Signal demodulating apparatus capable of effectively suppressing the beat interference caused by the pilot signal

A signal demodulating apparatus for demodulating frequency-modulated video signals on which pilot signals are mixed, comprising:

• input means for receiving the pilot signal-mixed frequency-modulated video signals;
• first deriving means connected to said input means for deriving a first pilot signal from said pilot signal-mixed frequency-modulated video signals;
• pilot canceling signal generating means connected to said first deriving means for generating a pilot canceling signal;
• mixing means connected to said input means and said pilot canceling signal generating means for mixing said pilot signal-mixed frequency-modulated video signals and said pilot canceling signal;
• limiting means connected to said mixing means for limiting the pilot canceled frequency-modulated video signals to a predetermined level;
• demodulating means connected to said limiting means for demodulating said frequency-modulated video signals;
• and
• second deriving means connected between said limiting means and said demodulating means for deriving a second pilot signal from said pilot canceled frequency-modulated video signal, said second pilot signal being supplied to said pilot canceling signal generating means, wherein said pilot canceling signal generating means generates said pilot canceling signal based on said first and second derived pilot signals.