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Natesan Senthil, Crane Aaron, Robare Philip: Navigation system with distributed computing architecture. Navigation Technol, March 28, 2003: JP2003-090735

PROBLEM TO BE SOLVED: To provide geographic data to end users' computing platforms.SOLUTION: A server maintains downloadable geographic data that are organized into pre-computed parcels that correspond to pre-determined sub-areas into which the entire geographic region serviced by the server is divi ...


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Crane Aaron I, Roberts Joseph R, Kozak Frank J: Method and system for collecting data to use position of portable telephone set matched with road network. Navigation Technol, May 11, 2001: JP2001-126179

PROBLEM TO BE SOLVED: To collect geographical data by means of an existing infrastructure that covers all roads by finding the positions of portable telephone sets, etc. SOLUTION: The positions of plural portable telephone sets are found in a certain geographical area by means of a portable telephon ...