Patent ID: 7792299
Filing Date: 2010-09-07
Classification: H04H,H04N

Abstract:
1. A digital-broadcasting receiving apparatus comprising: a scanning member to scan a broadcast data of a sub-channel included in a broadcast data of a physical channel which is transmitted by a digital-broadcasting wave; a scramble judgment member to judge whether the broadcast data is scrambled or not by referring individually to one of a scramble judgment data, which is included in the broadcast data of the sub-channel scanned by the scanning member, of a transport scrambling control bit included in a header region of the video data of the sub-channel, a descriptor tag in the program map table and a packetized elementary stream scrambling control in the video/audio of the sub-channel; a decode judgment member to judge whether the broadcast data of the sub-channel is scrambled or not by judging whether the broadcast data can be decoded or not; a first registration member to register the sub-channel as a viewable channel when the decode judgment member judges that the broadcast data can be decoded; a second registration member to register the sub-channel as a viewable channel when the scramble judgment member judges that the broadcast data is not scrambled; a judgment member to judge whether the judgment obtained by the scramble judgment member referring to one of a plural kinds of scramble judgment data accords with the judgment obtained by the decode judgment member; and a channel registration control member to allow the first registration member to register the sub-channel when the judgment member judges that the judgment obtained by the scramble judgment member does not accord with the judgment obtained by the decode judgment member in all kinds of the scramble judgment data, and to allow the second registration member to register the sub-channel with referring to the one of the plural kinds of scramble judgment data when the judgment member judges that the judgment obtained by the scramble judgment member referring to the one scramble judgment data accords with the judgment obtained by the decode judgment member.