Secam system magnetic recording/reproducing device
专利汇可以提供Secam system magnetic recording/reproducing device专利检索，专利查询，专利分析的服务。并且PURPOSE: To prevent the signal such as a luminance signal or a subcarrier wave from being damaged by a noise by muting the output of a limiter amplifier when a carrier chrominance signal and a vertical identify signal do not exist.
CONSTITUTION: A composite video signal is inputted to a band-pass filter means 42, and a carrier chrominance signal separated by this filter is inputted to a limiter amplification circuit 46 and a decision circuit 47 through a reverse bell circuit 44. The decision circuit 47 decides the presence of the carrier chrominance signal and the vertical identify signal at every time, and it opens or closes a switching means 49 according to its decision signal. Thus, the carrier chrominance signal passed from the limiter amplification circuit 46 through a time base correction circuit 50 for matching timing is muted in a section where the amplified noise exists. The carrier chrominance signal, from which the noise was removed, is frequency divided by a 1/4 step-down circuit 52, and is transmitted through a low-pass filter 53 and a recording equalizer circuit 55.
COPYRIGHT: (C)1989,JPO&Japio，下面是Secam system magnetic recording/reproducing device专利的具体信息内容。
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