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公开(公告)号：US5361102A
公开(公告)日：1994-11-01
申请号：US754895
申请日：1991-09-04
申请人： Sumit Roy , Chandrakant B. Patel , Jian Yang
发明人： Sumit Roy , Chandrakant B. Patel , Jian Yang
CPC分类号： H04N5/211
摘要： A new technique for channel characterization for Advanced Compatible TV (ACTV) broadcasting systems is hereby proposed that conforms to the current practice of transmitting a ghost cancellation reference (GCR) signal during the vertical blanking interval (VBI). A copy of the GCR signal is stored at the receiver, and is used to extract the effective ghost channel parameters via digital signal processing techniques. A pair of equi-length, binary (.+-.) sequences is said to be complementary if the sum of the linear autocorrelation functions of the sequences is identically zero for all shifts other than zero, and provides a high correlation gain at zero shift. Such sequences can be sequentially transmitted on the allotted VBI line in the appropriate fields, along with pairwise constant signals in the corresponding fields of a basic eighth field sequence. To conform to the positivity constraint of the transmitted signal for NTSC compatible systems, each complementary sequence is transmitted on a pedestal. At the receiver, the effect of the common constant signals are first removed by subtraction and the resultant signals are correlated with each of the two complementary sequences. The output of the correlators are added to directly yield estimates of the channel coefficients.
摘要翻译： 因此，提出了符合在垂直消隐间隔（VBI）期间发送重影消除参考（GCR）信号的当前实践的用于高级兼容电视（ACTV）广播系统的信道表征的新技术。 GCR信号的副本存储在接收器处，并用于通过数字信号处理技术提取有效的重影信道参数。 如果对于除零之外的所有移位，序列的线性自相关函数之和相同为零，则称为一对等长二进制（+/-）序列，并在零漂移时提供高相关增益。 这样的序列可以在适当的场中的分配的VBI线上连续发送，以及基本第八场序列的相应字段中的成对恒定信号。 为了符合NTSC兼容系统的发送信号的积极约束，每个互补序列在基座上传输。 在接收机处，首先通过减法去除公共常数信号的影响，并将所得到的信号与两个互补序列中的每一个相关联。 添加相关器的输出以直接产生信道系数的估计。
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52.发明授权公开(公告)号：US09641026B2
公开(公告)日：2017-05-02
申请号：US13155707
申请日：2011-06-08
CPC分类号： H02J13/0079 , Y02B70/3216 , Y04S20/221
摘要： The subject specification comprises enhanced communication infrastructure for a multi-tier hierarchical smart distribution grid (SDG). The SDG comprises a specified number of distribution network node controller (DNNC) components employed to desirably control communications and power distribution between respective tiers of the SDG to facilitate efficient power distribution. When communication between the a DNNC in one tier and another DNNC in another tier, is desired, the DNNC can identify available communication channels and respective communication conditions of the available communication channels, and can dynamically select a subset of available data and preferred communication channel, based at least in part on predefined control criteria, to control data transmission loads in the network and facilitate real time control of the SDG. Data can be communicated via the selected communication channel. Respective DNNCs can desirably control power distribution for respective tiers, minimizing upper tier involvement in lower tier power distribution.
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公开(公告)号：US08953612B2
公开(公告)日：2015-02-10
申请号：US13414235
申请日：2012-03-07
申请人： Hui Liu , Mohammad H. Firooz , Sumit Roy
发明人： Hui Liu , Mohammad H. Firooz , Sumit Roy
CPC分类号： H04L1/0076 , H04H20/42 , H04L1/0057 , H04L69/22 , H04W4/06
摘要： Embodiments of systems and methods for efficient broadcasting via random linear packet combining are described. A plurality of data packets are received from a data source according to embodiments. The plurality of data packets is divided into a plurality of data blocks, and bits associated with the plurality of data blocks are multiplied by a set of coefficients to generate a plurality of product values. An encoded data packet having a plurality of encoded data blocks may also be generated by linearly combining the plurality of product values for respective data blocks of each of the plurality of data packets into corresponding encoded data blocks of the encoded data packet. Because each encoded data packet includes information about a complete set of data packets, rather than just a subset, less broadcast redundancy may be required.
摘要翻译： 描述了通过随机线性分组组合进行有效广播的系统和方法的实施例。 根据实施例，从数据源接收多个数据分组。 多个数据分组被分成多个数据块，并且与多个数据块相关联的比特乘以一系列系数以产生多个乘积值。 也可以通过将多个数据分组中的每一个的各个数据块的多个乘积值线性地组合成编码数据分组的相应的编码数据块来生成具有多个编码数据块的编码数据分组。 因为每个编码的数据分组包括关于完整的一组数据分组的信息，而不仅仅是一个子集，所以可能需要较少的广播冗余。
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公开(公告)号：US20130235794A1
公开(公告)日：2013-09-12
申请号：US13414235
申请日：2012-03-07
申请人： Hui Liu , Mohammad H. Firooz , Sumit Roy
发明人： Hui Liu , Mohammad H. Firooz , Sumit Roy
IPC分类号： H04W4/06
CPC分类号： H04L1/0076 , H04H20/42 , H04L1/0057 , H04L69/22 , H04W4/06
摘要： Embodiments of systems and methods for efficient broadcasting via random linear packet combining are described. A method for random linear packet combining includes receiving a plurality of data packets from a data source. Additionally, the method may include dividing the plurality of data packets into a plurality of data blocks, and multiplying bits associated with the plurality of data blocks by a set of coefficients to generate a plurality of product values. The method may also include generating an encoded data packet having a plurality of encoded data blocks, wherein generating the encoded data packet comprises linearly combining the plurality of product values for respective data blocks of each of the plurality of data packets into corresponding encoded data blocks of the encoded data packet. Because each encoded data packet includes information about a complete set of data packets, rather than just a subset, less broadcast redundancy may be required.
摘要翻译： 描述了通过随机线性分组组合进行有效广播的系统和方法的实施例。 随机线性分组组合的方法包括从数据源接收多个数据分组。 另外，该方法可以包括将多个数据分组划分为多个数据块，以及将与多个数据块相关联的比特乘以一系列系数以生成多个乘积值。 该方法还可以包括生成具有多个编码数据块的编码数据分组，其中生成编码数据分组包括将多个数据分组中的每一个的相应数据块的多个乘积值线性组合成相应的编码数据块 编码数据包。 因为每个编码的数据分组包括关于完整的一组数据分组的信息，而不仅仅是一个子集，所以可能需要较少的广播冗余。
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公开(公告)号：US08533259B2
公开(公告)日：2013-09-10
申请号：US13014867
申请日：2011-01-27
IPC分类号： G06F15/16
CPC分类号： H04N21/85406 , H04L65/4084 , H04L65/80 , H04N21/23424
摘要： A system and methods are disclosed for serving combined media using resource metadata referencing original media data. Combined resource metadata is created from combining the metadata of two or more files for a virtual media file representing the requested combined media. The combined data can be adjusted to synch audio and video portions as needed for combining the files. The virtual media file references the original media files and serves the content on-the-fly, rather than creating a new file with the combined media, at a savings of server response time and memory consumption, while maintaining high performance.
摘要翻译： 公开了使用参考原始媒体数据的资源元数据来为组合媒体提供服务的系统和方法。 通过组合表示所请求的组合媒体的虚拟媒体文件的两个或多个文件的元数据来创建组合的资源元数据。 可以根据组合文件的需要调整组合数据以同步音频和视频部分。 虚拟媒体文件引用原始媒体文件，并且即时运行内容，而不是使用组合媒体创建新文件，从而节省服务器响应时间和内存消耗，同时保持高性能。
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公开(公告)号：US20120163229A1
公开(公告)日：2012-06-28
申请号：US13413030
申请日：2012-03-06
申请人： Sumit Roy , Rohit Gupta
发明人： Sumit Roy , Rohit Gupta
摘要： Examples of achieving quality of service in a wireless local area network via meeting communication channel performance criteria to include a minimum signal-to-noise plus interference ratio and a proportional fairness limit are disclosed.
摘要翻译： 公开了通过满足通信信道性能标准在无线局域网中实现服务质量以包括最小信噪比加干扰比和比例公平限制的示例。
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公开(公告)号：US07613223B2
公开(公告)日：2009-11-03
申请号：US10749343
申请日：2003-12-31
CPC分类号： H04B1/71632 , H04B1/713
摘要： Time-frequency coding in a multi-band ultra-wideband system is generally described. In this regard a hopping code agent is presented to select a frequency hopping code for encoding and decoding from a set of predetermined FHC's for communicating with other devices in a multi-band ultra-wideband (MB-UWB) network, wherein the FHC defines a sequence of two or more pulses over two or more frequencies and wherein the FHC's include a time slot that contains no transmission. Other embodiments are also disclosed and claimed.
摘要翻译： 通常描述多频带超宽带系统中的时频编码。 在这方面，呈现跳频代码代理从用于与多频带超宽带（MB-UWB）网络中的其他设备进行通信的一组预定FHC选择用于编码和解码的跳频码，其中FHC定义 在两个或多个频率上的两个或更多个脉冲的序列，并且其中FHC包括不包含传输的时隙。 还公开并要求保护其他实施例。
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公开(公告)号：US20050085893A1
公开(公告)日：2005-04-21
申请号：US10487818
申请日：2002-08-20
申请人： Sumit Roy
发明人： Sumit Roy
CPC分类号： A61F2/92 , A61F2/856 , A61F2/88 , A61F2002/065 , A61F2002/825 , A61F2002/9528 , A61F2230/0076
摘要： An implantable prosthesis for placement in hollow tubular organs is described alongwith an instrument for deploying the said prosthesis. On radial compaction, the prosthesis has a low profile, allowing introduction into the body with a deployment instrument of low calibre. The prosthesis has multiple longitudinal struts to provide longitudinal support. The prosthesis may be provided with helically configured members for circumferential support. The deployment instrument includes a retrievable tool to temporarily secure the prosthesis within the body during the implantation procedure.
摘要翻译： 描述了用于放置在中空管状器官中的可植入假体以及用于展开所述假体的器械。 在径向压实时，假体具有低轮廓，允许使用低口径的展开仪器引入身体。 假体具有多个纵向支柱以提供纵向支撑。 假体可以设置有螺旋构造的用于周向支撑的构件。 展开仪器包括可回收工具，用于在植入过程期间将假体临时固定在体内。
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59.发明授权Method, apparatus, and computer program product for quiet period management in wireless networks for coexistence 有权方法，设备和计算机程序产品，用于无线网络中的静态期间管理共存公开(公告)号：US08730990B2
公开(公告)日：2014-05-20
申请号：US13233317
申请日：2011-09-15
IPC分类号： H04L12/413
CPC分类号： H04W72/082
摘要： Method, apparatus, and computer program product embodiments are disclosed for quiet period management in wireless networks to enhance coexistence of wireless networks with other wireless networks. An example embodiment comprises: receiving control information in a wireless message in a communications channel from another device in a wireless network; receiving a packet having a duration in the communications channel in the wireless network; delaying transmission of a packet in the communications channel for an interval determined by the received control information; monitoring an ambient electromagnetic spectrum during the interval; and competing for transmission resources in the communications channel, using a carrier sense multiple access with collision avoidance access method, after the interval.
摘要翻译： 公开了无线网络中的安静时段管理的方法，装置和计算机程序产品实施例，以增强无线网络与其他无线网络的共存。 示例实施例包括：在无线网络中的另一设备的通信信道中的无线消息中接收控制信息; 接收在无线网络中的通信信道中具有持续时间的分组; 延迟由所接收的控制信息确定的间隔在通信信道中的分组的传输; 在间隔期间监测环境电磁频谱; 并在通信信道中竞争传输资源，采用具有冲突避免接入方式的载波侦听多路访问方式，间隔后。
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60.发明申请METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR QUIET PERIOD MANAGEMENT IN WIRELESS NETWORKS FOR COEXISTENCE 有权方法，装置和计算机程序产品在无线网络中的周期管理公开(公告)号：US20130070605A1
公开(公告)日：2013-03-21
申请号：US13233317
申请日：2011-09-15
CPC分类号： H04W72/082
摘要： Method, apparatus, and computer program product embodiments are disclosed for quiet period management in wireless networks to enhance coexistence of wireless networks with other wireless networks. An example embodiment comprises: receiving control information in a wireless message in a communications channel from another device in a wireless network; receiving a packet having a duration in the communications channel in the wireless network; delaying transmission of a packet in the communications channel for an interval determined by the received control information; monitoring an ambient electromagnetic spectrum during the interval; and competing for transmission resources in the communications channel, using a carrier sense multiple access with collision avoidance access method, after the interval.
摘要翻译： 公开了无线网络中的安静时段管理的方法，装置和计算机程序产品实施例，以增强无线网络与其他无线网络的共存。 示例实施例包括：在无线网络中的另一设备的通信信道中的无线消息中接收控制信息; 接收在无线网络中的通信信道中具有持续时间的分组; 延迟由所接收的控制信息确定的间隔在通信信道中的分组的传输; 在间隔期间监测环境电磁频谱; 并在通信信道中竞争传输资源，采用具有冲突避免接入方式的载波侦听多路访问方式，间隔后。
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