Broadcast receiving apparatus and control method thereof

广播接收设备及其控制方法

Abstract

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.
本发明提供接收包含多个信道的广播波的广播接收设备及其控制方法。该广播接收设备包括:选择单元,用于从广播波选择信道;判断单元,用于针对选择单元所能选择的全部信道,判断获得单元是否能够获得能够由解密单元使用更新后的第一类型加密密钥来进行解密的加密的第二类型加密密钥;以及更新单元,用于在判断单元针对全部信道均已判断为能够获得的情况下,将存储在存储器中的计算机程序更新为更新后的程序。

Claims

Description

Topics

Download Full PDF Version (Non-Commercial Use)

Patent Citations (0)

    Publication numberPublication dateAssigneeTitle

NO-Patent Citations (0)

    Title

Cited By (4)

    Publication numberPublication dateAssigneeTitle
    GB-2551080-ADecember 06, 2017IbmRuntime instantiation of broadcast encryption schemes
    US-9516000-B2December 06, 2016International Business Machines CorporationRuntime instantiation of broadcast encryption schemes
    US-9860219-B2January 02, 2018International Business Machines CorporationRuntime instantiation of broadcast encryption schemes
    WO-2016157011-A1October 06, 2016International Business Machines Corporation, Ibm United Kingdom Limited, Ibm (China) Investment Company LimitedRuntime instantiation of broadcast encryption schemes