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    Digital information signal transmitting/receiving method and system
    4.
    发明授权
    Digital information signal transmitting/receiving method and system 失效
    数字信息发送/接收方法和系统

    公开(公告)号：US5719943A

    公开(公告)日：1998-02-17

    申请号：US409804

    申请日：1995-03-24

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

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

    IPC分类号： H04N5/926 ,  H04N5/937 ,  H04N7/52 ,  H04L9/00 ,  H04N7/167

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

    摘要： A digital information signal transmitting/receiving method and system having a transmitter for transmitting an encrypted digital information signal and a plurality of receivers for receiving the encrypted digital information signal from the transmitter. The transmitter simultaneously distributes a plurality of identification codes associated with the receivers at a time ahead of the digital information signal. The receivers detect whether a particular identification code assigned to the receiver was included within a received plurality of identification codes. When the particular identification code has been detected as having been received the received encrypted digital information signal is decrypted into the original digital information. In order to request that a particular identification code be included so as to allow access to a program, either one of the receivers or the recorders each generate an information request signal. The transmitter is responsive to the information request signals to add to the digital information signal at a time ahead of the digital information signal, identification signals for identifying the receivers or the recorders which generated the information request signals, thereby producing a transmission signal formed of those signals, and to distribute this transmission signal to the receivers. The recorders control the received information signal to be recorded in response to the identification signals received by the receivers.

    摘要翻译： 一种数字信息信号发送/接收方法和系统，具有用于发送加密的数字信息信号的发射机和用于从发射机接收加密的数字信息信号的多个接收机。 发射机在数字信息信号之前的时间同时分配与接收机相关联的多个识别码。 接收机检测分配给接收机的特定识别码是否包含在所接收的多个识别码内。 当检测到特定的识别码已被接收时，接收到的加密的数字信息信号被解密成原始的数字信息。 为了请求特定的识别码被包括以允许对程序的访问，接收器或记录器中的任一个每个都生成信息请求信号。 发射机响应信息请求信号，在数字信息信号之前的时间添加数字信息信号，识别信号以识别生成信息请求信号的接收机或记录器，从而产生由那些 信号，并将该发送信号分发给接收机。 记录器响应于接收机接收到的识别信号来控制要记录的接收信息信号。

    Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information
    10.
    发明授权
    Information receiving and recording/reproducing apparatus/method having function for limiting/delimiting for protecting copyright of recording information 失效
    具有用于限制/限定用于保护记录信息的版权的功能的信息接收和记录/再现装置/方法

    公开(公告)号：US5912969A

    公开(公告)日：1999-06-15

    申请号：US993190

    申请日：1997-12-18

    申请人： Manabu Sasamoto ,  Nobutaka Amada ,  Takao Arai ,  Takaharu Noguchi ,  Hitoaki Owashi ,  Hideo Nishijima ,  Hiroaki Ono ,  Hiroo Okamoto

    发明人： Manabu Sasamoto ,  Nobutaka Amada ,  Takao Arai ,  Takaharu Noguchi ,  Hitoaki Owashi ,  Hideo Nishijima ,  Hiroaki Ono ,  Hiroo Okamoto

    IPC分类号： G11B20/10 ,  G11B20/00 ,  H04N5/913 ,  H04N7/167 ,  H04N9/804 ,  H04N21/4408 ,  H04L9/00

    CPC分类号： G11B20/00086 ,  G11B20/0021 ,  G11B20/00246 ,  G11B20/00333 ,  H04N21/4408 ,  H04N5/913 ,  H04N7/1675 ,  H04N2005/91335 ,  H04N2005/91364 ,  H04N9/8042

    摘要： An apparatus comprising a transmission system for transmitting an information signal, and a reception system including an information receiving unit for receiving the information signal, and an information recording/reproducing unit for recording/reproducing the received information signal on/from a recording medium. The reception system includes a specific information storage circuit for storing specific information which is assigned peculiarly to the reception system in advance, a specific information donating circuit for adding the specific information to the received information signal or encrypting the received information signal on the basis of the specific information to supply the resulting information signal to the information recording/reproducing unit, and a specific information judgement circuit for receiving an information signal reproduced by the information recording/reproducing unit and verifying the information signal with a condition based on the specific information stored in the specific information storage circuit so that when the condition is satisfied, a signal obtained by deleting the specific information added to the reproduced information signal or by decrypting the encrypted information signal is outputted.

    摘要翻译： 一种包括用于发送信息信号的传输系统和包括用于接收信息信号的信息接收单元的接收系统的装置，以及用于在/从记录介质上记录/再现接收到的信息信号的信息记录/再现单元。 接收系统包括：特定信息存储电路，用于存储预先向接收系统特别分配的特定信息;特定信息提供电路，用于将特定信息添加到接收到的信息信号或基于接收信息信号加密接收到的信息信号 特定信息以将所得到的信息信号提供给信息记录/再现单元，以及特定信息判断电路，用于接收由信息记录/再现单元再现的信息信号，并且基于存储在存储器中的特定信息的条件来验证信息信号 特定信息存储电路，使得当满足条件时，输出通过删除添加到再现信息信号的特定信息或通过解密加密信息信号而获得的信号。