| 摘要 |
FIELD: videotechnology. SUBSTANCE: invention is related to methods of representation of pattern information on screens of collective use, in particular, advertising information with the aid of devices in which laser radiation is information carrier, and screen-carrier may be natural or artificial atmospheric and land formations, such as clouds, accumulation of steam, smoke, air balloons, and other possible screens. Method consists in preliminary determination of distance to screen and integrated coefficient of reflection of screen, in formation of controlling signal to correct depth of modulation, in focusing of pulse laser radiation modulated by videosignal, in its subsequent synchronous two-coordinate sweep and scanning over screen by dependences U, U=K2•H/K, where Uis output signal (for instance, voltage) of channel of focusing; Uis output signal (for instance, voltage) of channel of brightness. EFFECT: higher efficiency. |
