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1. 发明授权

US08560224B2 Method and apparatus for establishing optimum route to intersection destination for navigation system 有权
公开(公告)号：US08560224B2
公开(公告)日：2013-10-15
申请号：US12082722
申请日：2008-04-14
申请人： Tien Vu , Lei Zhao
发明人： Tien Vu , Lei Zhao
IPC分类号： G01C21/00 , G01C21/34 , G08G1/123
CPC分类号： G01C21/3446
摘要： A method and apparatus for a navigation system for calculating a route to an intersection destination establishes an optimum route to the intersection. The method and apparatus creates a virtual zero-length dummy link, connects one end of the virtual zero-length dummy link to all link-spot pairs indicating an original intersection destination, sets another end of the virtual zero-length dummy link as a temporary destination, calculates possible routes between the temporary destination and a current vehicle position and selects the optimum route. After determining the optimum route, the navigation system removes the virtual zero-length dummy link and starts the route guidance operation to the intersection destination.

2. 发明申请

US20130073204A1 METHOD AND APPARATUS FOR ADJUSTING DISTANCE FOR GENERATING MANEUVER INSTRUCTION FOR NAVIGATION SYSTEM 有权
标题翻译：调整距离的方法和装置，用于生成导航系统的MANEUVER指令
公开(公告)号：US20130073204A1
公开(公告)日：2013-03-21
申请号：US13658605
申请日：2012-10-23
申请人： Tien Vu , Clayton Napohaku
发明人： Tien Vu , Clayton Napohaku
IPC分类号： G01C21/36
CPC分类号： G01C21/3655
摘要： A distance adjustment method and apparatus for a navigation system produces a maneuver instruction for an intersection at the most appropriate timing and location during the route guidance. The method includes the steps of: searching an upcoming intersection on the calculated route that requires the user to make a turn therein; retrieving data concerning the upcoming intersection from a map database; adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.
摘要翻译：用于导航系统的距离调整方法和装置在路线引导期间在最合适的时间和位置处产生交叉路口的操纵指令。该方法包括以下步骤：在要求用户转弯的所计算的路线上搜索即将到来的交叉路口; 从地图数据库检索关于即将到来的十字路口的数据; 通过评估检索到的关于交叉路口的数据，调整距离交点参考点的最终距离; 并且在用户已经从交叉点的参考点到达调整的最终距离的定时产生操纵指令，从而通知用户在交叉路口进行转弯操纵。

3. 发明授权

US07945383B2 Route determination method and apparatus for navigation system 有权
标题翻译：导航系统路线确定方法及装置
公开(公告)号：US07945383B2
公开(公告)日：2011-05-17
申请号：US11109991
申请日：2005-04-20
申请人： Ihung Tu , David Schaaf , Tien Vu
发明人： Ihung Tu , David Schaaf , Tien Vu
IPC分类号： G01C21/26
CPC分类号： G01C21/3446
摘要： A navigation system is able to find an optimum route to a destination even when a large non-digitized area exists between a starting point to the destination. The navigation system produces processing points based on a particular shape and size of the large non-digitized area and determines whether such processing points should be used for route search operations. When it is determined that the route search operation is effective, the navigation system performs A* algorithm search operations with respect to the start point, processing points and the destination and detects an optimum route to detour the large non-digitized area.
摘要翻译：即使在起始点到目的地之间存在大的非数字化区域，导航系统也能够找到到目的地的最佳路线。导航系统基于大的非数字化区域的特定形状和大小产生处理点，并且确定这样的处理点是否应当用于路线搜索操作。当确定路线搜索操作有效时，导航系统针对开始点，处理点和目的地执行A *算法搜索操作，并且检测到绕过大非数字化区域的最佳路线。

4. 发明申请

US20090216431A1 Method and apparatus for adjusting distance for generating maneuver instruction for navigation system 审中-公开
标题翻译：调整导航系统机动指令距离的方法和装置
公开(公告)号：US20090216431A1
公开(公告)日：2009-08-27
申请号：US12072408
申请日：2008-02-26
申请人： Tien Vu , Clayton Napohaku
发明人： Tien Vu , Clayton Napohaku
IPC分类号： G01C21/36
CPC分类号： G01C21/3655
摘要： A distance adjustment method and apparatus for a navigation system produces a maneuver instruction for an intersection at the most appropriate timing and location during the route guidance. The method includes the steps of: searching an upcoming intersection on the calculated route that requires the user to make a turn therein; retrieving data concerning the upcoming intersection from a map database; adjusting a final distance from a reference point of the intersection by evaluating the retrieved data concerning the intersection; and generating a maneuver instruction at a timing when the user has reached the adjusted final distance from the reference point of the intersection, thereby notifying the user to make a turning maneuver at the intersection.
摘要翻译：用于导航系统的距离调整方法和装置在路线引导期间在最合适的时间和位置处产生交叉路口的操纵指令。该方法包括以下步骤：在要求用户转弯的所计算的路线上搜索即将到来的交叉路口; 从地图数据库检索关于即将到来的十字路口的数据; 通过评估检索到的关于交叉路口的数据，调整距离交点参考点的最终距离; 并且在用户已经从交叉点的参考点到达调整的最终距离的定时产生操纵指令，从而通知用户在交叉路口进行转弯操纵。

5. 发明授权

US07561964B2 Off-route recalculation method and apparatus for navigation system 有权
标题翻译：导航系统的离线重新计算方法和装置
公开(公告)号：US07561964B2
公开(公告)日：2009-07-14
申请号：US11326184
申请日：2006-01-05
申请人： Tien Vu
发明人： Tien Vu
IPC分类号： G01C21/30 , G01C21/32
CPC分类号： G01C21/3415
摘要： An off-route recalculation method and apparatus for a navigation system calculates a new route when a vehicle is deviated from an originally calculated route to a destination. The method is comprised of the steps of: detecting whether a user vehicle has deviated from an originally calculated route; predicting a path that a user is likely to take until a new route to the destination is calculated; calculating a predicted distance that the user vehicle advances through the predicted path during a time the new route to the destination is calculated and during a turn prepare time, thereby determining a start position of the new route; calculating the new route to the destination incorporating the start position.
摘要翻译：用于导航系统的非路线重新计算方法和装置计算当车辆从原始计算的路线偏离到目的地时的新路线。该方法包括以下步骤：检测用户车辆是否偏离原始计算的路线; 计算用户可能采取的路径，直到计算到目的地的新路由; 计算在到达目的地的新路线的时间期间和在转弯准备时间期间用户车辆前进预测路径的预测距离，从而确定新路线的开始位置; 计算到包含起始位置的目的地的新路线。

6. 发明申请

US20070156334A1 Off-route recalculation method and apparatus for navigation system 有权
标题翻译：导航系统的离线重新计算方法和装置
公开(公告)号：US20070156334A1
公开(公告)日：2007-07-05
申请号：US11326184
申请日：2006-01-05
申请人： Tien Vu
发明人： Tien Vu
IPC分类号： G01C21/00
CPC分类号： G01C21/3415
摘要： An off-route recalculation method and apparatus for a navigation system calculates a new route when a vehicle is deviated from an originally calculated route to a destination. The method is comprised of the steps of: detecting whether a user vehicle has deviated from an originally calculated route; predicting a path that a user is likely to take until a new route to the destination is calculated; calculating a predicted distance that the user vehicle advances through the predicted path during a time the new route to the destination is calculated and during a turn prepare time, thereby determining a start position of the new route; calculating the new route to the destination incorporating the start position.
摘要翻译：用于导航系统的非路线重新计算方法和装置计算当车辆从原始计算的路线偏离到目的地时的新路线。该方法包括以下步骤：检测用户车辆是否偏离原始计算的路线; 计算用户可能采取的路径，直到计算到目的地的新路由; 计算在到达目的地的新路线的时间期间和在转弯准备时间期间用户车辆前进预测路径的预测距离，由此确定新路线的开始位置; 计算到包含起始位置的目的地的新路线。

7. 发明申请

US20170185722A1 GRAPHICAL HANDWRITING SIGN-IN METHOD AND SYSTEM 审中-公开
公开(公告)号：US20170185722A1
公开(公告)日：2017-06-29
申请号：US15190117
申请日：2016-06-22
申请人： KHUE NGOC VU , DUNG TIEN VU , THU MINH VU , TRUONG MIEN VU , HIEU NGOC VU
发明人： KHUE NGOC VU , Dung Tien Vu , Thu Minh Vu , Truong Mien Vu , Hieu Ngoc Vu
IPC分类号： G06F19/00 , H04L29/06 , G06K9/18 , G06F3/0488 , G06K9/00
CPC分类号： G06F19/328 , G06F3/04883 , G06K9/00154 , H04L63/08 , H04L63/126
摘要： A computer network system and method of receiving, storing, and authenticating a user's presence and information obtained at geographical user-location is disclosed. A first device displays a plurality of input regions on its display screen. Utilizing a stylus or fingertip, the user enters hand-written inputs in those regions. The first device transmits the user hand-written inputs and geographical location to a server and subsequently removes the displayed plurality of hand-written inputs from the plurality of input regions for the next user. A server receives the user's hand-written inputs and location, associates the location to the user, stores them, and transmits them to a second device where, in real time, they are displayed on a display screen of the second device, facilitating authentication and verification of the user's presence and user's hand-written inputs. In addition, authenticating documents comprising the hand-written inputs may be generated for audits.

8. 发明授权

US08165802B2 Method and apparatus of vehicle navigation system for detecting and avoiding city with crowded streets 有权
标题翻译：用于检测和避免拥挤街道的城市车辆导航系统的方法和装置
公开(公告)号：US08165802B2
公开(公告)日：2012-04-24
申请号：US12247154
申请日：2008-10-07
申请人： Hong Ta , Tien Vu
发明人： Hong Ta , Tien Vu
IPC分类号： G01C21/00
CPC分类号： G01C21/3453
摘要： A system for comparing various routes, identifying delays among the routes, and selecting a more desirable route, even if the desirable route is not the shortest distance, is described. In one embodiment, the more desirable route is the faster route. In one embodiment, the more desirable route is a route with fewer in-route delays. In one embodiment, the system loads a map from a memory and retrieves road level information based on position information of roads and delays. The roads in the map are described at various levels of detail, wherein lower levels contain more detail and relatively higher levels that contain less detail. One embodiment includes detecting a route having links with a substantially larger number of delays and adding an additional penalty cost for the links at higher levels based on penalties computed from the links at lower level road levels. If a current road level is not the highest, one embodiment include adding the additional penalty cost into a “penalty list” of a higher level link having the links of a current road level in order to detect the higher links with a large number of delays while calculating route at a higher level. When calculating a route (or portion of a route) at a higher road level, an additional penalty cost is added to the higher level links if based on the penalty list.
摘要翻译：描述了用于比较各种路线，识别路线之间的延迟并且选择更期望的路线的系统，即使期望的路线不是最短的距离。在一个实施例中，更理想的路由是更快的路由。在一个实施例中，更期望的路由是具有较少路由内延迟的路由。在一个实施例中，系统从存储器加载地图，并且基于道路和延迟的位置信息来检索路面信息。地图中的道路以各种细节描述，其中较低层次包含更多的细节和相对较高的层次，其含有较少的细节。一个实施例包括检测具有大量更多数量的延迟的链路的路由，并且基于在较低级别路线级别的链路计算的惩罚，在较高级别增加链路的附加惩罚代价。如果当前的道路水平不是最高的，一个实施例包括将额外的惩罚代价添加到具有当前道路等级的链路的较高级链路的“惩罚列表”中，以便以大量的延迟来检测较高的链路同时在较高层次上计算路线。在较高道路等级计算路线（或路线的一部分）时，如果基于惩罚列表，则向较高级别的链接添加额外的惩罚代价。

9. 发明授权

US09927251B2 Method and apparatus for detecting and correcting freeway-ramp-freeway situation in calculated route 有权
公开(公告)号：US09927251B2
公开(公告)日：2018-03-27
申请号：US12380180
申请日：2009-02-24
申请人： Tien Vu , Shinobu Doi
发明人： Tien Vu , Shinobu Doi
IPC分类号： G01C21/00 , G01C21/34 , G08G1/0968
CPC分类号： G01C21/3461 , G08G1/096827
摘要： A method detects a particular freeway-ramp-freeway situation in a calculated route and corrects the route by replacing the freeway-ramp-freeway situation with all-freeway segments. The method includes the steps of: establishing a calculated route to a destination; examining the calculated route to detect whether there is a first point where the calculated route exits a freeway and a second point where the calculated route enters a freeway; evaluating map data to determine whether the freeway exited and the freeway entered are the same freeway; and replacing road segments of the calculated route between the first point and the second point constituting the freeway-ramp-freeway situation with freeway segments between the first point and the second point, thereby avoiding the freeway-ramp-freeway situation.

10. 发明申请

US20100222995A1 Link promotion method and apparatus for improving route search performance for navigation system 有权
标题翻译：用于提高导航系统路线搜索性能的链接推广方法和装置
公开(公告)号：US20100222995A1
公开(公告)日：2010-09-02
申请号：US12380525
申请日：2009-02-28
申请人： Ihung Tu , Lei Zhao , Ashish Patel , Tien Vu , Luoyi Ren , Serge Orlov , Ankur Bhatia
发明人： Ihung Tu , Lei Zhao , Ashish Patel , Tien Vu , Luoyi Ren , Serge Orlov , Ankur Bhatia
IPC分类号： G01C21/00
CPC分类号： G01C21/3446
摘要： A method and apparatus for link promotion for a navigation system allows expansion of search in a lower layer to determine an optimum climbing point to an upper layer to search an optimum route. The link promotion procedure includes the steps of determining whether an upper link exists for a lower link, setting the upper link as a promoted link if such an upper link exists even if a climbing node point does not exist that connect the lower link and the upper link, and comparing a candidate normal route and a promoted route to find an optimum route.
摘要翻译：用于导航系统的链接促进的方法和装置允许在较低层中扩展搜索以确定到上层的最佳攀登点以搜索最佳路线。链路提升过程包括以下步骤：确定是否存在较低链路的上链路，如果存在上链路，则将上链路设置为提升链路，即使不存在连接下链路和上层链路的爬坡节点链接，并比较候选正常路线和促销路线以找到最佳路线。

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