VERSATILE MUSIC DISTRIBUTION
    1.
    发明申请
    VERSATILE MUSIC DISTRIBUTION 审中-公开
    VERSATILE音乐分配

    公开(公告)号:US20160005411A1

    公开(公告)日:2016-01-07

    申请号:US14765916

    申请日:2014-02-13

    Abstract: Methods and devices are described whereby a representation of an original PCM signal may be reversibly degraded in a controlled manner and information losslessly embedded to produce a streamable PCM signal, which provides a controlled audio quality when played on standard players and conditional access to a lossless presentation of the original PCM signal. Using such techniques allows control over the level of degradation of the signal and also flexibility in the type information of information embedded. Some methods require a song key, which is employed in one or both of the degrading and embedding steps and for creating a token. These methods may further require a user key, which is used to encrypt the song key before creating the token.

    Abstract translation: 描述了方法和装置,其中原始PCM信号的表示可以以受控的方式可逆地降级,并且无损地嵌入信息以产生可流式PCM信号,其在标准播放器上播放时提供受控音频质量并且对无损表示进行条件访问 的原始PCM信号。 使用这样的技术允许控制信号的劣化水平以及嵌入信息的类型信息的灵活性。 一些方法需要歌曲键,其用于一个或两个降级和嵌入步骤以及用于创建令牌。 这些方法可能还需要用户密钥,用户密钥用于在创建令牌之前加密歌曲密钥。

    Limited use data storing device
    10.
    发明申请
    Limited use data storing device 失效
    有限使用数据存储设备

    公开(公告)号:US20120185662A1

    公开(公告)日:2012-07-19

    申请号:US13374004

    申请日:2011-12-07

    Abstract: Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, methods of retrieving information from a data storage device previously deactivated by modification or degradation of at least a portion of the data storage device are disclosed.

    Abstract translation: 公开了用于控制对存储在存储器或数据存储设备中的信息的访问的方法和系统的实施例。 在各种实施例中,公开了通过数据存储设备的至少一部分的修改或劣化从先前停用的数据存储设备中检索信息的方法。

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