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    Video demultiplexer and decoder using efficient data recovery
    1.
    发明专利
    Video demultiplexer and decoder using efficient data recovery 有权
    视频解复用器和解码器使用有效的数据恢复

    公开(公告)号：JP2011172245A

    公开(公告)日：2011-09-01

    申请号：JP2011061158

    申请日：2011-03-18

    Applicant: Qualcomm Inc ,  クゥアルコム・インコーポレイテッドQualcomm Incorporated

    Inventor： LEE YEN-CHI ,  TSAI MING-CHANG ,  YE YAN ,  LING FAN ,  EL-MALEH KHALED HELMI

    IPC: H04N7/26 ,  H04N19/895

    CPC classification number: H04L29/06027 ,  H04L67/04 ,  H04N19/895 ,  H04N21/4382 ,  H04N21/8455

    Abstract: PROBLEM TO BE SOLVED: To provide a video demultiplexer and a decoder using efficient data recovery. SOLUTION: A demultiplexer detects a boundary between a plurality of physical layer data units and adds boundary information to a bit stream. The demultiplexer generates adaptation layer data units to generate an application layer bit stream. When the video decoder encounters an error in the bit stream, it uses the boundary information to limit the amount of data that should be concealed. In particular, the boundary information permits the error to be associated with a small segment of data. A video decoder conceals data from the beginning of the segment of data rather than an entire slice or frame in which the segment resides. In this manner, the video decoder provides efficient data recover, thereby limiting the loss of useful data that otherwise may be purposely discarded for concealment purpose. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：提供使用有效数据恢复的视频解复用器和解码器。 解决方案：解复用器检测多个物理层数据单元之间的边界，并向边比特流添加边界信息。 解复用器生成适配层数据单元以生成应用层比特流。 当视频解码器在比特流中遇到错误时，它使用边界信息来限制应隐藏的数据量。 特别地，边界信息允许错误与一小段数据相关联。 视频解码器从数据段的开头隐藏数据，而不是段所在的整个片或帧。 以这种方式，视频解码器提供有效的数据恢复，从而限制了为了隐藏目的而被有意丢弃的有用数据的丢失。 版权所有（C）2011，JPO＆INPIT

    2.
    发明专利
    未知

    公开(公告)号：NO20082301L

    公开(公告)日：2008-07-09

    申请号：NO20082301

    申请日：2008-05-20

    Applicant: QUALCOMM INC

    Inventor： LOTT CHRISTOPHER GERARD ,  TINNAKORNSRISUPHAP PEERAPOL ,  LEE YEN-CHI ,  GUPTA VIKRAM

    IPC: H04N7/24 ,  H04N19/89 ,  H04N19/895

    Abstract: The disclosure relates to reverse link lower layer assisted video error control. A method may encode video data, form a packet with the encoded video data, and transmit the packet across a wireless channel to an access network. A medium access control (MAC) layer may receive a negative acknowledgement (NAK) from the access network. The method may determine whether the received NAK is associated with a packet that contains video data. If the received NAK is associated with a packet that contains video data, the method may perform error control.

    4.
    发明专利
    未知

    公开(公告)号：BRPI0617711A2

    公开(公告)日：2011-08-02

    申请号：BRPI0617711

    申请日：2006-10-20

    Applicant: QUALCOMM INC

    Inventor： LEE YEN-CHI ,  LOTT CHRISTOPHER GERARD ,  TINNAKORNSRISUPHAP PEERAPOL ,  GUPTA VIKRAM

    IPC: H04N7/24 ,  H04N19/89 ,  H04N19/895

    Abstract: The disclosure relates to reverse link lower layer assisted video error control. A method may encode video data, form a packet with the encoded video data, and transmit the packet across a wireless channel to an access network. A medium access control (MAC) layer may receive a negative acknowledgement (NAK) from the access network. The method may determine whether the received NAK is associated with a packet that contains video data. If the received NAK is associated with a packet that contains video data, the method may perform error control.

    8.
    发明专利
    未知

    公开(公告)号：BRPI0806823A2

    公开(公告)日：2011-09-13

    申请号：BRPI0806823

    申请日：2008-01-22

    Applicant: QUALCOMM INC

    Inventor： LEE YEN-CHI ,  LEUNG NIKOLAI KONRAD NEPOMUCENO

    IPC: H04N7/14 ,  H04N19/89

    Abstract: One technique for implementing error control in response to a video data error comprises receiving an indication of a video data error from a video decoder, determining whether the video data error occurred on a reverse link of a wireless network between a video encoder and a network device, and applying error control in response to the video data error if the video data error did not occur on the reverse link. For example, the indication of the video data error may include a first sequence number (SN) of a packet comprising lost data, and determining whether the video data error occurred on the reverse link may include comparing first SN with a second SN of a packet associated with a most recent RL error.

    9.
    发明专利
    未知

    公开(公告)号：AT465598T

    公开(公告)日：2010-05-15

    申请号：AT06737618

    申请日：2006-03-08

    Applicant: QUALCOMM INC

    Inventor： LEE YEN-CHI ,  EL-MALEH KHALED HELMI ,  TSAI MING-CHANG

    IPC: H04N7/26 ,  H04N7/24

    Abstract: The disclosure is directed to techniques for region-of-interest (ROI) processing for video telephone (VT) applications. According to the disclosed techniques, a recipient device defines ROI information for video information transmitted by a sender device, i.e., far-end video information. The recipient device transmits the ROI information to the sender device. Using the ROI information transmitted by the recipient device, the sender device applies preferential encoding to an ROI within a video scene. In this manner, the recipient device is able to remotely control ROI encoding of far-end video information by the sender device.

    10.
    发明专利
    未知

    公开(公告)号：DE602006012018D1

    公开(公告)日：2010-03-18

    申请号：DE602006012018

    申请日：2006-03-08

    Applicant: QUALCOMM INC

    Inventor： LEE YEN-CHI ,  EL-MALEH KHALED HELMI ,  TSAI MING-CHANG

    IPC: H04N7/26 ,  H04N7/173

    Abstract: The disclosure is directed to techniques for region-of-interest (ROI) processing for video telephony (VT) applications. According to the disclosed techniques, a recipient device defines ROI information for video information transmitted by a sender device, i.e., far-end video information. The recipient device transmits the ROI information to the sender device. Using the ROI information transmitted by the recipient device, the sender device applies preferential encoding to an ROI within a video scene. ROI extraction may be applied to process a user description of a region of interest (ROI) to generate information specifying the ROI based on the description. The user description may be textual, graphical, or speech-based. An extraction module applies appropriate processing to generated the ROI information from the user description. The extraction module may locally reside with a video communication device, or reside in a distinct intermediate server configured for ROI extraction.

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