抄録
This paper dercribes the frame pulse protection system. In conventional MUSE decoders, the number of frame pulse protection is six This is one of the reasons that the picture is dameged when up-link stations are switched. According to the results of experiments studying the relationship between the reception CN ratio and the frame pulse not possible to be detected, it has been proved that is a normal situation (CN ratio is more than 17 dB), the sufficient protection number is zero. Consequently, if the protection is controlled so that it will match the reception CN ratio, picture damage when switching can be reduced.
