Process and device for image display with automatic defect corre

Details Process and device for image display with automatic defect corre Process and device for image display with automatic defect corre

1990-10-03

1992-02-25

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358139, H04N 1702

Patent

active

050917730

ABSTRACT:
An automatic defect correction drive utilizing feedback in an image display device. According to the present invention, during an acquisition phase, a test image constituted of bright points of known positions distributed on a screen is displayed. This displayed image is then analyzed via an image acquisition device, to deduce from it the scanning, focusing and amplitude corrections to be applied to the display, so that the test pixels displayed on the screen have their expected positions and characteristics. These corrections are then interpolated for the intermediate pixels between test points, and then, during a continuation phase, these corrections are updated.

REFERENCES:
patent: 4354243 (1982-10-01), Ryan et al.
patent: 4439735 (1984-03-01), Alvite et al.
patent: 4533950 (1985-08-01), Harshbarger
patent: 4687973 (1987-08-01), Holmes et al.
patent: 4730213 (1988-03-01), Kelly, III et al.
patent: 4760447 (1988-07-01), Koka et al.

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