| 摘要 |
PROBLEM TO BE SOLVED: To allow the CATV converter itself to inform it to the user that a broadcast wave is stepped at the time of serrice interruption. SOLUTION: Upon the receipt of control data from a broadcast center 50 by the CATV converter 20, when the data indicate broadcast wave stop notice data to predict the stop of the broadcast wave, '1' is stored in a broadcast wave stop notice storage section 22b. When a video signal of a channel selected by a channel selection circuit 26 is not obtained, whether or not the broadcast wave is stopped is discriminated and when the discrimination results in the stopped broadcast wave, a broadcast wave stop notice LED 25 goes off. |
