Patent ID: 9070114
Filing Date: 2015-06-30
Classification: G06Q,H04L

Abstract:
1. A method for downloading a document attachment to an attachment viewer of a portable electronic device, the method comprising: receiving an email message by the portable device; determining if the email includes a document attachment; in response to determining that the email includes a document attachment, sending a request by the attachment viewer for a first chunk of the document attachment to a server, wherein the request specifies a chunk size; determining that multiple pages of the document attachment can fit in the specified chunk size; receiving the first chunk of the data at the attachment viewer, the first chunk containing multiple pages of the document attachment, including the first page of the document attachment; storing the first chunk in a cache of the portable electronic device; and, in response to the attachment viewer receiving a request to view the document attachment, retrieving the first chunk from the cache, displaying the first chunk, and sending a request for a second chunk of the document attachment to the server by the attachment viewer; and, when the request is not received, the first chunk remains in the cache until the email message is deleted.