Signal correction circuit

Details Signal correction circuit Signal correction circuit

1994-07-21

2000-02-22

Faile, Andrew I.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348616, H04N 964

Patent

active

060286288

ABSTRACT:
A signal correction circuit for correcting deviating pixel values includes a part (113, 117) for comparing a first pixel value (R.sub.orig) of a given pixel with a second value (R.sub.filt) obtained from pixel values of pixels surrounding the given pixel so as to supply a decision signal (decR) if a predetermined criterion is satisfied; and a multiplexer (115) coupled to the above-noted part (113, 117) for supplying the second value (R.sub.filt) if the predetermined criterion is satisfied for not more than one color (R,G,B), and for supplying the first pixel value (R.sub.orig) in the opposite case.

REFERENCES:
patent: 3904818 (1975-09-01), Kovac
patent: 4481539 (1984-11-01), Meise et al.
patent: 4485399 (1984-11-01), Schulz et al.
patent: 4541116 (1985-09-01), Lougheed
patent: 4701784 (1987-10-01), Matsuoka et al.
patent: 4858013 (1989-08-01), Matsuda
patent: 4975864 (1990-12-01), Sendall et al.
patent: 5144446 (1992-09-01), Suda et al.
"Digital Automatic Pixel Correction In New Generation CCD Broadcast Cameras", by B. Botte, IBC 1992, pp. 474-478.

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