公开(公告)号：WO2004004330A3

公开(公告)日：2004-03-11

申请号：PCT/IB0302660

申请日：2003-06-05

Applicant: KONINKL PHILIPS ELECTRONICS NV ,  PHILIPS CORP

Inventor： MANI MURALI ,  MEENAKSHISUNDARAM RAMANATHAN ,  WESTER ROGATUS H H ,  VAN DER SCHAAR AUKE

IPC: H04N5/44 ,  H04N5/91 ,  H04N5/92 ,  H04N7/173 ,  H04N7/26 ,  H04N7/52 ,  H04N7/62 ,  H04N7/24

CPC classification number: H04N21/4147 ,  H04N21/42661 ,  H04N21/4305 ,  H04N21/4307 ,  H04N21/4325 ,  H04N21/4343 ,  H04N21/4385 ,  H04N21/43853

Abstract: A receiver for receiving an MPEG encrypted transport stream and outputting audio and video signals comprising: a decryptor adapted to receive and decrypt the encrypted transport stream; a de-multiplexer adapted to convert the decrypted transport stream to audio and video elementary streams and to change the values in presentation time stamp and decoding time stamp fields of each packet of the audio and elementary streams to match the time of a receiver record clock; a storage sub-system adapted to store the audio and the video elementary streams and to change the values in the presentation time stamp and decoding time stamp fields of each header of the audio and video elementary streams to compensate for the amount of time the audio and video elementary streams are stored; and audio and video decoders to decode the audio and video elementary streams respectively.

Abstract translation: 一种用于接收MPEG加密传输流并输出音频和视频信号的接收器，包括：适于接收和解密所述加密传输流的解密器; 解复用器，适用于将解密后的传输流转换为音频和视频基本流，并且改变音频和基本流的每个分组的呈现时间戳和解码时间戳字段中的值以匹配接收器记录时钟的时间; 存储子系统，其适于存储音频和视频基本流并且改变音频和视频基本流的每个头部的呈现时间戳和解码时间戳字段中的值以补偿音频和视频基本流的时间量 视频基本流被存储; 以及音频和视频解码器分别解码音频和视频基本流。