Patent ID: 7916968

Claim:
An adjusting apparatus for enhancing the contrast of an original image comprising a plurality of pixels, each of the pixels comprising a plurality of sub-pixels, the adjusting apparatus comprising: a mask processor for retrieving a pixel matrix from the original image according to a mask dimension of the mask processor and outputting a specific pixel corresponding to a specific position in the pixel matrix; a brightness detecting unit for comparing a plurality of pixel values of the sub-pixels, so as to output a greatest pixel value served as a brightness base value by the comparison result; a brightness adjusting unit for generating a brightness enhancement value by increasing the brightness base value and comparing the brightness enhancement value with a maximum gray-scale value, so as to output the brightness enhancement value or the maximum gray-scale value based on a result of the comparison; a ratio calculating unit for adjusting the output of the brightness adjusting unit with use of a first threshold value as a base value and performing a division operation on the maximum gray-scale value and the adjusted value outputted by the brightness adjusting unit, so as to obtain an adjusting ratio; and a contrast enhancing unit for adjusting the values of the sub-pixels in the specific pixel with use of a second threshold value as the base value and multiplying the value of the adjusted specific pixel by the adjusting ratio, so as to output the value of the specific pixel processed by a method of enhancing the contrast.