公开(公告)号：US20130016759A1

公开(公告)日：2013-01-17

申请号：US13180853

申请日：2011-07-12

申请人： Jonathan W. Hui ,  Wei Hong ,  Lik Chuen Alec Woo

发明人： Jonathan W. Hui ,  Wei Hong ,  Lik Chuen Alec Woo

IPC分类号： H04B1/713

CPC分类号： H04B1/713

摘要： In one embodiment, a communication device samples a particular frequency hopping sequence during only a particular specified sub-timeslot of a timeslot. If a transmission energy is not detected during the specified sub-timeslot, the device turns off its receiver for a remainder of the timeslot. Otherwise, it continues to sample the particular frequency hopping sequence for at least one or more additional sub-timeslots of the remainder of the timeslot. In another embodiment, a communication device determines whether a neighboring communication device is operating in a first mode or a second mode. If in the second mode, it transmits a transmission to the neighboring communication device starting at any sub-timeslot of the plurality of sub-timeslots. If in the first mode, it transmits the transmission to the neighboring communication device while ensuring that the transmission is actively energized during a particular specified sub-timeslot.

摘要翻译： 在一个实施例中，通信设备仅在时隙的特定指定子时隙中采样特定的跳频序列。 如果在指定的子时隙期间未检测到传输能量，则该设备在时隙的剩余时间内关闭其接收机。 否则，它继续针对时隙的其余部分的至少一个或多个附加子时隙对特定跳频序列进行采样。 在另一个实施例中，通信设备确定相邻通信设备是否在第一模式或第二模式中操作。 如果在第二模式中，则从多个子时隙的任何子时隙开始向相邻通信设备发送传输。 如果在第一模式中，则将传输发送到相邻通信设备，同时确保在特定指定子时隙期间传输被激活。

公开(公告)号：US20130016757A1

公开(公告)日：2013-01-17

申请号：US13180908

申请日：2011-07-12

申请人： Jonathan W. Hui ,  Lik Chuen Alec Woo ,  Wei Hong

发明人： Jonathan W. Hui ,  Lik Chuen Alec Woo ,  Wei Hong

IPC分类号： H04B1/713

CPC分类号： H04W52/0209 ,  H04B1/7156 ,  H04W56/00

摘要： In one embodiment, a battery-operated communication device “quick-samples” a frequency hopping sequence at a periodic rate corresponding to a substantially low duty cycle, and is discovered by (e.g., attached to) a main-powered communication device. During a scheduled sample, the main-powered communication device transmits a control packet to be received by the battery-operated communication device, the control packet containing timing information and transmitted to account for worst-case clock drift error between the two devices. The battery-operated communication device responds to the control packet with a link-layer acknowledgment containing timing information from the battery-operated communication device. Accordingly, the two devices may re-synchronize their timing based on the timing information in the control packet and acknowledgment, respectively.

摘要翻译： 在一个实施例中，电池供电的通信设备以对应于基本上较低的占空比的周期性速率快速采样跳频序列，并且由（例如附接到）主供电通信设备来发现。 在预定采样期间，主供电通信设备发送由电池供电的通信设备接收的控制分组，该控制分组包含定时信息，并且被传送以考虑两个设备之间的最坏情况时钟漂移误差。 电池供电的通信设备用包含来自电池供电通信设备的定时信息的链路层确认来响应控制分组。 因此，两个设备可以分别基于控制分组和确认中的定时信息重新同步其定时。

公开(公告)号：US20130010055A1

公开(公告)日：2013-01-10

申请号：US13532162

申请日：2012-06-25

申请人： Veeramanikandan Raju ,  Wei Hong ,  Minhua Zhou

发明人： Veeramanikandan Raju ,  Wei Hong ,  Minhua Zhou

IPC分类号： H04N13/00

CPC分类号： H04N19/46 ,  H04N13/128 ,  H04N19/597 ,  H04N19/70

摘要： In response to a stereoscopic image of first and second views, a maximum positive disparity is computed between the first and second views, and a minimum negative disparity is computed between the first and second views. Within a bit stream, at least the stereoscopic image, the maximum positive disparity, and the minimum negative disparity are encoded.

摘要翻译： 响应于第一和第二视图的立体图像，在第一和第二视图之间计算最大正视差，并且在第一视图和第二视图之间计算最小负视差。 在比特流内，至少对立体图像，最大正视差和最小负视差进行编码。

公开(公告)号：US20110026596A1

公开(公告)日：2011-02-03

申请号：US12510958

申请日：2009-07-28

申请人： Wei Hong

发明人： Wei Hong

IPC分类号： H04N7/26

CPC分类号： H04N5/145

摘要： Methods for coherent block-based motion estimation for motion-compensated frame rate conversion of decoded video sequences are provided. In some of the disclosed methods, motion vectors are estimated for each block in a decoded frame in both raster scan order and reverse raster scan order using prediction vectors from selected spatially and temporally neighboring blocks. Further, in some of the disclosed methods, a spatial coherence constraint that detects and removes motion vector crossings is applied to the motion vectors estimated for each block in a frame to reduce halo artifacts in the up-converted video sequence. In addition, in some of the disclosed methods, post processing is performed on estimated motion vectors to improve the coherence of the motion vectors. This post-processing includes application of vector median filters to the estimated motion vectors for a frame and/or application of a sub-block motion refinement to increase the density of the motion field.

摘要翻译： 提供了用于解码视频序列的运动补偿帧速率转换的基于相干块的运动估计的方法。 在一些所公开的方法中，使用来自所选空间和时间相邻块的预测向量，以解码帧中的每个块以光栅扫描顺序和反向光栅扫描顺序来估计运动矢量。 此外，在一些所公开的方法中，检测和去除运动矢量交叉的空间相干约束被应用于为帧中的每个块估计的运动矢量，以减少上变频视频序列中的晕圈伪影。 此外，在一些所公开的方法中，对估计的运动矢量执行后处理以改善运动矢量的相干性。 该后处理包括将矢量中值滤波器应用于帧的估计运动矢量和/或子块运动细化的应用以增加运动场的密度。

公开(公告)号：US06429991B1

公开(公告)日：2002-08-06

申请号：US09291328

申请日：1999-04-15

申请人： Scott J. Tucker ,  Wei Hong

发明人： Scott J. Tucker ,  Wei Hong

IPC分类号： G11B503

CPC分类号： G11B5/02 ,  G11B5/00 ,  G11B5/012 ,  G11B5/09 ,  G11B2005/0018

摘要： An arrangement for reading data from a magnetic data carrier using a magneto-resistive (MR) head. A bias current source supplies the MR head with a bias current adjustable after MR head change. A bias current control signal having multiple control bits is used for adjusting the bias current. A noise shunting capacitor is connected to the MR head for reducing noise caused by the bias current. A discharging circuit is coupled to the noise shunting capacitor to discharge the capacitor when the bias current is being adjusted, in order to reduce bias current settling time. The discharging circuit comprises a pair of switches for each control bit of the bias current control signal. One of the switches is connected to a positive plate of the noise shunting capacitor, and another switch is coupled to a negative plate of the capacitor. The switches are controlled by a one-shot multivibrator triggered by a falling edge of the corresponding control bit. Weighting resistors are connected to each switch for weighting a discharge current produced by the switch in accordance with a position of the corresponding control bit so as to produce a larger discharge current in response to a higher-order control bit of the bias current control signal.

摘要翻译： 一种用于使用磁阻（MR）磁头从磁数据载体读取数据的装置。 偏置电流源为MR磁头提供在MR磁头更换后可调整的偏置电流。 具有多个控制位的偏置电流控制信号用于调整偏置电流。 噪声分流电容器连接到MR磁头，以减少由偏置电流引起的噪声。 当调整偏置电流时，放电电路耦合到噪声分流电容器以对电容器放电，以减少偏置电流稳定时间。 放电电路包括用于偏置电流控制信号的每个控制位的一对开关。 一个开关连接到噪声分流电容器的正极板，另一个开关耦合到电容器的负极板。 开关由相应控制位的下降沿触发的单稳态多谐振荡器控制。 加权电阻器连接到每个开关，用于根据相应控制位的位置加权由开关产生的放电电流，以便响应于偏置电流控制信号的较高阶控制位而产生较大的放电电流。

公开(公告)号：US09071533B2

公开(公告)日：2015-06-30

申请号：US13563185

申请日：2012-07-31

申请人： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

发明人： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC分类号： H04W4/00 ,  H04L12/721 ,  H04L12/761 ,  H04W40/02 ,  H04W40/28 ,  H04L12/743

CPC分类号： H04L45/14 ,  H04L45/16 ,  H04L45/7453 ,  H04W40/02 ,  H04W40/023 ,  H04W40/28

摘要： In one embodiment, a source node (e.g., responsible node) determines a plurality of destination nodes of a message, and generates a probabilistic data structure that encodes each of the plurality of destination nodes without any false negatives and with zero or more false positives. The source node may then transmit the message with the probabilistic data structure toward the plurality of destination nodes, wherein nodes receiving the message interpret the probabilistic data structure to determine whether the receiving node is probabilistically one of the intended plurality of destination nodes.

摘要翻译： 在一个实施例中，源节点（例如，负责节点）确定消息的多个目的地节点，并且生成概率数据结构，其编码多个目的地节点中的每一个，而没有任何假否定和零或更多的假肯定。 然后，源节点可以将具有概率数据结构的消息发送到多个目的地节点，其中接收消息的节点解释概率数据结构，以确定接收节点是否是概率地预期的多个目的地节点之一。

公开(公告)号：US08959607B2

公开(公告)日：2015-02-17

申请号：US13196960

申请日：2011-08-03

申请人： Navindra Yadav ,  Atul Mahamuni ,  Jonathan Hui ,  Wei Hong ,  Alec Woo

发明人： Navindra Yadav ,  Atul Mahamuni ,  Jonathan Hui ,  Wei Hong ,  Alec Woo

IPC分类号： H04L9/32 ,  H04L9/08 ,  H04L29/06 ,  H04W12/04 ,  H04W12/06 ,  H04W84/18

CPC分类号： H04L9/0819 ,  H04L9/0827 ,  H04L9/0833 ,  H04L9/088 ,  H04L9/0891 ,  H04L9/14 ,  H04L9/321 ,  H04L9/3273 ,  H04L63/065 ,  H04L63/068 ,  H04L63/0823 ,  H04L63/12 ,  H04L2209/24 ,  H04L2463/061 ,  H04W12/04 ,  H04W12/06 ,  H04W12/10 ,  H04W84/18

摘要： According to one embodiment, techniques are provided to enable secure communication among devices in a mesh network using a group temporal key. An authenticator device associated with a mesh network stores a pairwise master key for each of a plurality of devices in a mesh network upon authentication of the respective devices. Using the pairwise master key, the authenticator device initiates a handshake procedure with a particular device in the mesh network to mutually derive a pairwise temporal key from the pairwise master key. The authenticator device encrypts and signs a group temporal key using the pairwise temporal key for the particular device and sends the group temporal key encrypted and signed with the pairwise temporal key to the particular device.

摘要翻译： 根据一个实施例，提供了使用组时间密钥来实现网状网络中的设备之间的安全通信的技术。 与网状网络相关联的认证装置在对各个装置进行认证时，为网状网络中的多个装置中的每一个存储成对的主密钥。 使用成对主密钥，认证器设备发起与网状网络中的特定设备的握手过程，以从成对主密钥互相导出成对的时间密钥。 认证器设备使用特定设备的成对时间密钥加密和签署组时间密钥，并将具有成对时间密钥加密和签名的组时间密钥发送到特定设备。

公开(公告)号：US08908626B2

公开(公告)日：2014-12-09

申请号：US13566875

申请日：2012-08-03

申请人： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

发明人： Jonathan W. Hui ,  Wei Hong ,  Jean-Philippe Vasseur

IPC分类号： H04W72/04 ,  H04L1/16 ,  H04W72/12 ,  H04L1/00

CPC分类号： H04W72/0406 ,  H04L1/1607 ,  H04L2001/0093 ,  H04W72/005 ,  H04W72/1205 ,  H04W72/1263 ,  H04W72/1278 ,  H04W72/1289 ,  H04W84/18

摘要： In one embodiment, a device receives and stores a broadcast schedule, and may determine whether a neighbor unicast listening schedule is available for a neighboring device. If so, the device may transmit a data frame to the neighboring device pursuant to the neighbor unicast listening schedule. If a neighbor unicast listening schedule is not available, the device may transmit the data frame to the neighboring device pursuant to a broadcast schedule. Once the data frame is received by the neighboring device, pursuant to the neighbor unicast listening schedule or the broadcast schedule, an acknowledgement may be received from the neighboring device, which may include an updated neighbor unicast listening schedule for that neighboring device.

摘要翻译： 在一个实施例中，设备接收并存储广播调度，并且可以确定邻居单播监听调度是否可用于相邻设备。 如果是，则设备可以根据邻居单播监听时间表向相邻设备发送数据帧。 如果邻居单播监听调度不可用，则设备可以根据广播时间表将数据帧发送到相邻设备。 一旦相邻设备接收到数据帧，根据邻居单播监听调度或广播调度，可以从相邻设备接收确认，该确认可以包括该相邻设备的更新的邻居单播监听调度。

公开(公告)号：US08879604B2

公开(公告)日：2014-11-04

申请号：US13177132

申请日：2011-07-06

申请人： Lik Chuen Alec Woo ,  Jonathan W. Hui ,  Wei Hong

发明人： Lik Chuen Alec Woo ,  Jonathan W. Hui ,  Wei Hong

IPC分类号： H04B1/713 ,  H04H20/71 ,  H04L12/18 ,  H04B1/7156 ,  H04W72/00 ,  H04H20/59

CPC分类号： H04W72/0446 ,  H04B1/7156 ,  H04H20/59 ,  H04L5/06 ,  H04L12/189 ,  H04W72/005 ,  H04W74/0808

摘要： In one embodiment, a rendezvous request message is generated (e.g., by a sender) that specifies a channel C and a rendezvous time T for which a distributed message is to be transmitted in a frequency-hopping computer network. The rendezvous request message is then transmitted on one or more channels used in the computer network based on reaching a plurality of intended recipients of the distributed message with the rendezvous request message prior to rendezvous time T. Accordingly, the distributed message is then transmitted on channel C at rendezvous time T. In another embodiment, a device receives a rendezvous request message, and in response to determining to honor the rendezvous request message, listens for the distributed message on channel C at rendezvous time T.

摘要翻译： 在一个实施例中，生成会话请求消息（例如，由发送者），其指定要在跳频计算机网络中发送分布式消息的信道C和会合时间T. 然后，基于在会合时间T之前到达具有会合请求消息的分布式消息的多个预期接收者，在计算机网络中使用的一个或多个信道上发送会合请求消息。因此，分布式消息随后在信道 在另一个实施例中，设备接收会合请求消息，并且响应于确定尊重会合请求消息，在会合时间T在频道C上侦听分布式消息。

公开(公告)号：US20140169666A1

公开(公告)日：2014-06-19

申请号：US14239511

申请日：2011-08-18

申请人： Wei Hong

发明人： Wei Hong

IPC分类号： G06T11/60 ,  G06T11/00

CPC分类号： G06T11/60 ,  G06T11/00 ,  G06T11/001 ,  G06T15/503

摘要： Methods and systems are disclosed for creating a blended image by receiving an overlay image frame in a device (105) implemented by electronic circuitry, the overlay image frame having multiple pixels, and determining a blending factor with the device (105) for each pixel in the overlay image frame. The blending factor is based on the color saturation surrounding the pixel such that an amount by which the pixel contributes to a blended image of the overlay image frame with an underlying image frame is based on the blending factor.

摘要翻译： 公开了用于通过在由电子电路实现的设备（105）中接收覆盖图像帧来创建混合图像的方法和系统，所述重叠图像帧具有多个像素，并且针对每个像素的装置（105）确定混合因子 覆盖图像帧。 混合因子基于像素周围的颜色饱和度，使得像素对叠加图像帧与下面的图像帧的混合图像的贡献量基于混合因子。