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    • 2. 发明申请
    • Audio and video recording apparatus
    • 音视频录像设备
    • US20070248228A1
    • 2007-10-25
    • US11783132
    • 2007-04-06
    • Hiromi NishiuraJunji Shiokawa
    • Hiromi NishiuraJunji Shiokawa
    • H04N7/167
    • H04N7/1675G11B20/00086G11B20/00173G11B20/0021G11B20/00246G11B20/00753G11B20/00768G11B2220/2516H04N21/4334H04N21/4408
    • Simultaneous recording of a digital content, which does not specify Copy Free, on recording medium of the same type is not authorized. Therefore, when a content that has been recorded by a recording/reproducing apparatus is being reproduced by the recording/reproducing apparatus, the content cannot be reproduced from the recording medium by any other reproducing apparatus. Moreover, when any other reproducing apparatus is used for reproduction, the content has to be moved from the recording/reproducing apparatus to the recording medium. This is inconvenient. In the recording/reproducing apparatus, data is recorded on one dismountable recording medium after it is encrypted using a local encryption key so that the data can be accessed by the recording/reproducing apparatus which has recorded the data. On the other recording medium, the data is recorded after it is encrypted without employment of the local encryption key so that the data can be accessed by any other reproducing apparatus.
    • 在同一类型的记录介质上同时录制不指定“复制自由”的数字内容未经授权。 因此,当由记录/再现装置记录的内容正由记录/再现装置再现时,不能通过任何其它再现装置从记录介质再现内容。 此外,当任何其他再现装置用于再现时,内容必须从记录/再现装置移动到记录介质。 这是不方便的 在记录/再现装置中,在使用本地加密密钥加密之后,将数据记录在一个可拆卸记录介质上,以便可以由已经记录数据的记录/再现装置来访问数据。 在另一个记录介质上,在不使用本地加密密钥加密数据之后,记录数据,以便数据可被任何其它再现装置访问。