| 摘要 |
PURPOSE: To mainly use a device for a radio broadcast receiver, to easily make a broadcast reception contract and to make the contracts with many companies by a receiver. CONSTITUTION: After a video signal and the present data are mixed on the side of a broadcast station, the mixed one is transmitted. On the side of a reception, the signal is separated and the signal is separated into the video signal and the present data. As a result of the comparison processing calculation of the dated data obtained from a card 10 on which a reception term of validity is record and the present date data obtained from the separator after the reception, an output video signal is made to output of the term is the term of validity. |
