Data processing: vehicles – navigation – and relative location – Navigation – Employing position determining equipment
Reexamination Certificate
2007-03-27
2007-03-27
Camby, Richard M. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Navigation
Employing position determining equipment
C701S207000, C701S209000, C340S995120, C340S995140, C340S995150
Reexamination Certificate
active
11039616
ABSTRACT:
The present invention relates to a method for converting coordinate values of map data, wherein three-dimensional effects are displayed on a screen by converting two-dimensional coordinate values of objects constituting a map without using a three-dimensional graphic library and an additional storage space.In the method of the present invention, two-dimensional map data for a certain area including a reference position are loaded from a map data storage unit and then moved with respect to the reference position and a sight line along which the two-dimensional map data are viewed from the reference position; an XY coordinate system with an origin of a central position of the moved two-dimensional map data is defined and coordinate values of objects constituting the two-dimensional map data are converted into coordinate values in the XY coordinate system; and Y-axis coordinate values obtained through the XY coordinate conversion of the two-dimensional map data are converted on a reduced scale at a reduction ratio predetermined according to the Y-axis coordinate values, and X-axis coordinate values of the objects in a digital map with the reduced Y-axis coordinate values are converted on an enlarged or reduced scale according to a predetermined X-axis coordinate value conversion function, thereby displaying the map on the screen while representing three-dimensional effects.
REFERENCES:
patent: 5948043 (1999-09-01), Mathis
patent: 6445999 (2002-09-01), Nakamura
patent: 6895329 (2005-05-01), Wolfson
patent: 6968271 (2005-11-01), Wolfson
patent: 7016781 (2006-03-01), Wolfson
patent: 7027916 (2006-04-01), Furukawa
Camby Richard M.
Lee Hong Degerman Kang & Schmadeka
LG Electronics Inc.
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