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1. 发明申请

WO2009117662A1 APPLIQUE NODES FOR PERFORMANCE AND FUNCTIONALITY ENHANCEMENT IN RADIO FREQUENCY IDENTIFICATION SYSTEMS 审中-公开
标题翻译：无线电频率识别系统中性能和功能增强的应用编号
公开(公告)号：WO2009117662A1
公开(公告)日：2009-09-24
申请号：PCT/US2009/037812
申请日：2009-03-20
申请人： CHECKPOINT SYSTEMS, INC. , WILD, Ben, J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan , BARTON, Robert , TKACHENKO, Artem
发明人： WILD, Ben, J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan , BARTON, Robert , TKACHENKO, Artem
IPC分类号： G06K19/077
CPC分类号： G01S3/14 , G01S7/003 , G01S13/74 , G06K7/10178
摘要： In an RFID system with existing reader and tags communicating with each other, appliqués derive information by listening to this communication to yield significant performance benefits, while not affecting the communication between the existing nodes. For example, an appliqué capable of receiving beamforming can estimate the angle of arrival of the signal emitted by a tag, thereby providing information that can be used to localize the tag. An appliqué may be connected to an existing reader by means of an existing port, such as to an antenna port or to an Ethernet port. The information from appliqués can be integrated with that obtained from existing nodes at either the appliqués, or further up the hierarchy in middleware.
摘要翻译：在具有彼此通信的现有读取器和标签的RFID系统中，贴花通过监听该通信来获得信息，以产生显着的性能优点，同时不影响现有节点之间的通信。例如，能够接收波束形成的贴布可以估计由标签发出的信号的到达角度，从而提供可用于本地化标签的信息。贴布可以通过现有端口连接到现有的读取器，例如到天线端口或以太网端口。来自贴花的信息可以与从贴片上现有节点获得的信息集成，也可以与中间件的层次结构进一步集成。

2. 发明申请

WO2011035256A2 BEAMFORMING AND LOCALIZING IN A CONFIGURABLE MONITORING DEVICE SYSTEM 审中-公开
标题翻译：在可配置的监控设备系统中进行波束成形和定位
公开(公告)号：WO2011035256A2
公开(公告)日：2011-03-24
申请号：PCT/US2010/049520
申请日：2010-09-20
申请人： CHECKPOINT SYSTEMS, INC. , ECKERT, Lee , SHAFER, Gary, Mark , CLARE, Thomas , WANG, Steve , MADHOW, Upamanyu , WILD, Ben, J. , RAMCHANDRAN, Kannan , TKACHENKO, Artem
发明人： ECKERT, Lee , SHAFER, Gary, Mark , CLARE, Thomas , WANG, Steve , MADHOW, Upamanyu , WILD, Ben, J. , RAMCHANDRAN, Kannan , TKACHENKO, Artem
IPC分类号： G06K7/00
CPC分类号： G06K7/0008 , G06K7/0095 , G06K7/10217 , H04B7/0617 , Y02D70/144 , Y02D70/162 , Y02D70/164 , Y02D70/166 , Y02D70/22 , Y02D70/444
摘要： A system for radio frequency identification of a tag in an interrogation zone, includes a calibration node disposed in the interrogation zone to measure a signal strength of radio frequency identification signals from a beamforming system and provide signal data in accordance with the signal strength. A reader node is configured to receive the signal data and adjust the radio frequency identification signals generated by the beamforming system based upon the signal data. At least one of the calibration node, the reader node and the beamforming system is a configurable monitoring system. The calibration node, the reader node, and the beamforming system are coupled in a feedback control loop. The beamforming system includes a plurality of beamforming nodes. A signal of at least one beamforming node is optimized in accordance with the feedback control loop.
摘要翻译：一种用于询问区域中的标签的射频识别系统，包括设置在询问区中的校准节点，以测量来自波束成形系统的射频识别信号的信号强度，并根据信号强度提供信号数据。读取器节点被配置为基于信号数据接收信号数据并调整由波束成形系统产生的射频识别信号。校准节点，读取器节点和波束形成系统中的至少一个是可配置的监视系统。校准节点，读取器节点和波束成形系统在反馈控制回路中耦合。波束成形系统包括多个波束形成节点。根据反馈控制环路优化至少一个波束形成节点的信号。

3. 发明申请

WO2009117604A1 RANGE EXTENSION AND MULTIPLE ACCESS IN MODULATED BACKSCATTER SYSTEMS 审中-公开
标题翻译：调制式电脑系统的范围扩展和多路访问
公开(公告)号：WO2009117604A1
公开(公告)日：2009-09-24
申请号：PCT/US2009/037707
申请日：2009-03-19
申请人： CHECKPOINT SYSTEMS, INC. , WILD, Ben, J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan , TKACHENKO, Artem
发明人： WILD, Ben, J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan , TKACHENKO, Artem
IPC分类号： H04B1/707 , G06K7/00
CPC分类号： H04B1/707 , G01S13/751 , G06K7/0008 , G06K7/10297 , G06K19/0723 , G06K19/0724 , H04B2201/70715
摘要： One or more readers transmit radio frequency (RF) beacons to be electronically reflected by tags. Data transmitted via modulated backscatter from radio frequency identification (RFID) tags is encoded so as to permit reliable demodulation of simultaneous transmissions from multiple tags. This includes the use of spreading sequences as in direct sequence spread spectrum, where the spreading sequences may be a function of the tag ID, or may be randomly chosen. Backscattered signals from multiple tags may be detected using well-known receiver techniques for code division multiple access (CDMA) systems. Readers may be equipped with transmit and/or receive antenna arrays. A receive antenna array permits a reader to estimate directions of arrival for received signals, as well as to enhance range by performing receive beamforming.
摘要翻译：一个或多个读取器传送射频（RF）信标以由标签电子反射。通过来自射频识别（RFID）标签的调制反向散射发送的数据被编码，以允许来自多个标签的同时传输的可靠解调。这包括在直接序列扩频中使用扩展序列，其中扩展序列可以是标签ID的函数，或者可以是随机选择的。可以使用用于码分多址（CDMA）系统的公知接收机技术来检测来自多个标签的后向散射信号。读取器可以配备发送和/或接收天线阵列。接收天线阵列允许读取器估计接收信号的到达方向，以及通过执行接收波束形成来增强距离。

4. 发明申请

WO2010027980A1 RFID REPEATER FOR RANGE EXTENSION IN MODULATED BACKSCATTER SYSTEMS 审中-公开
标题翻译：变频调速系统范围扩大的RFID发射器
公开(公告)号：WO2010027980A1
公开(公告)日：2010-03-11
申请号：PCT/US2009/055624
申请日：2009-09-01
申请人： CHECKPOINT SYSTEMS, INC. , WILD, Ben J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
发明人： WILD, Ben J. , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
IPC分类号： G06K7/00
CPC分类号： G06K7/0008
摘要： A backscatter tag system including a tag having tag circuitry and a reader for transmitting a command signal to the tag includes an energizer node for transmitting an energy signal to the tag to energize the tag and provide energy for operating the tag circuitry and for emitting a backscatter signal by the tag. The energizer node includes an energizer receiver for receiving the command signal from the reader to provide a received command signal and an energizer transmitter for transmitting the received command signal from the reader to the tag. The energizer node transmits both the energy signal and the received command signal to the tag. The energizer transmitter can transmit a sinusoidal signal, a frequency hopping signal, a spread spectrum signal, or a frequency shifted signal to the tag. The backscatter tag circuitry can include a processor.
摘要翻译：包括具有标签电路的标签和用于向标签发送命令信号的读取器的反向散射标签系统包括用于将能量信号发送到标签的激励器节点，以激励标签并提供用于操作标签电路的能量并且用于发射反向散射信号由标签。激励器节点包括用于从读取器接收命令信号以提供接收到的命令信号的激发器接收器和用于将接收到的命令信号从读取器发送到标签的激励器发射器。激励器节点将能量信号和接收到的命令信号都发送到标签。激发器发射器可以向标签传输正弦信号，跳频信号，扩频信号或频移信号。反向散射标签电路可以包括处理器。

5. 发明申请

WO2009108157A1 LOCALIZING TAGGED ASSETS USING MODULATED BACKSCATTER 审中-公开
标题翻译：使用调制背板定位标签资产
公开(公告)号：WO2009108157A1
公开(公告)日：2009-09-03
申请号：PCT/US2008/003438
申请日：2008-03-14
申请人： WIRAMA CORPORATION , WILD, Ben , TKACHENKO, Artem , RAMCHANDRAN, Kannan , MADHOW, Upamanyu
发明人： WILD, Ben , TKACHENKO, Artem , RAMCHANDRAN, Kannan , MADHOW, Upamanyu
IPC分类号： G08B13/14
CPC分类号： G08C21/00 , G01S5/02 , G01S5/0252 , G01S11/02 , G01S13/756 , G01S13/876
摘要： Methods and systems for localizing an asset using the modulated backscatter from an asset tag and one or more marker tags are described. The system includes the reader, a location module and one or more marker tags. The location estimates for the asset tag are based partially on a prior knowledge of the location of each of the one or more marker tags. The location for each marker tag may be stored in a database. The location module determines a location estimate for the asset tag using the estimated parameters of the modulated backscatter signals received from one or more marker tags and from the asset tag. Using the known locations of the marker tags, a location estimate of the asset tag can be determined. The location estimate may be a relative location, an absolute location, and/or may be a zone including the marker tags. A mobile reader using the marker tags can localize asset tags throughout a large area and may, for example, take an inventory of assets throughout the large area.
摘要翻译：描述了使用来自资产标签和一个或多个标记标签的调制反向散射来定位资产的方法和系统。系统包括阅读器，位置模块和一个或多个标记标签。资产标签的位置估计部分地基于对一个或多个标记标签中的每一个的位置的先验知识。每个标记标签的位置可以存储在数据库中。位置模块使用从一个或多个标记标签和资产标签接收的调制后向散射信号的估计参数来确定资产标签的位置估计。使用标记标签的已知位置，可以确定资产标签的位置估计。位置估计可以是相对位置，绝对位置，和/或可以是包括标记标签的区域。使用标记标签的移动阅读器可以在大范围内对资产标签进行本地化，并且可以例如在整个大区域中进行资产盘点。

6. 发明申请

WO2002084960A3 DATA TRANSPORT ACCELERATION AND MANAGEMENT WITHIN A NETWORK COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2002084960A3
公开(公告)日：2002-10-24
申请号：PCT/US2002/011779
申请日：2002-04-11
申请人： BYTEMOBILE, INC. , HA, Sungwon , HAN, Sung-Wook , KIM, Tae-Eun , BHARGHAVAN, Vaduvur , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
发明人： HA, Sungwon , HAN, Sung-Wook , KIM, Tae-Eun , BHARGHAVAN, Vaduvur , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
IPC分类号： H04L12/56
摘要： Improved data transport and management within a network communication system may be achieved by utilizing a transmit timer incorporated within the sender device and exploiting host-level statistics for a plurality of connections between a sender and receiver. The period of the transmit timer may be periodically adjusted based on a ratio of the smoothed round-trip time and the smoothed congestion window, thereby reducing or eliminating bursty data transmission commonly associated with conventional TCP architectures. For applications having a plurality of connections between a sender and a receiver that share a common channel, such as web applications, the congestion window and smoothed round trip time estimates for all active connections may be used to initialize new connections and allocate bandwidth among existing connections. This aspect of the present invention may reduce the destructive interference that may occur as different connections compete with one another to maximize the bandwidth of each connection without regard to other connections serving the same application. Error recovery may also be improved by incorporating a short timer and a long timer that are configured to reduce the size of the congestion window and the corresponding transmission rate in response to a second packet loss with a predefined time period in order to increase resilience to random packet loss.

7. 发明申请

WO2002084960A2 DATA TRANSPORT ACCELERATION AND MANAGEMENT WITHIN A NETWORK COMMUNICATION SYSTEM 审中-公开
标题翻译：数据传输加速和网络通信系统内的管理
公开(公告)号：WO2002084960A2
公开(公告)日：2002-10-24
申请号：PCT/US2002/011779
申请日：2002-04-11
申请人： BYTEMOBILE , HA, Sungwon , HAN, Sung-Wook , KIM, Tae-Eun , BHARGHAVAN, Vaduvur , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
发明人： HA, Sungwon , HAN, Sung-Wook , KIM, Tae-Eun , BHARGHAVAN, Vaduvur , MADHOW, Upamanyu , RAMCHANDRAN, Kannan
IPC分类号： H04L12/56
CPC分类号： H04L1/0018 , H04L1/0002 , H04L1/1809 , H04L1/1874 , H04L1/188 , H04L1/1887 , H04L29/06 , H04L47/10 , H04L47/193 , H04L47/20 , H04L47/28 , H04L47/283 , H04L47/37 , H04L69/16 , H04L69/161 , H04L69/162 , H04L69/163 , Y02D50/10
摘要： Improved data transport and management within a network communication system may be achieved by utilizing a transmit timer incorporated within the sender device and exploiting host-level statistics for a plurality of connections between a sender and receiver. The period of the transmit timer may be periodically adjusted based on a ratio of the smoothed round-trip time and the smoothed congestion window, thereby reducing or eliminating bursty data transmission commonly associated with conventional TCP architectures. For applications having a plurality of connections between a sender and a receiver that share a common channel, such as web applications, the congestion window and smoothed round trip time estimates for all active connections may be used to initialize new connections and allocate bandwidth among existing connections. This aspect of the present invention may reduce the destructive interference that may occur as different connections compete with one another to maximize the bandwidth of each connection without regard to other connections serving the same application. Error recovery may also be improved by incorporating a short timer and a long timer that are configured to reduce the size of the congestion window and the corresponding transmission rate in response to a second packet loss with a predefined time period in order to increase resilience to random packet loss.
摘要翻译：网络通信系统内的改进的数据传输和管理可以通过利用包含在发送方设备内的发送定时器并利用发送方和接收方之间的多个连接的主机级统计来实现。可以基于平滑的往返时间与平滑的拥塞窗口的比率周期性地调整发送定时器的周期，从而减少或消除通常与常规TCP体系结构相关联的突发数据传输。对于在共享公共信道的发送器和接收器之间具有多个连接的应用（诸如web应用），所有活动连接的拥塞窗口和平滑往返时间估计可以用于初始化新连接并在现有连接之间分配带宽。本发明的这个方面可以减少当不同连接彼此竞争时可能发生的破坏性干扰，以最大化每个连接的带宽，而不考虑服务于相同应用的其他连接。错误恢复还可以通过并入短定时器和长定时器来提高，所述短定时器和长定时器被配置为响应于预定时间段的第二分组丢失而减小拥塞窗口的大小和相应的传输速率，以便增加对随机的恢复能力数据包丢失。

8. 发明申请

WO2008127225A3 MECHANISM FOR STREAMING MEDIA DATA OVER WIDEBAND WIRELESS NETWORKS WITH ERROR CONCEALMENT 审中-公开
公开(公告)号：WO2008127225A3
公开(公告)日：2008-10-23
申请号：PCT/US2007/007263
申请日：2007-03-22
申请人： SIBEAM, INC. , GILBERT, Jeffrey, M. , RAMCHANDRAN, Kannan , SONG, Guocong
发明人： GILBERT, Jeffrey, M. , RAMCHANDRAN, Kannan , SONG, Guocong
IPC分类号： H04B7/06 , H04L29/06 , H04L12/28
摘要： A system is disclosed having a transmitter to wirelessly transmit multi-media data. The transmitter includes a module to packetize phase units of a multimedia frame that is to be transmitted. The system also includes a receiver to receive the multimedia frame received from the transmitter. The receiver includes a post processing module to perform error concealment on the phase units.

9. 发明申请

WO2002096118A2 DECODING COMPRESSED IMAGE DATA 审中-公开
标题翻译：解码压缩图像数据
公开(公告)号：WO2002096118A2
公开(公告)日：2002-11-28
申请号：PCT/US2002/015457
申请日：2002-05-15
申请人： BYTEMOBILE, INC. , CHOU, Jim , RAMCHANDRAN, Kannan
发明人： CHOU, Jim , RAMCHANDRAN, Kannan
IPC分类号： H04N7/30
CPC分类号： H04N19/86 , H04N19/527 , H04N19/60 , H04N19/61
摘要： Image data encoded in accordance with a block transform coding scheme may be processed by estimating from the encoded image data a discontinuity threshold for detecting artificial edges introduced by the block transform coding scheme. Once the encoded image data is decoded, differences between pairs of pixels disposed along a block boundary of the decoded image may be determined. If the difference between a given pair of pixels is less than the discontinuity threshold, the given pair of pixels may be adjusted to reduce the difference below a visibility threshold, thereby improving the quality of the decoded image by reducing or eliminating blocking artifacts.
摘要翻译：可以通过从编码图像数据估计用于检测由块变换编码方案引入的人造边缘的不连续阈值来处理根据块变换编码方案编码的图像数据。一旦编码图像数据被解码，就可以确定沿着解码图像的块边界布置的像素对之间的差异。如果给定的一对像素之间的差小于不连续阈值，则可以调整给定的像素对以将差异减小到可见度阈值以下，从而通过减少或消除块伪影来提高解码图像的质量。

10. 发明申请

WO2005043882A3 VIDEO SOURCE CODING WITH SIDE INFORMATION 审中-公开
公开(公告)号：WO2005043882A3
公开(公告)日：2005-05-12
申请号：PCT/US2004/034856
申请日：2004-10-21
申请人： PRISMVIDEO, INC , RAMCHANDRAN, Kannan , ORTEGA, Antonio
发明人： RAMCHANDRAN, Kannan , ORTEGA, Antonio
IPC分类号： H04N7/12
摘要： For video coding based on source coding (fig. 1) with side information (mode information), features pertain to modules in the encoder and the decoder, to the codec, and to systems utilizing an encoder, a decoder and/or a codec. An encoding (fig. 1) can provide an estimate of the degree of correlation between blocks, can identify a target codeword, can represent the target codeword by a set comprising a plurality of codewords with the set including the target codeword, and can determine a hash value (fig. 1) from the target codeword, for decoding to take advantage of such information. Advantageously also, the information can be used in transmission rate control (fig: 1). An encoding to be transmitted can be selected from several different encodings. Encoding of a block can benefit from information on previous blocks fed back from a decoder. In generating an encoding, different camera sources can be used, as well as sensors arrayed on a grid. An encoding can be multi-cast.

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