Auto-Setup Digital Convergence System for Projection TV

Abstract

We developed a auto-setup digital convergence system for projection TV set which can readjust the convergence with one touch operation. The system can measure the dislocation of the image in each overscaned area where 8 photo detectors are located one respectively. Therefore, it can recover the good convergence state at any time which was adjusted before misconvergence. In conclusion, we got the convergence accuracy less than 0.3% of the screen height as well as the recovering time less that 2 minutes in 50-in. NTSC TV set.