Digital filter

Details Digital filter Digital filter

1992-04-16

1994-05-10

Nguyen, Long T.

Boots, shoes, and leggings

G06F 1531

Patent

active

053114574

ABSTRACT:
A digital filter device is for use in signal processing paths for parallel processing n series of input signals having a common sampling frequency f.sub.i and parallel delivering n series of output signals. Input signals of the n series are sequentially switched for delivery to a single FIR (finite-duration impulse response) filter which is commonly used in a time sharing manner so that the FIR filter is shared by the n series of signals. Use of time shared FIR filter allows for the construction of the digital filter device from a reduced number of elements. Also provided is a sampling frequency conversion apparatus using the digital filter. A MUSE (multiple sub-Nyquist subsampling encoding) decoder uses a single sampling frequency conversion apparatus for both still and motion picture signal processing paths in a time sharing manner.

REFERENCES:
patent: 4389538 (1983-06-01), White
patent: 4725972 (1988-02-01), Gockler
patent: 4893265 (1990-01-01), Hirosaki
patent: 4903019 (1990-02-01), Ito

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