Patent ID: 8111334
Filing Date: 2012-02-07
Classification: H04N

Abstract:
1. A signal switching apparatus comprising: a video reference input block in which video references having a plurality of types are entered; a plurality of synchronous signal generating blocks configured to generate a synchronous signal from each of said video references having a plurality of types entered from said video reference input block; a plurality of video signal input blocks in which a video signal having a video format corresponding to each of said video references having a plurality of types is entered; a signal processing block configured to execute signal processing on said video signal in synchronization with a synchronous signal generated by one of said plurality of synchronous signal generating blocks; a video signal output processing block configured to output said video signal in synchronization with a synchronous signal generated by one of said plurality of synchronous signal generating block; a switching block configured to switch between supply destinations in which said signal processing block and said video signal output processing block to which a video signal entered in each of said plurality of video signal input blocks and a video signal subjected to signal processing by said signal processing block are supplied in synchronization with each of synchronous signals generated by said plurality of synchronous signal generating blocks; and a control block configured to control a connection relationships that are switched by said switching block; wherein, in synchronization with a synchronous signal generated from a video reference corresponding to a format of a video signal to be supplied to said signal processing block via said switching block, said control block controls said signal processing block to execute signal processing on said video signal and, in synchronization with a synchronous signal generated from a video reference corresponding to a format of a video signal to be supplied to said video signal output processing block via said switching block, controls said video signal output processing block to output said video signal.