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51. 发明授权

US07283076B1 Digital non-integer sample/hold implemented using virtual filtering 有权
标题翻译：使用虚拟过滤实现的数字非整数采样/保持
公开(公告)号：US07283076B1
公开(公告)日：2007-10-16
申请号：US11478275
申请日：2006-06-29
申请人： Lei Ding , John L. Melanson , Xaiofan Fei , Bruce Duewer
发明人： Lei Ding , John L. Melanson , Xaiofan Fei , Bruce Duewer
IPC分类号： H03M3/00
CPC分类号： H03H17/0685 , H03H17/0275 , H03H17/0614
摘要： A method and apparatus for implementing non-integer sample hold operations in a sigma-delta digital-to-analog converter system includes an interpolation filter, a polyphase filter circuit, and a modulator. The polyphase filter circuit is used to virtual upsample a digital input signal by a predetermined non-integer upsample ratio of a relatively large number. The polyphase filter circuit is formed of a long zero-order hold and a short FIR filter so that only several branches associated with the polyphase filter circuit corresponding to output samples immediately after a transition of the digital input signal is required to be calculated, thereby reducing the need to store a large number of filter coefficients and eliminating complex computations.
摘要翻译：用于在Σ-Δ数模转换器系统中实现非整数采样保持操作的方法和装置包括内插滤波器，多相滤波器电路和调制器。多相滤波器电路用于以相对较大数量的预定非整数上采样比虚拟上采样数字输入信号。多相滤波器电路由长零级保持和短FIR滤波器形成，使得仅需要计算与数字输入信号转换之后立即对应于输出样本的多相滤波器电路相关联的多个分支，从而减少需要存储大量的滤波器系数并消除复杂的计算。

52. 发明申请

US20050069050A1 Frequency based modulator compensation 有权
标题翻译：基于频率的调制器补偿
公开(公告)号：US20050069050A1
公开(公告)日：2005-03-31
申请号：US10673223
申请日：2003-09-30
申请人： Lei Ding , Walter Honcharenko , Munawar Kermalli , Zhengxiang Ma , Dennis Morgan
发明人： Lei Ding , Walter Honcharenko , Munawar Kermalli , Zhengxiang Ma , Dennis Morgan
IPC分类号： H03C3/40 , H04B1/04 , H04K1/02
CPC分类号： H04B1/0475 , H03C3/40 , H03C2200/0058
摘要： In a transmitter, an upconverter converts a lower frequency signal to a higher frequency signal. Prior to the upconversion, a compensator compensates for at least gain/phase distortion that will be introduced into the lower frequency signal by at least the upconverter.
摘要翻译：在发射机中，上变频器将较低频率信号转换为较高频率信号。在上变频之前，补偿器至少补偿上变频器至少补偿将被引入低频信号的增益/相位失真。

53. 发明授权

US09135815B2 Methods and systems for rating road segments 有权
标题翻译：评估路段的方法和系统
公开(公告)号：US09135815B2
公开(公告)日：2015-09-15
申请号：US13934706
申请日：2013-07-03
申请人： Ye Jin , Qiwei Zhang , Yinling Ni , Lei Ding , Ke Wang , Daihui Zhu
发明人： Ye Jin , Qiwei Zhang , Yinling Ni , Lei Ding , Ke Wang , Daihui Zhu
IPC分类号： G08G1/123 , G06F19/00 , G01S1/00 , G08G1/01 , G08G1/00 , G09B29/00 , H04W4/02 , H04W4/04
CPC分类号： G08G1/0112 , G08G1/0129 , G08G1/0141 , G08G1/202 , G09B29/007 , H04W4/02 , H04W4/029 , H04W4/04
摘要： A method and system to obtain taxi location data for a plurality of taxis located in a geographic region; obtain street data for a plurality of streets operating in the geographic region, the street data defining a location of the plurality of streets; store the taxi location data and the street data in an in-memory database management system; generate a rating for the plurality of streets associated with at least one currently active taxi, the rating providing an indication of a likelihood the at least one currently active taxi is available for a fare; and provide an output of the rating.
摘要翻译：一种用于获取位于地理区域中的多个出租车的出租车位置数据的方法和系统; 获取在所述地理区域中操作的多个街道的街道数据，所述街道数据定义所述多个街道的位置; 将出租车位置数据和街道数据存储在内存数据库管理系统中; 为与至少一个当前活动的出租车相关联的多个街道产生评级，所述评级提供至少一个当前有效的出租车可用于票价的可能性的指示; 并提供评级的输出。

54. 发明申请

US20150002319A1 METHODS AND SYSTEMS FOR RATING ROAD SEGMENTS 有权
标题翻译：评估路段的方法和系统
公开(公告)号：US20150002319A1
公开(公告)日：2015-01-01
申请号：US13934706
申请日：2013-07-03
申请人： Ye Jin , Qiwei Zhang , Yinling Ni , Lei Ding , Ke Wang , Daihui Zhu
发明人： Ye Jin , Qiwei Zhang , Yinling Ni , Lei Ding , Ke Wang , Daihui Zhu
IPC分类号： G08G1/123
CPC分类号： G08G1/0112 , G08G1/0129 , G08G1/0141 , G08G1/202 , G09B29/007 , H04W4/02 , H04W4/029 , H04W4/04
摘要： A method and system to obtain taxi location data for a plurality of taxis located in a geographic region; obtain street data for a plurality of streets operating in the geographic region, the street data defining a location of the plurality of streets; store the taxi location data and the street data in an in-memory database management system; generate a rating for the plurality of streets associated with at least one currently active taxi, the rating providing an indication of a likelihood the at least one currently active taxi is available for a fare; and provide an output of the rating.
摘要翻译：一种用于获取位于地理区域中的多个出租车的出租车位置数据的方法和系统; 获取在所述地理区域中操作的多个街道的街道数据，所述街道数据定义所述多个街道的位置; 将出租车位置数据和街道数据存储在内存数据库管理系统中; 为与至少一个当前活动的出租车相关联的多个街道产生评级，所述评级提供至少一个当前有效的出租车可用于票价的可能性的指示; 并提供评级的输出。

55. 发明授权

US08751481B2 Adaptive multi-channel content selection with behavior-aware query analysis 有权
标题翻译：自适应多通道内容选择与行为感知查询分析
公开(公告)号：US08751481B2
公开(公告)日：2014-06-10
申请号：US12148190
申请日：2008-04-16
申请人： Orhan Camoglu , Wahid Chrabakh , Lei Ding , Jingheo Miao , Divyakant Agrawal , Neeraj Bhatnagar , Tao Yang
发明人： Orhan Camoglu , Wahid Chrabakh , Lei Ding , Jingheo Miao , Divyakant Agrawal , Neeraj Bhatnagar , Tao Yang
IPC分类号： G06F17/30
CPC分类号： G06F17/30867
摘要： Preferred embodiments of the invention include systems and methods for selecting content from a plurality of channels in response to a received query are described. The invention embodiments include systems and methods that optimize content selection based on received queries and an identification of the user together with analysis of historical data. Embodiments of the invention also include methods for storing historical data including a plurality of queries and user data from a plurality of user databases, analyzing the stored historical data to classify the relevancy of a channel to each of the plurality of queries and user data, storing the classification, and displaying content to user based on such factors as user habits, queries, timing of searches, and content preferences.
摘要翻译：本发明的优选实施例包括用于响应于所接收的查询从多个信道中选择内容的系统和方法。本发明实施例包括基于接收的查询优化内容选择的系统和方法以及用户的标识以及历史数据的分析。本发明的实施例还包括用于存储包括来自多个用户数据库的多个查询和用户数据的历史数据的方法，分析存储的历史数据以将信道与多个查询和用户数据中的每一个相关联地分类，存储基于诸如用户习惯，查询，搜索时间和内容偏好等因素，对用户进行分类和显示内容。

56. 发明授权

US08750410B2 Multi-band power amplifier digital predistortion system and method 有权
标题翻译：多波段功率放大器数字预失真系统及方法
公开(公告)号：US08750410B2
公开(公告)日：2014-06-10
申请号：US12888191
申请日：2010-09-22
申请人： Hardik P. Gandhi , Lei Ding , Zigang Yang
发明人： Hardik P. Gandhi , Lei Ding , Zigang Yang
IPC分类号： H04L25/49 , H04L27/36 , H04L27/00
CPC分类号： H04L5/06 , H03F1/3247 , H03F2200/336 , H04B1/62 , H04L27/368
摘要： Traditionally, for multi-band communication systems, independent signal chains for each of the different bands are employed. By using such an architecture, there are a large number of components, and there is substantial power consumption. Here, transmit processor is provided that enables transmission across multiple bands using few components (namely, fewer signal chains), while also provided for digital predistortion.
摘要翻译：传统上，对于多频带通信系统，采用用于每个不同频带的独立信号链。通过使用这样的架构，存在大量组件，并且存在大量的功耗。这里，提供了能够使用少量组件（即较少信号链）在多个频带上进行传输的传输处理器，同时还提供用于数字预失真。

57. 发明授权

US08610766B2 Activity determination as function of transaction log 有权
标题翻译：活动确定作为事务日志的功能
公开(公告)号：US08610766B2
公开(公告)日：2013-12-17
申请号：US12890007
申请日：2010-09-24
申请人： Lei Ding , Quanfu Fan , Arun Hampapur , Sharathchandra U. Pankanti
发明人： Lei Ding , Quanfu Fan , Arun Hampapur , Sharathchandra U. Pankanti
IPC分类号： G06K9/00 , H04N7/18
CPC分类号： G06K9/6284 , G06K9/00335 , G06K9/00771 , G08B13/19613
摘要： Human behavior alerts are determined from a video stream through application of video analytics that parse a video stream into a plurality of segments, wherein each of the segments are either temporally related to at least one of a plurality of temporally distinct transactions in an event data log; or they are each associated with a pseudo transaction marker if not temporally related to at least one of the temporally distinct transactions and an image analysis indicates a temporal correlation with at least one of the distinct transactions is expected. Visual image features are extracted from the segments and one-SVM classification is performed on the extracted features to categorize segments into inliers or outliers relative to a threshold boundary. Event of concern alerts are issued with respect to the inlier segments associated with the associated pseudo transaction marker.
摘要翻译：通过应用将视频流解析成多个段的视频分析从视频流确定人的行为警报，其中每个段在时间上与事件数据日志中的多个时间上不同的事务中的至少一个相关 ; 或者如果与时间上不同的交易中的至少一个时间上不相关，并且图像分析指示与至少一个不同交易的时间相关性，则它们都与伪交易标记相关联。从段中提取视觉图像特征，并且对所提取的特征执行单SVM分类，以将段分类为相对于阈值边界的内联或异常值。关于与相关联的伪交易标记相关联的不规则段发出关注警报的事件。

58. 发明授权

US08588353B2 Frequency selective IQ correction 有权
标题翻译：频率选择性IQ校正
公开(公告)号：US08588353B2
公开(公告)日：2013-11-19
申请号：US13078363
申请日：2011-04-01
申请人： Zigang Yang , Lars Jorgensen , Lei Ding
发明人： Zigang Yang , Lars Jorgensen , Lei Ding
IPC分类号： H04B1/10
CPC分类号： H04L27/368 , H03C2200/0016 , H03F1/3247 , H03F1/3294 , H03F3/189 , H03F3/24 , H03F2200/336 , H04L27/364
摘要： In conventional radio frequency (RF) systems, transmitters will usually convert baseband signals to RF so as to be transmitted. As part of the conversion process, the transmitters will perform digital predistortion (DPD), which uses feedback from a power amplifier. However, there are usually mismatches between the in-phase (I) and quadrature (Q) paths within with feedback loop. Traditional IQ correction filters were ineffective at providing adequate compensation for these mismatches, but here a filter is provided that provides adequate out-of-band compensation by use of frequency selectivity.
摘要翻译：在常规射频（RF）系统中，发射机通常将基带信号转换成RF以便被发送。作为转换过程的一部分，发射机将执行使用功率放大器反馈的数字预失真（DPD）。然而，通过反馈回路中的同相（I）和正交（Q）路径之间通常存在不匹配。传统的IQ校正滤波器在为这些不匹配提供足够的补偿方面无效，但是提供了一种通过使用频率选择性提供足够的带外补偿的滤波器。

59. 发明申请

US20120286863A1 APPARATUS AND METHOD OF DIGITAL PREDISTORTION FOR POWER AMPLIFIERS WITH DYNAMIC NONLINEARITIES 有权
标题翻译：具有动态非线性功率放大器的数字预测装置和方法
公开(公告)号：US20120286863A1
公开(公告)日：2012-11-15
申请号：US13104578
申请日：2011-05-10
申请人： Hardik P. Gandhi , Lei Ding
发明人： Hardik P. Gandhi , Lei Ding
IPC分类号： H03F1/26
CPC分类号： H03F3/24 , H03F1/0288 , H03F1/3247 , H03F3/189 , H03F2200/321 , H03F2201/3233
摘要： Power amplifiers (PAs) using a Doherty or other power output level sensitive configuration have been employed for several years in telecommunications (as well as other applications) to take advantage of efficiency gains. For many of these applications, baseband signals are predistorted to compensate for nonlinearities in the PAs, but because there is a “switching event” in a Doherty-type amplifier (for example), the nonlinearities become dynamically varying. As a result, digital predistortion (DPD) becomes increasingly difficult to perform. Here, DPD modules are provided that adapt to changes in dynamically varying PAs based on a determination of the average power or other relevant metric prior to transmission.
摘要翻译：使用Doherty或其他功率输出电平敏感配置的功率放大器（PA）在电信（以及其他应用）中已经采用了数年，以利用效率提升。对于许多这些应用，基带信号被预失真以补偿PA中的非线性，但是由于在Doherty型放大器（例如）中存在开关事件，所以非线性变得动态变化。因此，数字预失真（DPD）变得越来越难以执行。这里，提供DPD模块，其基于在传输之前的平均功率或其他相关度量的确定来适应动态变化的PA的变化。

60. 发明申请

US20120075450A1 ACTIVITY DETERMINATION AS FUNCTION OF TRANSACTION LOG 有权
标题翻译：作为交易日志功能的活动决定
公开(公告)号：US20120075450A1
公开(公告)日：2012-03-29
申请号：US12890007
申请日：2010-09-24
申请人： Lei Ding , Quanfu Fan , Arun Hampapur , Sharathchandra U. Pankanti
发明人： Lei Ding , Quanfu Fan , Arun Hampapur , Sharathchandra U. Pankanti
IPC分类号： G06K9/00 , H04N7/18
CPC分类号： G06K9/6284 , G06K9/00335 , G06K9/00771 , G08B13/19613
摘要： Human behavior alerts are determined from a video stream through application of video analytics that parse a video stream into a plurality of segments, wherein each of the segments are either temporally related to at least one of a plurality of temporally distinct transactions in an event data log; or they are each associated with a pseudo transaction marker if not temporally related to at least one of the temporally distinct transactions and an image analysis indicates a temporal correlation with at least one of the distinct transactions is expected. Visual image features are extracted from the segments and one-SVM classification is performed on the extracted features to categorize segments into inliers or outliers relative to a threshold boundary. Event of concern alerts are issued with respect to the inlier segments associated with the associated pseudo transaction marker.
摘要翻译：通过应用将视频流解析成多个段的视频分析从视频流确定人的行为警报，其中每个段在时间上与事件数据日志中的多个时间上不同的事务中的至少一个相关 ; 或者如果与时间上不同的交易中的至少一个时间上不相关，并且图像分析指示与至少一个不同交易的时间相关性，则它们都与伪交易标记相关联。从段中提取视觉图像特征，并且对所提取的特征执行单SVM分类，以将段分类为相对于阈值边界的内联或异常值。关于与相关联的伪交易标记相关联的不规则段发出关注警报的事件。

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