Assistance system for cathode ray tube adjustment

Abstract

Abstract The system is of the type which uses a video camera (2) to capture test patterns displayed on the screen (3) of the cathode ray tube (1) to be adjusted. The camera (2) is connected, by way of an image-processing device (4), to a programmed processing unit (5, 8); the latter compares the coordinates of the points of the scanned test pattern (7) with the theoretical coordinates of these points, separating therefrom the influence of the various maladjustments in the deformation of the test pattern. The unit (5, 8) is connected to display means (10) for viewing maladjustment indices. Application to the adjusting of computer terminals, television receivers, monitors, etc. <IMAGE>

Inventors

• 👤 Philippe Aujames
• 👤 Jean-Pierre Pellet
• 👤 Philippe Scharff

Bibliographic Details