230 results about "Mobile navigation" patented technology

A mobile navigation system implemented as an embedded system in a vehicle is easy to use, does not detract the driver's attention from the road, and limits the number of choices presented to the user of the navigation system according to a predetermined set of preferences or personalized information. Choices are filtered according to a set of driver preferences, according to the vehicle's geographic position, direction of motion, and the driver's intended itinerary. The itinerary, including intermediate stops, is calculated on an external computing system. The information is downloaded from the computing system to a memory device such as, for example, a smart card. The information is then transferred from the smart card to the embedded vehicle navigation system. In one application of the invention, a kiosk located at a car rental agency may be used to create and store personalized navigation information onto a smart card which the customer then inserts into the vehicle navigation system that is installed in the rental car.

Method, apparatus and system for improving navigation using mobile devices by adding previously captured media to navigation maps provided by mobile device. Added media include still images and video clips. Media captured at the same location using various camera orientations are available in an image database. Images in database include metadata indicating location, orientation and other parameters associated with each image. User location and pose are matched against metadata indicating location and camera orientation of captured images. User motion may also be matched to metadata indicating camera motion of stored video clips. Other parameters like lighting, seasonal factors, and tasks of walking, biking or driving may also be matched. User pose may be derived from an accelerometer embedded in the mobile device. Some or all of user parameters desired by user may be directly input to mobile device by user instead of being automatically detected by mobile device.

The present invention proposes to streamline the process by replacing most of the manual entry and mobile navigation through a mobile client application that will allow the user to [a] capture a barcode using a camera phone or any other camera-equipped communicating device such as a PDA with a camera attachment or a internet connected computer with a web-cam and [b] automatically send—or prepare the transmission of—the relevant information to the vendor directly or through the usage of a centralized platform.

A system providing three-dimensional visual navigation for a mobile unit includes a location calculation unit for calculating an instantaneous position of the mobile unit, a viewpoint control unit for determining a viewing frustum from the instantaneous position, a scenegraph manager in communication with at least one geo-database to obtain geographic object data associated with the viewing frustum and generating a scenegraph organizing the geographic object data, and a scenegraph renderer which graphically renders the scenegraph in real time. To enhance depiction, a method for blending images of different resolutions in the scenegraph reduces abrupt changes as the mobile unit moves relative to the depicted geographic objects. Data structures for storage and run-time access of information regarding the geographic object data permit on-demand loading of the data based on the viewing frustum and allow the navigational system to dynamically load, on-demand, only those objects that are visible to the user.

The invention discloses an internet of things-based intelligent building monitoring managing system, which mainly realizes remote monitoring and managing on an intelligent building. The system comprises four parts of a building equipment managing system, a firefighting linkage alarm system, a positioning navigation system and a security system; the building equipment managing system realizes concentrated managing on building equipment based on a tree cluster network established by an intelligent sensor module; the firefighting linkage alarm system adopts an optimized A*algorithm to search for an optimal fire escape path; the positioning navigation system is achieved by a mobile navigation robot covering floors of the building, and if a user inputs a destination, the navigation robot directly inserts virtual scene information into a reality scene, and displays a direction mark; the security system is realized by a mobile patrolling robot based on a GPS / DR combined navigation technology, and an intruder is alarmed after being found, the current intelligentized managing requirements of the building are met and the system is suitable for a high-rise building such as a commercial building with a large scale.

The present invention provides methods and systems that enable a mobile navigation receiver to accurately determine its trajectory with non-current ephemeris in stand-alone mode. In an embodiment, the receiver computes the position for the same location using non-current ephemeris and current ephemeris at different time instances. The receiver then determines a position correction by finding the difference between these two computed positions, and applies this correction to the trajectory generated with non-current ephemeris to obtain a more accurate trajectory. In another embodiment, the receiver computes an initial position of the receiver using non-current ephemeris and finds the difference between the computed initial position and an accurate approximation of the initial position. The receiver then shifts the subsequent receiver trajectory computed using non-current ephemeris by the difference to obtain a more accurate trajectory.

The invention relates to a mobile navigation device, which alternately operates in first and second modes. In the first mode, a satellite positioning module is started up, a dead reckoning module is closed, and a processor calculates a position coordinate according to a satellite navigation signal. In the second mode, the satellite positioning module is closed, the dead reckoning module is started up, and the processor updates the position coordinate according to movement and rotation.

A mobile navigation method and system comprise a sensor, a computer processing unit and a driving mechanism. The sensor is used for collecting environmental data. The computer processing unit is used for calculating the collected data from the sensor to build a 3D map, and a path planning from a start point to a destination point is provided according to the 3D map. The driving mechanism is used for driving a mobile navigation system to move according to the path provided by the computer processing unit. The mobile navigation method and system further provide a map building method and a path planning method by using the mobile navigation system.

In embodiments of the present invention improved capabilities are described for a mobile environment speech processing facility. The present invention may provide for the entering of text into a navigation software application resident on a mobile communication facility, where speech may be recorded using the mobile communications facility's resident capture facility. Transmission of the recording may be provided through a wireless communication facility to a speech recognition facility. Results may be generated utilizing the speech recognition facility that may be independent of structured grammar, and may be based at least in part on the information relating to the recording. The results may then be transmitted to the mobile communications facility, where they may be loaded into the navigation software application. In embodiments, the user may be allowed to alter the results that are received from the speech recognition facility. In addition, the speech recognition facility may be adapted based on usage.

This invention relates to a method for updating digital maps and for matching global navigation devices to a digital map. Such navigation devices rely upon GPS signals (20, 24) from satellites (22, 26). One well-documented cause of position error in navigation devices arises from the phenomenon of GPS multi-path. It has been observed that GPS multi-path errors in the latitude / longitude direction are highly correlated with errors in altitude. By comparing altitude value of GPS probe data with reference specifications for altitude, unreliable probe data (outliers) can be easily identified and culled. Such techniques can be used as well by a mobile navigation device to confirm a match to a particular road segment and if not revert to other positioning techniques such as inertial guidance systems and the like. If the local altitude is not reliably known, an estimation can be derived directly from the collected probe data.

An interface is provided to a mobile navigation system in which an optical image of a point-of-interest acquired by cellular telephone devices is an input to the system. Textual and optionally other location information is extracted from the image, and used by the navigation system to identify coordinates and vectors relating to the point-of-interest. The results are stored and may be subsequently recalled to provide mapping and routing information to the cellular telephone device, whose position relative to the point-of-interest may have changed. Optical images may be uploaded from telephone device to the navigation system automatically or interactively, and can be processed remotely, generally without further user interaction.

The invention relates to a method for updating an embedded mobile electronic map data base in real time, wherein map elements in the electronic map data base is firstly coded, and the IDs of the map elements are determined; the data of the relationship among the map elements is stored into the corresponding memory area of a map information storing device according to the IDs of the map elements; one item or a plurality of items of data of the relationship among the map elements can be extracted from the memory area of the map data, and the IDs of the map elements and the update state thereof are be obtained; data is acquired from a GPS / GPRS module and then is converted into geographic data compatible with the map data base, and whether the current travelling route belongs to certain map element is judged according to the coordinate figures of longitude and latitude; whether the map elements requires addition or modification is hinted according to the judged result; or by setting the travelling time threshold value, the map elements are automatically added when being more than the threshold value; finally, the updated data and the update state are stored into the map information memory area, thus electronic map data of a mobile navigation device can be stored and updated.

A navigation system for mobile use includes street map data used for creating a dynamic map display tracking movement of the vehicle and includes crime data used to provide an overlay on the dynamic display indicating a risk of crime to the vehicle's occupants from the surrounding area. Crime data may be harvested from police websites and / or generated using statistical correlation techniques from other proxy information. Presented crime data indicate crime risk, type of crime, crime date or time of occurrence, and linkage to environmental conditions such as type of weather, temperature, and moonlight.

The invention discloses a fusion method of an indoor SLAM map based on visual perception and laser detection. The method comprises the steps of the laser detection, constructing a three-dimensional point cloud map, filtering and projection processing and map fusion; through the steps, on the one hand, a two-dimensional laser detection map containing ground height information is obtained, on the other hand, a three-dimensional visual perception point cloud map is obtained, and then after the three-dimensional visual perception point cloud map is filtered and projected, a two-dimensional visualperception map containing obstacle information is obtained; and finally, the two-dimensional laser detection map and the two-dimensional visual perception map are fused to obtain a two-dimensional fusion map. According to the fusion method of the indoor SLAM map based on the visual perception and the laser detection, the influential obstacle information in the process of robot navigation can be fused into two-dimensional map information to generate a two-dimensional map with high accuracy and rich information, and the practicability in an indoor environment for robot mobile navigation and pathplanning is high.

A mobile navigation system gyro module comprises: first and second gyro sensors outputting angular velocities ω1, ω2 around first and second axes intersecting at an acute angle θ12; a sign determination circuit determining a sign of ω1; a correction circuit correcting the first and second gyro sensor outputs; and a computation circuit computing ω′=√(ω1′2+SA2) and SA=(ω2′−ω1′ cos θ12) / sin θ12 using angular velocities ω1′, ω2′ from the correction circuit, and outputting angular velocity ω by multiplying ω′ by the sign of ω1, wherein the correction circuit includes: first and second offset adjustment circuits outputting ω1″ and ω2″ by respectively subtracting from ω1 and ω2, corrections B1 and B2 corresponding to the first and second gyro sensor outputs when the mobile unit stops; and the angular velocity ω is around an axis coplanar with and between the first and second axes.

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 a method for identifying urban expressway traffic bottlenecks. The method comprises a step of collecting the mobile navigation data of a road vehicle and road fixed detector data, a step of carrying out pretreatment on the collected data, matching the data of different sources, and determining the flow-speed distribution of each detector section, a step of determining a supersaturation critical speed and a supersaturation probability according to the flow-speed distribution, a step of determining supersaturation probability and detector position distribution, and identifying traffic bottlenecks; and classifying the identified urban expressway traffic bottlenecks, and giving corresponding control measures for different types of traffic bottlenecks.

A mobile navigation device operating in a first mode and a second mode is provided. In the first mode, a satellite positioning module is activated while a dead reckoning module is disabled. A processor calculates the coordinates of the mobile navigation device based on the satellite navigation signals received by the satellite positioning module. In the second mode, the satellite positioning module is disabled while the dead reckoning module is activated, and the processor updates the coordinates based on displacements and rotations detected by the dead reckoning module.

An area limiting word storing part which stores area limiting words whose meanings limit an area is disposed in a navigation system, and as the area limiting word storing part is referred to, area limiting words are extracted from among keywords, based on the area limiting words, a condition to narrow down a smaller search area is created. A similar word storing part which stores similar words is further disposed, and as the similar word storing part is referred to, similar words to a keyword are extracted and a search condition to expand the range of a search based on the keyword is created. These search conditions together are destination search conditions, in accordance with which a destination information storing part is searched.

The invention discloses a vehicle navigation method. The method comprises the steps of judging GPS positioning status information in current GPS navigation data to determine whether the current GPS navigation data are usable navigation data or not, achieving navigation according to the current GPS navigation data, or, obtaining inertial navigation data according to history GPS navigation records and vehicle running data and achieving navigation according to the inertial navigation data. Therefore, the problem that due to the influence of covering landforms in the GPS vehicle navigation process, vehicle navigation cannot be achieved is solved. The usability and accuracy of vehicle navigation under various landforms and position environments are improved, the service environment of a vehicle navigation system is expanded, and accordingly the reliability and safety of vehicle navigation when vehicle navigation is in use are improved.

The present invention relates to providing navigation guidance for mobile users, using Global Navigation Satellite Systems (GNSSs) for applications where the user position needs to be determined in real time while meeting the navigation requirements, especially integrity requirement, for the given application. The present invention assists in providing guidance with a high availability of integrity function by trading accuracy for integrity for two different types of navigation applications. A first type of application requires a capability of detecting an occurrence of multiple satellite signal faults; the first embodiment of the invention provides this capability with a high availability of integrity, using two or more independent GNSSs. A second type of application requires a capability of detecting an occurrence of a single satellite signal fault; the second embodiment of the invention provides this capability with a high availability of integrity, using any one or a combination of GNSSs. The detecting and deriving of both methods are (i) in position domain and (ii) determinative of mobile user safety.

The invention discloses an ionospheric delay correction method for LEO satellite augmented navigation systems for GNSS. According to the method, GNSS satellite navigation signals received by LEO GNSS receiver loads are used for providing ionospheric information for navigation augmentation for earth surface users. In the method, as a set of mobile navigation augmentation reference stations, LEO satellites continuously observe the global ionosphere to generate ionospheric delay correction information, and the ionospheric delay correction information is sent to the earth surface users to obtain augmented navigation performance. By adoption of the method, ionospheric delay correction data covering the whole world instead of covering certain areas and particularly ionospheric delay correction data covering the vast marine areas are obtained; ionospheric gradient data are provided; and compared with traditional approaches, ionospheric delay correction accuracy is higher than that of traditional approaches; ionospheric activities and events are monitored in orbit to provide complete ionospheric delay correction information.

The invention discloses an atmospheric environment intelligent management system based on integration of space and air and earth. The atmospheric environment intelligent management system comprises multiple discrete ground air quality automatic monitoring stations, multiple environment monitoring satellites and ground satellite stations, laser radar sensor groups which are networked and arranged according to the pollution transmission characteristics, air quality sensing monitors which are distributed in the key pollution area according to the dense grid and distributed in the sub-key pollution area according to the sparse grid, mobile navigation monitoring vehicles which are organized according to the heavy pollution event and unmanned aerial vehicle monitoring sensors. The monitoring data of the ground air quality automatic monitoring stations, the ground satellite stations, the laser radar sensor groups, the air quality sensing monitors, the mobile navigation monitoring vehicles andthe unmanned aerial vehicle monitoring sensors are summarized to form an overall service system of the pollution layout. The mode of combination of the present ground monitoring network and network monitoring is used so that the disadvantage of the conventional ground monitoring network random distribution can be further improved and the data support can be provided for accurate haze treatment.

The invention relates to a method for automatically switching software interface display styles according to horizontal and vertical screens. The hardware characteristics are combined, and the improvement and expansion are carried out on the basis of a navigation software, so that the navigation software can automatically modify the styles according to the horizontal and vertical screens; signals are digitally coded by an ADC module built in an SOC, and the state determination of horizontal and vertical screens of equipment is carried out; a management module switches a vehicle-mounted style and a mobile phone style of navigation according to the determined state results of the horizontal and vertical screens; the management module adopts a threshold decision-time delay processing mode, and realizes the switching of the interface styles by setting a GUI (Graphical User Interface) loading layout theme data; in navigation application, when the styles are switched, the management module is provided with a navigation service layer, so that the corresponding style can be switched. The method provided by the invention has the advantages that through the placement of the horizontal and vertical screens, the styles of the navigation software is automatically switched, and the functions of a mobile phone software is expanded, so that the mobile phone navigation software simultaneously has the functions which are fully consistent with the vehicle-mounted navigation, and thus the mobile phone navigation software is more simple and humane to operate.

The invention discloses a mobile robot navigation offset correction method comprising the following steps: obtaining a navigation map and mobile programmed routes of the mobile robot work environment;gathering environment information of the mobile robot in a moving process, and obtaining the current pose information of the mobile robot according to the environment information; obtaining navigation offset correction control information according to the mobile programmed route and the current pose information of the mobile robot; correcting the offset of the moving robot in real time accordingto the navigation offset correction control information. In addition, the invention also discloses a mobile robot navigation offset correction device. The method and device can correct the offsets ofthe mobile robot in the moving process, thus enabling the mobile robot to precisely arrive at the destination. The navigation offset correction method and device are simple and practical, low in realization cost, and high in precision.

The invention discloses an indoor mobile robot human-machine integration navigation device and method. The device comprises a pedestrian modeling module, a dynamic cost map, a global path planner, a robot and an indoor vision sensor. The pedestrian modeling module is used for converting the pedestrian perception information into a cost map required by the global path planner search map. The dynamic cost map provides the global path planner with the information of social constraints in the future. The global path planner is the core of the whole system and is responsible for receiving the navigation target pose and the AMCL positioning information, using the "planning-prediction-execution" time series period to carry out dynamic planning and building the search map based on the dynamic cost map to calculate the optimal planning result of the current planning period in each planning period. The robot and the indoor vision sensor are responsible for global environmental perception. In addition, the robot moving chassis receives the underlying motion commands for mobile navigation. The device and the method can be effectively and flexibly applied to the actual indoor environment.