公开(公告)号：US20030076856A1

公开(公告)日：2003-04-24

申请号：US10167242

申请日：2002-06-11

Applicant: STMicroelectronics Limited

Inventor： Rodrigo Cordero ,  Patrice Woodward

IPC: H04J003/16

CPC classification number: H04N21/42615 ,  H04N21/426 ,  H04N21/434 ,  H04N21/4341 ,  H04N21/4345

Abstract: A receiver for receiving a data stream comprises a filtering arrangement for filtering said received data stream and a processor. The filtering arrangement is arranged to load at least a part of said data stream, to filter at least part of said data stream and to read at least part of said data stream. The filtering arrangement has a first mode in which said steps are carried out and a second mode in which said processor is arranged to interrupt the steps carried out by said filtering arrangement.

Abstract translation: 用于接收数据流的接收机包括用于过滤所述接收的数据流的过滤装置和处理器。 滤波装置被布置为加载所述数据流的至少一部分，以过滤所述数据流的至少一部分并读取所述数据流的至少一部分。 滤波装置具有执行所述步骤的第一模式和其中所述处理器被布置为中断由所述滤波装置执行的步骤的第二模式。

公开(公告)号：US20040156507A1

公开(公告)日：2004-08-12

申请号：US10705782

申请日：2003-11-10

Applicant: STMicroelectronics Limited

Inventor： Andrew Dellow ,  Rodrigo Cordero

IPC: H04L009/00

CPC classification number: H04N21/42623 ,  H04N21/26613 ,  H04N21/4623

Abstract: A semiconductor integrated circuit for the processing of conditional access television signals, the circuit including an input interface for receiving encrypted television signals and an output interface for output of decrypted television signals. Control signals broadcast with the television signals include control words and common keys. The common keys are received in encrypted form, encrypted according to a secret key unique to each semiconductor integrated circuit. The input interface is connected to a decryption circuit whereby the only manner of providing the common keys to the circuit are in encrypted form encrypted according to the secret key. Due to the monolithic nature of the circuit, no secrets are exposed and the system is secure.

Abstract translation: 一种用于处理条件接收电视信号的半导体集成电路，该电路包括用于接收加密的电视信号的输入接口和用于输出解密的电视信号的输出接口。 用电视信号广播的控制信号包括控制字和公共密钥。 公共密钥以加密形式接收，根据每个半导体集成电路独有的秘密密钥进行加密。 输入接口连接到解密电路，由此向电路提供公共密钥的唯一方式是根据密钥加密的加密形式。 由于电路的整体性质，没有暴露的秘密和系统是安全的。