System for transmitting the scrambled broadcast-signals in single frequency network, and a method thereof
US8619987B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 4, 2005 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Mar 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a system for transmitting encrypted broadcast signals to different transmitters on a single frequency network (SFN) in a digital broadcasting system. The system for transmitting encrypted broadcast signals on the SFN includes: a main broadcasting system for transmitting encrypted broadcast signals including data streams and transmitter identification information (TII) through a main broadcasting network; a repeating system for amplifying encrypted broadcast signals of the main broadcasting network and transmitting the amplified broadcast signals, or modulating and amplifying streams input by the main broadcasting system through a private line and repeating broadcast signals of the main broadcasting system through a repeating network; and a decrypting key provider for receiving a decrypting key value from the main broadcasting or repeating system and transmitting a user authentication and decrypting key to a charged subscriber terminal through a mobile communication network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.