A data processing system includes: a stream decoder for decrypting a stream encrypted by broadcast encryption to obtain a first decrypted stream; an internal buffer for storing the first decrypted stream; and an encryption/decryption processor. The encryption/decryption processor decrypts a stream encrypted...http://www.google.com.mx/patents/US7889864?utm_source=gb-gplus-sharePatent US7889864 - Data processing system and method
