Patent ID: 8036512
Filing Date: 2011-10-11
Classification: H04N

Abstract:
1. A digital signal receiving apparatus that receives a digital signal, comprising: a signal receiver that receives said digital signal, to output a horizontal synchronizing signal having horizontal synchronizing pulses, a vertical synchronizing signal, a luminance signal, a multiplex color difference signal having first and second color difference signals multiplexed therein, and an effective video signal representing an effective video period from said digital signal; a video format detector that detects the video format of said digital signal received by said signal receiver; a color difference processor that sequentially recognizes the value of said multiplex color difference signal outputted from said signal receiver in a predetermined order corresponding to said video format detected by said video format detector as the respective values of the first and second color difference signals in response to the horizontal synchronizing pulses of the horizontal synchronizing signal outputted from said signal receiver; a recognition determination unit that determines whether or not the value of said multiplex color difference signal outputted from said signal receiver conforms to said order, to determine whether the result of the recognition by said color difference processor is proper or improper; and a recognition reversing unit that reverses the results of the recognition by said color difference processor when said recognition determination unit determines that the result of the recognition by said color difference processor is improper.