Patent ID: 6219443
Filing Date: 2001-04-17
Classification: G02F,G06T,G09G,H04N,Y10S

Abstract:
A display inspection system for inspecting a display, the display comprising a plurality of pixels, the inspection system comprising:an optical detection device disposed to capture an image of a display being inspected, the optical detection device outputting electrical signals representing the image captured by the optical detection device, each electrical signal corresponding to a pixel of the optical detection device; andprocessing circuitry for receiving the electrical signals output from the optical detection device, the processing circuitry averaging the electrical signals to obtain an average display value, the average display value corresponding to an average of the light intensity of the display, the processing circuitry averaging the electrical signals corresponding to blocks of pixels of the optical detection device to obtain average block values, the processing circuitry comparing each of the average block values with the average display value to obtain a comparison value, wherein if one of the comparison values is not approximately equal to a predetermined threshold value, the processing circuitry determines that the display being inspected fails the inspection.