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    • 8. 发明授权
    • Broadcast receiving apparatus and control method thereof
    • 广播接收装置及其控制方法
    • US09036819B2
    • 2015-05-19
    • US12499355
    • 2009-07-08
    • Yoshihiro Saga
    • Yoshihiro Saga
    • H04N7/167H04H60/23H04H20/91
    • H04H60/23H04H20/91
    • The present invention provides a broadcast receiving apparatus that receives a broadcast wave containing multiple channels. The apparatus comprises, among other things, a selecting unit that selects a channel from the broadcast wave; a determination unit that determines, for all channels that can be selected by the selecting unit, whether or not the obtaining unit can obtain an encrypted second-type encryption key that can be decrypted by the decrypting unit using the updated first-type encryption key; and an updating unit that updates the computer program stored in the memory to the updated program in the case where the determination unit has determined that the obtainment is possible for all the channels.
    • 本发明提供一种接收包含多个信道的广播波的广播接收装置。 该装置尤其包括从广播波中选择频道的选择单元; 确定单元,对于可由选择单元选择的所有通道,确定获取单元是否可以获得可由解密单元使用更新的第一类型加密密钥解密的加密的第二类型加密密钥; 以及更新单元,其在所述确定单元已经确定所有所述通道可获得的情况下,将存储在所述存储器中的所述计算机程序更新为所述更新程序。