-
公开(公告)号：US20150198694A1
公开(公告)日：2015-07-16
申请号：US14667348
申请日：2015-03-24
CPC分类号： G01S19/48 , G01S5/0252 , G01S5/0263 , G01S5/14 , G01S19/03 , G01S19/46
摘要： A positioning server has a positioning database. The positioning database is configured to store information relating wireless local area network (WLAN) access point (AP) signal measurements to points of a geographic positioning grid. motion information provided by dead-reckoning systems of a plurality of wireless devices and reference location information provided by at least one of a satellite positioning system and a wireless local area network (WLAN) positioning system of each wireless device is also stored. WLAN access point (AP) signal measurements acquired by each wireless device in correspondence with the motion information is stored as are non-causally determine positions of the wireless devices based on the motion information and reference locations. Positioning server is also configured to generate a geographic positioning grid that relates the AP signal measurements to points of the positioning grid based on the determined positions.
摘要翻译： 定位服务器具有定位数据库。 定位数据库被配置为将关于无线局域网（WLAN）接入点（AP）信号测量的信息存储在地理定位网格的点上。 还存储由多个无线设备的推算系统提供的运动信息和由每个无线设备的卫星定位系统和无线局域网（WLAN）定位系统中的至少一个提供的参考位置信息。 根据运动信息和参考位置非根本地确定无线设备的位置，存储与运动信息相对应的每个无线设备获取的WLAN接入点（AP）信号测量。 定位服务器还被配置为基于确定的位置生成将AP信号测量与定位网格的点相关联的地理定位网格。
-
公开(公告)号：US20140171108A1
公开(公告)日：2014-06-19
申请号：US13852073
申请日：2013-03-28
IPC分类号： H04W4/02
CPC分类号： B81C1/00984 , B81B3/0005 , B81B7/0032 , B81C1/00261 , B81C1/0096 , B81C2201/112 , H01L21/02112 , H04W4/02 , Y10S257/914
摘要： A wireless device that includes an access point (AP) scanner, a transceiver, and a controller coupled to the AP scanner and transceiver. The AP scanner is configured to scan wireless network channels utilized by one or more APs to transmit data packets, probe responses, and beacons. The transceiver is configured to transmit one or more probe requests to the one or more APs and receive one or more probe responses and beacons from the one or more APs. The controller is configured to determine a proximate geographic position of the wireless device based on signal strength of the one or more probe responses and beacons received from the one or more APs. The controller also dynamically adapts a parameter utilized in determining the proximate geographic position of the wireless device.
摘要翻译： 一种包括接入点（AP）扫描器，收发器和耦合到AP扫描器和收发器的控制器的无线设备。 AP扫描器被配置为扫描由一个或多个AP使用的无线网络信道以发送数据分组，探测响应和信标。 收发器被配置为向一个或多个AP发送一个或多个探测请求，并从一个或多个AP接收一个或多个探测响应和信标。 控制器被配置为基于从一个或多个AP接收的一个或多个探测响应和信标的信号强度来确定无线设备的邻近地理位置。 控制器还动态地适配用于确定无线设备的最近地理位置的参数。
-
63.发明申请Low-Complexity Tightly-Coupled Integration Filter for Step Detection in a Sensor-Assisted GNSS Receiver 有权低复杂度紧耦合积分滤波器，用于传感器辅助GNSS接收机中的步进检测公开(公告)号：US20130131983A1
公开(公告)日：2013-05-23
申请号：US13745186
申请日：2013-01-18
发明人： June Chul Roh , Deric Wayne Waters , Srinath Hosur , Goutam Dutta
CPC分类号： G01S19/47 , G01C21/165 , G01C21/28 , G01C22/006 , G06F17/16
摘要： Embodiments of the invention provide a step detection. An accelerometer measurement in the form of a multi-dimensional acceleration vector is obtained. The magnitude of the accelerometer measurement is filtered using a low pass filter. A threshold for a down-crossing is provided as is a threshold for an up-crossing. A step detection is triggered if the magnitude of the accelerometer measurement is greater than or equal to the threshold for an up-crossing.
摘要翻译： 本发明的实施例提供了步骤检测。 获得多维加速度矢量形式的加速度计测量。 使用低通滤波器对加速度计测量的幅度进行滤波。 提供了一个下划线的阈值，就像上一交叉口的阈值一样。 如果加速度计测量的幅度大于或等于上行阈值，则触发步进检测。
-
公开(公告)号：US12124393B2
公开(公告)日：2024-10-22
申请号：US17587695
申请日：2022-01-28
CPC分类号： G06F13/4068 , G06F13/4282 , G06F2213/0016
摘要： An example system includes: a device coupled to a data line, the device configured to: send a first command on the data line, the first command including a first address; after sending the first command, read a first value on the data line, the first value including data from a first target device and a second target device; responsive to reading the first value, send a second command including the first address and data representing the first value on the data line; send a third command on the data line, the third command including the first address; after sending the third command, read a second value on the data line, the second value including data from the first target device and the second target device; responsive to reading the second value, send a fourth command on the data line, the fourth command including the first address.
-
公开(公告)号：US12086013B2
公开(公告)日：2024-09-10
申请号：US17505522
申请日：2021-10-19
IPC分类号： G06F1/3287 , G06F1/26 , G06F13/38 , G06F13/40 , G06F13/42
CPC分类号： G06F1/3287 , G06F1/266 , G06F13/385 , G06F13/4022 , G06F13/4282 , Y02D10/00 , Y02D30/50
摘要： Described examples include USB port controllers with a control circuit configured to switch from a normal first power mode to a second power mode for reduced power consumption in response a command from a port manager circuit, and to switch from the second power mode to the first power mode in response to detected activity on a communications connection, or a detected connection of a USB device to a USB port connector. After switching back to the first power mode in response to detected communications activity, the control circuit automatically switches operation of the USB port controller back to the second power mode unless a communications transaction addressed to the USB port controller is received within a non-zero certain time after switching from the second power mode to the first power mode.
-
公开(公告)号：US20240283454A1
公开(公告)日：2024-08-22
申请号：US18652901
申请日：2024-05-02
发明人： Deric Wayne Waters
IPC分类号： H03K19/003
CPC分类号： H03K19/00346
摘要： An example method includes determining, by a controller of a device, whether a length of transmission data is longer than a threshold and responsive to determining that the length of data is longer than the threshold, setting, by the controller a deglitch duration to a duration. The method also includes transmitting, by the device, the data, while the deglitch duration has the duration.
-
公开(公告)号：US10895899B2
公开(公告)日：2021-01-19
申请号：US15856697
申请日：2017-12-28
发明人： Deric Wayne Waters
摘要： A circuit includes a regulation circuit configured to intercept messages on a configuration channel of a universal serial bus (USB) cable between a USB source device and a USB sink device. The regulation circuit regulates a source capability message from the USB cable configuration channel based on a predetermined power capability of the USB cable.
-
公开(公告)号：US20200044568A1
公开(公告)日：2020-02-06
申请号：US16597385
申请日：2019-10-09
发明人： Deric Wayne Waters
摘要： A system may include a power supply configurable to generate any of a plurality of output voltages on a power supply output node. The system also may include a voltage auto-detection power distribution (PD) controller coupled to the power supply. The voltage auto-detection PD controller is configured to monitor an input signal for detection of presence of a device coupled to the system via a cable and assert combinations of a plurality of control signals. For each combination of control signals, the voltage auto-detection PD controller measures a value of an output voltage from the power supply, stores the measured value, and generates a plurality of packets for transmission to the device. Each packet contains a parameter indicative of a measured output voltage.
-
公开(公告)号：US10527453B2
公开(公告)日：2020-01-07
申请号：US15845984
申请日：2017-12-18
IPC分类号： G01C23/00 , G01D18/00 , G01C21/16 , A61B8/00 , A61B8/08 , G01S19/48 , A61B5/00 , G01S19/47 , G01S19/49 , G08B21/04 , G01S19/34 , G06F19/00 , A61B5/053 , H04N5/232 , H04N7/18 , G06F1/32 , G06K9/62 , A61B5/145 , G16H40/40 , G16H20/30 , G16H15/00
摘要： A system comprises a plurality of sensors, a sensor processor, and a sampling rate engine. The sensor processor is coupled to an output of each sensor of the plurality of sensors. The sensor processor estimates user dynamics in response to a first output signal of a first sensor of the plurality of sensors. The sampling rate engine is coupled to an output of the sensor processor. The sampling rate engine determines a sampling rate value of a second sensor of the plurality of sensors in response to a user dynamics value from the sensor processor. The second sensor comprises a selectable sampling rate. The selectable sampling rate is configured in response to the sampling rate value determined by the sampling rate engine.
-
公开(公告)号：US09851204B2
公开(公告)日：2017-12-26
申请号：US13738499
申请日：2013-01-10
发明人： Deric Wayne Waters
摘要： Visual codes are scanned to assist navigation. The visual code may be a Quick Response (QR) code that contains information useful to calibrating a variety of navigation-based sensors such as gyroscopes, e-compasses, and barometric pressure sensors. Embodiments describe methods for magnetometer calibration and computing sensor orientation relative to users' local frame of reference. The embodiments use an initial yaw estimate, accelerometer, and gyroscope measurements along with other readily available information (the earth's magnetic field intensity, inclination angle, and declination angle).
-
-
-
-
-
-
-
-
-
搜索结果
82 条记录 (耗时 0.023 秒)
