A SYSTEM FOR PROVIDING UNIFORM IMAGE QUALITY IN DISPLAYS FOR IMAGE REPRODUCTION

Although video display screens are factory calibrated to correct performance, they differ in the actual color balance presented to the viewer. Similarly, the output of video sources may vary, in particular from video cameras. For recalibration purposes, each video display screen is connected to the video source via a Central Processing Device, and each video display screen is calibrated when first installed by means of a test signal having a pre-defined color balance. The signal is analyzed by means of a three-color sensor, and the information is fed back to the Central Processing Device and stored along with a device identifier. Any subsequent video signal provided to a particular video display screen will be modified electronically by means of individual stored parameters. Video sources will have their output signals similarly modified after having been subjected to a similar analysis performed on a video display screen already calibrated.