Buffalo Inc.

Yoshiyuki Takagi

Ryosuke Takahashi

Yoshikazu Yamagishi

Yutaka Maruyama

The digital broadcast receiverincludes the first tunerand the second tuner. The first tunerreceives a certain channel, whereas the second tunerperforms channel detection at a predetermined cycle. If the reception level of the certain channel currently received by the first tunerbecomes lower than a threshold, the digital broadcast receiverswitches the channel received by the first tunerto a channel whose reception level is equal to or higher than the threshold among channels detected by the second tuner

Digital broadcast receiver and method for receiving digital broadcast

A method is provided of playing a broadcast program content, which includes: (a) producing a combination-dependent unique key which is unique to a combination of a tuner unit and a computer unit; and (b) in response to issuance of a real-time play command or a recorded-video playback command from a user, playing a broadcast program content in real-time after transmission thereof from the tuner unit to the computer unit, or playing back recorded data after retrieval thereof from a data storage. In an illustrative embodiment, the produced combination-dependent unique key is outputted into an encryptor of the tuner unit for encryption, and the encrypted digital data is inputted into the computer unit. A decryptor of the computer unit is caused to attempt decryption of the encrypted digital data, using the produced combination-dependent unique key.

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Nagoya, Japan

Yoshiyuki Takagi