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1. 发明授权

US08355354B2 Local and wide-area transmissions in a wireless broadcast network 有权
标题翻译：无线广播网络中的本地和广域传输
公开(公告)号：US08355354B2
公开(公告)日：2013-01-15
申请号：US12646520
申请日：2009-12-23
申请人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
发明人： Rajiv Vijayan , Fuyun Ling , Gordon K. Walker , Murali R. Chari , Ashok Mantravadi , Anand D. Subramaniam
IPC分类号： H04H20/71
CPC分类号： H04L5/0041 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L12/189 , H04W72/005
摘要： To broadcast different types of transmission having different tiers of coverage in a wireless broadcast network, each base station processes data for a wide-area transmission in accordance with a first mode (or coding and modulation scheme) to generate data symbols for the wide-area transmission and processes data for a local transmission in accordance with a second mode to generate data symbols for the local transmission. The first and second modes are selected based on the desired coverage for wide-area and local transmissions, respectively. The base station also generates pilots and overhead information for local and wide-area transmissions. The data, pilots, and overhead information for local and wide-area transmissions are multiplexed onto their transmission spans, which may be different sets of frequency subbands, different time segments, or different groups of subbands in different time segments. More than two different types of transmission may also be multiplexed and broadcast.
摘要翻译：为了在无线广播网络中广播具有不同层次的不同类型的传输，每个基站根据第一模式（或编码和调制方案）处理广域传输的数据，以产生广域的数据符号根据第二模式传输和处理用于本地传输的数据，以产生用于本地传输的数据符号。分别基于广域和本地传输的期望覆盖来选择第一和第二模式。基站还为本地和广域传输生成导频和开销信息。用于本地和广域传输的数据，导频和开销信息被复用到它们的传输跨度，其可以是不同组的频率子带，不同时间段或不同时间段中的不同子带组。多于两种不同类型的传输也可以被复用和广播。

2. 发明授权

US08655294B2 Method and apparatus for position signal assisted window placement 失效
标题翻译：位置信号辅助窗口放置的方法和装置
公开(公告)号：US08655294B2
公开(公告)日：2014-02-18
申请号：US12787062
申请日：2010-05-25
申请人： Gordon K. Walker , Murali R. Chari , Fuyun Ling
发明人： Gordon K. Walker , Murali R. Chari , Fuyun Ling
IPC分类号： H04B1/16
CPC分类号： H04L27/2688 , H04L1/20 , H04L25/0216 , H04L27/2665 , H04L27/2695
摘要： Methods and circuits for positioning a signal sampling window within a wireless receiver device for use in a multi-transmitter wireless broadcast network include generating a long channel model based upon a signal identifying transmitters that can be processed without aliases, and positioning the signal sampling window based upon the long channel model. For example, in a MediaFLO® broadcast, the long channel model may be generated by receiving positioning pilot channel (PPC) signals. Positions for the signal sampling window may be determined by identifying hypothetical signal sampling window positions, calculating signal to interference and noise ratio (SINR) values for each identified hypothetical, and selecting the hypothetical with the best SINR. Using a long channel model to position the signal sampling window may provide improved window placement, reduce destructive aliasing, and reduce a time guard in the window placement. The long channel model may be used in conjunction with terrain databases.
摘要翻译：用于在无线接收机设备内定位用于多发射机无线广播网络中的信号采样窗口的方法和电路包括基于识别可以在没有别名的情况下被处理的发射机的信号来生成长信道模型，并且基于信号采样窗口在长渠道模式。例如，在MediaFLO广播中，可以通过接收定位导频信道（PPC）信号来生成长信道模型。信号采样窗口的位置可以通过识别假设信号采样窗口位置，为每个识别的假设计算信号与干扰和噪声比（SINR）值并选择具有最佳SINR的假设来确定。使用长通道模型来定位信号采样窗口可以提供改进的窗口放置，减少破坏性混叠，并减少窗口位置中的时间守卫。长通道模型可以与地形数据库结合使用。

3. 发明申请

US20100304699A1 METHOD AND APPARATUS FOR POSITION SIGNAL ASSISTED WINDOW PLACEMENT 失效
标题翻译：位置信号辅助窗口放置的方法和装置
公开(公告)号：US20100304699A1
公开(公告)日：2010-12-02
申请号：US12787062
申请日：2010-05-25
申请人： GORDON K. WALKER , Murali R. Chari , Fuyun Ling
发明人： GORDON K. WALKER , Murali R. Chari , Fuyun Ling
IPC分类号： H04B17/00
CPC分类号： H04L27/2688 , H04L1/20 , H04L25/0216 , H04L27/2665 , H04L27/2695
摘要： Methods and circuits for positioning a signal sampling window within a wireless receiver device for use in a multi-transmitter wireless broadcast network include generating a long channel model based upon a signal identifying transmitters that can be processed without aliases, and positioning the signal sampling window based upon the long channel model. For example, in a MediaFLO® broadcast, the long channel model may be generated by receiving positioning pilot channel (PPC) signals. Positions for the signal sampling window may be determined by identifying hypothetical signal sampling window positions, calculating signal to interference and noise ratio (SINR) values for each identified hypothetical, and selecting the hypothetical with the best SINR. Using a long channel model to position the signal sampling window may provide improved window placement, reduce destructive aliasing, and reduce a time guard in the window placement. The long channel model may be used in conjunction with terrain databases.
摘要翻译：用于在无线接收机设备内定位用于多发射机无线广播网络中的信号采样窗口的方法和电路包括基于识别可以在没有别名的情况下被处理的发射机的信号来生成长信道模型，并且基于信号采样窗口在长渠道模式。例如，在MediaFLO广播中，可以通过接收定位导频信道（PPC）信号来生成长信道模型。信号采样窗口的位置可以通过识别假设信号采样窗口位置，为每个识别的假设计算信号与干扰和噪声比（SINR）值并选择具有最佳SINR的假设来确定。使用长通道模型来定位信号采样窗口可以提供改进的窗口放置，减少破坏性混叠，并减少窗口位置中的时间守卫。长通道模型可以与地形数据库结合使用。

4. 发明授权

US08635645B2 Apparatus and methods of providing and receiving venue level transmissions and services 有权
标题翻译：提供和接收场地级传输和服务的装置和方法
公开(公告)号：US08635645B2
公开(公告)日：2014-01-21
申请号：US12569792
申请日：2009-09-29
申请人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
发明人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
IPC分类号： H04N5/445
CPC分类号： H04N21/2385 , H04L12/189 , H04L67/16 , H04L67/18 , H04N21/482 , H04W4/02 , H04W4/04 , H04W48/16 , H04W72/005
摘要： A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission.
摘要翻译：一种用于提供和接收场地级传输和服务的场地播放系统和方法，包括通过从非场地网络接收开销信号来发现场地特定传输，从开销信号中提取用于接收场地特定传输的信息，以及基于所提取的信息进行调谐以接收特定于场地的传输。可以以不阻止接入终端接收局域或广域传输的方式提供和接收场地级传输。

5. 发明申请

US20100195628A1 APPARATUS AND METHOD FOR TIME-DIVISION MULTIPLEXING (TDM) FOR MULTIPLE SIGNAL OFDM SIGNAL FORMATS 审中-公开
标题翻译：用于多信号OFDM信号格式的时分多址（TDM）的装置和方法
公开(公告)号：US20100195628A1
公开(公告)日：2010-08-05
申请号：US12696369
申请日：2010-01-29
申请人： GORDON K. WALKER , Murali R. Chari
发明人： GORDON K. WALKER , Murali R. Chari
IPC分类号： H04J3/00
CPC分类号： H04L27/0008
摘要： Methods, systems and apparatus, including computer programs encoded on computer storage media, for operating time division multiplexing (TDM) on segments of MediaFLO superframes comprising: generating a MediaFLO OFDM waveform with at least one MediaFLO frame; allocating a MediaFLO local multiplex time segment in the at least one MediaFLO frame for non-MediaFLO data; and inserting the non-MediaFLO data into the MediaFLO local multiplex time segment. In one example, the non-MediaFLO data is a DVB-H table that is split into two time segments within the MediaFLO OFDM waveform. In another aspect, the apparatus and method for operating time division multiplexing (TDM) on alternate whole superframes of time comprising generating a MediaFLO OFDM waveform with a plurality of MediaFLO superframes; multiplexing the MediaFLO OFDM waveform with non-MediaFLO data over the plurality of MediaFLO superframes for whole superframe durations; and inserting MediaFLO data in at least one of the plurality of MediaFLO superframes.
摘要翻译：方法，系统和装置，包括在计算机存储介质上编码的计算机程序，用于在MediaFLO超帧的段上进行时分复用（TDM），包括：利用至少一个MediaFLO帧生成MediaFLO OFDM波形; 在所述至少一个MediaFLO帧中为非MediaFLO数据分配MediaFLO本地多路复用时间段; 并将非MediaFLO数据插入到MediaFLO本地多路复用时间段中。在一个示例中，非MediaFLO数据是在MediaFLO OFDM波形内分为两个时间段的DVB-H表。在另一方面，一种用于在交替的整个超帧上操作时分复用（TDM）的装置和方法，包括：生成具有多个MediaFLO超帧的MediaFLO OFDM波形; 在整个超帧持续时间内，通过多个MediaFLO超帧将MediaFLO OFDM波形与非MediaFLO数据进行多路复用; 以及在所述多个MediaFLO超帧中的至少一个中插入MediaFLO数据。

6. 发明授权

US08526412B2 Frequency division multiplexing of multiple data streams in a wireless multi-carrier communication system 有权
标题翻译：无线多载波通信系统中多个数据流的频分复用
公开(公告)号：US08526412B2
公开(公告)日：2013-09-03
申请号：US10968614
申请日：2004-10-18
申请人： Rajiv Vijayan , Gordon Kent Walker , Raghuraman Krishnamoorthi , Murali R. Chari
发明人： Rajiv Vijayan , Gordon Kent Walker , Raghuraman Krishnamoorthi , Murali R. Chari
IPC分类号： H04B7/288
CPC分类号： H04L27/0008 , H04L5/0007 , H04L5/0041 , H04L5/0044 , H04L5/0051 , H04L5/0064 , H04L25/022 , H04L25/0226 , H04L25/0228 , H04L27/2604 , H04L27/2605 , H04L27/2647 , Y02D70/10
摘要： Techniques for multiplexing multiple data streams using frequency division multiplexing (FDM) in an OFDM system are described. M disjoint “interlaces” are formed with U usable subbands. Each interlace is a different set of S subbands, where U=M·S. The subbands for each interlace are interlaced with the subbands for each of the other M−1 interlaces. M slots may be defined for each symbol period and assigned slot indices 1 through M. The slot indices may be mapped to interlaces such that (1) frequency diversity is achieved for each slot index and (2) the interlaces used for pilot transmission have varying distances to the interlaces used for each slot index, which improves channel estimation performance. Each data stream may be processed as data packets of a fixed size, and different numbers of slots may be used for each data packet depending on the coding and modulation scheme used for the data packet.
摘要翻译：描述了在OFDM系统中使用频分复用（FDM）来复用多个数据流的技术。 M个不相交的“交错”与U个可用的子带形成。每个交错是不同的S个子带集合，其中U = M·S。用于每个交错的子带与用于其它M-1交错的每个子带进行隔行扫描。可以为每个符号周期和分配的时隙索引1到M定义M个时隙。时隙索引可以被映射到交织，使得（1）针对每个时隙索引实现频率分集，以及（2）用于导频传输的交织具有不同的到每个时隙索引用于交织的距离，这提高了信道估计性能。每个数据流可以被处理为固定大小的数据分组，并且根据用于数据分组的编码和调制方案，每个数据分组可以使用不同数量的时隙。

7. 发明申请

US20100080163A1 APPARATUS AND METHODS OF PROVIDING AND RECEIVING VENUE LEVEL TRANSMISSIONS AND SERVICES 有权
标题翻译：提供和接收场地层面传输和服务的装置和方法
公开(公告)号：US20100080163A1
公开(公告)日：2010-04-01
申请号：US12569792
申请日：2009-09-29
申请人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
发明人： Raghuraman Krishnamoorthi , Pankaj V. Rahate , Pankaj Jain , Devarshi P. Shah , Pavel A. Seliverstov , George A. Rothrock , Nilabh Khare , Anil K. Wadhwani , Jiming Guo , Sanjiv Nanda , Fuyun Ling , Murali R. Chari , Avneesh Agrawal , Rinat Burdo , Prasanna Kannan , Krishna K. Mukkavilli , Reynaldo W. Newman , Michael M. Fan , Manoj M. Deshpande , Ranjith S. Jayaram
IPC分类号： H04H20/71 , H04W4/02 , H04N5/445 , H04Q5/22 , G08B13/14 , H04L29/06
CPC分类号： H04N21/2385 , H04L12/189 , H04L67/16 , H04L67/18 , H04N21/482 , H04W4/02 , H04W4/04 , H04W48/16 , H04W72/005
摘要： A venue-cast system and method for providing and receiving venue level transmissions and services, including discovery of a venue specific transmission by receiving an overhead signal from a non-venue network, extracting information for receiving the venue specific transmission from the overhead signal, and tuning to receive the venue specific transmission based on the extracted information. The venue level transmission may be provided and received in a manner that does not prevent an access terminal from receiving a local area or wide area transmission.
摘要翻译：一种用于提供和接收场地级传输和服务的场地播放系统和方法，包括通过从非场地网络接收开销信号来发现场地特定传输，从开销信号中提取用于接收场地特定传输的信息，以及基于所提取的信息进行调谐以接收特定于场地的传输。可以以不阻止接入终端接收局域或广域传输的方式提供和接收场地级传输。

8. 发明授权

US10248184B2 Sensor API framework for cloud based applications 有权
公开(公告)号：US10248184B2
公开(公告)日：2019-04-02
申请号：US13292578
申请日：2011-11-09
申请人： Piyush Sharma , Ashwin Swaminathan , Christopher Brunner , Murali R. Chari
发明人： Piyush Sharma , Ashwin Swaminathan , Christopher Brunner , Murali R. Chari
IPC分类号： G06F3/00 , G06F9/44 , G06F9/46 , G06F13/00 , G06F1/3293 , H04W52/02 , G06F9/54 , H04L29/08
摘要： An apparatus and method for a framework exposing an API (application programming interface) to web-based server applications on the internet or in the cloud is presented. The API allows server applications to retrieve sensor data from a mobile device via a low-power sensor core processor on a mobile device. This API eliminates effort and cost associated with developing and promoting a new mobile device client application. The API framework includes APIs that web-based application may use to fetch sensor data from one or more particular sensors on the mobile device.

9. 发明授权

US09014421B2 Framework for reference-free drift-corrected planar tracking using Lucas-Kanade optical flow 有权
标题翻译：使用Lucas-Kanade光流的无参考漂移校正平面跟踪框架
公开(公告)号：US09014421B2
公开(公告)日：2015-04-21
申请号：US13247939
申请日：2011-09-28
申请人： Mahesh Ramachandran , Ashwin Swaminathan , Murali R. Chari , Serafin Diaz Spindola
发明人： Mahesh Ramachandran , Ashwin Swaminathan , Murali R. Chari , Serafin Diaz Spindola
IPC分类号： G06T7/20
CPC分类号： G06T7/2066 , G06T7/207 , G06T7/269 , G06T2207/10016 , G06T2207/20016 , G06T2207/30244
摘要： Reference free tracking of position by a mobile platform is performed using images of a planar surface. Tracking is performed optical flow techniques, such as pyramidal Lucas-Kanade optical flow with multiple levels of resolution, where displacement is determined with pixel accuracy at lower resolutions and at sub-pixel accuracy at full resolution, which improves computation time for real time performance. Periodic drift correction is performed by matching features between a current frame and a keyframe. The keyframe may be replaced with the drift corrected current image.
摘要翻译：使用平面表面的图像来执行移动平台对位置的自由跟踪。跟踪是执行光流技术，例如具有多级分辨率的锥形Lucas-Kanade光流，其中以较低分辨率的像素精度和全分辨率的子像素精度确定位移，这改善了实时性能的计算时间。通过匹配当前帧和关键帧之间的特征来执行周期漂移校正。关键帧可以用漂移校正的当前图像代替。

10. 发明申请

US20120243732A1 Adaptable Framework for Cloud Assisted Augmented Reality 有权
标题翻译：云辅助增强现实的适应框架
公开(公告)号：US20120243732A1
公开(公告)日：2012-09-27
申请号：US13235847
申请日：2011-09-19
申请人： Ashwin Swaminathan , Piyush Sharma , Bolan Jiang , Murali R. Chari , Serafin Diaz Spindola , Pawan Kumar Baheti , Vidya Narayanan
发明人： Ashwin Swaminathan , Piyush Sharma , Bolan Jiang , Murali R. Chari , Serafin Diaz Spindola , Pawan Kumar Baheti , Vidya Narayanan
IPC分类号： G06K9/00 , G06K9/62 , H04N7/18
CPC分类号： G06T7/246 , G06K9/00671 , G06T7/73 , G06T2207/10004
摘要： A mobile platform efficiently processes sensor data, including image data, using distributed processing in which latency sensitive operations are performed on the mobile platform, while latency insensitive, but computationally intensive operations are performed on a remote server. The mobile platform acquires sensor data, such as image data, and determines whether there is a trigger event to transmit the sensor data to the server. The trigger event may be a change in the sensor data relative to previously acquired sensor data, e.g., a scene change in an image. When a change is present, the sensor data may be transmitted to the server for processing. The server processes the sensor data and returns information related to the sensor data, such as identification of an object in an image or a reference image or model. The mobile platform may then perform reference based tracking using the identified object or reference image or model.
摘要翻译：移动平台使用在移动平台上执行延迟敏感操作的分布式处理来有效地处理包括图像数据的传感器数据，而延迟不敏感，但在远程服务器上执行计算密集型操作。移动平台获取诸如图像数据的传感器数据，并且确定是否存在将传感器数据传送到服务器的触发事件。触发事件可以是传感器数据相对于先前获取的传感器数据的变化，例如图像中的场景变化。当存在变化时，传感器数据可以被发送到服务器进行处理。服务器处理传感器数据并返回与传感器数据相关的信息，例如图像中的对象或参考图像或模型的识别。然后，移动平台可以使用所识别的对象或参考图像或模型来执行基于参考的跟踪。

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