Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2007-12-04
2007-12-04
Mahmoudi, Tony (Department: 2165)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000, C715S748000
Reexamination Certificate
active
10334240
ABSTRACT:
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.
REFERENCES:
patent: 6433790 (2002-08-01), Taylor et al.
patent: 6747649 (2004-06-01), Sanz-Pastor et al.
patent: 2002/0118224 (2002-08-01), Levanon et al.
patent: 2003/0204513 (2003-10-01), Bumbulis
patent: 2004/0160441 (2004-08-01), Lokovic et al.
Chen Tuolin
Lee Aaron
Schmidt Hauke
Kenyon & Kenyon LLP
Mahmoudi Tony
Robert & Bosch GmbH
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