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:
Apr. 29, 2014
Filed:
Nov. 16, 2011
Thomas Gregory Nourse, Half Moon Bay, CA (US);
Michael Siliski, San Francisco, CA (US);
Hans-olav Cavelie, San Francisco, CA (US);
Ronghui Zhu, Sunnyvale, CA (US);
Thomas Gregory Nourse, Half Moon Bay, CA (US);
Michael Siliski, San Francisco, CA (US);
Hans-Olav CaveLie, San Francisco, CA (US);
Ronghui Zhu, Sunnyvale, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
A pre-fetching map data system and method identifies a subset of map data to corresponding to one or more points of interest to be displayed on the map. The map data is stored on a remote map database and in the form of map data tiles. The system identifies those map data tiles that correspond to the subset of map data corresponding to the one or more points of interest, where the identified pre-fetch map data tiles are sent from the remote database to a client device for cache storage. The pre-fetch map data tiles are identified using a variable map tile radius, which when extended from the points of interest defines the map tiles that qualify as pre-fetch map data tiles. The tile radius can be fixed or dynamically adjusted and changes across different map zoom levels.