AUTOMATIC SWITCHING METHOD OF DEMODULATION MODE

摘要

The present invention is to provide a demodulation method auto-switching method that allows it to automatically switch to the demodulation method according to the broadcast signal of the QPSK signal or QAM signal received by the broadcast signal receiving apparatus for receiving a QPSK and QAM broadcast signal, the broadcast signal the receiving device according to the oN or the channel is changed, it is determined that the broadcast signal is received the QPSK signal or a QAM signal in the channel, if the QPSK signal, the QPSK tuner / demodulating portion tuning / demodulation outputs, and QAM If the signal is to be by the QAM tuner / demodulating portion tuning / demodulating the output, without allowing the user to manually change the demodulation method as watching a broadcast of the QPSK and QAM signals.