Digital video signal processing method and apparatus therefor

Details Digital video signal processing method and apparatus therefor Digital video signal processing method and apparatus therefor

1989-05-12

1991-08-20

Shepperd, John W.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 13, H04N 713, H04N 1104

Patent

active

050419064

ABSTRACT:
A video signal is sampled with a sampling frequency which is at least four times of the highest frequency of the video signal, subsequently, sampled signals are converted into digital signals and component thereof which are higher than the highest frequency of the video signal are eliminated by a low pass filter, then, remaining sampled signals are alternately decimated by a decimation circuit, thus the sampling frequency is reduced in appearance to the half thereof.

REFERENCES:
patent: 4496967 (1985-01-01), Sase et al.
"Proceedings of the IEEE", vol. 69, No. 3, 1981, "Interpolation and the Decination of Digital Signals--A Intorial Review" pp. 300-331.

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