69 results about "Geographical database" patented technology

A navigation information system includes a communications system having a fixed part and at least one mobile part, the fixed part including data storage and processing for identifying the location of a mobile unit, generating guidance information appropriate to that location and transmitting it to the mobile unit. By locating most of the complexity with the service provider, in particular the navigation computer and geographical database, the system can be readily updated and the capital cost of the in-vehicle system, which in its simplest form may be a standard cellular telephone, can be minimized. The user makes a request for guidance information, and the system, having determined the user's present location, then transmits instructions to the user. The user's present location can be determined by a Satellite Positioning System.

A navigation information system includes a communications system having a fixed part and at least one mobile part, the fixed part including data storage and a processor identifying the location of a mobile unit, generating guidance information appropriate to that location and transmitting it to the mobile unit. By locating most of the complexity with the service provider, in particular the navigation computer and geographical database, the system can be readily updated and the capital cost of the in-vehicle system, which in its simplest form may be a standard cellular telephone, can be minimized. The user makes a request for guidance information, and the system, having determined the user's present location, then transmits instructions to the user. The user's present location can be determined by a Satellite Positioning System or the like.

A system and method for estimating velocity of a mobile station in a wireless communication system using time-frequency signal processing and a geographical database. The geographical database is used for prediction of ray trajectory and ray power to provide an estimate of propagation delay associated with database points.

A database is populated with geographic locations for network devices by providing a node on a network and making a connection into a network service provider (NSP) point of presence (POP) to obtain a connection to the network via the NSP. A message is then transmitted to the node over the network connection obtained from the NSP. The message is received at the node and a source network identifier is extracted from the message. The source network identifier is then associated with a known geographic location for the POP in a database. The foregoing steps are then repeated for multiple different POPs. Also, a database is populated with geographic locations for network devices by providing a node on a network and making a connection into a network service provider (NSP) point of presence (POP) to obtain a connection to the network via the NSP. A message is then transmitted to the node over the network connection obtained from the NSP. The message is received at the node and a source network identifier is extracted from the message. The route over the network between the node and the POP is then probed to obtain network identifiers for routers along the route. The foregoing steps are then repeated for multiple different POPs.

A method and system for providing security to large scale sites with large number of people comprising plurality of surveillance sensors, geographical database for the secured site, experts know-how database with plurality of potential scenarios. The system and method according to the invention can handle a large number of inputs, analyze the meaning of the input, prioritize operation, identify threats and produce instructions to the security personnel in response to events taking place in the secured site.

One or more systems, devices, and / or methods for three dimensional routing are disclosed. For example, one embodiment includes receiving image data selected based on a viewer perspective from a memory. The image data is correlated with a depthmap generated from an optical distancing system and correlated with route data calculated from an origin point to a destination point using a geographical database and a routing algorithm. The controller compares a first distance, from the viewer perspective to a point correlated with the route data, to a second distance, derived from the depth map at the point. If the comparison indicates that the first distance is closer to the viewer perspective than the second distance, the controller inserts at least one pixel of a navigation illustration into the image data. The image data including the navigation illustration is transmitted to or stored in a memory.

Wireless coverage data are associated with a geographic database that contains data that represent a road network in a geographic region. The wireless coverage data indicate areas within the geographic region in which navigation-related services or data from a navigation services provider are available wirelessly, or conversely, areas within the geographic region in which navigation-related services or data from a navigation services provider are not available wirelessly. An end user obtains the wireless coverage data. The wireless coverage data are used to indicate to the end user areas in which navigation-related services or data from the navigation services provider are available wirelessly or areas in which navigation-related services or data from the navigation services provider are not available wirelessly. The wireless coverage data may also be used to warn the end user when he / she is leaving an area in which navigation-related services or data from the navigation services provider are available wirelessly. Data for uncovered areas can be downloaded to an end user's computing platform while the end user is still within an area in which navigation-related data from the navigation services provider are available wirelessly.

A method is disclosed for representing locations in a geographic database in a manner that facilitates navigation and routing. A core map database includes data that represents public roads in a geographic region. Each of a plurality of location map databases includes data that represent facilities, such as businesses, stores, offices, or other places, that are physically located away from the public network and access to which requires travel on paths away from the public road network. Each of the facilities represented in the location map databases is assigned a location reference code that is associated with data from which a path connecting the facility and the public road network can be determined.

Embodiments include apparatus and methods for implementing lane charging for a roadway. A road segment in a geographic region is identified from a geographic database. The road segment may be identified based on the geographic position of a vehicle. A lane charging management device receives real time data related to the vehicle, the environment, or the electricity associated with the charging station. A lane charging command for a charging device associated with the road segment is generated in response to the real time data.

A travel routing system, method and program product therefor. A location detector detects a current location. A geographical database provides details of a given area. Selecting a destination causes a route generator to generate routes through the area from the current location. A flood simulator receives meteorological data and determines flooding along the routes. A risk-modeling unit determines the risk to travelers of using each route. Before the risk-modeling unit is deployed, it is trained off-line to model travel risks using incidents in an incident data store and simulated flooding in the vicinity of the incidents.

There are provided a mobile navigation terminal and an information distribution server that includes a geographical database for route searching and a mesh database storing therein meshes into which images produced from aerial photographs have been divided. The mobile navigation terminal includes GPS means; matching means for matching a measured location with a route to determine a current location; and a mesh data requesting part for calculating mesh data for which to request the information distribution server anew in connection with the current location. The mobile navigation terminal transmits a route search request and / or a mesh data distribution request to the information distribution server. The information distribution server, which includes a route searching part and a mesh dada distributing part, uses the geographical database to search for a route. If there exists a guide route in the mesh data as requested for, then the information distribution server adds the guide route data to the mesh data and distributes them to the mobile navigation terminal. The mobile navigation terminal displays the guide route on the distributed mesh data.

The invention provides location information management method, platform and system, and relates to the field of mobile communication. The location information management method for a mobile terminal comprises the steps of: sending a charging message including a user ID and base station ID information of the mobile terminal by a P-I gateway to an AAA server and the location management platform after the mobile terminal establishes PPP (Point-to-Point Protocol) connection with a network through the P-I gateway; obtaining the user ID and base station ID information of the mobile terminal by the location management platform from the received charging message; searching a geographical location description corresponding to the base station ID in a base station geographical database by the location management platform; binding the geographical location descriptions corresponding to the user ID and the base station ID by the location management platform, and storing in a user / location database for offering the location information of the mobile terminal for users requesting a location business. The invention can provide required user location information services for various applications requiring the location information.

The invention discloses a scenic spot scenery moving augmented reality method based on space relationship and image analysis. The method comprises the following steps that a geographical space data model facing an object is adopted for building a scenic spot geographical database according to the scenic spot scenery moving augmented reality guide demands and the scenic spot scenery space data organization characteristics; a built-in sensor of an intelligent mobile phone is adopted for obtaining the current position coordinates and the space orientation, an image pick-up view sight model based on multiple sensors is built, and the corresponding relationship between the real scenery images and the actual geographical space is generated; key frames are extracted from video image flows shot by the intelligent mobile phone and are fast divided sequentially through binaryzation and mathematical morphology methods; the visual matching between the real scenery space and the information space is realized through a measure of combining the image analysis with the space relationship, and the scenic spot scenery is identified; and the identified scenery is subjected to tracking registration by a moving detection method. The scenic spot scenery moving augmented reality method overcomes the defects of poor precision and low image identification technology efficiency of a space relationship realization method.

The invention discloses an individual position recommending system related to geographical features, and mainly aims to overcome the defects that the conventional collaborative filtering recommendation algorithm is poor in performance in a data sparseness scene. According to the technical scheme, different functional modules are coordinated with one another to achieve recommendation: a database acquiring module is adopted to acquire target information; a user database module is adopted to save target information in a user database; a user preference digging module is adopted to acquire a candidate position recommending list which is ordered according to user preference from a user database; a geographical database module is adopted to store the target information in a geographical database; a geographical feature digging module is adopted to acquire the candidate position recommending list which is ordered according to geographical features from the geographical database; a recommending module is adopted to acquire recommendation results by using the recommending list ordered according to user preference and the recommending list ordered according to geographical feature influence. As geographical features are taken into account, the problem of data sparseness is alleviated, and the individual position recommending system can be used in site push service based on a position social network.

The invention discloses a method for embedding geographical labels in network character information and a system. The method comprises the following steps: receiving an original text which is character information; analyzing geographical key words of the original text, obtaining an information set of first geographical key words in the original text and obtaining an information set of second geographical key words via conflict check; utilizing a preset geographical database to search the information of each geographical key word in the information set of the second geographical key words gradually and acquiring a geographical element matching information set; setting matching information with highest matching score as the relevance of geographical key word information; and generating a comprehensive text. The system comprises a receiver, an analyzer, a searcher, a relevance matching device and a comprehensive text output device. The invention increases the richness of word information expression with geographical features.

An apparatus for converting geographical geometrical content of a geographical database to map tiles may include a processor and a memory storing executable computer code that cause the apparatus to at least perform operations including modifying a geographical database based in part on adding items of data arranged in fields based on analyzing values corresponding to geometry information. The geometry information is associated with records of the geographical database. The computer program code may further cause the apparatus to determine a set of tiles at a predetermined zoom level including geographical information of respective records and may update the records to include data associated with minimum and maximum x and y values of the tiles. The computer program code may further cause the apparatus to determine minimum and maximum x and y values that define a rectangular block(s) of map tiles. Corresponding computer program products and methods are also provided.

The invention discloses a high-robustness geographical database watermark method suitable for a polygon type, which comprises a watermark embedding process and watermark detecting process. The watermark embedding process specifically comprises the steps of generating a robust ground feature identification for each ground feature, dividing all the ground features into a plurality of groups according to the robust ground feature identifications and repeatedly embedding one watermark position in each group; and similar to the watermark embedding process, the watermark detecting process specifically comprises the steps of generating robust ground feature identifications, grouping the ground features, carrying out variable-step-size quantitative demodulation and watermark vote, and finally judging ownership. The high-robustness geographical database watermark method utilizes the highest h effective position of average feature distance of the ground features as a robust ground feature mark which does not change with the translation, rotation, simplification, peak interpolation, noise addition, tuple deletion, tuple addition and tuple modification of the geographical data, therefore, thehigh-robustness geographical database watermark method has good capabilities of resisting against geometrical attack (except for zooming), peak attach and tuple attack.

A proximity alert system includes a non geographically based information set with non-geographical based input characteristics associated with an individual that are from online sources. Further included is a geographically based database with geographically based input that is also associated with the individual that are also from online sources. In addition, a query component based upon a member initiated search for the selected individual includes a geographic tag for each selected individual. Also included are programs having instructions for executing the member initiated search in the non geographical and geographical databases that outputs a search result that matches the member initiated search, plus instructions to map a proximate path as between the member geographic tag and the selected individual geographic tag, wherein operationally the member can view the selected individuals associated information that include geographic mapping between the member and the individual.

An apparatus and method are disclosed for calculation of a dangerous road strand of a roadway. Probe data for a roadway having multiple lanes is identified. A subset of the probe data for a predetermined lane is selected and values for a change in velocity for multiple sequences in the subset of probe data are calculated. Based on clustering for the change in velocity and a danger value, the dangerous road strand is identified. The dangerous road strand is stored in a geographic database in association with the lane for the roadway.

According to the first aspect of the present invention, there is a data server (110) providing modified route information to a first user terminal (130) used by a first user, comprising a receiving unit (114) configured to receive a request from the first user terminal for requesting a second user terminal (120) used by a second user to modify route information, a geographical database (113) configured to store geographical data, a route information generation unit (112) configured to generate the route information indicating a route from a first location to a second location, using the geographical data, and a transmitting unit (115), configured to transmit a route modification request with the generated route information to the second user terminal. The receiving unit is further configured to receive modified route information from the second user terminal (120). The transmitting unit is further configured to transmit the modified route information to the first user terminal (130).

For mobile access to a stationary data network (18), a substantially location-dependent transmission bandwidth is provided by a wireless interface (22, 26 to 32). The aim of the invention is to avoid movement-related limitations during the data transmission in a mobile terminal (14, 16). In order to achieve said aim, according to the invention a geodatabase (38) is provided, in which historical values relating to wireless interface parameters are stored for a plurality of locations (46, 50) and for predetermined times (T1, T2). From said stored values, probable values are then ascertained for future data transmissions. For this purpose, at the outset a probable route for movement (12) of the mobile terminal is ascertained and, in relation to locations (46, 50) along the route for moving, it is ascertained when (T1, T2) the mobile terminal (14, 16) will probably arrive there. By means of the geodatabase (38), it is then ascertained which transmission bandwidths on the locations (46, 50) are probably available at the locations (46, 50). During the broadcasting of data, at least one data transmission is then regulated in accordance with the transmission bandwidths probably available along the route for movement (12).

The invention discloses a remote sensing image water body extraction method based on sub-pixel positioning. In the method, the sub-pixel positioning thinking is introduced, which fully considers the spatial correlation of sub-pixels and the correlation of the sub-pixels inside the pixels. The method is able to perform the positioning of the water body of the optimized linear spectrum mixture dissolution result to finally obtain the water body extraction result of the sub-pixel dimensions. The method increases the accuracy for the land water body extraction algorithm, and through the sub-pixel positioning method, it is possible to obtain more refined water body structure information of the sub-pixel three dimensions from the mixed pixels, therefore, improving the precision for water body extraction. For the frequent change of the land water body size, the method of the invention provides convenience for the maintenance and updating of the water body information of the basic geographical database at various national levels.

A method of predicting the level of radio field and / or the duration of radio propagation of a mobile telephone network for the coverage of a cell using the ray tracing technique and utilizing geographical databases, wherein the database directly utilized is a matrix base composed of pixels, each pixel carrying at least an information item specific to the type of ground cover and an information item specific to the height of the ground cover, a vectorization processing is applied to the matrix base to linearize the contours of obstacles encountered while rays are fictitiously traced, the rays according to the obstacles encountered being either reflected or diffracted and scattered, whilst the global attenuation and / or propagation duration is calculated, the vectorization processing of the contours of obstacles being applied to matrix bases to linearize the contours of obstacles encountered by forming straight lines whose positions and various angles are known accurately.

The invention relates to a method for acquiring a more detailed address to position a computer geographical position by positioning internet ip, acquiring ip address and time, and inquiring telecommunication ip online records by polices. The method comprises the following steps that: firstly, a program for acquiring ip is arranged on a computer, and implanted into a cmos memory for storage; the program for acquiring the ip is loaded by a start-up system; the program for acquiring the ip continuously sends data such as current actual ip of the computer to an appointed server; a far end server stores the data sent by the program for acquiring the ip; and the geographical position of the ip is positioned by inquiring an ip geographical database according to the ip address. The current geographical position of the program for acquiring the ip can be inquired by login of the far end server. The method is adopted to acquire the ip, store the acquired data, and then position the current geographical position of the computer according to the ip.

A distance-based score approximation having improved computational efficiency is provided. Responsive to receiving a score request, a computing entity identifies an observation point based on a location indicated in the score request and defines a set of annuli comprising a plurality of concentric annuli centered on the observation point and defined by a predetermined maximum radius. The computing entity queries a geographic database for map information corresponding to geometry elements located within the predetermined maximum radius of the observation point and determines an intersection of each geometry element with each annulus. The computing entity determines a contribution for each intersection based at least in part on a size of the intersection, a measure assigned to the corresponding geometry element, and a representative radius of the corresponding annulus. The computing entity aggregates the contribution for each intersection to determine the distance-based score approximation and provides the distance-based score approximation.