Patent ID: 7633494
Filing Date: 2009-12-15
Classification: G09G,H04L

Abstract:
1. An apparatus for controlling a display state, comprising: an Analog to Digital Converter-Phase Locked Loop (ADC-PLL) that converts a received analog signal into a digital data signal using an internal sampling clock signal and outputting the digital data signal, in response to a first control signal and a second control signal; a digital signal processor that performs scaling, gamma correction, and dithering on the digital data signal in response to a third control signal; an auto control unit that detects the frequency and the phase of the sampling clock signal, the locations and amounts of horizontal and vertical available data included in the digital data signal, and the minimum and maximum gray levels of the horizontal and vertical available data of the digital data signal using the digital data signal; and a controller that outputs the first control signal, the second control signal, and the third control signal using information detected by the auto control unit, wherein the auto control unit comprises: