| 摘要 |
A signal demodulating apparatus for demodulating FM video signals on which a pilot signal is mixed. The apparatus comprises an input circuit, a first deriving circuit, a pilot canceling signal generating circuit, a mixing circuit, a limiter and a demodulator. The input circuit admits the pilot signal-mixed frequency-modulated video signals. The first deriving circuit connected to the input circuit derives the pilot signal from the pilot signal-mixed frequency-modulated video signals. The pilot canceling signal generating circuit connected to the first deriving circuit generates a pilot canceling signal based on the derived pilot signal. The mixing circuit connected to the input circuit and the pilot canceling signal generating circuit mixes the pilot signal-mixed frequency-modulated video signals and the pilot canceling signal. The limiter connected to the mixing circuit limits the pilot-canceled frequency-modulated video signals to a predetermined level. The demodulator connected to the limiter demodulates the frequency-modulated video signals.
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