Digital watermarking-based content protection system terminal digital interface
|School||Huazhong University of Science and Technology|
|Course||Applied Computer Technology|
|Keywords||Terminal Interface Digital watermarking Content Protection System Video Encryption|
With the popularity of digital television and the Internet and development , the spread of digital multimedia content becomes more and more convenient, but the corresponding intellectual property protection is relatively slow in recent years, illegal copying of digital TV content and more serious . According to the International Intellectual Property Alliance statistics show that about 90% of piracy is through the terminal interface to decrypt the data , and then copy the decrypted data and record achieved . Given this characteristic , the protection of terminal equipment digital interface output multimedia content to become a priority issue of copyright protection . This integrated digital watermarking and cryptography and other technologies, proposed and implemented a high-definition digital content protection system . High-bandwidth Digital Content Protection (High-Bandwidth Digital Content Protection, HDCP) is home to the relatively common terminal interface protection program , first introduced the main features HDCP technology , and then expounded several major terminal interface protection technology. Mini2440 platform based on the design of a high-definition video transmission interface protection system, which consists of video transmitter , video receiver and the user certificate server three subsystems. Video transmitter designed primarily multi-user connection tube slightly key management , encryption update strategy , video watermarking strategy , real-time video transmission policy ; video receiver designed primarily receive real-time strategy video , video watermark extraction strategy , decryption strategy , real-time video playback policies. User certificate server design to solve the user certificate update problems for content providers to provide a carrier solution. Experimental results show that , Mini2440 platform interface based on digital watermarking technology to protect the security of the system better for high-definition video transmission encryption provides a good service , so that the normal reception of broadcast authentication device , not authentication device can not normal playback, implements the interface protection purposes.