公开(公告)号：EP0675655A3

公开(公告)日：1997-09-24

申请号：EP95104480.9

申请日：1995-03-27

申请人： HITACHI, LTD.

发明人： Amada, Nobutaka ,  Yamazaki, Shigeru ,  Noguchi, Takaharu ,  Nishijima,Hideo ,  Ono, Hiroaki ,  Okamoto, Hiroo ,  Owashi, Hitoaki ,  Arai, Takao ,  Hatanaka, Yuji ,  Saito, Seiichi

IPC分类号： H04N7/52

CPC分类号： H04N7/52 ,  H04N5/9261 ,  H04N5/937

摘要： A digital information signal transmitting/receiving method and system having a transmitter (100) for transmitting an encrypted digital information signal and a plurality of receivers (200) for receiving the encrypted digital information signal from the transmitter (100). The transmitter (100) simultaneously distributes a plurality of identification codes associated with the receivers (200) ahead of the digital information signal. Then, the digital information signal is distributed to the receivers. The receivers (200) detect particular, or their own, identification codes from the plurality of identification signals assigned to the receivers (200). The received encrypted digital information signal is decrypted into the original information on the basis of the particular identification codes associated with the corresponding receivers or the recorders (300). Either the receivers (200) or the recorders (300) generate an information request signal. The transmitter (100) is responsive to this information request signal to add to the digital information signal identification signals for identifying the receivers (200) or the recorders (300) which generated the information request signal. The recorders (300) control the received information signal to be recorded in response to the identification signals received by the receivers (200).

公开(公告)号：EP0675655B1

公开(公告)日：2002-07-24

申请号：EP95104480.9

申请日：1995-03-27

申请人： Hitachi, Ltd.

发明人： Amada, Nobutaka ,  Yamazaki, Shigeru ,  Noguchi, Takaharu ,  Nishijima,Hideo ,  Ono, Hiroaki ,  Okamoto, Hiroo ,  Owashi, Hitoaki ,  Arai, Takao ,  Hatanaka, Yuji ,  Saito, Seiichi

IPC分类号： H04N7/52 ,  H04N7/167 ,  H04N7/173

CPC分类号： H04N7/52 ,  H04N5/9261 ,  H04N5/937

公开(公告)号：EP0675655A2

公开(公告)日：1995-10-04

申请号：EP95104480.9

申请日：1995-03-27

申请人： HITACHI, LTD.

发明人： Amada, Nobutaka ,  Yamazaki, Shigeru ,  Noguchi, Takaharu ,  Nishijima,Hideo ,  Ono, Hiroaki ,  Okamoto, Hiroo ,  Owashi, Hitoaki ,  Arai, Takao ,  Hatanaka, Yuji ,  Saito, Seiichi

IPC分类号： H04N7/52

CPC分类号： H04N7/52 ,  H04N5/9261 ,  H04N5/937

摘要： A digital information signal transmitting/receiving method and system having a transmitter (100) for transmitting an encrypted digital information signal and a plurality of receivers (200) for receiving the encrypted digital information signal from the transmitter (100). The transmitter (100) simultaneously distributes a plurality of identification codes associated with the receivers (200) ahead of the digital information signal. Then, the digital information signal is distributed to the receivers. The receivers (200) detect particular, or their own, identification codes from the plurality of identification signals assigned to the receivers (200). The received encrypted digital information signal is decrypted into the original information on the basis of the particular identification codes associated with the corresponding receivers or the recorders (300). Either the receivers (200) or the recorders (300) generate an information request signal. The transmitter (100) is responsive to this information request signal to add to the digital information signal identification signals for identifying the receivers (200) or the recorders (300) which generated the information request signal. The recorders (300) control the received information signal to be recorded in response to the identification signals received by the receivers (200).

摘要翻译： 的数字信息信号发送/接收方法和具有用于发送到加密的数字信息信号的发射器（100）和接收器，用于从发送器（100）接收加密的数字信息信号中的多个（200）系统。 发射机（100）同时分配的与所述接收器（200）前方的数字信息信号的相关联的识别码的多元性。 然后，数字信息信号被分发到接收器。 接收器（200）检测特定的，或自己的，识别代码从分配给所述接收器（200）识别信号的多元性。 所接收到的加密的数字信息信号被解密成与相应的接收器或记录器（300）相关联的特定识别码的基础上，原始信息。 任一接收器（200）或记录器（300），以产生信息请求信号。 发射机（100）响应于该信息请求信号添加到数字信息信号的识别信号用于识别所述接收器（200）或所生成的信息请求信号记录器（300）。 记录器（300）控制所述接收的信息信号被记录在响应于由所述接收器（200）接收到的识别信号。