Digital rate converter

Details Digital rate converter Digital rate converter

2004-01-20

2008-03-11

Jeanglaude, Jean Bruner (Department: 2819)

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

C341S118000, C341S119000, C375S326000

Reexamination Certificate

active

07342518

ABSTRACT:
A method and apparatus of converting a data signal in a digital rate converter including upsampling the input data signal at an input sampling rate to an intermediate data signal at an intermediate sampling rate, where the intermediate data signal sample values are stored in a buffer. A plurality of buffer position values are provided from a subset of buffer positions of the buffer to an interpolator, the subset of buffer positions being dependent upon a position indicator. An output data signal is provided by the interpolator at an output sampling rate, where the value of the output data signal is dependent upon a fractional indicator provided to the interpolator. The input sampling rate is based on a first clock signal and the output sampling rate is based on a second clock signal, wherein the first and second clock signal are independent of each other.

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