Patent ID: 9569990
Date: 2017-02-14
CPC Classifications: G09G

Claim:
1. A system for controlling a smart LED display board capable of compensating for luminance of an LED, comprising: a luminance measurement unit measuring luminance of each of LEDs of the display board and creating a first luminance measurement data obtained by digitizing the measured luminance of each of the LEDs; an image data input unit implemented by a processor, the image data input unit receives a first input data about a lighting-on time, a lighting-off time, a power value supplied when lighting on and a luminance value when lighting on with regard to each of the LEDs; a comparison unit implemented by a processor, the comparison unit receives the first luminance measurement data from the luminance measuring unit, selects, based on the first luminance measurement data, at least one first LED having a luminance value greater than a preset reference luminance value among the LEDs that have been digitized in luminance values, and creates a compensation power value compensating for the luminance value of the selected first LED so that the luminance value of the first LED corresponds to an average value of luminance values of second LEDs that are remaining LEDs other than the first LED; an image data compensation unit implemented by a processor, the image data compensation unit receives the first input data from the image data input unit and the compensation power value from the comparison unit, and creates second input data in which a power value to be supplied when lighting on that is contained in the first input data transmitted to the first LED is changed into the compensation power value; and a drive unit implemented by a processor, the drive unit receives the second input data from the image data compensation unit, transmits the second input data to the first LED, the luminance measurement unit measuring luminance of each of LED dots which are light emitting units included in each of the LEDs, and further creates second luminance measurement data obtained by digitizing the measured luminance of each of the LED dots, wherein the image data input unit further receives a third input data about a lighting-on time, a lighting-off time, a power value supplied when lighting on and a luminance value when lighting on with regard to each of the LED dots, the comparison unit receives the second luminance measurement data from the luminance measuring unit and selecting, from the second luminance measurement data, at least one first LED dot having a luminance value greater than a preset reference luminance value among the LED dots that have been digitized in luminance values, and further creates a compensation power value compensating for the luminance value of the selected first LED dot so that the luminance value of the first LED dot corresponds to an average value of luminance values of second LED dots that are remaining LED dots other than the first LED dot, the image data compensation unit receives the third input data from the image data input unit, receives the compensation power value from the comparison unit, and further creates fourth input data in which a power value supplied when lighting on that is contained in the third input data transmitted to the first LED dot is changed into the compensation power value, and the drive unit receives the fourth input data transmitted from the image data compensation unit and further transmitting the fourth input data to the first LED dot.