interpolated filtered up-sampled incoming stream of data (the IFUI stream of data), the FIFO being adapted to store the IFUI stream of data at the first frequency and being further adapted to enable reading of the IFUI stream of data from the FIFO at the second frequency so as to output the stored IFUI stream of data at a second corresponding rate; a control block comprising a numerically controlled oscillator (NCO) wherein the NCO is adapted to generate the first frequency; and wherein control of the NCO is based on information representative of the status of the FIFO, information representative of the modulation of the stream of data, and a ratio of sampling rate change between the incoming stream of data and output stream of data.