Control work key store for multiple data streams
    1.
    发明申请
    Control work key store for multiple data streams 审中-公开
    控制多个数据流的工作密钥库

    公开(公告)号:US20080019517A1

    公开(公告)日:2008-01-24

    申请号:US11399714

    申请日:2006-04-06

    IPC分类号: H04N7/167

    摘要: An apparatus may include circuitry, a cryptographic module, and a key store. The circuitry may hold a private key associated with first media information. The cryptographic module may operate on the private key to generate a number of first control keys for decrypting the first media information. The key store may hold the number of first control keys from the cryptographic module. In some implementations, the key store may include sufficient storage to store more than one control key from each of a number of different crypto modules. In some implementations, the key store may receive multiple control keys simultaneously or nearly so. In some implementations, the key store may output multiple control keys simultaneously, or nearly so, for decrypting multiple streams of media information at the same time.

    摘要翻译: 设备可以包括电路,加密模块和密钥存储。 电路可以保持与第一媒体信息相关联的私钥。 加密模块可以在私钥上操作以生成用于解密第一媒体信息的多个第一控制密钥。 密钥存储器可以保存来自加密模块的第一控制密钥的数量。 在一些实现中,密钥存储器可以包括足够的存储以从多个不同的密码模块中的每一个存储多于一个的控制密钥。 在一些实现中,密钥存储器可以同时或接近接收多个控制键。 在一些实现中,密钥存储可以同时或几乎同时地输出多个控制密钥,以同时解密多个媒体信息流。

    Securely configuring a system
    2.
    发明申请
    Securely configuring a system 审中-公开
    安全地配置系统

    公开(公告)号:US20060272022A1

    公开(公告)日:2006-11-30

    申请号:US11140842

    申请日:2005-05-31

    摘要: In one embodiment, the present invention includes a method of validating secure code using a first processor, loading configuration data into at least one configuration register of a conditional access unit if the secure code is validated, and preventing access to the configuration register(s) during normal operation. In such manner, encrypted content to be processed by the conditional access unit may be protected from unauthorized access. Other embodiments are described and claimed.

    摘要翻译: 在一个实施例中,本发明包括使用第一处理器验证安全代码的方法,如果安全代码被验证,则将配置数据加载到条件访问单元的至少一个配置寄存器中,并且阻止访问配置寄存器, 正常运行时。 以这种方式,可以保护由条件访问单元处理的加密内容以防止未经授权的访问。 描述和要求保护其他实施例。

    Shared logic for decoding and deinterlacing of compressed video
    3.
    发明申请
    Shared logic for decoding and deinterlacing of compressed video 有权
    压缩视频解码和去隔行的共享逻辑

    公开(公告)号:US20050226328A1

    公开(公告)日:2005-10-13

    申请号:US10815172

    申请日:2004-03-31

    摘要: One embodiment includes a method that includes receiving a compressed video stream. The method also includes decoding a number of blocks of the compressed video stream to output a number of blocks of decoded video data. The decoding is based on at least one motion compensation vector. The method also includes deinterlacing the number of blocks of the decoded video data to output deinterlaced video data. The deinterlacing of one of the blocks of the number of blocks is based on the at least one motion compensation vector if a prediction error energy for the at least one motion compensation vector for the block is less than a threshold.

    摘要翻译: 一个实施例包括一种包括接收压缩视频流的方法。 该方法还包括对压缩视频流的多个块进行解码以输出多个解码的视频数据块。 解码基于至少一个运动补偿矢量。 该方法还包括将解码的视频数据的块的数目去隔行以输出去隔行视频数据。 如果用于块的至少一个运动补偿向量的预测误差能量小于阈值,则块数量块中的一个的去隔行是基于至少一个运动补偿向量。

    Program clock synchronization in multimedia networks
    4.
    发明申请
    Program clock synchronization in multimedia networks 有权
    多媒体网络中的程序时钟同步

    公开(公告)号:US20050138455A1

    公开(公告)日:2005-06-23

    申请号:US10741675

    申请日:2003-12-19

    IPC分类号: H04J3/06 H04N7/62 G06F1/12

    CPC分类号: H04N21/4302 H04N21/242

    摘要: A method may include sampling a receive frequency at which information received over a communication link is played. The method may also include sampling a system frequency related to the communication link and computing a first value based on the sampled receive frequency and the sampled system frequency. A second value may be received via the communication link. The receive frequency may be adjusted based on the first value and the second value.

    摘要翻译: 方法可以包括对通过通信链路接收的信息进行播放的接收频率进行采样。 该方法还可以包括对与通信链路相关的系统频率进行采样,并且基于采样的接收频率和采样的系统频率来计算第一值。 可以经由通信链路接收第二值。 可以基于第一值和第二值来调整接收频率。

    Image memory tiling
    8.
    发明申请
    Image memory tiling 审中-公开
    图像记忆拼贴

    公开(公告)号:US20080158601A1

    公开(公告)日:2008-07-03

    申请号:US11648117

    申请日:2006-12-29

    IPC分类号: G06K15/00

    摘要: According to some embodiments, image information, including rows of pixels, may be determined. The image information may be associated with a plurality of image blocks, each image block including a subset of pixels from multiple rows. Moreover, a single row of pixels of the image information may span multiple image blocks. A first subset of pixels (from a first row of a first image block) may be stored into a memory unit. A second subset of pixels (from a second row of the first image block) may then be stored into the memory unit such that a first pixel of the second subset is stored proximate to a last pixel of the first subset.

    摘要翻译: 根据一些实施例,可以确定包括像素行的图像信息。 图像信息可以与多个图像块相关联,每个图像块包括来自多个行的像素的子集。 此外,图像信息的单行像素可以跨越多个图像块。 可以将第一像素子集(从第一图像块的第一行)存储到存储器单元中。 然后可以将第二子像素(从第一图像块的第二行)存储到存储器单元中,使得第二子集的第一像素被存储在第一子集的最后一个像素附近。

    Selective re-transmission of lost multi-media data packets
    9.
    发明申请
    Selective re-transmission of lost multi-media data packets 审中-公开
    丢失的多媒体数据包的选择性重传

    公开(公告)号:US20060291468A1

    公开(公告)日:2006-12-28

    申请号:US11158374

    申请日:2005-06-22

    IPC分类号: H04L12/56

    摘要: A method includes loading video data into packets and appending headers to the packets. Each of the headers includes a first field and a second field. The first field includes a data value to indicate an importance of a respective packet relative to other packets. The second field includes an importance level sequence number to indicate a position of the respective packet in a sequence of packets which have the same importance level as the respective packet.

    摘要翻译: 一种方法包括将视频数据加载到分组中并将报头附加到报文。 每个标题包括第一字段和第二字段。 第一字段包括指示相对于其他分组的相应分组的重要性的数据值。 第二字段包括重要性级序列号,以指示与分组具有相同重要性级别的分组序列中的相应分组的位置。

    De-interlacing using decoder parameters

    公开(公告)号:US20060093228A1

    公开(公告)日:2006-05-04

    申请号:US10976460

    申请日:2004-10-29

    IPC分类号: G06K9/36

    摘要: Locations of reference blocks of pixels of decoded interlaced video reference fields decoded from a compressed stream of video data are computed using motion vectors decoded from the same stream of video data. The reference block computed locations are de-interlaced with current blocks from current video fields decoded from the compressed streams of video data by low pass filtering light intensities of adjacent pixels of the reference and current blocks using low pass filter with coefficients adjustable according to discrete cosine transform (DCT) high frequency coefficients decoded from the coded stream. In addition, moving edges or objects of the de-interlaced blocks of pixels can be identified by comparing the decoded motion vector of the reference blocks to a threshold value. Then proper or more appealing light intensities for the moving edge pixels can be interpolated.