Sampling rate conversion using polyphase filters with interpolat

Details Sampling rate conversion using polyphase filters with interpolat Sampling rate conversion using polyphase filters with interpolat

1992-10-23

1993-12-28

Hoff, Marc S.

Coded data generation or conversion

Digital code to digital code converters

Data rate conversion

358 11, H03M 700

Patent

active

052743721

ABSTRACT:
A sampling rate converter for converting an input digital signal, such as D2 PAL, into an output digital signal, such as D1 PAL, has a pair of polyphase filters. The input digital signal is input in parallel to the two polyphase filters, with the phase selected by one of the filters being offset by one from that of the other. The outputs of the polyphase filters are input to a linear interpolator to produce the output digital signal. The resolution of the sampling rate conversion is a function of the number of phases N of the polyphase filters and the number of interpolation steps M of the interpolator.

REFERENCES:
patent: 4954824 (1990-09-01), Yamada et al.
patent: 5128760 (1992-07-01), Chauvel
patent: 5182633 (1993-01-01), Antonio et al.
patent: 5204827 (1993-04-01), Fujita et al.

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