Digital broadcast receiving device

Details Digital broadcast receiving device Digital broadcast receiving device

2006-12-05

2006-12-05

Bui, Kieu-Oanh (Department: 2611)

Interactive video distribution systems

Video distribution system with upstream communication

Receiver

C725S080000, C725S082000, C725S091000, C725S092000, C725S114000, C725S115000

Reexamination Certificate

active

07146633

ABSTRACT:
A receiving unit101repeatedly receives a transport stream, and a specifying unit102specifies a purchase state. A restoring unit103generates a first audio-digital (AV) signal and interactive data, and an AV reproducing unit105generates 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 unit115outputs the interactive data and a purchase state signal. A control unit107receives an operation signal from an inputting unit110and outputs it to a data operation restricting unit116.A data analyzing unit104analyzes a presentation element contained in the interactive data and generates video data, which is the data signal. A data judging unit117judges 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 unit116outputs 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 unit116also outputs the operation signal.

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