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System and method for pre-loading flyer image tiles and managing memory for same

  • US 9,092,806 B2
  • Filed: 11/18/2011
  • Issued: 07/28/2015
  • Est. Priority Date: 01/21/2011
  • Status: Active Grant
First Claim
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1. A method executed on a processor of a communication device for displaying a digital flyer comprising a plurality of flyer image tile sets each associated with a different base resolution, the method comprising:

  • retrieving at least one flyer image tile associated with a zoomed-out level from a selected flyer image set, the selected flyer image set selected from the plurality of flyer image tile sets of the digital flyer, each of the plurality of flyer image tile sets associated with a different base resolution, the selection of the flyer image tile set based on a size of an underlay viewport;

    pre-loading the underlay viewport with a base flyer image comprising the at least one retrieved image flyer tile from the selected flyer image tile set;

    displaying in a current viewport, at least a portion of the base flyer image that is visible in the current viewport, the displayed portion of the base flyer image displayed at a current zoom level of the current viewport that differs from the zoomed-out level;

    retrieving at least one zoomed-in flyer image tile for the current zoom level different from the zoomed-out level, the at least one zoomed-in flyer image tile retrieved from the selected flyer image tile set; and

    once the at least one zoomed-in flyer image tile is retrieved, overlaying onto the displayed portion of the base flyer image at least a portion of the zoomed-in flyer image tile.

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