Digital broadcast system and its component devices that provide services in accordance with a broadcast watched by viewers
US7194758B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/33
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital broadcast system includes a receiving device, one or more communication devices, and a broadcast station device. The receiving device includes a receiver for receiving a digitally broadcast program; a presentor for presenting the program received by the receiver to a viewer; and means for sending program ID information that specifies either the presented program or a program related to the presented program. Each of the communication devices receives the sent program ID information and sends communication device ID information to the broadcast station device together with the received program ID information. The broadcast station device receives the program ID information and the device ID information, and sends viewer targeted program specific service information to each of the communication devices identified by the received device ID information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.