公开(公告)号：US20080118006A1

公开(公告)日：2008-05-22

申请号：US11874337

申请日：2007-10-18

Applicant: S. Harish Krishnan ,  Parag Naik

Inventor： S. Harish Krishnan ,  Parag Naik

IPC: H04L27/22

CPC classification number: H04L27/2662 ,  H04L27/2607 ,  H04L27/2665

Abstract: At a receiver incoming coded OFDM Symbol Data are passed through a Coarse Symbol Timing Synchronization module to determine the approximate start of the symbol. In one embodiment this is accomplished through correlation. The symbol is then passed through an FFT (2K or 8K, depending on the mode desired by the receiver). Since the Coarse Symbol Timing Synchronization module only determines an approximate start point of the symbol, a process of fine synchronization is used to adjust this approximate start point and determine a more accurate start point of the symbol. In this manner, the receiver is enabled to process COFDM symbols in DVB-T transmissions (where the symbols include a cyclic prefix to overcome echoes). One output of an FFT operation is magnitude. Magnitude is used for Channel Estimation (or Channel Correction). Another output of an FFT operation is phase discontinuity or rotations. Phase discontinuities are used in a fine synchronization process to determine the number of phase discontinuities. Phase discontinuity data of the symbol is passed through an N-Point FFT.

Abstract translation: 在接收机输入的OFDM符号数据被传送通过粗符号定时同步模块来确定符号的大致开始。 在一个实施例中，这是通过相关来实现的。 然后，该符号通过FFT（2K或8K，取决于接收机所需的模式）。 由于粗符号定时同步模块仅确定符号的近似开始点，因此使用精细同步的过程来调整该近似起始点并确定符号的更准确的起始点。 以这种方式，接收机能够处理DVB-T传输中的COFDM符号（其中符号包括循环前缀以克服回声）。 FFT运算的一个输出是幅度。 幅度用于信道估计（或信道校正）。 FFT运算的另一个输出是相位不连续或旋转。 相位不连续性用于精细同步过程以确定相位不连续性的数量。 符号的相位不连续数据通过N点FFT。

公开(公告)号：US07356250B2

公开(公告)日：2008-04-08

申请号：US10040734

申请日：2002-01-04

Applicant: David Betz ,  Mindy Lam ,  James Grunke

Inventor： David Betz ,  Mindy Lam ,  James Grunke

IPC: H04N5/00 ,  H04N27/00 ,  H04N5/91 ,  H04N3/08 ,  G06F3/16

CPC classification number: G11B27/105 ,  G11B2220/2562

Abstract: Systems and methods for creating virtual stop-off points in a movie title, where the viewer can explore interesting content using zoom, pan and gamma controls are provided. Methods include creating an interest point from one or more digital video titles. Systems include a composer for creating interest points in a video and a viewer for manipulating and displaying the interest points.

Abstract translation: 提供了在电影标题中创建虚拟停止点的系统和方法，其中观看者可以使用缩放，平移和伽马控制来探索有趣的内容。 方法包括从一个或多个数字视频标题创建兴趣点。 系统包括用于在视频中创建兴趣点的作曲者和用于操纵和显示兴趣点的观众。

公开(公告)号：US20080043850A1

公开(公告)日：2008-02-21

申请号：US11924463

申请日：2007-10-25

Applicant: Hari Nair ,  Gordon Petrides

Inventor： Hari Nair ,  Gordon Petrides

IPC: H04N7/12 ,  H04B1/06 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N5/145 ,  H04N7/014

Abstract: Methods and apparatus, including computer program products, implementing and using techniques for computing motion vectors in a digital video sequence are disclosed. A recursive hierarchical method is used to determine a motion vector by using multiple resolution levels of the image frames. A best motion vector is first determined for the lowest resolution level. The best motion vector is propagated to a higher resolution level, where some adjustments are made and a new best motion vector is determined. The new best motion vector is propagated to yet another higher resolution level, where more adjustments are made and another new best motion vector is determined. This process is repeated until the highest, original, resolution level has been reached and a best motion vector has been identified. The identified best motion vector at the original resolution level is used for performing motion compensation.

Abstract translation: 公开了包括计算机程序产品在数字视频序列中计算运动矢量的实现和使用技术的方法和装置。 使用递归分层方法通过使用图像帧的多个分辨率级别来确定运动矢量。 首先确定最低分辨率级别的最佳运动矢量。 最佳运动矢量被传播到更高的分辨率水平，其中进行一些调整并且确定新的最佳运动矢量。 新的最佳运动矢量传播到另一个更高的分辨率水平，其中进行更多的调整并且确定另一个新的最佳运动矢量。 重复该过程直到达到最高原始分辨率水平，并且已经确定了最佳运动矢量。 使用原始分辨率级别识别的最佳运动矢量进行运动补偿。

公开(公告)号：USRE40074E1

公开(公告)日：2008-02-19

申请号：US11188285

申请日：2005-07-21

Applicant: Donald S. Butler ,  Xu Dong ,  Jack J. Campbell

Inventor： Donald S. Butler ,  Xu Dong ,  Jack J. Campbell

IPC: H04N7/01

CPC classification number: H04N7/0112 ,  H04N7/012 ,  H04N7/0132 ,  Y10S348/91

Abstract: An interlaced television signal is derived from an interlaced 625 line, nominally 50 Hz field rate television signal, the derived television signal having perceived reduced line structure and reduce flicker. The field rate and the number of lines of the derived television signal are increased with respect to the field rate and the number of lines of the original television signal, such that perceived flicker and line structure in the derived television signal is reduced. The increase in the field rate and the increase in the number of lines in the derived television signal results in a horizontal scanning rate that does not substantially exceed twice the horizontal scanning rate of the original television signal while minimizing undesirable motion artifacts.

Abstract translation: 隔行扫描的电视信号是从隔行的625行，标称的50Hz场速率电视信号导出的，得到的电视信号具有感知到的减少行结构并减少闪烁。 导出的电视信号的场速和行数相对于现场速率和原始电视信号的行数增加，从而减少了导出的电视信号中的感知到的闪烁和行结构。 导出的电视信号中场速的增加和行数的增加导致水平扫描速率基本上不超过原始电视信号的水平扫描速率的两倍，同时最小化不期望的运动伪影。

公开(公告)号：US20080025631A1

公开(公告)日：2008-01-31

申请号：US11565464

申请日：2006-11-30

Applicant: Greg Neal

Inventor： Greg Neal

IPC: G06K9/48 ,  G06K9/62 ,  G06K9/40

CPC classification number: G06T7/0002 ,  G06K9/00456 ,  G06K9/00711 ,  G06K9/325

Abstract: The invention provides for automatically identifying the location of a displayed video window based upon a characterization of selected portions of the image for realness based upon a distribution of luminance values for the selected portions. The image is then searched mathematically for a large rectangle of realness, and if found, a similar operation is performed in a smaller rectangle around each of the edges of the large rectangle, in turn, zooming in to a resolution of one pixel, thus identifying the position of the edge. This process can be repeated as often as necessary in order to maintain a fix on the edges of the video window.

Abstract translation: 本发明提供了基于所选择的部分的亮度分布的分布，基于用于实际的图像的选定部分的表征来自动识别所显示的视频窗口的位置。 然后在数学上搜索图像以获得实质的大矩形，并且如果发现，则在大矩形的每个边缘周围的较小矩形中执行类似的操作，然后依次放大到一个像素的分辨率，从而识别 边缘的位置。 为了维持视频窗口的边缘上的固定，可以根据需要重复该过程。

公开(公告)号：US20080013725A1

公开(公告)日：2008-01-17

申请号：US11747839

申请日：2007-05-11

Applicant: Osamu Kobayashi

Inventor： Osamu Kobayashi

IPC: H04N7/167

CPC classification number: H04N7/167 ,  H04L29/06 ,  H04N7/1675 ,  H04N21/23476 ,  H04N21/2541 ,  H04N21/4122 ,  H04N21/4367 ,  H04N21/44055 ,  H04N21/835

Abstract: A packet based high bandwidth copy protection method is described that includes the following operations. Forming a number of data packets at a source device, encrypting selected ones of the data packets based upon a set of encryption values, transmitting the encrypted data packets from the source device to a sink device coupled thereto, decrypting the encrypted data packets based in part upon the encryption values, and accessing the decrypted data packets by the sink device.

Abstract translation: 描述了基于分组的高带宽复制保护方法，其包括以下操作。 在源设备处形成多个数据分组，基于一组加密值对所选数据分组进行加密，将加密的数据分组从源设备传输到耦合到其的宿设备，部分地对加密的数据分组进行解密 根据加密值，以及由宿设备访问解密的数据分组。

公开(公告)号：US20070198888A1

公开(公告)日：2007-08-23

申请号：US11380820

申请日：2006-04-28

Applicant: Yuwei Zhang

Inventor： Yuwei Zhang

IPC: H03M13/00

CPC classification number: H03M13/2936 ,  H03M13/253 ,  H03M13/256 ,  H03M13/2948 ,  H03M13/3994

Abstract: A decoding system decodes forward error correction (FEC) encoded data. Factor graph circuitry (such as trellis decoder circuitry) processes the FEC encoded data according to at least one factor graph. Order restoring circuitry (such as convolutional deinterleaver circuitry) is coupled to an output of the factor graph circuitry and restores ordering of symbols in the encoded data. Error detection and correction circuitry is coupled to an output of the order restoring circuitry and processes block-based error correcting codes to detect and correct errors in the FEC encoded data and to provide a hard-decision output to an output of the decoding system. Feedback circuitry (such as convolutional interleaver circuitry and symbol interleaver circuitry) is coupled to process the hard-decision output from the error correction and detection circuitry and to provide the processed hard-decision output to the factor graph circuitry.

Abstract translation: 解码系统解码前向纠错（FEC）编码数据。 因数图电路（例如网格解码器电路）根据至少一个因子图处理FEC编码数据。 订单恢复电路（例如卷积解交织器电路）被耦合到因子图表电路的输出并恢复编码数据中符号的排序。 错误检测和校正电路耦合到订单恢复电路的输出并处理基于块的纠错码，以检测和纠正FEC编码数据中的错误，并向解码系统的输出提供硬判决输出。 耦合反馈电路（例如卷积交织器电路和符号交织器电路）以处理来自纠错和检测电路的硬判决输出，并将经处理的硬决策输出提供给因子图电路。

公开(公告)号：USH2186H1

公开(公告)日：2007-04-03

申请号：US11061249

申请日：2005-02-18

Applicant: Ali Noorbakhsh ,  David Keene ,  John Lattanzi ,  Ram Chilukuri

Inventor： Ali Noorbakhsh ,  David Keene ,  John Lattanzi ,  Ram Chilukuri

IPC: G09G5/00

Abstract: A video controller having a processor for processing executable instructions and associated data and a number of data ports, a method of acquiring extended display identification data (EDID) by a requesting one of the data ports is described. When on-board power supply is activated, an off-board power supply is deactivated and then the now active on-board power supply provides power to a memory device used to store the EDID and the executable instructions and associated data and to an on-board clock circuit capable of providing a high frequency clock signal. The on-board clock circuit, in turn, provides the high frequency clock signal from the on-board clock circuit to the memory device and if a memory read operation had been in progress when the on-board power supply was activated, then the memory read operation is completed.

公开(公告)号：US07124153B2

公开(公告)日：2006-10-17

申请号：US10100803

申请日：2002-03-18

Applicant: Stanislav Grushin

Inventor： Stanislav Grushin

IPC: G06F7/52 ,  H03K21/00

CPC classification number: H03L7/091 ,  G06F1/08 ,  H03L7/0994 ,  H03L2207/50

Abstract: An all-digital frequency conversion apparatus is provided that achieves frequency conversion using a simple phase detector and integer and fractional phase feedback information from a digital oscillator output. In an embodiment, a target phase accumulator unit generates a target phase signal to the phase detector unit. The target phase accumulator unit receives inputs from a reference signal input, and a target phase input value. The digital phase detector unit receives the reference signal, a current phase feedback input signal, and the target phase input signal. The phase detector unit outputs a frequency setting signal to a frequency value generator unit. The detector output is based on the difference between the current phase and the target phase. A frequency value generator unit is configured to output a frequency value signal to a digital oscillator unit that generates a corresponding digital output signal that is directly fed back to the current phase feedback input of the phase detector unit. A method, computing system, and software product that implement the present invention are also provided.

公开(公告)号：US20060091943A1

公开(公告)日：2006-05-04

申请号：US11061228

申请日：2005-02-18

Applicant: Ali Noorbakhsh ,  David Keene ,  John Lattanzi ,  Ram Chilukuri

Inventor： Ali Noorbakhsh ,  David Keene ,  John Lattanzi ,  Ram Chilukuri

IPC: H03K17/687

CPC classification number: G09G3/3696 ,  G09G3/2096 ,  G09G5/006 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2330/022

Abstract: Detecting when the on-board power supply is powered on or off by an auto activity detection circuit by determining if the reference clock signal (TCLK) is toggling and if the reference clock signal is toggling, then charging a capacitor to a high voltage in the auto activity detection circuit based on the toggling reference clock signal, and outputting an on-board power supply activity signal based upon the high voltage by the auto activity detection circuit indicative of whether or not the on-board power supply is active

Abstract translation: 通过确定参考时钟信号（T CLK）是否正在切换以及如果参考时钟信号正在切换，则通过自动活动检测电路来检测板载电源何时通电或关断，然后充电 基于所述切换参考时钟信号在所述自动活动检测电路中的高电压的电容器，并且通过所述自动活动检测电路基于所述高电压输出表示所述车载电源活动信号的车载电源活动信号 电源有效