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公开(公告)号：US20060039471A1
公开(公告)日：2006-02-23
申请号：US11112531
申请日：2005-04-22
申请人： Gokce Dane , Khaled El-Maleh , Yen-Chi Lee
发明人： Gokce Dane , Khaled El-Maleh , Yen-Chi Lee
CPC分类号： H04N19/176 , H04N19/132 , H04N19/172 , H04N19/46 , H04N19/51 , H04N19/513 , H04N19/587 , H04N19/61
摘要： The disclosure is directed to techniques for encoder-assisted adaptive interpolation of video frames. According to the disclosed techniques, an encoder generates information to assist a decoder in interpolation of a skipped video frame, i.e., an S frame. The information permits the decoder to reduce visual artifacts in the interpolated frame and thereby achieve improved visual quality. The information may include interpolation equation labels that identify selected interpolation equations to be used by the decoder for individual video blocks. As an option, to conserve bandwidth, the equation labels may be transmitted for only selected video blocks that meet a criterion for encoder-assisted interpolation. Other video blocks without equation labels may be interpolated according to a default interpolation technique.
摘要翻译： 本公开涉及视频帧的编码器辅助自适应插值技术。 根据所公开的技术，编码器生成信息以帮助解码器插入跳过的视频帧，即S帧。 该信息允许解码器减少内插帧中的视觉伪影，从而实现改善的视觉质量。 该信息可以包括识别用于各个视频块的由解码器使用的所选内插方程的内插方程标签。 作为选择，为了节省带宽，可以仅针对满足编码器辅助插值的准则的所选择的视频块来发送等式标签。 没有等式标签的其他视频块可以根据默认内插技术进行内插。
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公开(公告)号：US11181555B2
公开(公告)日：2021-11-23
申请号：US16391339
申请日：2019-04-23
申请人： Fu-Te Yuan , Yen-Chi Lee , Meng-Huang Lai
发明人： Fu-Te Yuan , Yen-Chi Lee , Meng-Huang Lai
IPC分类号： G01R15/18
摘要： A current sensing method and a current sensor are provided. The current sensing method includes the steps of: exciting a magnetic core to generate at least one pair of regions having opposite magnetization directions in the magnetic core; providing a current to pass through a sensing region of the magnetic core, so that the magnetic core correspondingly generates a magnetic field change; and sensing the magnetic field change of the magnetic core by a pickup coil wound around the magnetic core to output an output signal corresponding to the current.
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公开(公告)号：US08724697B2
公开(公告)日：2014-05-13
申请号：US12239196
申请日：2008-09-26
申请人： Yen-Chi Lee , Yiliang Bao
发明人： Yen-Chi Lee , Yiliang Bao
摘要： An apparatus performs efficient coding techniques to more efficiently locate motion vector data within neighboring video data units. The apparatus comprises a motion vector (MV) location unit that includes a look-up table (LUT), where the MV location unit obtains video data defining a plurality of video data units and processes the plurality of video data units. The apparatus further includes a geometric resolution unit that determines, while processing a current one of the plurality of video data units, which of the plurality of video data units neighbor the current video data unit. The MV location unit then accesses, for each of the neighboring video data units, the LUT to determine a location of a motion vector within a section of the video data to which the neighboring video data unit is associated.
摘要翻译： 一种装置执行有效的编码技术以更有效地定位相邻视频数据单元内的运动矢量数据。 该装置包括运动矢量（MV）位置单元，其包括查找表（LUT），其中MV位置单元获取定义多个视频数据单元的视频数据，并处理多个视频数据单元。 该装置还包括几何分辨单元，其在处理多个视频数据单元中的当前一个视频数据单元时，确定多个视频数据单元中的哪一个与当前视频数据单元相邻。 MV位置单元然后对于每个相邻视频数据单元访问LUT以确定相邻视频数据单元所关联的视频数据的一部分内的运动矢量的位置。
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公开(公告)号：US08660176B2
公开(公告)日：2014-02-25
申请号：US12239031
申请日：2008-09-26
申请人： Yen-Chi Lee , Yiliang Bao
发明人： Yen-Chi Lee , Yiliang Bao
CPC分类号： H04N19/42 , H04N19/112 , H04N19/137 , H04N19/16 , H04N19/174 , H04N19/176 , H04N19/44 , H04N19/593 , H04N19/61
摘要： An apparatus performs efficient coding techniques to more efficiently resolve geometric relationships between video data units and thereby determine neighboring video data units for a current video data unit. The apparatus comprises a geometric resolution unit that obtains video data defining a plurality of video data units, and determines, for the current one of the plurality of video data units to be processed, a partition width and a video unit number of the current video data unit. The geometric resolution unit accesses, using the determined partition width and video unit number, a plurality of look-up tables (LUTs) to output one or more indices identifying one or more of the plurality of video data units that neighbor the current video data unit.
摘要翻译： 一种装置执行有效的编码技术以更有效地解决视频数据单元之间的几何关系，从而确定当前视频数据单元的相邻视频数据单元。 该装置包括几何分辨单元，其获取定义多个视频数据单元的视频数据，并且对于要处理的多个视频数据单元中的当前一个视频数据单元，确定当前视频数据的分区宽度和视频单元数 单元。 几何分辨率单元使用确定的分区宽度和视频单元号来访问多个查找表（LUT），以输出识别与当前视频数据单元相邻的多个视频数据单元中的一个或多个的一个或多个索引 。
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公开(公告)号：US08514711B2
公开(公告)日：2013-08-20
申请号：US11454475
申请日：2006-06-15
IPC分类号： H04L1/00
CPC分类号： H04N21/6181 , H04N19/895 , H04N21/2662 , H04N21/6131 , H04N21/6473 , H04N21/64776 , H04N21/6583
摘要： 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.
摘要翻译： 本公开涉及反向链路下层辅助视频错误控制。 一种方法可以对视频数据进行编码，形成具有编码视频数据的分组，并且通过无线信道将数据包发送到接入网络。 介质访问控制（MAC）层可以从接入网络接收否定的确认（NAK）。 该方法可以确定所接收的NAK是否与包含视频数据的分组相关联。 如果接收到的NAK与包含视频数据的分组相关联，则该方法可以执行错误控制。
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公开(公告)号：US20120050452A1
公开(公告)日：2012-03-01
申请号：US13287948
申请日：2011-11-02
IPC分类号： H04N7/14
CPC分类号： H04N7/147 , H04N2007/145
摘要： The disclosure is directed to techniques for picture-in-picture (PIP) processing for video telephony (VT). According to the disclosed techniques, a local video communication device transmits PIP information to a remote video communication device. Using the PIP information, the remote video communication device applies preferential encoding to non-PIP regions of video transmitted to the local video communication device.
摘要翻译： 本公开涉及用于视频电话（VT）的画中画（PIP）处理技术。 根据所公开的技术，本地视频通信设备将PIP信息发送到远程视频通信设备。 使用PIP信息，远程视频通信设备对发送到本地视频通信设备的视频的非PIP区域应用优先编码。
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公开(公告)号：US08019175B2
公开(公告)日：2011-09-13
申请号：US11183072
申请日：2005-07-15
CPC分类号： H04N21/4728 , H04N7/147 , H04N19/124 , H04N19/17 , H04N21/234345 , H04N21/4621
摘要： 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.
摘要翻译： 本公开涉及用于视频电话（VT）应用的感兴趣区域（ROI）处理的技术。 根据所公开的技术，接收者设备定义由发送者设备发送的视频信息的ROI信息，即远端视频信息。 收件人设备将ROI信息发送给发送者设备。 使用由收件人设备发送的ROI信息，发送者设备对视频场景内的ROI应用优先编码。 以这种方式，接收方设备能够远程地控制发送者设备对远端视频信息的ROI编码。
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公开(公告)号：US20090213938A1
公开(公告)日：2009-08-27
申请号：US12170991
申请日：2008-07-10
申请人： Yen-Chi Lee , Min Dai , Chia-Yuan Teng
发明人： Yen-Chi Lee , Min Dai , Chia-Yuan Teng
IPC分类号： H04N11/02
CPC分类号： H04N19/68 , H04N19/105 , H04N19/134 , H04N19/174 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/70 , H04N19/895
摘要： A video decoder performs a sequential error handling process to detect and conceal errors within a corrupted data segment of video data units. The decoder sequentially decodes a current data unit. Upon detecting an error, the decoder sets an error flag and resynchronizes decoding at the start of the next unit. If the error flag is set, the video decoder identifies the end of the corrupted data segment based on the start of the later unit. The decoder conceals data between the start of the current unit and the end of the corrupted data segment. If the error flag is not set, the decoder may decode the remainder of the current unit and proceed to decode the next available unit without performing error handling and concealment for the current unit. The decoder also may address reference unit mismatches caused by lost video data units.
摘要翻译： 视频解码器执行顺序错误处理过程以检测和隐藏视频数据单元的损坏的数据段内的错误。 解码器对当前数据单元进行顺序解码。 在检测到错误时，解码器设置错误标志并在下一个单元的开始重新同步解码。 如果错误标志被设置，则视频解码器基于稍后单元的开始来识别损坏的数据段的结束。 解码器隐藏当前单元的开始和损坏的数据段的结束之间的数据。 如果错误标志未设置，则解码器可以对当前单元的剩余部分进行解码，并且继续对下一个可用单元进行解码，而不对当前单元执行错误处理和隐藏。 解码器还可以解决由丢失的视频数据单元引起的参考单元不匹配。
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公开(公告)号：US20070097257A1
公开(公告)日：2007-05-03
申请号：US11314428
申请日：2005-12-20
申请人： Khaled El-Maleh , Ming-Chang Tsai , Yen-Chi Lee
发明人： Khaled El-Maleh , Ming-Chang Tsai , Yen-Chi Lee
CPC分类号： H04N21/23406 , H04N19/115 , H04N19/124 , H04N19/132 , H04N19/147 , H04N19/152 , H04N19/169 , H04N19/172 , H04N19/184 , H04N19/188 , H04N19/194 , H04N19/196 , H04N19/198 , H04N19/587 , H04N19/61 , H04N21/2368 , H04N21/2381 , H04N21/2662 , H04N21/4341 , H04N21/44004 , H04N21/6125 , H04N21/6131 , H04N21/6175 , H04N21/64322 , H04N21/6437
摘要： The disclosure relates to techniques for video source rate control for video telephony (VT) applications. The source video encoding rate may controlled using a dual-buffer based estimation of a frame budget that defines a number of encoding bits available for a frame of the video. The dual-buffer based estimation technique may track the fullness of a physical video buffer and the fullness of the virtual video buffer. The source video encoding rate is then controlled based on the resulting frame budget. The contents of the virtual buffer depend on constraints imposed by a target encoding rate, while the contents of the physical buffer depend on constraints imposed by varying channel conditions. Consideration of physical video buffer fullness permits the video source rate control technique to be channel-adaptive. Consideration of virtual video buffer fullness permits the video source rate control technique to avoid encoding excessive video that could overwhelm the channel.
摘要翻译： 本公开涉及用于视频电话（VT）应用的视频源速率控制的技术。 可以使用定义可用于视频帧的编码比特数的帧预算的基于双缓冲器的估计来控制源视频编码率。 基于双缓冲器的估计技术可以跟踪物理视频缓冲器的丰满度和虚拟视频缓冲器的丰满度。 然后基于所得到的帧预算来控制源视频编码速率。 虚拟缓冲器的内容取决于由目标编码速率施加的约束，而物理缓冲器的内容取决于由变化的信道条件施加的约束。 考虑物理视频缓冲器的丰满度使得视频源速率控制技术成为频道自适应的。 考虑虚拟视频缓冲区丰满度允许视频源速率控制技术避免编码可能压倒频道的过多视频。
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公开(公告)号：US20070040898A1
公开(公告)日：2007-02-22
申请号：US11208176
申请日：2005-08-19
申请人： Yen-Chi Lee , Khaled El-Maleh , Ming-Chang Tsai
发明人： Yen-Chi Lee , Khaled El-Maleh , Ming-Chang Tsai
IPC分类号： H04N7/14
CPC分类号： H04N7/147 , H04N2007/145
摘要： The disclosure is directed to techniques for picture-in-picture (PIP) processing for video telephony (VT). According to the disclosed techniques, a local video communication device transmits PIP information to a remote video communication device. Using the PIP information, the remote video communication device applies preferential encoding to non-PIP regions of video transmitted to the local video communication device.
摘要翻译： 本公开涉及用于视频电话（VT）的画中画（PIP）处理技术。 根据所公开的技术，本地视频通信设备将PIP信息发送到远程视频通信设备。 使用PIP信息，远程视频通信设备对发送到本地视频通信设备的视频的非PIP区域应用优先编码。
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