Content transmission security protection device system and method
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United States of America Patent
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Nov 18, 2014
Issued Date -
N/A
app pub date -
Nov 26, 2009
filing date -
Jul 16, 2009
priority date (Note) -
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Abstract
The invention relates to information security technologies, provides a content security transmission device and a content security transmission system which separate data transmission function of a digital interface from data management and processing function thereof, and provides a content security transmission method based on the device and the system. The content security transmission protection device comprises digital interfaces and a management/processing unit, the management/processing unit is configured in a specific chip in the device, used for updating a revocation list stored therein and collecting information from downstream devices. A transmitting device and a forwarding device in the content security transmission protection system comprise digital interfaces and management/processing units. The invention employs software in the specific chip CPU to implement data management and processing function without increasing cost, thus being capable of increasing any functions, improving flexibility and expansibility of the system, and greatly reducing size and cost of digital interface chips, namely reducing the development difficulty. The digital interfaces only implement simple data transmission function at fast processing speed.
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