Index table generation in PVR applications for AVC video streams
    1.
    发明授权
    Index table generation in PVR applications for AVC video streams 有权
    用于AVC视频流的PVR应用中的索引表生成

    公开(公告)号:US09208824B2

    公开(公告)日:2015-12-08

    申请号:US10847834

    申请日:2004-05-18

    摘要: One or more methods and systems of indexing an AVC video stream are presented. In one embodiment, the method comprises identifying one or more fields within a picture of an AVC video stream. In one embodiment, a field of the one or more fields indicates the beginning of each picture. In a second embodiment, a field of the one or more fields indicates a picture type of a picture. In a third embodiment, a field of the one or more fields indicates whether a picture is a reference or a non-reference picture. By determining that a picture is a non-reference picture, the picture may be discarded, thereby reducing the memory required to implement the indexing system while increasing the available memory size. In one embodiment, a system of indexing an AVC video stream comprises a control processor, a memory, and a set of instructions resident in the memory.

    摘要翻译: 呈现一个或多个索引AVC视频流的方法和系统。 在一个实施例中,该方法包括识别AVC视频流的图片内的一个或多个字段。 在一个实施例中,一个或多个字段的字段指示每个图片的开始。 在第二实施例中,一个或多个字段的字段指示图片的图片类型。 在第三实施例中,一个或多个字段的字段指示图片是参考图片还是非参考图片。 通过确定图片是非参考图片,可能会丢弃图片,从而减少了在增加可用内存大小的同时实现索引系统所需的内存。 在一个实施例中,索引AVC视频流的系统包括控制处理器,存储器和驻留在存储器中的一组指令。

    Pseudo-random number generation based on periodic sampling of one or more linear feedback shift registers
    2.
    发明授权
    Pseudo-random number generation based on periodic sampling of one or more linear feedback shift registers 有权
    基于一个或多个线性反馈移位寄存器的周期性采样的伪随机数生成

    公开(公告)号:US08831216B2

    公开(公告)日:2014-09-09

    申请号:US13551690

    申请日:2012-07-18

    IPC分类号: G06F21/00 H04L9/06

    CPC分类号: H04L9/0668

    摘要: Disclosed are various embodiments for generating pseudo-random numbers. One such embodiment is an apparatus comprising digital hardware configured to generate pseudo-random numbers. The apparatus uses a linear feedback shift register in which the correlation between successive pseudo-random numbers is reduced.

    摘要翻译: 公开了用于生成伪随机数的各种实施例。 一个这样的实施例是包括被配置为产生伪随机数的数字硬件的装置。 该装置使用线性反馈移位寄存器,其中连续伪随机数之间的相关性减小。

    Pseudo-random number generation based on periodic sampling of one or more linear feedback shift registers
    3.
    发明授权
    Pseudo-random number generation based on periodic sampling of one or more linear feedback shift registers 失效
    基于一个或多个线性反馈移位寄存器的周期性采样的伪随机数生成

    公开(公告)号:US08229108B2

    公开(公告)日:2012-07-24

    申请号:US10642318

    申请日:2003-08-15

    IPC分类号: G06F21/00

    CPC分类号: H04L9/0668

    摘要: One or more methods and systems of generating pseudo-random numbers that are used as encryption keys in cryptographic applications are presented. In one embodiment, a method of generating pseudo-random numbers is performed by sampling output sequences of a linear feedback shift register with a specified periodicity. In one embodiment, the generating of pseudo-random numbers using linear feedback shift registers is accomplished by periodically switching between iterative outputs generated by multiple linear feedback shift registers. In one embodiment, a method of encrypting a pseudo-random number generated by a linear feedback shift register comprises using a nonlinear operator. In one embodiment, a method of further encrypting a pseudo-random number is accomplished by using a hashing function whose initial value varies over time by way of a function operating on one or more variables. In one embodiment, an apparatus for generating pseudo-random numbers using linear feedback shift registers comprises a digital hardware.

    摘要翻译: 提出了一种或多种在密码应用中用作加密密钥的伪随机数的方法和系统。 在一个实施例中,通过对具有指定周期的线性反馈移位寄存器的输出序列进行采样来产生伪随机数的方法。 在一个实施例中,使用线性反馈移位寄存器生成伪随机数是通过周期性地切换由多个线性反馈移位寄存器产生的迭代输出来实现的。 在一个实施例中,一种加密由线性反馈移位寄存器产生的伪随机数的方法包括使用非线性算子。 在一个实施例中,通过使用其初始值随着时间的变化通过在一个或多个变量上操作的函数而变化的散列函数来实现进一步加密伪随机数的方法。 在一个实施例中,使用线性反馈移位寄存器生成伪随机数的装置包括数字硬件。

    Pseudo-random Number Generation Based on Periodic Sampling of One or More Linear Feedback Shift Registers
    4.
    发明申请
    Pseudo-random Number Generation Based on Periodic Sampling of One or More Linear Feedback Shift Registers 有权
    基于一个或多个线性反馈移位寄存器的周期性采样的伪随机数生成

    公开(公告)号:US20120281827A1

    公开(公告)日:2012-11-08

    申请号:US13551690

    申请日:2012-07-18

    IPC分类号: H04L9/00

    CPC分类号: H04L9/0668

    摘要: Disclosed are various embodiments for generating pseudo-random numbers. One such embodiment is an apparatus comprising digital hardware configured to generate pseudo-random numbers. The apparatus uses a linear feedback shift register in which the correlation between successive pseudo-random numbers is reduced.

    摘要翻译: 公开了用于生成伪随机数的各种实施例。 一个这样的实施例是包括被配置为产生伪随机数的数字硬件的装置。 该装置使用线性反馈移位寄存器,其中连续伪随机数之间的相关性减小。

    Transcoding closed captioning data from broadcast DTV onto DVD
    8.
    发明申请
    Transcoding closed captioning data from broadcast DTV onto DVD 审中-公开
    将广播DTV的隐藏字幕数据转码到DVD上

    公开(公告)号:US20050276548A1

    公开(公告)日:2005-12-15

    申请号:US10865372

    申请日:2004-06-10

    IPC分类号: G11B27/034 H04N5/46

    CPC分类号: G11B27/034

    摘要: One or more methods and systems of transcoding closed captioned data from a DTV video format to a DVD video format are presented. In one embodiment, the method comprises generating a DVD by transcoding closed captioned data from one or more picture user data segments of a DTV formatted video stream to that of a GOP user data segment of a DVD formatted video stream. In one embodiment, a system for generating a DVD that is capable of displaying closed captioned data comprises a memory, a set of software instructions resident in the memory, a control processor for executing the set of software instructions, and circuitry.

    摘要翻译: 提出了一种或多种将隐藏字幕数据从DTV视频格式转码为DVD视频格式的方法和系统。 在一个实施例中,该方法包括通过将来自DTV格式的视频流的一个或多个图片用户数据段的转换为DVD格式的视频流的GOP用户数据段的封闭字幕数据来生成DVD。 在一个实施例中,用于产生能够显示隐藏字幕数据的DVD的系统包括存储器,驻留在存储器中的一组软件指令,用于执行该组软件指令的控制处理器和电路。

    Index table generation in PVR applications for AVC video streams
    9.
    发明申请
    Index table generation in PVR applications for AVC video streams 有权
    用于AVC视频流的PVR应用中的索引表生成

    公开(公告)号:US20050259960A1

    公开(公告)日:2005-11-24

    申请号:US10847834

    申请日:2004-05-18

    摘要: One or more methods and systems of indexing an AVC video stream are presented. In one embodiment, the method comprises identifying one or more fields within a picture of an AVC video stream. In one embodiment, a field of the one or more fields indicates the beginning of each picture. In a second embodiment, a field of the one or more fields indicates a picture type of a picture. In a third embodiment, a field of the one or more fields indicates whether a picture is a reference or a non-reference picture. By determining that a picture is a non-reference picture, the picture may be discarded, thereby reducing the memory required to implement the indexing system while increasing the available memory size. In one embodiment, a system of indexing an AVC video stream comprises a control processor, a memory, and a set of instructions resident in the memory.

    摘要翻译: 呈现一个或多个索引AVC视频流的方法和系统。 在一个实施例中,该方法包括识别AVC视频流的图片内的一个或多个字段。 在一个实施例中,一个或多个字段的字段指示每个图片的开始。 在第二实施例中,一个或多个字段的字段指示图片的图片类型。 在第三实施例中,一个或多个字段的字段指示图片是参考图片还是非参考图片。 通过确定图片是非参考图片,可能会丢弃图片,从而减少了在增加可用内存大小的同时实现索引系统所需的内存。 在一个实施例中,索引AVC视频流的系统包括控制处理器,存储器和驻留在存储器中的一组指令。