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1. 发明授权

US07928724B2 Magnetic odometer with direction indicator systems and method 失效
标题翻译：磁性里程表带方向指示器系统和方法
公开(公告)号：US07928724B2
公开(公告)日：2011-04-19
申请号：US12127691
申请日：2008-05-27
申请人： Toan Vu , Tom Judd , Ron Fang , Bruce Graham
发明人： Toan Vu , Tom Judd , Ron Fang , Bruce Graham
IPC分类号： G01B7/14 , G01P13/00 , G01P3/42
CPC分类号： G01B7/30 , G01C22/00
摘要： Systems and methods for determining a directional movement of an object such as a wheeled vehicle. The system includes a magnet having a north pole and a south pole mounted to the object, a single magnetic sensor positioned such that the sensor can individually detect each magnetic pole as the object moves, the sensor configured to produce a first characteristic signal when a north pole is detected and a second characteristic signal when a south pole is detected, and a processing device in signal communication with the sensor, the processing device configured to determine a directional movement of the object based on a configuration of a signal doublet that includes the first and second characteristic signals. The methods include sensing the north and south poles as they pass the magnetic sensor and determining a direction based on an order in which the north and south poles are sensed.
摘要翻译：用于确定诸如轮式车辆的物体的定向运动的系统和方法。该系统包括具有安装在物体上的北极和南极的磁体，一个单一的磁传感器，其定位成使得当物体移动时传感器能够单独地检测每个磁极，该传感器被配置为当北极产生第一特征信号时检测到极点，并且当检测到南极时，检测到第二特征信号，以及处理装置，其与传感器进行信号通信，所述处理装置被配置为基于包括第一信号的信号双倍的配置来确定对象的方向移动和第二特征信号。这些方法包括在通过磁传感器时感测南极和南极，并根据感测到北极和南极的顺序确定方向。

2. 发明申请

US20090295376A1 MAGNETIC ODOMETER WITH DIRECTION INDICATOR SYSTEMS AND METHODS 失效
标题翻译：具有方向指示器系统和方法的磁性光度计
公开(公告)号：US20090295376A1
公开(公告)日：2009-12-03
申请号：US12127691
申请日：2008-05-27
申请人： Toan Vu , Tom Judd , Ron Fang , Bruce Graham
发明人： Toan Vu , Tom Judd , Ron Fang , Bruce Graham
IPC分类号： G01B7/14 , G01B7/30
CPC分类号： G01B7/30 , G01C22/00
摘要： Systems and methods for determining a directional movement of an object such as a wheeled vehicle. The system includes a magnet having a north pole and a south pole mounted to the object, a single magnetic sensor positioned such that the sensor can individually detect each magnetic pole as the object moves, the sensor configured to produce a first characteristic signal when a north pole is detected and a second characteristic signal when a south pole is detected, and a processing device in signal communication with the sensor, the processing device configured to determine a directional movement of the object based on a configuration of a signal doublet that includes the first and second characteristic signals. The methods include sensing the north and south poles as they pass the magnetic sensor and determining a direction based on an order in which the north and south poles are sensed.
摘要翻译：用于确定诸如轮式车辆的物体的定向运动的系统和方法。该系统包括具有安装在物体上的北极和南极的磁体，一个单一的磁传感器，其定位成使得当物体移动时传感器能够单独地检测每个磁极，该传感器被配置为当北极产生第一特征信号时检测到极点，并且当检测到南极时，检测到第二特征信号，以及处理装置，其与传感器进行信号通信，所述处理装置被配置为基于包括第一信号的信号双倍的配置来确定对象的方向移动和第二特征信号。这些方法包括在通过磁传感器时感测南极和南极，并根据感测到北极和南极的顺序确定方向。

3. 发明授权

US08207869B1 Position estimation for navigation devices 有权
标题翻译：导航装置的位置估计
公开(公告)号：US08207869B1
公开(公告)日：2012-06-26
申请号：US12971265
申请日：2010-12-17
申请人： Tom Judd , Bruce Graham , Toan Vu
发明人： Tom Judd , Bruce Graham , Toan Vu
IPC分类号： G08G1/123
CPC分类号： G01C21/165 , G01C21/206
摘要： A method of providing position estimation with a navigation device comprises periodically recording magnetic field strength of an area substantially surrounding a navigation device as a user of the navigation device traverses a select pathway. The method combines the recorded magnetic field strength with measurements from at least a dead reckoning portion of the navigation device to provide position estimates along the select pathway. The method further corrects each of the position estimates from a starting position on the select pathway, where each of the corrected position estimates have an error value below one or more previous position estimates and any intervening positions between each of the one or more previous position estimates and the starting position, with the error value corresponding to an error threshold based on the previous position estimates.
摘要翻译：使用导航装置提供位置估计的方法包括：当导航装置的用户穿过选择路径时，周期性地记录基本围绕导航装置的区域的磁场强度。该方法将记录的磁场强度与来自导航装置的至少航位推算部分的测量结合起来，以沿着选择路径提供位置估计。该方法进一步从选择路径的起始位置纠正每个位置估计，其中每个经过校正的位置估计具有低于一个或多个先前位置估计的误差值，以及该一个或多个先前位置估计值中的每一个之间的任何中间位置和起始位置，其中误差值对应于基于先前位置估计的误差阈值。

4. 发明申请

US20120173139A1 POSITION ESTIMATION FOR NAVIGATION DEVICES 有权
标题翻译：导航设备的位置估计
公开(公告)号：US20120173139A1
公开(公告)日：2012-07-05
申请号：US12971265
申请日：2010-12-17
申请人： Tom Judd , Bruce Graham , Toan Vu
发明人： Tom Judd , Bruce Graham , Toan Vu
IPC分类号： G01C21/00
CPC分类号： G01C21/165 , G01C21/206
摘要： A method of providing position estimation with a navigation device comprises periodically recording magnetic field strength of an area substantially surrounding a navigation device as a user of the navigation device traverses a select pathway. The method combines the recorded magnetic field strength with measurements from at least a dead reckoning portion of the navigation device to provide position estimates along the select pathway. The method further corrects each of the position estimates from a starting position on the select pathway, where each of the corrected position estimates have an error value below one or more previous position estimates and any intervening positions between each of the one or more previous position estimates and the starting position, with the error value corresponding to an error threshold based on the previous position estimates.
摘要翻译：使用导航装置提供位置估计的方法包括当导航装置的用户穿过选择路径时，周期性地记录基本围绕导航装置的区域的磁场强度。该方法将记录的磁场强度与来自导航装置的至少航位推算部分的测量结合起来，以沿着选择路径提供位置估计。该方法进一步从选择路径的起始位置纠正每个位置估计，其中每个经过校正的位置估计具有低于一个或多个先前位置估计的误差值，以及该一个或多个先前位置估计值中的每一个之间的任何中间位置和起始位置，其中误差值对应于基于先前位置估计的误差阈值。

5. 发明授权

US07890262B2 Position estimation for navigation devices 有权
标题翻译：导航装置的位置估计
公开(公告)号：US07890262B2
公开(公告)日：2011-02-15
申请号：US12059865
申请日：2008-03-31
申请人： Tom Judd , Bruce Graham , Toan Vu
发明人： Tom Judd , Bruce Graham , Toan Vu
IPC分类号： G01C21/00 , G08G1/123
CPC分类号： G01C21/165 , G01C21/206
摘要： A method of providing position estimation with a navigation device comprises periodically recording magnetic field strength of an area substantially surrounding a navigation device as a user of the navigation device traverses a select pathway. The method combines the recorded magnetic field strength with measurements from at least a dead reckoning portion of the navigation device to provide position estimates along the select pathway. The method further corrects each of the position estimates from a starting position on the select pathway, where each of the corrected position estimates have an error value below one or more previous position estimates and any intervening positions between each of the one or more previous position estimates and the starting position, with the error value corresponding to an error threshold based on the previous position estimates.
摘要翻译：使用导航装置提供位置估计的方法包括当导航装置的用户穿过选择路径时，周期性地记录基本围绕导航装置的区域的磁场强度。该方法将记录的磁场强度与来自导航装置的至少航位推算部分的测量结合起来，以沿着选择路径提供位置估计。该方法进一步从选择路径的起始位置纠正每个位置估计，其中每个经过校正的位置估计具有低于一个或多个先前位置估计的误差值，以及该一个或多个先前位置估计值中的每一个之间的任何中间位置和起始位置，其中误差值对应于基于先前位置估计的误差阈值。

6. 发明申请

US20090248301A1 POSITION ESTIMATION FOR NAVIGATION DEVICES 有权
标题翻译：导航设备的位置估计
公开(公告)号：US20090248301A1
公开(公告)日：2009-10-01
申请号：US12059865
申请日：2008-03-31
申请人： Tom Judd , Bruce Graham , Toan Vu
发明人： Tom Judd , Bruce Graham , Toan Vu
IPC分类号： G01C21/00
CPC分类号： G01C21/165 , G01C21/206
摘要： A method of providing position estimation with a navigation device comprises periodically recording magnetic field strength of an area substantially surrounding a navigation device as a user of the navigation device traverses a select pathway. The method combines the recorded magnetic field strength with measurements from at least a dead reckoning portion of the navigation device to provide position estimates along the select pathway. The method further corrects each of the position estimates from a starting position on the select pathway, where each of the corrected position estimates have an error value below one or more previous position estimates and any intervening positions between each of the one or more previous position estimates and the starting position, with the error value corresponding to an error threshold based on the previous position estimates.
摘要翻译：使用导航装置提供位置估计的方法包括当导航装置的用户穿过选择路径时，周期性地记录基本围绕导航装置的区域的磁场强度。该方法将记录的磁场强度与来自导航装置的至少航位推算部分的测量结合起来，以沿着选择路径提供位置估计。该方法进一步从选择路径的起始位置纠正每个位置估计，其中每个经过校正的位置估计具有低于一个或多个先前位置估计的误差值，以及该一个或多个先前位置估计值中的每一个之间的任何中间位置和起始位置，其中误差值对应于基于先前位置估计的误差阈值。

7. 发明授权

US5289474A Communication network interface testing system 失效
标题翻译：通信网络接口测试系统
公开(公告)号：US5289474A
公开(公告)日：1994-02-22
申请号：US150935
申请日：1988-02-01
申请人： Joseph D. Purcell , Bruce Graham
发明人： Joseph D. Purcell , Bruce Graham
IPC分类号： H04L12/26 , H04L1/24
CPC分类号： H04L43/50 , H04L12/2697
摘要： Data is sent over a digital communication network in a message frame which includes a header, a data field and an end delimiter. An analyzer for such a network evaluates the response of network interface devices to test message frames. Included in the analyzer is a mechanism for creating a test message frame which allows the user to define a number of pad-idle symbols, a sequence of symbols for a start delimiter, a series of symbols for the data field and a set of symbols for the end delimiter. The use defined test message frame may include invalid symbols to test the error response of the interface device. A transmitter is provided for repeatedly sending the test message frame to the network interface device with a given number of silence symbols inserted between each repetition. The analyzer has a section for receiving message frames back from the network interface device and sequentially comparing the symbols of the test message frame to those of the received message frame. A count is maintained of the number of received message frames which do not coincide with the test message frame.
摘要翻译：数据通过包括报头，数据字段和结束定界符的消息帧中的数字通信网络发送。用于这种网络的分析器评估网络接口设备对测试消息帧的响应。包括在分析器中的是用于创建测试消息帧的机制，该测试消息帧允许用户定义多个焊盘空闲符号，用于起始定界符的符号序列，用于数据字段的一系列符号，以及用于结束分隔符。使用定义的测试消息帧可以包括无效符号来测试接口设备的错误响应。提供发射机用于在每个重复之间插入给定数量的静音符号，将测试消息帧重复发送到网络接口设备。分析器具有从网络接口设备接收消息帧的部分，并且将测试消息帧的符号顺序地与接收到的消息帧的符号进行比较。维持与测试消息帧不一致的接收到的消息帧的数量的计数。

8. 发明授权

US4462053A Method for controlling a disc head 失效
标题翻译：光盘头的控制方法
公开(公告)号：US4462053A
公开(公告)日：1984-07-24
申请号：US280137
申请日：1981-07-02
申请人： Francis Lum , Bruce Graham , Samuel N. Irwin , Juan F. Velazquez
发明人： Francis Lum , Bruce Graham , Samuel N. Irwin , Juan F. Velazquez
IPC分类号： G05D3/12 , G11B5/596 , G11B21/08 , G11B21/10
CPC分类号： G11B21/085 , G11B5/59622
摘要： A method for positioning and maintaining a disc head over a desired track centerline on a disc rotatably carried on a disc drive. The distance between the current position of the disc head and the desired track centerline is monitored, and a signal generally proportional to that distance is applied to the disc head moving mechanism to cause the disc head to move toward the track centerline. The control signal is clipped if it exceeds predetermined maximum and minimum values.
摘要翻译：一种用于将盘头定位和保持在可旋转地承载在盘驱动器上的盘上的期望轨道中心线上的方法。监视盘头的当前位置与期望的轨道中心线之间的距离，并且将与该距离大致成比例的信号施加到盘头移动机构，以使盘头朝向轨道中心线移动。如果超过预定的最大值和最小值，则控制信号被剪切。

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