Decoder for subsampled video signal

Details Decoder for subsampled video signal Decoder for subsampled video signal

1990-02-01

1991-05-21

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 36, 358105, 358138, 358167, H04N 712

Patent

active

050180100

ABSTRACT:
Disclosed is a MUSE decoder for a pixel signal sampled in accordance with Multiple Sub-nyquist Sampling Encoding (MUSE). An interframe interpolation circuit (142) applies a pixel signal Sg which is not subjected to noise reduction processing to an intrafield interpolation circuit (18') for motion picture processing through a signal line (L5). A pixel signal delayed, which is outputted from delay circuits (24a, 24b) is subjected to a required noise reduction processing by an adder 60. Since the intrafield interpolation circuit 18' receives the pixel signal Sg which is not subjected to the noise reduction processing, an adverse influence on a motion picture, which may be caused by the noise reduction, is prevented even in case that the delay circuits (24a, 24b) are shared for motion picture processing and still picture processing.

REFERENCES:
patent: 4692801 (1987-09-01), Ninomiya et al.
patent: 4873573 (1989-10-01), Thomas
patent: 4942466 (1990-07-01), Sandbank
patent: 4954894 (1990-09-01), Kitaura
"MUSE: Transmission System of High Vision Broadcast Via Satellite", Nikkei Electronics, Nov. 2, 1987, pp. 189-212.

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