| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that channel setting cannot be performed easily because key operations must be repeated many times at the time of channel presetting. SOLUTION: The receiver is provided with an input signal decryption means 101, an operation judging means 102 for judging an operation on the basis of the information decrypted in the means 101, a receiving channel storage mans 103 for storing a receiving channel, a channel table storage means 104 for storing the contents of channel presetting, a station selection control means 105 for performing selection control on the basis of the information from the means 102, and a channel table control means 107 for changing the means 104 on the basis of the information of the means 102.
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