Automatic video convergence system

Details Automatic video convergence system Automatic video convergence system

1992-10-19

1993-11-02

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 10, H04N 928

Patent

active

052588300

ABSTRACT:
An automatic convergence system for correcting misregistration of component color images in a projection video display unit. The system comprises control circuitry for generating target characters onto a projection surface, and a locator assembly for aiming a photosensor array at the displayed target images by means of a pair of stepper motors. The photosensor array detects the position of the target images and conveys this information to a microprocessor which in response calculates appropriate correction signals for application to vertical and horizontal convergence coils of the display system for effecting convergence of the component color images.

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