Patent ID: 6181318
Filing Date: 2001-01-30
Classification: G06T,G09G

Abstract:
An apparatus for converting resolution of an image for display on a liquid crystal display monitor, comprising:a computer for outputting an image signal as R, G and B color signals to be displayed on a screen of a liquid crystal display monitor and simultaneously outputting a horizontal synchronous signal and a vertical synchronous signal;a signal amplifying and adjusting unit for generating an amplified image signal by amplifying a level of the image signal output from the computer;a clamp for generating an analog brightness adjusted image signal by adjusting a brightness of the amplified image signal in accordance with a brightness control signal to vary its level;an analog-to-digital converter for outputting a digital image signal by converting the analog brightness adjusted image signal provided from the clamp;a microcomputer for detecting the horizontal and vertical synchronous signals provided from the computer, detecting a graphic display mode by using a frequency of the horizontal synchronous signal and a frequency of the vertical synchronous signal and recognizing a resolution if said image signal in accordance with the detected graphic display mode; anda graphic controller for discrete-cosine transforming and inverse discrete-cosine transforming the frequency of the digital image signal output from the analog-to-digital converter in order to convert the resolution recognized by the microcomputer to a resolution of said liquid crystal display monitor.