Digital signal recording/reproducing apparatus
    123.
    发明授权
    Digital signal recording/reproducing apparatus 失效
    数字信号记录/再现装置

    公开(公告)号:US06804453B1

    公开(公告)日:2004-10-12

    申请号:US09571656

    申请日:2000-05-15

    IPC分类号: H04N591

    摘要: A digital signal recording apparatus is disclosed, which is capable of protecting the copyright of the analog input information encoded into a first digital signal in a recording medium. A second digital signal encrypted based on the key information and the input analog signal encrypted based on the key information are converted into a second digital signal and encrypted, and the resulting signal is selectively recorded in a recording medium. The digital signal recording apparatus further comprises a circuit for encrypting the digital signal converted from the input analog signal with a key obtained by a predetermined calculation of the key information according to a scheme similar to the second digital signal protection scheme through a digital interface, and a signal recording circuit for recording the key information and the encrypted digital signal in a recording medium.

    摘要翻译: 公开了一种数字信号记录装置,其能够保护编码到记录介质中的第一数字信号中的模拟输入信息的版权。 基于密钥信息加密的第二数字信号和基于密钥信息加密的输入模拟信号被转换成第二数字信号并被加密,并将所得到的信号选择性地记录在记录介质中。 数字信号记录装置还包括一个电路,用于通过数字接口根据类似于第二数字信号保护方案的方案,利用通过密钥信息的预定计算获得的密钥来加密从输入的模拟信号转换的数字信号;以及 用于将密钥信息和加密的数字信号记录在记录介质中的信号记录电路。

    Recording apparatus and reproducing apparatus
    124.
    发明授权
    Recording apparatus and reproducing apparatus 失效
    记录装置和再现装置

    公开(公告)号:US06771893B1

    公开(公告)日:2004-08-03

    申请号:US09399086

    申请日:1999-09-20

    IPC分类号: H04N591

    摘要: For achieving a recording apparatus and a reproducing apparatus enabling to function an interface of digital signals even when recording and reproducing analog signals, wherein the analog signal reproduced in an analog signal recording/reproducing circuit is converted into the digital signal in an encoder so as to be outputted from an interface circuit when reproducing the analog signal, while the digital signal inputted from the interface circuit is converted in a decoder into the analog signal to be recorded when recording the analog signal. Further, it comprises a digital signal recording/reproducing circuit for recording/reproducing a first digital signal into a recording medium, a converter for converting between the first digital signal and a second digital signal, and an interface circuit for inputting/outputting the second digital signal.

    摘要翻译: 为了实现即使在记录和再现模拟信号时也能够实现数字信号接口的记录装置和再现装置,其中在模拟信号记录/再现电路中再现的模拟信号在编码器中被转换成数字信号,以便 在再现模拟信号时从接口电路输出,同时在记录模拟信号时,将从接口电路输入的数字信号在解码器中转换为要记录的模拟信号。 此外,它包括用于将第一数字信号记录/再现到记录介质中的数字信号记录/再现电路,用于在第一数字信号和第二数字信号之间转换的转换器,以及用于输入/输出第二数字信号的接口电路 信号。