发明名称 |
VERFAHREN UND VORRICHTUNG ZUR DYNAMISCHEN KENNZEICHNUNG VON KARTENOBJEKTEN IN VISUELL ANGEZEIGTEN KARTEN MOBILER KOMMUNIKATIONSVORRICHTUNGEN |
摘要 |
<p>A method of displaying a map on a wireless communications device includes steps of obtaining map data for rendering the map to be displayed on the wireless communications device, generating corrected map data by applying a spherical correction factor to the obtained map data, and rendering the corrected map data to display the map on a display of the wireless communications device. The spherical correction factor corrects for map distortions that occur at northerly (or southerly) latitudes. Since the spherical correction factor is a simple correction to a 3X3 transformation matrix, this spherical correction can be easily applied without taxing the CPU limitations of small handheld devices.</p> |
申请公布号 |
AT447160(T) |
申请公布日期 |
2009.11.15 |
申请号 |
AT20060116848T |
申请日期 |
2006.07.07 |
申请人 |
RESEARCH IN MOTION LIMITED |
发明人 |
KLASSEN, GERHARD DIETRICH;JOHNSON, ERIC;MAJOR, HARRY RICHMOND;BOUDREAU, JESSE JOSEPH;DEVENYI, PETER JOHN |
分类号 |
G01C21/32;G09B29/10 |
主分类号 |
G01C21/32 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|