Pixel modulation apparatus and method thereof

摘要

A pixel modulation apparatus for converting pixel data D composed of N1 bits to a pixel data signal composed of one bit. The pixel data D is input into the apparatus at a pixel period TO. The apparatus includes a first data conversion unit which converts the pixel data D to pixel data D1 expanded to N2 bits (N2>N1) at the period T0, a second data conversion unit which converts the pixel data D1 to pixel data D2 composed of N3/m bits at a period T0/m, a third data conversion unit which inputs n data from among the pixel data D2 and pixel data Dd2 constituting the pixel data D2 before having the period T0/m to execute logical sum operations a predetermined number (equal to or less than n) of times to convert the n data to pixel data D3 composed of N3 bits, including additional data corresponding to the predetermined number, and a fourth data conversion unit which converts the pixel data D3 to the pixel data signal composed of one bit at the period T0/m.