公开(公告)号：US06665611B1

公开(公告)日：2003-12-16

申请号：US09884239

申请日：2001-06-19

申请人： David R. Oran ,  Silvano Gai

发明人： David R. Oran ,  Silvano Gai

IPC分类号： G01S2100

CPC分类号： G01S19/17 ,  G01S5/0027 ,  G01S5/0236 ,  G01S2205/006

摘要： A system automatically discovers and maintains geographic location information for entities and devices making up a computer network. The system preferably includes a computing unit and a geographic location generator, such as a Global Positioning System (GPS) receiver. The computing unit includes a location discovery entity and a message generator. The GPS receiver, which is mounted to and in communication with the computing unit, may be augmented with an inertial navigation unit to facilitate the generation of location information inside of buildings where GPS signals can be difficult to receive. The computing unit further includes a network communications facility so that it can communicate with one or more network devices, such as a network switch. The switch includes a location recording/reporting entity and a location database. Physical coordinates of network entities or devices are obtained by the GPS receiver and/or-inertial navigation unit and transmitted to the network switch, and the recording/reporting entity stores the physical coordinates at the location database.

摘要翻译： 系统自动发现和维护构成计算机网络的实体和设备的地理位置信息。 该系统优选地包括计算单元和诸如全球定位系统（GPS）接收机的地理位置发生器。 计算单元包括位置发现实体和消息发生器。 安装在计算单元上并与计算单元通信的GPS接收机可以用惯性导航单元进行增强，以便于在GPS信号难于接收的建筑物内产生位置信息。 计算单元还包括网络通信设施，使得其可以与诸如网络交换机的一个或多个网络设备进行通信。 交换机包括位置记录/报告实体和位置数据库。 网络实体或设备的物理坐标由GPS接收器和/或惯性导航单元获得并发送到网络交换机，并且记录/报告实体将物理坐标存储在位置数据库。

公开(公告)号：US06640188B2

公开(公告)日：2003-10-28

申请号：US10140569

申请日：2002-05-07

申请人： Masaya Hashida

发明人： Masaya Hashida

IPC分类号： G01S2100

CPC分类号： G01C21/28

摘要： A car navigation apparatus for determining entry/exit of a vehicle into/from a parking area based on a running state of the vehicle without using a dedicated parking area database. Upon entry into a parking area, the entry is determined by totally checking the speed of the vehicle, the presence or absence of turn-round motion, an error in a forward and backward direction of the vehicle, estimated by map matching, the presence or absence of front and rear intersections, and the widths of intersecting roads. On the other hand, upon exit from a parking area, the exit is determined by totally judging the detected speed of the vehicle, the presence or absence of a straight running distance, the presence or absence of a nearby road extending in parallel with the course of the vehicle, and the width of the parallelly extending road.

公开(公告)号：US06539305B2

公开(公告)日：2003-03-25

申请号：US10074993

申请日：2002-02-13

申请人： Anthony R. Pratt

发明人： Anthony R. Pratt

IPC分类号： G01S2100

CPC分类号： G01S19/30 ,  G01S5/0036 ,  G01S19/09 ,  G01S19/29 ,  G01S19/41 ,  G01S19/43

摘要： Positioning apparatus for use in a moving vehicle includes circuitry arranged to process signals received from GPS satellites, and to provide signals in response thereto from which the position of the apparatus can be calculated at a remote station. The apparatus provides, for each satellite in view, carrier frequency estimation signals, samples of the carrier signals and code tracking signals to a data transmission device, which modulates the signals onto a carrier prior to transmission to the remote station. A carrier loop reconstruction device and a location processor in the remote station co-operate to determine the location of the positioning apparatus. A memory device may record signals received over a period of time, from which mission replay may be performed.

公开(公告)号：US06591190B2

公开(公告)日：2003-07-08

申请号：US09842012

申请日：2001-04-26

申请人： Sosuke Nishida ,  Masato Kazama

发明人： Sosuke Nishida ,  Masato Kazama

IPC分类号： G01S2100

CPC分类号： G01C21/3644 ,  G01C21/3638 ,  G08G1/0969

摘要： A navigation system for displaying guidance in accordance with map data is provided. The navigation system includes a landmark displaying device for displaying structures corresponding to the map data as landmarks. The landmark displaying device sets reference positions in the landmarks and determines the location and direction of a landmark so that it would face to a road nearby.

摘要翻译： 提供了一种用于根据地图数据显示引导的导航系统。 导航系统包括用于将与地图数据相对应的结构显示为地标的地标显示装置。 地标显示设备在地标中设置参考位置，并确定地标的位置和方向，使其将面向附近的道路。

公开(公告)号：US06542819B1

公开(公告)日：2003-04-01

申请号：US09762506

申请日：2001-04-20

申请人： Ernö Kovacs ,  Oliver Schramm

发明人： Ernö Kovacs ,  Oliver Schramm

IPC分类号： G01S2100

CPC分类号： H04W64/00 ,  G01C21/28 ,  G01S5/0205 ,  G01S5/0263 ,  G01S19/48 ,  H04L29/06 ,  H04W48/18

摘要： A technique for the determination of the current position of a mobile device based on a plurality of geolocation positioning services is proposed. Different position information sources are accessed wirelessly to acquire position information. The position information thereby comprises respectively at least information about the position of the corresponding position information source. At least one of the plurality of accessed position information sources is selected depending on the values of operation parameters, such as for example availability, cost, speed, power consumption and quality of the position information, wherein the operation parameters are associated with the different position information sources. The position of the mobile device is then determined based on the position information of the at least one selected position information source.

摘要翻译： 提出了一种基于多个地理定位服务来确定移动设备的当前位置的技术。 无线访问不同的位置信息源，以获取位置信息。 因此，位置信息分别至少包括关于相应位置信息源的位置的信息。 根据操作参数的值，例如可用性，成本，速度，功耗和位置信息的质量来选择多个访问位置信息源中的至少一个，其中操作参数与不同位置相关联 信息来源。 然后，基于所述至少一个选择的位置信息源的位置信息来确定移动设备的位置。