Patent ID: 6717625
Filing Date: 2004-04-06
Classification: H04N

Abstract:
Method for automatically adjusting at least one projected picture (9-9A), each picture (9-9A) being projected by a projector (1-1A) generating a number of light beams of different color, the projector having a first operation phase during which test pictures are projected for correction of the projector and a second operation phase being normal use of the projector during which a video signal is projected, the projected picture (9-9A) being automatically adjusted with respect to one or more of convergence, geometry, adjoining geometry, overlapping geometry, focus, astigmatism, contrast modulation, gamma correction, soft-edge, picture tube ageing wherein, by means of feedback during normal use of the projector (1-1A), a time-dependent automatic adjustment is provided by means of mathematical models which are based on the influencing factors which are relevant for the before mentioned adjustment.