Efficient fetching of map tile data

A map tile and map technology, applied in geographic information database, electronic digital data processing, structured data retrieval, etc., can solve the problems of increasing the communication overhead of transmitting map data, only having the

Inactive Publication Date: 2016-02-17
GOOGLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a typical browser can only have a limited number of concurrently pending HPPT requests
Additionally, making a request for each map tile significantly increases the amount of communication overhead for transferring the map data

Method used

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  • Efficient fetching of map tile data
  • Efficient fetching of map tile data
  • Efficient fetching of map tile data

Examples

Experimental program
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Embodiment Construction

[0019] The techniques of the present disclosure allow efficient fetching of map tiles needed to assemble a digital map from a map content server. A single content request to the map content server includes identifying multiple map tiles such that multiple map tiles are fetched without requiring multiple content requests. Map tiles identified in a multi-tile content request typically form a contiguous portion of a digital map. However, any set of map tiles can be retrieved by sending a multi-tile request to the server, where the multi-tile request includes the identification of multiple map tiles. In some cases, each map tile identification may be a complete or unique identification. In other cases, however, a multi-tile request may include a complete or complete identification of one of the map tiles in the multi-tile request, and may include An abbreviated or indexed identification of map tiles, where the indexed tile identification is for example referenced by the tile for...

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Abstract

A method for efficiently fetching map tiles for digital maps includes receiving, at a client device such as a mapping user interface device, a request to display a digital map and identifying a plurality of map tiles for the request, each map tile representing a portion of the digital map. The user interface device generates a single map content request including multiple identifiers corresponding to the plurality of map tiles. The user interface device then sends the map content request to a map content server as a single request requesting multiple map tiles. In response to the map content request, the map content server retrieves the plurality of map tiles from a content database and sends the plurality of map tiles to the client device. The client device can then display the digital map based on the plurality of map tiles.

Description

technical field [0001] The present disclosure relates generally to displaying digital maps on client devices, and more particularly to acquiring and retrieving map content for displaying digital maps. Background technique [0002] The background description provided herein is for the purpose of generally presenting the context of the disclosure. The work of the presently named inventors (to the extent described in the Background section), and aspects of that description that would not otherwise be described as prior art at the time of filing, are neither expressly nor implicitly admitted to be relevant to the present disclosure relative to the prior art. [0003] Digital maps are typically generated by assembling collections of map tiles (eg, images of 256×256 pixels). In raster, vector, or combined image formats, the content of map tiles may include shading, color, roads, navigation routes, labels, markers, building footprints, and the like. Upon receiving a geographic q...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29G06F16/9537G06F16/9574
Inventor 亚廷·查瓦特尼古拉斯·李
Owner GOOGLE LLC
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