Image Dithering Device Processing in both Time Domain and Space Domain

摘要

TECHNICAL FIELD The present invention relates to an image dithering device processed in the time domain and spatial domain to improve the picture degree of an LCD digital display. The apparatus includes a gamma table for operating a gamma processed into an input signal; Counter module for counting vertical synchronizing signal, horizontal synchronizing signal and image pixel clock of LCD image control system to calculate row count and column count value ; A dithering value generating module that provides a dithering value for each pixel according to the row coefficient value and the column coefficient value and includes a matrix having different values; And a calculation module for measuring a dithering value for reducing the bits of the input image value and the value output from the gamma table to fit the input data of the LCD display. Since low bit data can be expressed in terms of time domain, the image quality and color of the LCD digital display can be improved.