US 6,285,463 B1 · Method and apparatus for image compensation of blooming artifacts

Abstract

The present invention is a method and apparatus to minimize and prevent blooming problems in color image systems. Particular applicability is found where an image on image system is employed. The invention is inserted into the colorant driving signal path of the system. The invention places an averaging circuit in the path of one or more colorant driving signal streams. The averaging circuit produces an average value signal representative of a small area of its respective colorant. A modulator or other signal varying device responsive to the average value signal is placed in the path of yet another but separate colorant driving signal stream. In this manner the separate colorant driving signal is modulated or varied in response to the average neighboring value of a different color thus minimizing and preventing image blooming.

Claims24

Dependent claims

A blooming compensator for a color imaging system comprising:

at least two video inputs, receiving a first colorant driving signal and at least a second colorant driving signal;
a pixel averaging circuit receiving the first colorant driving signal, and generating a correction signal responsive thereto;
a memory device storing a look up table and receiving for each pixel, both the correction signal and the second colorant driving signal, and in response to same, generating a code signal;
signal pulse forming electronics responsive to the code signal to produce a suitable signal pulse to an output writer in the color imaging system.

1 more element

Dependencies are inferred from the claim text.

Method and apparatus for image compensation of blooming artifacts

Life of this patent

Method and apparatus for image compensation of blooming artifacts

Life of this patent

Abstract

Claims24