| 摘要 |
In a television signal processing system, broadband means responsive to television video signals are provided to derive a relatively broadband signal including signal components in a frequency range between zero Hertz and a frequency f. Narrowband means also responsive to the television video signals are provided to derive a relatively narrowband signal having a peak amplitude response at a frequency between zero Hertz and approximately f and a relatively lower response at frequencies of zero Hertz and approximately f. Thresholding means responsive to the narrowband signal are provided to inhibit translation of signal portions of the narrowband signal above a predetermined threshold. The amplitude inhibited narrowband signal is combined with the broadband signal to provide an output signal having relatively accentuated high frequency components and relatively suppressed noise components.
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