Patent ID: 8553147
Filing Date: 2013-10-08
Classification: G09G,H04N

Abstract:
1. A display apparatus comprising: a common input terminal configured to input one of a couple of types of input signals consisting of either an analog RGB or a component video signal; a synchronizing signal separation unit configured to separate a synchronizing signal from a video signal entered from the common input terminal; a frequency measurement unit configured to measure a frequency of the synchronizing signal; an input signal discrimination unit configured to discriminate the video signal entered from the common input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit; and a memory configured to store synchronizing signal frequencies corresponding to standards of analog RGB signal and component video signal, wherein the input signal discrimination unit discriminates that the input signal is a component video signal when the synchronizing signal separated by the synchronizing signal separation unit is a sync on green signal and the measurement result obtained by the frequency measurement unit represents the synchronizing signal stored in the memory that corresponds to the standard of component video signal.