Image Dithering Device Processing in both Time Domain and Space Domain

摘要

PURPOSE: An image dithering apparatus processed in a time domain and a space domain is provided, which strengthens a gamma table to improve an image resolution using a dithering technology assembling the time domain and the space domain. CONSTITUTION: The apparatus comprises a gamma table(31) operating gamma processed as an input signal. A counter module(33) calculates a row count value and a column count value by counting a vertical synchronizing signal, a horizontal synchronizing signal and an image pixel clock of an LCD image control system. A dithering value generating module provides a dithering value as to each pixel according to the row count value and the column count value, and includes matrixes having different values respectively. A calculation module(32) calculates the dithering value reducing bits of an output value from the gamma table and an input image value.