公开(公告)号：US07664185B2

公开(公告)日：2010-02-16

申请号：US10978277

申请日：2004-10-29

申请人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

发明人： Ya-Qin Zhang ,  Shipeng Li ,  Feng Wu ,  Rong Yan

IPC分类号： H04N7/18

CPC分类号： H04N19/29 ,  H04N19/34 ,  H04N19/68 ,  H04N19/89

摘要： A scalable layered video coding scheme that encodes video data frames into multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video, adds error resilience to the enhancement layer. Unique resynchronization marks are inserted into the enhancement layer bitstream in headers associated with each video packet, headers associated with each bit plane, and headers associated with each video-of-plane (VOP) segment. Following transmission of the enhancement layer bitstream, the decoder tries to detect errors in the packets. Upon detection, the decoder seeks forward in the bitstream for the next known resynchronization mark. Once this mark is found, the decoder is able to begin decoding the next video packet. With the addition of many resynchronization marks within each frame, the decoder can recover very quickly and with minimal data loss in the event of a packet loss or channel error in the received enhancement layer bitstream. The video coding scheme also facilitates redundant encoding of header information from the higher-level VOP header down into lower level bit plane headers and video packet headers. Header extension codes are added to the bit plane and video packet headers to identify whether the redundant data is included.

摘要翻译： 将视频数据帧编码成多层的可分级的分层视频编码方案，包括具有越来越高质量视频的较低质量视频和多个增强层的基本层，向增强层增加了错误恢复能力。 将独特的再同步标记插入到与每个视频分组相关联的报头中的增强层比特流中，与每个位平面相关联的报头以及与每个视频平面（VOP）段相关联的报头。 在传输增强层比特流之后，解码器尝试检测分组中的错误。 在检测到时，解码器在比特流中向前寻找下一个已知的再同步标记。 一旦找到该标记，解码器就可以开始对下一个视频数据包进行解码。 通过在每个帧内添加许多重新同步标记，解码器可以在接收到的增强层比特流中的分组丢失或信道错误的情况下非常快速地恢复并且具有最小的数据丢失。 视频编码方案还有助于将标题信息从较高级别的VOP头部冗余编码到较低级位平面头部和视频分组头部。 标题扩展码被添加到位平面和视频分组报头，以标识是否包括冗余数据。

公开(公告)号：US07583730B2

公开(公告)日：2009-09-01

申请号：US11070905

申请日：2005-03-03

申请人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang ,  Bing Zeng ,  Xiaoyan Sun

发明人： Feng Wu ,  Shipeng Li ,  Ya-Qin Zhang ,  Bing Zeng ,  Xiaoyan Sun

IPC分类号： H04N7/12

CPC分类号： H04N19/34 ,  H04N19/51

摘要： A motion-compensated video encoding scheme employs progressive fine-granularity layered coding to encode macroblocks of video data into frames having multiple layers, including a base layer of comparatively low quality video and multiple enhancement layers of increasingly higher quality video. Some of the enhancement layers in a current frame are predicted from different quality layers in reference frames. The video encoding scheme estimates drifting errors during the encoding and chooses a coding mode for each macroblock in the enhancement layer to maximize high coding efficiency while minimizing drifting errors.

公开(公告)号：US20080212181A1

公开(公告)日：2008-09-04

申请号：US11915390

申请日：2006-06-07

申请人： Feng Wu

发明人： Feng Wu

IPC分类号： G02B5/124 ,  B32B38/10 ,  B32B3/10 ,  B29C59/02 ,  B44C1/22

CPC分类号： B29D11/00625 ,  B29C59/022 ,  B29C2059/023 ,  B29D11/00605 ,  B29D11/0074 ,  G02B5/124 ,  G09F13/16 ,  Y10T156/11 ,  Y10T428/24802

摘要： A retroreflective sheet structure (10) comprising a transparent layer (20) having a front light-receiving surface (30) and a rear retroreflecting surface (32). Light incident on the front surface (30) will pass through the layer (20), impinge on the rear retroreflective surface (32) and reflect back out through the front surface (30) in a predetermined direction. An identifying indicia (44) is chosen and then formed on the retroreflecting surface (32). This indicia (44) can be used for identification purposes, even years after an end product incorporating the reflective sheet structure (10) has been out in the field.

摘要翻译： 一种包括具有前光接收表面（30）和后回射表面（32）的透明层（20）的回射片结构（10）。 入射在前表面30上的光将穿过层20，撞击在后向后反射表面32上，并沿预定方向通过前表面30反射回。 选择识别标记（44），然后形成在回射表面（32）上。 甚至在整合了反射片结构（10）的最终产品已经在现场出来之后的几年中，该标记（44）可以用于识别目的。

公开(公告)号：US20080123983A1

公开(公告)日：2008-05-29

申请号：US11563629

申请日：2006-11-27

申请人： Ruiqin Xiong ,  Ji-Zheng Xu ,  Feng Wu

发明人： Ruiqin Xiong ,  Ji-Zheng Xu ,  Feng Wu

IPC分类号： G06K9/36

CPC分类号： H04N19/635

摘要： A non-dyadic spatial scalable wavelet transform may scale an original digital video frame or digital image at a non-dyadic ratio. The digital video frame or digital image is quantized to create a set of data representing the digital video frame or digital image. The set of data is then input to the non-dyadic spatial scalable wavelet transform. The non-dyadic spatial scalable wavelet transform may then transform the data associated with a first pixel to a high-pass coefficient and use the high-pass coefficient to transform the data associated with a second and third pixel to low-pass coefficients. The low-pass coefficients may then be converted to a digital image for viewing.

摘要翻译： 非二元空间可缩放小波变换可以以非二进制比例缩放原始数字视频帧或数字图像。 量化数字视频帧或数字图像以创建表示数字视频帧或数字图像的一组数据。 然后将该组数据输入到非二进制空间可缩放小波变换。 然后，非二元空间可缩放小波变换可以将与第一像素相关联的数据变换为高通系数，并使用高通系数将与第二和第三像素相关联的数据变换为低通系数。 然后可以将低通系数转换为数字图像以供观看。

公开(公告)号：US20080056354A1

公开(公告)日：2008-03-06

申请号：US11468253

申请日：2006-08-29

申请人： Xiaoyan Sun ,  Huifeng Shen ,  Feng Wu

发明人： Xiaoyan Sun ,  Huifeng Shen ,  Feng Wu

IPC分类号： H04N7/12

CPC分类号： H04N19/577 ,  H04N19/103 ,  H04N19/115 ,  H04N19/124 ,  H04N19/147 ,  H04N19/149 ,  H04N19/157 ,  H04N19/176 ,  H04N19/177 ,  H04N19/19 ,  H04N19/40 ,  H04N19/48 ,  H04N19/567

摘要： Transcoding hierarchical B-frames with rate-distortion optimization in the DCT domain is described. More particularly, and in one aspect, input media content is transcoded from an original bit rate to a reduced bit rate. The input media content includes multiple hierarchical bidirectional frames (“B-frames”), multiple intra-frames (I-frames), and multiple predictive frames (P-frames). Each B-frame is open-loop transcoded in view of the reduced bit rate by optimizing texture and motion rate-distortion in the DCT domain to generate a respective portion of transcoded media content. The transcoded media content, which includes transcoded B-frames, I-frames, and P-frames, is provided to a user for viewing.

摘要翻译： 描述了在DCT域中用码率失真优化代码转换分级B帧。 更具体地，并且在一个方面，将输入媒体内容从原始比特率转码为降低的比特率。 输入媒体内容包括多个分级双向帧（“B帧”），多个帧内（I帧）和多个预测帧（P帧）。 考虑到降低的比特率，通过优化DCT域中的纹理和运动速率失真来生成各代码转换的媒体内容的每个B帧是开环转码的。 将包含代码转换的B帧，I帧和P帧的代码转换的媒体内容提供给用户进行观看。

公开(公告)号：US20080008252A1

公开(公告)日：2008-01-10

申请号：US11483150

申请日：2006-07-07

申请人： Ji-Zheng Xu ,  Ruiqin Xiong ,  Feng Wu

发明人： Ji-Zheng Xu ,  Ruiqin Xiong ,  Feng Wu

IPC分类号： H04B1/66

CPC分类号： H04N19/59 ,  H04N19/33 ,  H04N19/61

摘要： Video data for a high resolution image unit is coded with regard to both a low resolution reference image unit and a high resolution reference image unit. In an example encoding implementation, both low pass information and high pass information of residue data for a current image are generated. In an example decoding implementation, a current image is reconstructed by synthesizing both low pass information and high pass information for the reconstructed image.

摘要翻译： 关于低分辨率参考图像单元和高分辨率参考图像单元的高分辨率图像单元的视频数据被编码。 在编码实现的示例中，生成当前图像的残差数据的低通信息和高通信息。 在解码实现的示例中，通过合成重建图像的低通信息和高通信息来重建当前图像。

公开(公告)号：US20070247856A1

公开(公告)日：2007-10-25

申请号：US11732965

申请日：2007-04-04

申请人： Shih Wang ,  Bok Lau ,  Feng Wu ,  Chin-Wang Tu ,  Chen-Ho Wu

发明人： Shih Wang ,  Bok Lau ,  Feng Wu ,  Chin-Wang Tu ,  Chen-Ho Wu

IPC分类号： F21V7/00

CPC分类号： F21V7/005 ,  F21V7/09 ,  F21W2131/103 ,  F21Y2115/10

摘要： A lighting unit that includes a light source and a reflector assembly upon which the light source is mounted. The reflector assembly includes a first reflector having a first curved reflective surface extending away from the light source, and a second reflector having a second curved reflective surface extending away from the light source. The first curved reflective surface faces and opposes the second curved reflective surface. The first curved reflective surface has a curvature that is different from that of the second curved reflective surface. The first and second curved reflective surfaces both preferably terminate in convexities that reduce the size of dark band areas of illumination.

摘要翻译： 一种照明单元，包括光源和安装有光源的反射器组件。 反射器组件包括具有远离光源延伸的第一弯曲反射表面的第一反射器和具有远离光源延伸的第二弯曲反射表面的第二反射器。 第一弯曲反射表面面对并与第二弯曲反射表面相对。 第一弯曲反射表面具有与第二弯曲反射表面不同的曲率。 第一和第二弯曲反射表面都优选以凸起的方式终止，这些凹凸减小了暗带的照明区域的尺寸。

公开(公告)号：US20070197256A1

公开(公告)日：2007-08-23

申请号：US11702278

申请日：2007-02-06

申请人： Kan Lu ,  Chongjun Jiang ,  Michael Chen ,  Bin Xu ,  Yiyan Tang ,  Huiyong Hong ,  Shuangi Wu ,  Feng Wu

发明人： Kan Lu ,  Chongjun Jiang ,  Michael Chen ,  Bin Xu ,  Yiyan Tang ,  Huiyong Hong ,  Shuangi Wu ,  Feng Wu

IPC分类号： H04B1/10 ,  H04M1/00

CPC分类号： H04B1/406

摘要： A wireless communication device and the method thereof are disclosed. The wireless communication device in accordance with the present invention includes an integrated protocol layer supporting a first communication protocol and a second communication protocol; a single transceiver operative to transmit and receive signals of said first and said second communication protocols.

摘要翻译： 公开了一种无线通信装置及其方法。 根据本发明的无线通信设备包括支持第一通信协议和第二通信协议的集成协议层; 单个收发器，用于发送和接收所述第一和所述第二通信协议的信号。

公开(公告)号：US07003035B2

公开(公告)日：2006-02-21

申请号：US10186284

申请日：2002-06-27

申请人： Alexandros Tourapis ,  Feng Wu ,  Shipeng Li

发明人： Alexandros Tourapis ,  Feng Wu ,  Shipeng Li

IPC分类号： H04N7/12

CPC分类号： H04N19/109 ,  H04N19/147 ,  H04N19/176 ,  H04N19/513 ,  H04N19/52 ,  H04N19/56 ,  H04N19/573 ,  H04N19/577

摘要： Video coding methods and apparatuses are provided that make use of various models and/or modes to significantly improve coding efficiency especially for high/complex motion sequences. The methods and apparatuses take advantage of the temporal and/or spatial correlations that may exist within portions of the frames, e.g., at the Macroblocks level, etc. The methods and apparatuses tend to significantly reduce the amount of data required for encoding motion information while retaining or even improving video image quality.

公开(公告)号：US20050202795A1

公开(公告)日：2005-09-15

申请号：US10422321

申请日：2003-04-24

申请人： YaFei Tian ,  Chenyang Yang ,  Feng Wu ,  Liang Zhang ,  Liang Li ,  Noi Banavong

发明人： YaFei Tian ,  Chenyang Yang ,  Feng Wu ,  Liang Zhang ,  Liang Li ,  Noi Banavong

IPC分类号： H04L27/00 ,  H04B1/16 ,  H04B1/06 ,  H04B7/00

CPC分类号： H04L27/00 ,  H04W4/18 ,  H04W56/00 ,  H04W88/06

摘要： A baseband process operating on a receiver in a communication system, such as an 802.15.4 communication system, is provided. The baseband process has a set of predefined reference signals, with each reference signal associated with a possible characteristic in the baseband signal. The baseband process receives a degraded baseband signal, and preprocesses the baseband signal to reduce or remove the effects of the degradation. The preprocessed baseband signal is correlated with reference signals from the set of predefined reference signals, and the reference signal with the best correlation is identified. By identifying the best correlating reference signal, the baseband process is able to identify a characteristic of the baseband signal. In one example of the baseband process, the baseband signal is preprocessed by auto-correlating the degraded baseband signal with a delayed version of the degraded baseband signal. The preprocessed baseband signal is then correlated against a set of sync reference signals to find a sync offset for the baseband signal. When synchronized with the baseband signal, the baseband process may be correlated against a set of symbol reference signals to decode sequential symbols in the baseband signal.

摘要翻译： 提供了在诸如802.15.4通信系统的通信系统中的接收机上操作的基带处理。 基带处理具有一组预定义的参考信号，每个参考信号与基带信号中的可能特性相关联。 基带处理接收降级的基带信号，并预处理基带信号以减少或消除降级的影响。 预处理的基带信号与来自预定参考信号的参考信号相关，并且识别具有最佳相关性的参考信号。 通过识别最佳相关参考信号，基带处理能够识别基带信号的特性。 在基带处理的一个示例中，通过将劣化的基带信号与降级的基带信号的延迟版本自相关来对基带信号进行预处理。 然后将预处理的基带信号与一组同步参考信号相关，以找到基带信号的同步偏移。 当与基带信号同步时，基带处理可以与一组符号参考信号相关，以对基带信号中的顺序符号进行解码。