Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2008-07-01
2008-07-01
Vo, Tim (Department: 2168)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000, C707S793000
Reexamination Certificate
active
10867953
ABSTRACT:
A method and apparatus for calculating the surface distance between two geographical locations are described. According to one aspect of the present invention, values are stored in a square look-up table for determining the square of a value. Also, values are stored in a linear to surface distance look-up table for determining the surface distance of a linear value. Cartesian co-ordinates of the two geographic locations and the square look-up table are then used to calculate the square of the linear distance between the two geographical locations and the linear to surface distance look-up table is used to convert the calculated square of the linear distance to a surface distance.
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Gupta Raghav
Henderson Richard D.
eBay Inc.
Sanders Aaron
Schwegman Lundberg & Woessner
Vo Tim
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