Apparatus for suppressing pseudo-contours in video signals

Details Apparatus for suppressing pseudo-contours in video signals Apparatus for suppressing pseudo-contours in video signals

1992-06-19

1995-05-30

Powell, Mark R.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348253, 348711, H04N 5208

Patent

active

054206332

ABSTRACT:
An image signal processing device includes a luminance information detecting circuit which detects luminance information on an object and a filter circuit to which an image signal is supplied from an image sensing system. The filtering characteristic of the filter circuit is arranged to be switched from one characteristic over to another according to the detection output of the luminance information detecting circuit, so that the generation of a pseudo-contour can be prevented.

REFERENCES:
patent: 4090221 (1978-05-01), Connor
patent: 4591899 (1986-05-01), Hashimoto
patent: 4651196 (1987-03-01), Harwood et al.
patent: 4991021 (1991-02-01), Nikoh et al.
patent: 5153727 (1992-10-01), Choi
Translation of Japan 2-285779.

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