Descrambling apparatus and television system utilizing the same

摘要

A descrambling apparatus includes a descrambling module and a one-time programmable module. The descrambling module descrambles an input data stream. When the one-time programmable module is in a first status, the descrambling module descrambles the input data stream by a first mode. When the one-time programmable module is in a second status, the descrambling module descrambles the input data stream by a second mode.

主权项

1. A descrambling apparatus, comprising:
a descrambling module configured to descramble an input data stream; and a one-time programmable module that is configured to cause the descrambling module to descramble the input data stream by a first mode when the one-time programmable module is in a first status, and to descramble the input data stream by a second mode when the one-time programmable module is in a second status different from the first status, wherein the first mode employs a plurality of separate keys and the second mode employs a single key, and wherein the descrambling module is configured to receive and store the plurality of keys or the single key after the one-time programmable module is set according to the first status or the second status.