OBTAINING A CONTROL WORD TO REVEAL A CLIENT DEVICE IDENTITY
    1.
    发明申请
    OBTAINING A CONTROL WORD TO REVEAL A CLIENT DEVICE IDENTITY 有权
    获取控制字以显示客户端设备标识

    公开(公告)号:US20130205132A1

    公开(公告)日:2013-08-08

    申请号:US13879347

    申请日:2011-10-14

    IPC分类号: H04L29/06

    摘要: The invention provides for a solution enabling obtaining a control word in the client. The client device has a unique binary identification. An input transformed control word is mapped from an input transform domain to an output transform domain to thereby obtain an output transformed control word by successively applying a transformation function to the input transformed control word using each compound of seeds from the set successively as an input to the successive transformation functions. Each of the successive transformation functions is one of a regular transformation function, a first special transformation function and a second special transformation function. The obtained control word can be used to decrypt one of two copies of a part of content data. The copy that can be decrypted contains a watermark representing either a binary “0” or a binary “1” and represents a bit of the unique binary identification of the client device.

    摘要翻译: 本发明提供了一种能够在客户端中获得控制字的解决方案。 客户端设备具有唯一的二进制识别。 将输入变换的控制字从输入变换域映射到输出变换域,从而通过使用来自所述集合的每个种子组合连续地将变换函数应用于输入变换的控制字来获得输出变换的控制字作为输入, 连续变换函数。 每个连续变换函数是常规变换函数,第一特殊变换函数和第二特殊变换函数之一。 所获得的控制字可以用于解密部分内容数据的两个拷贝之一。 可以被解密的副本包含表示二进制“0”或二进制“1”的水印,并且表示客户端设备的唯一二进制标识的位。

    CONDITIONAL ENTITLEMENT PROCESSING FOR OBTAINING A CONTROL WORD
    4.
    发明申请
    CONDITIONAL ENTITLEMENT PROCESSING FOR OBTAINING A CONTROL WORD 有权
    用于获得控制词的条件执行处理

    公开(公告)号:US20100251285A1

    公开(公告)日:2010-09-30

    申请号:US12715047

    申请日:2010-03-01

    IPC分类号: H04N7/167

    摘要: Embodiments of the invention provide an improved method and an improved receiver for obtaining a control word. Two or more subkeys are obtained in a receiver. Each subkey was encrypted under control of a key received in an entitlement message or transformed under control of a seed received in an entitlement message. After decryption or transformation, the subkeys are combined to obtain the control word. Typically at least one of the entitlement messages is a positive entitlement message and at least one of the entitlement messages is a negative entitlement message. Embodiments of the invention can be used in a conditional access system such as a Pay-TV system.

    摘要翻译: 本发明的实施例提供了一种用于获得控制字的改进方法和改进的接收机。 在接收机中获得两个或多个子密钥。 每个子密钥在授权消息中接收到的密钥的控制下被加密,或者在授权消息中接收的种子的控制下进行变换。 解密或变换后,组合子项以获得控制字。 通常,授权消息中的至少一个是正授权消息,并且授权消息中的至少一个是负授权消息。 本发明的实施例可以用在诸如付费电视系统之类的条件接收系统中。

    Obtaining a control word to reveal a client device identity

    公开(公告)号:US09660965B2

    公开(公告)日:2017-05-23

    申请号:US13879347

    申请日:2011-10-14

    摘要: The invention provides for a solution enabling obtaining a control word in the client. The client device has a unique binary identification. An input transformed control word is mapped from an input transform domain to an output transform domain to thereby obtain an output transformed control word by successively applying a transformation function to the input transformed control word using each compound of seeds from the set successively as an input to the successive transformation functions. Each of the successive transformation functions is one of a regular transformation function, a first special transformation function and a second special transformation function. The obtained control word can be used to decrypt one of two copies of a part of content data. The copy that can be decrypted contains a watermark representing either a binary “0” or a binary “1” and represents a bit of the unique binary identification of the client device.

    Flash system for multi-aperture imaging
    10.
    发明授权
    Flash system for multi-aperture imaging 有权
    闪光灯系统用于多光圈成像

    公开(公告)号:US08917349B2

    公开(公告)日:2014-12-23

    申请号:US13810227

    申请日:2010-07-16

    摘要: A method and a system for forming an image of a scene are provided. The method includes capturing an image of the scene by exposing an image sensor to radiation from one part of the EM spectrum using one aperture and to radiation from another part of the EM spectrum using another aperture having a different size than the first aperture. Simultaneously with capturing the image, the scene is illuminated with radiation from the second part of the EM spectrum. The image is then formed on the basis of image data generated by the radiation from the first part of the EM spectrum and image data generated by radiation from the second part of the EM spectrum.

    摘要翻译: 提供了一种用于形成场景图像的方法和系统。 该方法包括通过使用一个孔径将图像传感器暴露于来自EM光谱的一部分的辐射以及使用具有与第一孔径不同的尺寸的另一孔径的EM光谱的另一部分的辐射来捕获场景的图像。 与拍摄图像同时,用EM光谱的第二部分的辐射照亮场景。 然后基于由EM光谱的第一部分的辐射产生的图像数据和从EM光谱的第二部分的辐射产生的图像数据形成图像。