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US 4,363,053 AGranted
Signal reproducing circuit
AssigneeSony Corporation
InventorsYoshitaka Kanamoto, Makoto Ishiodori
Life of this patent
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Abstract
An improved high boost circuit for a reproduced frequency modulated video signal is disclosed, wherein the third harmonic components of the reproduced f.m. video signal is suppressed, so that the undesired so-called over-modulating effect causing signal inversion is avoided at the boundary of different video signal levels.
Claims5
Signal reproducing circuit for an angular modulated signal, comprising:
- (a) a delay means for receiving and delaying an incoming angular modulated signal by predetermined times .tau., and 2.tau.;
- (b) a mixing means for mixing said incoming angular modulated signal and said 2.tau.-delayed angular modulated signal;
- (c) a signal limiter means receiving the output of said mixing means and limiting the amplitude of signals derived from said mixing means;
- and
- (d) an adding means receiving the outputs of said delay means and said signal limiter means and adding in said opposite polarity the signals from said signal limiter means and .tau.-delayed angular modulated signal, whereby an equalized angular modulated signal is derived from said adding means.
2 more elements
Dependencies are inferred from the claim text.