| 摘要 |
The aspect change of images accompanying a channel change has not been made quickly. TV 110 extracts aspect ratio information about each program of each channel which is overlapped on digital television set broadcasting signals from digital television set broadcasting signals periodically, and records the same to a recording medium 50. On the other hand, when the instruction of change of the channel is input from outside, the TN 110 immediately reads out the aspect ratio information corresponding to the program of the channel of the change destination by the instruction concerned from the recording medium 50, and the TV 110 notifies the same to a microcomputer 90 which controls a scaler 80. Accordingly, in comparison with the prior art, it is possible to greatly shorten the time required to notify the aspect ratio information to the scaler 80.
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