Digital video signal processing apparatus for data rate down-con

Details Digital video signal processing apparatus for data rate down-con Digital video signal processing apparatus for data rate down-con

1991-11-22

1993-03-16

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358166, 358 37, 36472416, H04N 964

Patent

active

051949393

ABSTRACT:
A digital video signal processing apparatus for reducing the data rate of, and interpolating digital, video signals of a component format. The apparatus comprises a half-band high pass filter having a coefficient profile equivalent to that obtained by setting a center coefficient of an odd-order half-band low pass filter to zero, or a notch filter having a coefficient profile equivalent to that obtained by eliminating a center coefficient and even-numbered coefficients of such a low pass filter, and a delay line for giving a predetermined delay time to the signal supplied thereto, whereby the data rate of multiplexed or time-divided signals can be reduced, or the signals interpolated, in a relatively simple design employing a single digital filter.

REFERENCES:
patent: 4538178 (1985-08-01), Bolger
patent: 4668988 (1987-05-01), Sasaki
patent: 4835723 (1989-05-01), Hansen
patent: 4837624 (1989-06-01), Heitmann
patent: 4947408 (1990-08-01), Sadr
patent: 5103416 (1992-05-01), Cavallotti

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