发明名称 |
Digital broadcast receiving device |
摘要 |
<p>A receiving unit 101 repeatedly receives a transport stream, and a specifying unit 102 specifies a purchase state. A restoring unit 103 generates a first audio-digital (AV) signal and interactive data, and an AV reproducing unit 105 generates a second AV signal. A combining unit 106 generates a data-AV combined signal by combining the generated second AV signal and a data signal generated from the interactive data. A data presentation restricting unit 115 outputs the interactive data and a purchase state signal. A control unit 107 receives an operation signal from an inputting unit 110 and outputs it to a data operation restricting unit 116. A data analyzing unit 104 analyzes a presentation element contained in the interactive data and generates video data, which is the data signal. A data judging unit 117 judges whether a currently-presented presentation element is included in the same group as a presentation element that is a link destination of the presented presentation element. When the purchase state is a viewing permitted state, the data operation restricting unit 116 outputs the operation signal. When the purchase state is a preview state or viewing prohibited state and when the above two presentation elements are included in the same group, the operation restricting unit 116 also outputs the operation signal.</p> |
申请公布号 |
EP1117255(A2) |
申请公布日期 |
2001.07.18 |
申请号 |
EP20010300229 |
申请日期 |
2001.01.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YAMAGUCHI, KOICHIRO;TAKAO, NAOYA;KAKIUCHI, TAKASHI |
分类号 |
H04N7/16;H04N7/173;(IPC1-7):H04N7/16 |
主分类号 |
H04N7/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|