Patent ID: 6188438
Filing Date: 2001-02-13
Classification: H04N

Abstract:
A receiving apparatus for receiving a transmitted signal with a transmitting source identifying code added thereto at a transmission end of a transmission line as a received signal, comprising:transmitting source identifying code extracting means for extracting said transmitting source identifying code indicative of an address of a transmitting source from said received signal prior to output of said received signal at said transmission end of said receiving line;transmitting source identifying code change detecting means for detecting a change of said transmitting source identifying code extracted from said received signal by said transmitting source identifying code extracting means by comparing said extracted transmitting source identifying code with a previously extracted transmitting source identifying code; andtransmitted signal switching detecting means for detecting a switching of said transmitted signal based on said transmitting source identifying code whose change was detected by said transmitting source identifying code detecting means.