Digital TV encryption and authorization system and method based on IP stream |
Title： |
| Digital TV encryption and authorization system and method based on IP stream |
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Application Number： |
200710073569 |
Application Date： |
2007/03/12 |
Announcement Date： |
2007/12/12 |
Pub. Date： |
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Publication Number： |
101087402 |
Announcement Number： |
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Grant Date： |
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Granted Pub. Date： |
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ApplicationType： |
Invention |
State/Country： |
94[] |
IPC： |
H04N 7/167H04N 7/16H04L 29/06 |
Applicant(s)： |
Research Institute of Tsinghua University in Shenzhen |
Inventor(s)： |
Hou Weibing, He Tianyi, Zhu Yongliang, Feng Guanping |
Key Words： |
Digital TV, encryption, authorization, IP stream |
Abstract： |
A kind of digital TV encrypting authorization system and method which is based on IP flow relates to network of digital TV and data communication system, especially data encrypting system and method. The system includes encrypting front end, transmission network and receiving terminal. The encrypting front end generates authorization control table data, and program source is encrypted, encapsulated to IP data flow. The receiving terminal receives the program, analyzes corresponding program based on received authorization management information. The invention provides a kind of effective scheme; it fits for transmitting data in various types, but multiple points broadcast mode is more effective than point-to-point broadcast mode. For in aspect of encrypted broadcast and user addressing, the scheme is more effective than IPSec that key management and authorization. Mobile communication technique is fused as digital broadcast TV technique; the problem that two-way transmission can not be realized in current data transmission mode through the cost is low can be resolved. |
Claim： |
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Priority： |
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PCT： |
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LegalStatus： |
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