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Instead of the original wired IP networks, the mobile networks are used as the return channel in IP-QAM VOD system to take the advantage of their wireless data communication function and full coverage in cities. The mobiles are used as a virtual remoter of STB for demanding video programs and controlling their playing. The function of complex query for programs can be realized based on the mobile's...
A combined scheme of individual encryption and watermarking is presented to protect the copyright of the video programs on the public networks. The video program file is split into two files, one is the key file composed of DCT's DC coefficients in I-frames, and the other is a normal file composed of the rest. Then the watermarked key files are produced by embedding every user's identity into the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.