| 摘要 |
<p>When program data is downloaded through a broadcast wave, the program is prevented from being kept incomplete due to degradation of a reception state. When new program information is detected, a C/N value is observed. It is determined whether the observed C/N value is a specified value or more. If the C/N value is the specified value or more, a program for download control is executed. It is determined whether the download process is ended. The download process is executed until the download process is ended. Since the download process is executed after it is confirmed that the C/N is preferable, a risk that the downloading is interrupted due to degradation of the reception state in the middle of the download process can be avoided. <IMAGE></p> |
