| 摘要 |
A system provides contents as data packet stream, in which each data packet carries at least one address. A first processor is installed with at least one input end used to receive content data packet stream. The processor goes through program design to distribute the data packet of content data packet stream to at least two of several output ends. One output end is connected to the scrambler capable of scrambling data packets. In a system scrambler goes through program design to select few areas in contents with first computation method. The scrambler protects the selected areas from being scrambled during transmission, in which the scrambled contents of the selected area can be processed in accordance with second computation method. There's another system that recovers mixed contents includes a signal generator used to recover the received and store the scrambled contents. The processor goes through program design to scan scrambled contents with second computation method for locating unscrambled area and at least processing those areas. |
