Patent ID: 7315622

Claim:
A receiver for receiving an MPEG encrypted transport stream and outputting audio and video signals, comprising: a decryptor adapted to receive the encrypted transport stream, to decrypt the encrypted transport stream and to output a decrypted transport stream; a de-multiplexer adapted to receive the decrypted transport stream, adapted to convert the decrypted transport stream to an audio elementary stream and a video elementary stream and adapted to change values in presentation time stamp and decoding time stamp fields of each header of each packet of the audio elementary stream and of the video elementary stream to match time of a receiver record clock and adapted to output the audio elementary stream and the video elementary stream; a storage sub-system adapted to receive and store the audio elementary stream and the video elementary stream, adapted to change the values in the presentation time stamp and decoding time stamp fields of each header of each packet of the audio elementary stream and of the video elementary stream to compensate for an amount of time the audio elementary stream and of the video elementary stream are stored in the storage sub-system determined based on internal receiver times; an audio decoder adapted to receive and to decode the audio elementary stream and adapted to output an audio signal; and a video decoder adapted to receive and to decode the video elementary stream and adapted to output a video signal.