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Map tile data prefetching based on event analysis generated by mobile devices

A technology for map tiles and mobile devices, which is used in location-based services, electrical digital data processing, special data processing applications, etc.

Active Publication Date: 2017-03-15
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although raster images are relatively easy to render on client devices, raster image data often requires a large amount of storage space for a comprehensive map
It is also difficult to efficiently manipulate raster images on the client device
For example, to zoom in on a selected region, to retrieve new raster image data from the server, or to zoom in on available raster image data with significant loss of quality

Method used

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  • Map tile data prefetching based on event analysis generated by mobile devices
  • Map tile data prefetching based on event analysis generated by mobile devices
  • Map tile data prefetching based on event analysis generated by mobile devices

Examples

Experimental program
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Embodiment Construction

[0014] Generally speaking, a drawing module executed on a mobile device prefetches digital map tile data for the drawing module. The size of the geographic area represented by an individual map tile can depend on the zoom level that the user uses to view the map and the map tile is associated with it, so that a single map tile at a lower zoom level is better than a single map tile at a higher zoom level. A larger geographic area of ​​map tiles. The mapping system can generate each map tile with descriptors according to the vector graphics format. The client device (e.g., mobile phone, tablet computer, etc.) can locally generate a raster image for each tile based on the vector descriptor corresponding to each map tile. In one embodiment, the drawing system ( figure 1 ) Retrieve the requested data from the database. Once obtained from the remote drawing system, the map tile data can then be stored in the mobile device for possible display to the user based on user action analys...

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Abstract

Map tile data for displaying primitives of the web-based mapping system in the mobile device may be prefetched to the device based on an analysis of historical usage of the mapping module of the smartphone or other mobile computing device. For example, a user drawing activity module executing on a mobile device may retrieve user drawing activity data. The user mapping activity module then extracts geographic location data from the user mapping activity data and sends the geographic location data to the mapping system via the network connection. The mapping system can then match the map tile data with the geographic location data extracted from the user mapping activity data and send the matched mapping system data to the mobile computing device for cache storage at the mobile computing device. The user drawing activity module may also analyze user drawing activity data to determine whether the extracted geolocation data is relevant enough to warrant prefetching tile data.

Description

Technical field [0001] The present disclosure mainly relates to prefetching digital map data, and more specifically to a method for prefetching digital map data for viewing on the mobile device based on the analysis of data generated by a drawing application executed on the mobile device System and method. Background technique [0002] The background description provided here is to generally present the background of the disclosure. To the extent that the work of the inventor of the current title describes the work in this background art section, and the aspects of the description that may not be otherwise defined as prior art at the time of submission are neither expressly nor implicitly admitted as relative to Prior art of the present disclosure. [0003] Many mobile computing devices, such as cellular phones, tablet computers, notebooks, etc., incorporate global positioning system (GPS) hardware and applications. GPS hardware and applications are useful for navigation with mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/00G06F17/30H04W4/02
CPCG06F16/9574G01C21/20G01S19/14G01C21/3881
Inventor T·G·诺尔塞H-O·凯夫莱
Owner GOOGLE LLC