The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2015
Filed:
Dec. 15, 2008
Applicant:
Michael J. Crowley, Haslet, TX (US);
Inventor:
Michael J. Crowley, Haslet, TX (US);
Assignee:
BlackBerry Limited, Waterloo, Ontario, CA;
Primary Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01); G01C 21/32 (2006.01); G01C 21/34 (2006.01);
U.S. Cl.
CPC ...
G01C 21/32 (2013.01); G01C 21/3484 (2013.01);
Abstract
A method of downloading map data to a portable electronic device entails determining a route, identifying waypoints along the route, and downloading and caching map data for the waypoints along the route. The map data for areas around each of the waypoints (intersections, decision points) are thus preloaded prior to the device arriving at or near each waypoint. This ensures that the device has locally cached all the map data needed to render a navigationally useful map of the area around each waypoint.