CONTENT PROTECTION USING A PROTECTION STREAM
    3.
    发明公开
    CONTENT PROTECTION USING A PROTECTION STREAM 审中-公开
    内容保护上的保护系统

    公开(公告)号:EP1831888A2

    公开(公告)日:2007-09-12

    申请号:EP05850077.8

    申请日:2005-12-14

    IPC分类号: G11B20/00 G11B27/28

    摘要: The invention relates to a portable storage medium, a media player, a method, and a signal for disturbing the perception of content provided in a first media stream. The first media stream is combined with a second media stream in at least one transport stream. The media player includes a control unit, which receives a user selection of reproducing content provided in the first media stream, (step 40), selects the second media stream for presentation together with the first media stream, (step 42), determines if there is a user- selectable object in the second stream having an action associated with it, (step 50), and at least orders the automatic performance of the action associated with the user-selectable object found, (step 52), in order to disturb the perception of content provided in the first media stream.

    HIERARCHICAL SCHEME FOR SECURE MULTIMEDIA DISTRIBUTION
    4.
    发明公开
    HIERARCHICAL SCHEME FOR SECURE MULTIMEDIA DISTRIBUTION 审中-公开
    分层方案用于安全多媒体分发

    公开(公告)号:EP1584194A1

    公开(公告)日:2005-10-12

    申请号:EP03813678.4

    申请日:2003-12-10

    发明人: HARS, Laszlo

    IPC分类号: H04N7/24

    摘要: Various quality versions of an electronic content are defined, and one or more distortion algorithms (22, 32) that are executable to generate a lower quality version of the electronic content by a distortion of the highest quality version (21, 31) are defined. Each quality version is selectively assigned a content key (CK) whereby an electronic content player (34, 70) will have the appropriate information when decrypting, decoding, and/or distorting the highest quality version (21, 31) of the electronic content.

    Method and system for gradually degrading the quality of digital content in a DRM system
    6.
    发明公开
    Method and system for gradually degrading the quality of digital content in a DRM system 审中-公开
    方法和系统的DRM系统在数字内容的质量逐渐恶化

    公开(公告)号:EP1724699A1

    公开(公告)日:2006-11-22

    申请号:EP05010681.4

    申请日:2005-05-17

    发明人: Theisen, Rolf

    IPC分类号: G06F21/00 G11B20/00 G06Q10/00

    摘要: A software agent (107) for digital rights management, comprising a unit (106) adapted to manage use rights for a given digital multimedia content (CONT) at a given portable electronic device (101), is characterized in that said software agent (107) is adapted to gradually degrade the quality of the digital multimedia content (CONT) upon reading or otherwise invoking the digital multimedia content (CONT). Also claims for a portable electronic device, a digital rights management system, and for a method for managing use rights for digital multimedia content.

    摘要翻译: 软件代理(107),用于数字权限管理方法,包括一个单元(106)angepasst在给定便携式电子设备(101),所述软件代理,其特征在于用于管理对于一个给定的数字多媒体内容(CONT)使用权(107 )是angepasst在阅读或以其他方式调用所述数字多媒体内容(CONT),逐渐降低数字多媒体内容(CONT)的质量。 因此,对于便携式电子设备,数字版权管理系统,以及用于管理数字多媒体内容的使用权限的方法权利要求。

    METHOD AND APPARATUS FOR ENHANCING CHROMA DISTORTION IN A VIDEO COPY PROTECTION SIGNAL
    7.
    发明公开
    METHOD AND APPARATUS FOR ENHANCING CHROMA DISTORTION IN A VIDEO COPY PROTECTION SIGNAL 有权
    方法和设备以增加色彩失真在复制保护的视频

    公开(公告)号:EP1310093A2

    公开(公告)日:2003-05-14

    申请号:EP01955986.3

    申请日:2001-07-26

    发明人: QUAN, Ronald

    IPC分类号: H04N7/167 H04N5/913 G11B20/00

    摘要: A modified ColorstripeTM copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color signal (color burst) in the region of the sync tip. When an illegal copy is made, a pre-blanked end of line portion causes a TV set to trigger the color burst sample pulse ahead of time and cause the incorrect color signal in the sync tip region to be sampled. Thus, since the sync tip region has incorrect color phase or frequency, the resulting illegal copy will have enhanced color distortions. In other embodiments, other portions of the horizontal blanking interval are lowered in level and incorrect color bursts are added to a portion or portions of the back porch and/or portion of the front porch. The various embodiments of the process may include an adaptable process, as well as several alternative ACP signals for use in combination with the process.

    A recording of an information signal
    8.
    发明公开
    A recording of an information signal 失效
    Aufnahme von einem Datensignal。

    公开(公告)号:EP0348570A1

    公开(公告)日:1990-01-03

    申请号:EP88305984.2

    申请日:1988-06-29

    IPC分类号: G11B20/00 H04N5/91

    CPC分类号: G11B20/00826 G11B20/00086

    摘要: A recording of an information signal, which recording comprises the information signal and a spoiler signal, the spoiler signal being such that it is of a frequency which has been modulated to be in synchronism with a varying frequency modulating signal. Also provided are a method of recording an information signal in which the spoiler signal is also recorded, and apparatus for producing a recording of the information signal. The drawing shows a circuit diagram for the apparatus.

    摘要翻译: 信息信号的记录,该记录包括信息信号和扰流信号,扰流信号使其具有被调制成与变化的频率调制信号同步的频率。 还提供了记录其中还记录有扰流信号的信息信号的方法,以及用于产生信息信号的记录的装置。 该图示出了该装置的电路图。

    METHOD AND APPARATUS FOR ENHANCING CHROMA DISTORTION IN A VIDEO COPY PROTECTION SIGNAL
    9.
    发明授权
    METHOD AND APPARATUS FOR ENHANCING CHROMA DISTORTION IN A VIDEO COPY PROTECTION SIGNAL 有权
    方法和设备以增加色彩失真在复制保护的视频

    公开(公告)号:EP1310093B1

    公开(公告)日:2012-01-11

    申请号:EP01955986.3

    申请日:2001-07-26

    发明人: QUAN, Ronald

    IPC分类号: H04N7/167 H04N5/913 G11B20/00

    摘要: A modified ColorstripeTM copy protection process utilizes a basic anti-copy protection (ACP) signal that causes attenuation of a video signal, wherein, in one embodiment, the process modifies (lowers) the level of a front porch portion and adds an incorrect color signal (color burst) in the region of the sync tip. When an illegal copy is made, a pre-blanked end of line portion causes a TV set to trigger the color burst sample pulse ahead of time and cause the incorrect color signal in the sync tip region to be sampled. Thus, since the sync tip region has incorrect color phase or frequency, the resulting illegal copy will have enhanced color distortions. In other embodiments, other portions of the horizontal blanking interval are lowered in level and incorrect color bursts are added to a portion or portions of the back porch and/or portion of the front porch. The various embodiments of the process may include an adaptable process, as well as several alternative ACP signals for use in combination with the process.

    DISC PROTECTION SCHEME
    10.
    发明公开
    DISC PROTECTION SCHEME 审中-公开
    驱动保护方案

    公开(公告)号:EP1831886A2

    公开(公告)日:2007-09-12

    申请号:EP05824326.2

    申请日:2005-12-13

    IPC分类号: G11B20/00 G11B27/28

    摘要: The invention relates to a portable storage medium, a media player and a method of disturbing the perception of content provided in a first media stream. The first media stream is combined with other media streams to at least one transport stream and provided, together with at least one second media stream, on the portable storage medium. The media player includes a control unit, which retrieves a playing control unit from the storage medium and implements it, (step 37), receives a user selection of reproducing content provided in the first media stream, (step 40), selects the second media stream for presentation in relation to the first media stream based on the user selection, (step 44), and presents content provided in the second media stream in relation to the first media stream so that the content of the second media stream disturbs the perception of content provided in the first media stream, (step 48).