| 摘要 |
a delay unit(16) for outputting Pb and Pc by delaying Pa; a median filter(11) and a low band pass filter(12) for removing a spike noise and a white noise from Pa, Pb and Pc; a spike noise detector(13) and a transition band detector(14) for detecting the spike noise and a transition band by comparing and operating the output from the filter with Pb; and an output selecting unit(15) for outputting a signal by selecting a composite video signal or a filter output so as to remove only spike and white noises from the signal.
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