G - Physics – 01 – R
Patent
G - Physics
01
R
375/4
G01R 31/28 (2006.01) G09G 3/00 (2006.01)
Patent
CA 1273135
ABSTRACT OF THE DISCLOSURE An apparatus designed for detecting the position of a faulty light emitting element and installed in a large screen display system which is equipped with a large screen consisting of multiple light emitting elements such as cathode-ray tubes or electric bulbs arrayed vertically and horizontally in columns and rows to display desired still images, characters or motion images, and also with a character processor and motion image processor as control means. The apparatus comprises an input means for receiving a drive command to turn on or off an arbi- trary group of light emitting elements out of those constituting the large screen; a display means for dis- playing the content of the command fed to the input means; a character processor for converting the content of the command into a signal and outputting the signal to a motion image processor; and the motion image processor for writing the output signal of the character processor in and reading it out from an incorporated memory, thereby continuously processing the position data designated by the input means relative to the element group to be turned on or off. Detecting the position of any faulty light emitting element can be achieved by adjusting the faulty element to attain positional coincidence with the element group to be turned on or off.
517108
Sato Yasuhiro
Tsuji Katsuya
Kirby Eades Gale Baker
Mitsubishi Denki Kabushiki Kaisha
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