Mills & Onello LLP
Sync processor of flat panel display for determining signal safety on the basis of HSYNC/VSYNC signal generated according to data enable signal
In a sync processor for determining safety of signals on the basis of a horizontal/vertical sync signal generated according to a data enable signal, the sync processor includes a digital horizontal/vertical signal generator, a selector, a digital horizontal/vertical signal detector, a horizontal/vertical polarity determination unit, and a horizontal/vertical frequency determination unit. The digital horizontal/vertical signal generator generates a digital horizontal/vertical sync signal from the data enable signal. The digital horizontal/vertical signal detector detects a signal received from the selector and generates a digital horizontal/vertical signal. The horizontal/vertical polarity determination unit counts the number of low and high durations of a horizontal/vertical sync signal and generates a horizontal/vertical polarity signal in response. The horizontal/vertical frequency determination unit counts the number of cycles of the clock signal occurring in low and high durations of a digital horizontal/vertical polarity signal and generates a horizontal/vertical frequency signal in response.
Samsung Electronics Co., Ltd.
H G
H04N G09G
inventional inventional
Yong-joon
Jung