Sampling rate converter

Details Sampling rate converter Sampling rate converter

1990-03-27

1991-11-26

Britton, Howard W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 12, H04N 1104

Patent

active

050687166

ABSTRACT:
In a sampling rate converter, an input digital video signal has its sampling rate converted from a first sampling frequency to a second or different sampling frequency by oversampling the input digital video signal at a rate which is an integral multiple of the first sampling frequency so as to generate zero values between data of the input digital video signal, interpolating an output signal from the oversampled input digital video signal, decimating the interpolated output signal for generating therefrom a digital video signal having the desired second sampling frequency, and only then applying the digital video signal having the second sampling frequency to a low pass filter, preferably of the finite impulse response type, for eliminating therefrom an undesirable signal component which is due to the sample rate conversion and which appears between frequency bands of one-half of the first and second sampling frequencies, respectively.

REFERENCES:
patent: 4520386 (1985-05-01), Asaida
patent: 4870661 (1989-09-01), Yamada et al.
patent: 4949177 (1990-08-01), Bannister et al.
Sampling Rate Up/Down Converter, Gillies et al., IEEE Transactions on Consumer Electronics, vol. 34, No. 1, Feb. 1988, pp. 256-261.

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