Light-emission modulation having effective scheme of creating gray scale on image

摘要

A clock generating part (11) generates a high-frequency clock signal having a frequency higher than that of a pixel clock frequency; a serial modulation signal generating part (13) generates a serial modulation signal having a serial pulse sequence based on the high-frequency clock signal, and, light emission is modulated according to the serial modulation signal, and, thus, each pixel of an image is formed according to the pixel clock frequency. <IMAGE>