Patent ID: 8793387
Filing Date: 2014-07-29
Classification: H04L

Abstract:
1. A method for downloading an attachment to an attachment viewer of a portable electronic device, comprising: sending an initial request from said attachment viewer to a server in response to receipt of an email message identifying said attachment by said portable electronic device; accessing a Document Object Model graph structure representing a map of said attachment from said server, said Document Object Model graph structure having been previously built on said server; reconstructing said Document Object Model graph structure in response to said initial request and encapsulating said Document Object Model graph structure in data having an attachment viewer readable format, said data being stored on said server; downloading an initial chunk of said data from said server to said attachment viewer responsive to said initial request; storing said downloaded initial chunk of said data on said portable electronic device prior to display thereof; displaying said stored initial chunk of said data on said portable electronic device; upon displaying said stored initial chunk of said data, detecting scrolling towards an end of the initial chunk of said data and automatically sending a request to download a respective next chunk of said data from said server; responsive to said request, downloading said respective next chunk of said data from said server; and while data chunks of said data remain to be downloaded from said server, repeating said storing, displaying, requesting and downloading for subsequent chunks of said data.