Tiled map display on a wireless device
First Claim
1. A display module in a wireless device, comprising:
- an image tile loader module; and
image tile cache memory adapted to contain a plurality of image tiles, at least one of said plurality of image tiles not being in a viewable section of an overall image when downloaded to said wireless device; and
a predictive selection module to cause said image tile loader module to fetch a next image tile before said next image tile is required for display on said wireless device.
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Accused Products
Abstract
A tiled-map display control with a predictive caching technique that minimizes user wait time and provides at least the illusion of continuous panning, even while map tile images are being loaded. Important components of the tiled map display are its definition and cached use of map tiles, as well as the way that the map tiles are put together on a small screen. Easy, seamless, wait-free and convenient viewing of a map for a user of a wireless device provides information, e.g., mapped traffic conditions. The disclosed embodiments are techniques that have been reduced to practice in both a BREW platform, and then in a J2ME platform, and deployed for operation in major carrier wireless networks. The invention has particular applicability for use in wireless devices with typically smaller display screens requiring the need for panning, and limited bandwidth capabilities of the supporting wireless network.
178 Citations
22 Claims
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1. A display module in a wireless device, comprising:
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an image tile loader module; and
image tile cache memory adapted to contain a plurality of image tiles, at least one of said plurality of image tiles not being in a viewable section of an overall image when downloaded to said wireless device; and
a predictive selection module to cause said image tile loader module to fetch a next image tile before said next image tile is required for display on said wireless device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of fetching a pan-able image for display on a wireless device, comprising:
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definining said pan-able image into a plurality of image tiles;
determining a direction of panning by a user viewing a displayed portion of said pan-able image on said wireless device; and
fetching a next one of said plurality of image tiles based on said determined direction of panning. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. Apparatus for fetching a pan-able image for display on a wireless device, comprising:
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means for definining said pan-able image into a plurality of image tiles;
means for determining a direction of panning by a user viewing a displayed portion of said pan-able image on said wireless device; and
means for fetching a next one of said plurality of image tiles based on said determined direction of panning. - View Dependent Claims (19, 20, 21, 22)
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Specification
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- Resources
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Current AssigneeTeleCommunication Systems Inc (Comtech Telecommunications Corporation)
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Original AssigneeTeleCommunication Systems Inc (Comtech Telecommunications Corporation)
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InventorsBarcklay, Bob, Bansal, Ritesh
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current345/557
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CPC Class CodesG06F 16/50 of still image dataG06F 16/9574 of access to content, e.g. ...G06F 3/0485 Scrolling or panningG09G 2340/145 related to small screensG09G 2360/121 using a cache memoryG09G 2360/122 TilingG09G 2370/02 Networking aspectsG09G 5/005 Adapting incoming signals t...
