| 摘要 |
A method and apparatus for protecting the broadcast of a digital image sequence from unauthorized access. Specifically, a trusted device is employed by an encoding system for inserting impairments directly into the encoded broadcast stream. Along with the impairments, the instructions for removing the impairments are also inserted into the encoded broadcast stream. In one embodiment, the instructions for removing the impairments are stored in a packet that is uniquely identified. <IMAGE> |
