Broadcasting receiving apparatus and broadcasting receiving method

Abstract

A broadcasting receiving apparatus includes a tuner to receive a broadcasting signal and output a reception signal selected therefrom, a demodulation portion to output a video audio signal by demodulating the reception signal from the tuner, an encryption portion to output an encrypted video audio signal by encrypting the video audio signal, a buffer portion to store one of the video audio signal from the demodulation portion and the encrypted video audio signal from the encryption portion, and a control portion to perform control in such a manner that, when the video audio signal needs to be encrypted in the encryption portion, the video audio signal is transferred in the form of first files each having a first capacity (m [KByte]), encrypted on a file-by-file basis in the encryption portion, and stored into a memory region in the buffer portion successively in units of the first capacity, and when the video audio signal need not be encrypted in the encryption portion, the video audio signal is transferred in the form of plural second files each having a second capacity (n [KByte], (m>n)) smaller than the first capacity on a file-by-file basis, and stored into the memory region in the buffer portion successively in units of the second capacity. It is thus possible to provide a receiving apparatus capable of preventing unauthorized copying of a video audio signal committed by tampering with flag information indicating the need for encryption.

Dependencies are inferred from the claim text.