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    Method and system for robust watermark insertion and extraction for digital set-top boxes
    1.
    发明授权
    Method and system for robust watermark insertion and extraction for digital set-top boxes 有权
    用于数字机顶盒鲁棒水印插入和提取的方法和系统

    公开(公告)号：US08806215B2

    公开(公告)日：2014-08-12

    申请号：US13604914

    申请日：2012-09-06

    申请人： Sherman Xuemin Chen ,  Stephane Rodgers

    发明人： Sherman Xuemin Chen ,  Stephane Rodgers

    IPC分类号： H04L9/32 ,  H04N7/167

    CPC分类号： H04H20/31 ,  G06T1/0021 ,  H04H2201/50 ,  H04N5/4401 ,  H04N19/44 ,  H04N19/467 ,  H04N21/23892 ,  H04N21/43853 ,  H04N21/8358

    摘要： Methods and systems for robust watermark insertion and extraction for digital set-top boxes are disclosed and may include descrambling, detecting watermarking messages in a received video signal utilizing a watermark message parser, and immediately watermarking the descrambled video signal utilizing an embedded CPU. The embedded CPU may utilize code that may be signed by an authorized key, encrypted externally to the chip, decrypted, and stored in memory in a region off-limits to other processors. The video signal may be watermarked in a decompressed domain. The enabling of the watermarking may be verified utilizing a watchdog timer. The descriptors corresponding to the watermarking may be stored in memory that may be inaccessible by the main CPU. The watermark may comprise unique identifier data specific to the chip and a time stamp, and may be encrypted utilizing an on-chip combinatorial function.

    摘要翻译： 公开了用于数字机顶盒的鲁棒水印插入和提取的方法和系统，并且可以包括解扰，利用水印消息解析器检测接收到的视频信号中的水印消息，并立即利用嵌入式CPU对解扰的视频信号进行加水印。 嵌入式CPU可以利用可以通过授权密钥进行签名的代码，在芯片外部加密，解密并存储在与其他处理器不同的区域的存储器中。 视频信号可以在解压缩域中加水印。 可以使用看门狗定时器来验证水印的使能。 与水印相对应的描述符可以存储在主CPU可能无法访问的存储器中。 水印可以包括专用于芯片的唯一标识符数据和时间标记，并且可以使用片上组合功能进行加密。

    METHOD AND SYSTEM FOR ROBUST WATERMARK INSERTION AND EXTRACTION FOR DIGITAL SET-TOP BOXES
    2.
    发明申请
    METHOD AND SYSTEM FOR ROBUST WATERMARK INSERTION AND EXTRACTION FOR DIGITAL SET-TOP BOXES 有权
    用于数字机顶盒的稳健水印插入和提取的方法和系统

    公开(公告)号：US20090150676A1

    公开(公告)日：2009-06-11

    申请号：US11952772

    申请日：2007-12-07

    申请人： Sherman Xuemin Chen ,  Stephane Rodgers

    发明人： Sherman Xuemin Chen ,  Stephane Rodgers

    IPC分类号： H04L9/32

    CPC分类号： H04H20/31 ,  G06T1/0021 ,  H04H2201/50 ,  H04N5/4401 ,  H04N19/44 ,  H04N19/467 ,  H04N21/23892 ,  H04N21/43853 ,  H04N21/8358

    摘要： Methods and systems for robust watermark insertion and extraction for digital set-top boxes are disclosed and may include descrambling, detecting watermarking messages in a received video signal utilizing a watermark message parser, and immediately watermarking the descrambled video signal utilizing an embedded CPU. The embedded CPU may utilize code that may be signed by an authorized key, encrypted externally to the chip, decrypted, and stored in memory in a region off-limits to other processors. The video signal may be watermarked in a decompressed domain. The enabling of the watermarking may be verified utilizing a watchdog timer. The descriptors corresponding to the watermarking may be stored in memory that may be inaccessible by the main CPU. The watermark may comprise unique identifier data specific to the chip and a time stamp, and may be encrypted utilizing an on-chip combinatorial function.

    摘要翻译： 公开了用于数字机顶盒的鲁棒水印插入和提取的方法和系统，并且可以包括解扰，利用水印消息解析器检测接收到的视频信号中的水印消息，并立即利用嵌入式CPU对解扰的视频信号进行加水印。 嵌入式CPU可以利用可以通过授权密钥进行签名的代码，在芯片外部加密，解密并存储在与其他处理器不同的区域的存储器中。 视频信号可以在解压缩域中加水印。 可以使用看门狗定时器来验证水印的使能。 与水印相对应的描述符可以存储在主CPU可能无法访问的存储器中。 水印可以包括专用于芯片的唯一标识符数据和时间标记，并且可以使用片上组合功能进行加密。

    Map indicating quality of service for delivery of video data to wireless device
    5.
    发明授权
    Map indicating quality of service for delivery of video data to wireless device 有权
    映射表示将视频数据传送到无线设备的服务质量

    公开(公告)号：US08040864B2

    公开(公告)日：2011-10-18

    申请号：US12189418

    申请日：2008-08-11

    申请人： Jeyhan Karaoguz ,  Sherman Xuemin Chen ,  Michael Dove ,  Thomas J. Quigley ,  David Rosmann ,  Stephen E. Gordon

    发明人： Jeyhan Karaoguz ,  Sherman Xuemin Chen ,  Michael Dove ,  Thomas J. Quigley ,  David Rosmann ,  Stephen E. Gordon

    IPC分类号： H04Q7/24

    CPC分类号： H04W4/02 ,  H04L65/4084 ,  H04L65/80 ,  H04L67/18 ,  H04N21/23805 ,  H04N21/2402 ,  H04N21/25841 ,  H04N21/482 ,  H04N21/6131 ,  H04N21/6181 ,  H04N21/64723 ,  H04N21/64769 ,  H04N21/6547 ,  H04W24/00 ,  H04W28/24

    摘要： Providing Quality of Service (QoS) information regarding video content delivery to a requesting wireless device. QoS/position information is first collected by, for each wireless device of a plurality of serviced wireless devices operating within a service area, receiving position information regarding a wireless device during delivery of video content and determining QoS provided during delivery of the video content, the QoS provided during delivery of the video content delivery varying over time and respective to the position information. The collected QoS/position information is then consolidated and a QoS map for the service area is produced based upon the consolidated collected QoS/position information. Finally, the QoS map for the service area is downloaded to the requesting wireless device. The QoS map may be tailored for the requesting wireless device based upon a current position/mobility of the requesting wireless device.

    摘要翻译： 向请求无线设备提供关于视频内容传送的服务质量（QoS）信息。 对于在服务区域内操作的多个服务无线设备的每个无线设备，首先收集QoS /位置信息，在传送视频内容期间接收关于无线设备的位置信息并确定在传送视频内容期间提供的QoS， 在传送视频内容传送期间提供的QoS随着时间而变化并且分别对应于位置信息。 然后，收集的QoS /位置信息被合并，并且基于合并的收集的QoS /位置信息来生成用于服务区域的QoS映射。 最后，将服务区域的QoS映射下载到请求无线设备。 可以基于请求的无线设备的当前位置/移动性来为请求的无线设备量身定制QoS映射。

    METHOD AND SYSTEM FOR GENERATING DIGITAL VIDEO BROADCAST (DVB) TRANSPORT STREAM FROM DIRECT SATELLITE SYSTEM (DSS) TRANSPORT STREAM
    6.
    发明申请
    METHOD AND SYSTEM FOR GENERATING DIGITAL VIDEO BROADCAST (DVB) TRANSPORT STREAM FROM DIRECT SATELLITE SYSTEM (DSS) TRANSPORT STREAM 有权
    从直接卫星系统（DSS）运输流中产生数字视频广播（DVB）传输流的方法和系统

    公开(公告)号：US20090168691A1

    公开(公告)日：2009-07-02

    申请号：US12397173

    申请日：2009-03-03

    申请人： Jiang Fu ,  Sherman Xuemin Chen ,  Jason Demas ,  Isen Vincent Wang

    发明人： Jiang Fu ,  Sherman Xuemin Chen ,  Jason Demas ,  Isen Vincent Wang

    IPC分类号： H04B7/185

    CPC分类号： H04H40/90 ,  H04B7/18578 ,  H04N5/04 ,  H04N5/4401 ,  H04N5/50 ,  H04N5/602 ,  H04N21/23608 ,  H04N21/23611

    摘要： Aspects of the method and system for converting a DSS transport stream to a DVB transport stream include encapsulating at least a prefix portion and a payload portion of a DSS transport packet into at least a header portion and a payload portion of a DVB transport packet. At least a portion of the prefix portion and the payload portion of the DSS transport packet may be mapped into at least a portion of the header portion and the payload portion of the DVB transport packet. At least a portion of the payload of the DSS transport packet may be aligned with at least a portion of the payload portion of the DVB transport packet.

    摘要翻译： 用于将DSS传输流转换为DVB传输流的方法和系统的方面包括至少将DSS传输分组的前缀部分和有效载荷部分封装到DVB传输分组的头部部分和有效载荷部分中。 可以将DSS传输分组的前缀部分和有效载荷部分的至少一部分映射到DVB传输分组的报头部分和有效载荷部分的至少一部分。 DSS传输分组的有效载荷的至少一部分可以与DVB传输分组的有效载荷部分的至少一部分对准。

    Method and apparatus for implementing reduced memory mode for high-definition television
    7.
    发明授权
    Method and apparatus for implementing reduced memory mode for high-definition television 有权
    用于实现高分辨率电视的减少存储模式的方法和装置

    公开(公告)号：US07489729B2

    公开(公告)日：2009-02-10

    申请号：US11204595

    申请日：2005-08-15

    申请人： Sherman Xuemin Chen ,  Jason Demas ,  Sandeep Bhatia

    发明人： Sherman Xuemin Chen ,  Jason Demas ,  Sandeep Bhatia

    IPC分类号： H04N7/12

    CPC分类号： H04N19/90 ,  H04N19/126 ,  H04N19/159 ,  H04N19/162 ,  H04N19/172 ,  H04N19/174 ,  H04N19/428 ,  H04N19/61

    摘要： A method and apparatus are provided for implementing an enhanced reduced memory mode (RMM) of decoding HDTV MPEG-2 video stream. In one instance, the RMM mode is adaptively enabled with up/down conversion by using the picture-type information. In another instance, the RMM mode is provided by performing anchor-frame compression/decompression by using adaptive DPCM technique with picture-type information. The quantization (PCM) tables are generated using the Lloyd algorithm. Further, the predictor for each pixel is determined by a use of the Graham rule.

    摘要翻译： 提供了一种用于实现解码HDTV MPEG-2视频流的增强减少存储模式（RMM）的方法和装置。 在一种情况下，RMM模式通过使用图片类型信息自适应地启用上/下转换。 在另一种情况下，通过使用具有图片类型信息的自适应DPCM技术来执行锚帧压缩/解压缩来提供RMM模式。 使用劳埃德算法生成量化（PCM）表。 此外，通过使用Graham规则来确定每个像素的预测器。

    Apparatus and method of seamless switching between a live DTV decoding and a PVR playback
    9.
    发明授权
    Apparatus and method of seamless switching between a live DTV decoding and a PVR playback 失效
    实时DTV解码和PVR播放之间的无缝切换的装置和方法

    公开(公告)号：US07174085B2

    公开(公告)日：2007-02-06

    申请号：US09933231

    申请日：2001-08-20

    申请人： Jason Demas ,  Marcus Kellerman ,  Francis Cheung ,  Sherman Xuemin Chen

    发明人： Jason Demas ,  Marcus Kellerman ,  Francis Cheung ,  Sherman Xuemin Chen

    IPC分类号： H04N5/781 ,  H04N5/76 ,  H04N5/915

    CPC分类号： H04N9/87 ,  H04N7/24 ,  H04N21/4147 ,  H04N21/42661 ,  H04N21/42692 ,  H04N21/4305 ,  H04N21/4333 ,  H04N21/4334 ,  H04N21/4384 ,  H04N21/44004

    摘要： Methods and apparatus for switching between a live video decoding and a recorded playback in a digital video and recording system. A received video data stream is transmitted to a first-in first-out video decoder buffer without first looping the video data stream through a playback buffer. The video data stream is transmitted from the video decoder buffer to a video decoder. If a “pause” command is received, the video data stream is transmitted to a first-in first-out playback buffer, while continuing to transmit the video data stream to the video decoder buffer. Transmission of the video data stream to the video decoder buffer is halted when the video decoder buffer fills up. The last byte of the video data stream that was transmitted to the video decoder buffer is marked. If a “play” command is received, the video data stored in the video decoder buffer is transmitted to the video decoder. The video data stored in the playback buffer is transmitted to the video decoder buffer starting at a point immediately after the data element that was marked previously.

    摘要翻译： 用于在实时视频解码和数字视频和记录系统中的记录回放之间进行切换的方法和装置。 接收到的视频数据流被发送到先进先出的视频解码器缓冲器，而不用先通过重放缓冲器循环视频数据流。 视频数据流从视频解码器缓冲器发送到视频解码器。 如果接收到“暂停”命令，则将视频数据流发送到先进先出播放缓冲器，同时继续将视频数据流发送到视频解码器缓冲器。 当视频解码器缓冲器填满时，将视频数据流传输到视频解码器缓冲器。 发送到视频解码器缓冲器的视频数据流的最后一个字节被标记。 如果接收到“播放”命令，则将存储在视频解码器缓冲器中的视频数据发送到视频解码器。 存储在回放缓冲器中的视频数据从紧接在之前标记的数据元素之后的点开始被发送到视频解码器缓冲器。