| 摘要 |
PROBLEM TO BE SOLVED: To prevent a program having been selected early from being suddenly interrupted by comparing transmission channels of programs selected before and after and displaying a warning message when they are different. SOLUTION: Program information and transmission information are received simultaneously with video audio information and stored in a RAM 5. When a view instruction is made for a specific program from a user, a control section 10 decides a transmission channel from transmission information and gives an instruction to a tuner 2 for viewing. In this case, the control section 10 stores the selected number to a number memory 11. In this state, when a 2nd program instruction is made by an instruction section 9, the control section 10 reads a program number stored in the memory 11 and compares and decides the channel during reception from the transmission information in the RAM 5 and a transmission channel of a 2nd selection program, As a result, when they are equal, the reception instruction of a 2nd program is made to a separator section 4. When different, a warning message is outputted to an OSD section 7 and a synthesis section 8 synthesizes the message with the video signal and displays the synthesized signal. When a continue instruction is made, the reception frequency of the 2nd program is read out of the RAM 5 to switch the reception channel.
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