Patent ID: 9647997
Date: 2017-05-09
CPC Classifications: H04L,H04N

Claim:
1. A removable security device for performing a method comprising: receiving a first network encrypted elementary stream, wherein the first network encrypted elementary stream is received in a format in accordance with a first clock recovery mechanism; receiving a second network encrypted elementary stream, wherein the second network encrypted elementary stream is received in a format in accordance with the first clock recovery mechanism; decrypting the first and second network encrypted elementary streams using at least one network control word to generate first and second clear content streams, wherein decrypting the first and second network encrypted elementary streams is based at least in part on the first clock recovery mechanism; obtaining at least one local control word; encrypting the first and second clear content streams to produce first and second locally encrypted content streams, wherein the first and second locally encrypted content streams are generated using the at least one local control word; multiplexing the first and second locally encrypted content streams into an output stream; providing, to a video processing device, the output stream, wherein the output stream is provided in accordance with the first clock recovery mechanism.