| 摘要 |
PURPOSE: A device and method for compensating for a clock phase of a monitor are provided so that a screen can be normally displayed by compensating for distortion of the clock phase due to environmental factors of the monitor. CONSTITUTION: A phase locked loop(30) generates a clock pulse. According to the clock pulse from the phase locked loop(30), an A/D converter(40) samples RGB image signals from a main body, and converts the sampled signals into digital image signals. An EEPROM(20) stores reference values of the digital image data from the A/D converter(40). A microcomputer(10) receives the digital image data from the A/D converter(40), compares the digital image data with the reference digital image data stored in the EEPROM(20), and controls the phase locked loop(30) when an error is generated. A scaler(50) adjusts magnitude of the digital RGB signals from the A/D converter(40) in frame units according to the control signal from the microcomputer(10). A frame buffer memory(60) stores the output from the scaler(50). An LCD module(70) displays the image signal stored in the frame buffer memory(50) by adjustment of the scaler(50). Accordingly, it is possible to compensate for distortion of the clock phase due to environmental factors of the monitor, thereby normally displaying the screen.
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