专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明申请

US20100027717A1 Equalization of OFDM Signals Based on Time and Then Frequency Interpolation 审中-公开
标题翻译：基于时间和频率插值的OFDM信号均衡
公开(公告)号：US20100027717A1
公开(公告)日：2010-02-04
申请号：US11831364
申请日：2007-07-31
申请人： Lekun Lin , Sheng Lin , Kai Xie
发明人： Lekun Lin , Sheng Lin , Kai Xie
IPC分类号： H04L27/06
CPC分类号： H04L25/022 , H04L25/0232
摘要： Two dimensional interpolation techniques are used to compensate for time-varying channel gain H in an OFDM system. The channel gain can be reasonably estimated at various times and at various frequencies due, for example, to the use of pilot tones. These channel estimates are used to estimate the channel gain at other times and/or frequencies by two-dimensional interpolation, interpolating first with respect to time (e.g., with respect to a symbol index s) and then with respect to frequency (e.g., with respect to a sub-carrier index c).
摘要翻译：二维内插技术用于补偿OFDM系统中的时变信道增益H. 由于例如使用导频音，可以在各种时间和各种频率下合理地估计信道增益。这些信道估计用于通过二维插值来估计其他时间和/或频率处的信道增益，首先相对于时间（例如，相对于符号索引s）然后相对于频率进行内插（例如，与关于副载体索引c）。

12. 发明授权

US09672636B2 Texture masking for video quality measurement 有权
公开(公告)号：US09672636B2
公开(公告)日：2017-06-06
申请号：US14358289
申请日：2012-04-23
申请人： Fan Zhang , Kai Xie , Wenfei Jiang , Zhibo Chen
发明人： Fan Zhang , Kai Xie , Wenfei Jiang , Zhibo Chen
IPC分类号： G06T7/40 , G06T7/00 , H04N19/154 , H04N19/172 , H04N19/117 , H04N19/14 , H04N19/86 , G06T7/13 , G06T7/44 , H04N19/162
CPC分类号： G06T7/40 , G06T7/0002 , G06T7/13 , G06T7/44 , G06T2207/10016 , G06T2207/20028 , G06T2207/30168 , H04N19/117 , H04N19/14 , H04N19/154 , H04N19/162 , H04N19/172 , H04N19/865
摘要： A particular implementation decomposes an image into a structure component and a texture component. An edge strength map is calculated for the structure component, and a texture strength map is calculated for the texture component. Using the edge strength and the texture strength, texture masking weights are calculated. The stronger the texture strength is, or the weaker the edge strength is, the more distortion can be tolerated by human eyes, and thus, the smaller the texture masking weight is. The local distortions are then weighted by the texture masking weights to generate an overall distortion level or an overall quality metric.

13. 发明申请

US20140301486A1 VIDEO QUALITY ASSESSMENT CONSIDERING SCENE CUT ARTIFACTS 审中-公开
标题翻译：视频质量评估考虑场景剪裁艺术
公开(公告)号：US20140301486A1
公开(公告)日：2014-10-09
申请号：US14355975
申请日：2011-11-25
申请人： Ning Liao , Zhibo Chen , Fan Zhang , Kai Xie
发明人： Ning Liao , Zhibo Chen , Fan Zhang , Kai Xie
IPC分类号： H04N19/86 , H04N19/89 , H04N19/87
CPC分类号： H04N19/48 , H04N19/154 , H04N19/87 , H04N19/895
摘要： A particular implementation detects scene cut artifacts in a bitstream without reconstructing the video. A scene cut artifact is usually observed in the decoded video (1) when a scene cut picture in the original video is partially received or (2) when a picture refers to a lost scene cut picture in the original video. To detect scene cut artifacts, candidate scene cut pictures are first selected and scene cut artifact detection is then performed on the candidate pictures. When a block is determined to have a scene cut artifact, a lowest quality level is assigned to the block.
摘要翻译：特定的实现检测比特流中的场景切割伪像，而不重建视频。通常在解码视频（1）中观察到原始视频中的场景切换图像被部分接收或（2）当图片参考原始视频中的丢失的场景切换图像时，场景切割伪影。为了检测场景切割伪像，首先选择候选场景切割图像，然后对候选图像执行场景切割伪影检测。当确定块具有场景切割伪影时，将最低质量级别分配给块。

14. 发明申请

US20140286441A1 VIDEO QUALITY MEASUREMENT 审中-公开
标题翻译：视频质量测量
公开(公告)号：US20140286441A1
公开(公告)日：2014-09-25
申请号：US14353351
申请日：2011-11-24
申请人： Fan Zhang , Ning Liao , Kai Xie , Zhibo Chen
发明人： Fan Zhang , Ning Liao , Kai Xie , Zhibo Chen
IPC分类号： H04N19/89
CPC分类号： H04N19/00933 , H04N17/004 , H04N19/895
摘要： A particular implementation receives a bitstream and derives parameters from the bitstream. The parameters include quantization parameters, content unpredictability parameters, ratios of lost blocks, ratios of propagated blocks, error concealment distances, motion vectors, durations of freezing, and frame rates. Using these parameters, a compression distortion factor, a slicing distortion factor, and a freezing distortion factor are estimated respectively for distortions resulting from video compression, a slicing mode error concealment, and a freezing slicing mode error concealment. The distortion factors are then mapped to a composite video quality score. For applications with limited computational power, the estimation of distortion factors can be simplified. In particular, the compression distortion factor, the slicing distortion factor, and the freezing distortion factor can be predicted from quantization parameters, ratios of lost blocks, and durations of freezing, respectively.
摘要翻译：特定实现接收比特流并从比特流导出参数。参数包括量化参数，内容不可预测性参数，丢失块的比率，传播块的比率，错误隐藏距离，运动向量，冻结持续时间和帧速率。分别使用这些参数来估计压缩失真因子，切片失真因子和冻结失真因子，用于由视频压缩，切片模式错误隐藏和冷冻切片模式错误隐藏产生的失真。然后将失真因子映射到复合视频质量得分。对于具有有限计算能力的应用，可以简化失真因子的估计。具体地，压缩失真因子，切片失真因子和冻结失真因子可以分别从量化参数，丢失块的比率和冻结时间预测。

15. 发明申请

US20120263046A1 Method And Apparatus For Determining Uplink Noise Power In A Wireless Communication System 有权
标题翻译：用于确定无线通信系统中上行噪声功率的方法和装置
公开(公告)号：US20120263046A1
公开(公告)日：2012-10-18
申请号：US13084901
申请日：2011-04-12
申请人： Jerry Zhenyu Wang , Kumud Kumar Sanwal , Jonqyin Sun , Kai Xie , Susan M. Miller , Marc E. Shelton
发明人： Jerry Zhenyu Wang , Kumud Kumar Sanwal , Jonqyin Sun , Kai Xie , Susan M. Miller , Marc E. Shelton
IPC分类号： H04W24/00 , H04B7/216
CPC分类号： H04B1/7097
摘要： In one embodiment, the method includes receiving signals from user equipment, despreading the received signals by applying an unused channelization code, and determining the uplink noise power based on output of the despreading.
摘要翻译：在一个实施例中，该方法包括从用户设备接收信号，通过应用未使用的信道化码来解扩接收的信号，以及基于解扩的输出来确定上行链路噪声功率。

16. 发明申请

US20100142649A1 SYSTEM AND METHOD OF GENERATING SOFT BITS 失效
标题翻译：系统和产生软件的方法
公开(公告)号：US20100142649A1
公开(公告)日：2010-06-10
申请号：US12328359
申请日：2008-12-04
申请人： Kai Xie , Sattar Elyasi
发明人： Kai Xie , Sattar Elyasi
IPC分类号： H04B1/10 , H03D1/24
CPC分类号： H04L25/067 , H04L27/38
摘要： A receiver receives a received signal from a communication link, the received signal comprising a stream of symbols modulated onto a carrier, each of the stream symbols selected from a constellation of symbols to represent a plurality of encoded data bits. The receiver comprises a demodulator to produce a stream of received symbols derived from the received signal; a channel decoder to produce a received stream of data bits derived from the stream of received symbols; and a memory device to store information related to the plurality of symbols in the constellation. For each of the symbols in the stream of received symbols, the demodulator: determines which of the plurality of symbols in the constellation is a respective closest symbol to that received symbol; identifies a respective nearest neighbor symbol for each data bit represented by the closest symbol for that received symbol based on the information stored in the memory device; and for each data bit represented by the respective closest symbol for that received symbol, subtracts the distance between the respective closest symbol and that received symbol from the distance between the respective nearest neighbor symbol and that received symbol in order to produce respective soft bits for that received symbol.
摘要翻译：接收机从通信链路接收接收到的信号，所接收的信号包括调制到载波上的符号流，每个流符号从符号星座中选出以表示多个编码数据位。接收机包括解调器，用于产生从接收信号导出的接收符号流; 信道解码器，用于产生从接收到的符号流导出的接收的数据比特流; 以及存储装置，用于存储与星座中的多个符号有关的信息。对于接收符号流中的每个符号，解调器：确定星座中的多个符号中的哪个符号是与该接收符号相应的最近的符号; 基于存储在存储装置中的信息，识别由该接收符号的最近符号表示的每个数据位的相应最近邻符号; 并且对于由该接收符号的相应最近的符号表示的每个数据位，从相应的最近邻符号和该接收符号之间的距离中减去相应的最近符号与该接收符号之间的距离，以产生相应的最终相邻符号与该接收符号的相应软比特收到的符号。

17. 发明申请

US20100138869A1 METHOD AND DEVICE FOR GENERATING ELECTRONIC SERVICE GUIDE 审中-公开
标题翻译：用于生成电子服务指南的方法和装置
公开(公告)号：US20100138869A1
公开(公告)日：2010-06-03
申请号：US12451512
申请日：2007-05-21
申请人： Jun Li , Si Nan Shangguan , Yun Tao Shi , Kai Xie
发明人： Jun Li , Si Nan Shangguan , Yun Tao Shi , Kai Xie
IPC分类号： H04N5/445
CPC分类号： H04H60/51 , H04H60/39 , H04N21/25841 , H04N21/26283 , H04N21/44227
摘要： A method for generating Electronic Service Guide, comprising steps of: obtaining user information from a user in a digital video broadcasting network; generating a first Electronic Service Guide as a function of the user information, wherein the first Electronic Service Guide lists services provided by the digital video broadcasting network and associated with the user information; and sending the first Electronic Service Guide to the user.
摘要翻译：一种用于产生电子服务指南的方法，包括以下步骤：从数字视频广播网络中的用户获取用户信息; 根据用户信息生成第一电子服务指南，其中第一电子服务指南列出由数字视频广播网络提供并与用户信息相关联的服务; 并向用户发送第一个电子服务指南。

18. 发明申请

US20090016447A1 Method and Apparatus for Packet Loss Detection and Virtual Packet Generation at SVC Decoders 有权
标题翻译： SVC解码器丢包检测和虚包分组生成方法及装置
公开(公告)号：US20090016447A1
公开(公告)日：2009-01-15
申请号：US12224239
申请日：2007-02-14
申请人： Ying Chen , Kai Xie , Purvin Bibhas Pandit
发明人： Ying Chen , Kai Xie , Purvin Bibhas Pandit
IPC分类号： H04N7/64
CPC分类号： H04N19/895 , H04N19/30 , H04N19/46 , H04N19/61 , H04N19/70 , H04N19/89
摘要： Packetized video data with a base-layer and at least one enhancement-layer organized in a GOP structure may contain packet loss errors. A method for detecting such errors comprises the steps of reading header information relating to a layer, generating a scheme or selecting a predefined scheme according to said header information, the scheme comprising display order number, number of reference frames and temporal level for the frames of the respective layer, extracting from received video data frames display order number, number of reference frames and temporal level parameters, and detecting that one or more frames or packets are missing, wherein the received parameters are compared with the parameters of expected frames according to said scheme and a missing packet or frame is determined by a mismatch between received and expected parameters.
摘要翻译：具有基层和以GOP结构组织的至少一个增强层的分组化视频数据可能包含分组丢失错误。用于检测这种错误的方法包括以下步骤：根据所述标题信息来读取与层有关的标题信息，生成方案或选择预定义方案，所述方案包括显示顺序号，参考帧的数量和帧的时间级别从接收到的视频数据帧中提取的各层显示订单号，参考帧数和时间级参数，并且检测到丢失了一个或多个帧或分组，其中接收的参数根据所述预期帧与参考帧的参数进行比较方案和丢失的分组或帧由接收参数和预期参数之间的不匹配来确定。

19. 发明申请

US20050176763A1 3-Thia-4-arylquinolin-2-one potassium channel modulators 有权
标题翻译： 3-硫杂-4-芳基喹啉-2-酮钾通道调节剂
公开(公告)号：US20050176763A1
公开(公告)日：2005-08-11
申请号：US10964079
申请日：2004-10-13
申请人： Kenneth Boy , Piyasena Hewawasam , Sing-Yuen Sit , Kai Xie
发明人： Kenneth Boy , Piyasena Hewawasam , Sing-Yuen Sit , Kai Xie
IPC分类号： A61K31/4709 , C07D215/36 , C07D401/12 , C07D405/12 , C07D417/12 , C07D41/02
CPC分类号： C04B35/632 , C07D215/36 , C07D401/12 , C07D405/12 , C07D417/12
摘要： This invention describes compounds of Formula (I) which are modulators of potassium channels and are useful for treating conditions affected by abnormal potassium channel activity including erectile dysfunction and irritable bowel syndrome.
摘要翻译：本发明描述了作为钾通道调节剂的式（I）化合物，并且可用于治疗受异常钾通道活性（包括勃起功能障碍和肠易激综合征）影响的病症。

20. 发明申请

US20050131032A1 (Oxime)carbamoyl fatty acid amide hydrolase inhibitors 审中-公开
公开(公告)号：US20050131032A1
公开(公告)日：2005-06-16
申请号：US11039516
申请日：2005-01-19
申请人： Sing-Yuen Sit , Kai Xie , Hongfeng Deng
发明人： Sing-Yuen Sit , Kai Xie , Hongfeng Deng
IPC分类号： C07D295/08 , A61K31/27 , A61K31/343 , A61K31/404 , A61K31/4402 , A61K31/4406 , A61K31/4409 , A61K31/443 , A61K31/4439 , A61K31/444 , A61K31/47 , A61K31/472 , A61K31/5375 , A61P1/08 , A61P1/14 , A61P3/04 , A61P9/00 , A61P25/02 , A61P25/04 , A61P25/14 , A61P25/22 , A61P25/28 , A61P27/06 , A61P29/02 , A61P43/00 , C07C271/26 , C07C271/28 , C07C271/48 , C07C271/58 , C07C271/60 , C07D209/08 , C07D209/40 , C07D213/53 , C07D213/64 , C07D213/643 , C07D213/65 , C07D213/68 , C07D215/20 , C07D215/22 , C07D217/02 , C07D295/092 , C07D307/91 , C07D401/12 , C07D405/12 , A61K31/325 , C07D213/72
CPC分类号： C07D213/53 , C07C271/28 , C07C271/48 , C07C271/58 , C07C271/60 , C07D209/40 , C07D213/643 , C07D213/65 , C07D215/22 , C07D217/02 , C07D295/088 , C07D307/91 , C07D405/12
摘要： The present invention relates to novel oxime carbamyl derivatives and pharmaceutical compositions comprising said derivatives which inhibit fatty acid amide hydrolase. These pharmaceutical compositions are useful for the treatment of conditions which can be effected by inhibiting fatty acid amide hydrolase including, but not limited to, neuropathic pain, emesis, anxiety, altering feeding behaviors, movement disorders, glaucoma, brain injury, and cardiovascular disease.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式