Method for Viewing Non-Image Attachments on a Portable Electronic Device

• US 20100064019A1
• Filed: 11/18/2009
• Published: 03/11/2010
• Est. Priority Date: 03/31/2006
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Blackberry Limited
• Inventors: Bocking, Andrew, Stalin, Eshwar, Dumitru, Dan, Sylthe, Olav A.
• Granted Patent: US 8,117,269 B2
• Time in Patent Office: Days
• US Class Current: 709/206
• CPC Class Codes: G06F 15/16 Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs coordinating program control therefor G06F9/52; in regulating and control system G05B
• CPC Class Codes: G06Q 10/107 Computer-aided management of electronic mailing [e-mailing]
• CPC Class Codes: G06T 15/005 General purpose rendering architectures
• CPC Class Codes: G06T 2200/16 involving adaptation to the client's capabilities

Abstract

A method for viewing an attachment of an email message on a portable electronic device in which the attachment has a renderable format is provided. The method includes: requesting to view the attachment in an attachment viewer of the portable electronic device, building a graph structure within an attachment server representing a map of the attachment, the graph structure including at least one renderable identifier corresponding to a page of the attachment, requesting rendering of the attachment, the rendering request being send from the attachment viewer to the attachment server and including the at least one renderable identifier, initializing a rendering library and storing rendering commands -corresponding to command types of the graph structure in the rendering library, drawing the rendering commands in an off-screen bitmap, saving the off-screen bitmap as a JPEG file, sending the JPEG file to the portable electronic device and displaying the JPEG file in the attachment viewer.

Claims

1. A method for viewing an attachment of an email message on a portable electronic device comprising:

requesting to view said attachment in an attachment viewer of said portable electronic device, said attachment having a renderable format;

building a graph structure within an attachment server representing a map of said attachment, said graph structure including at least one renderable identifier corresponding to a page of said attachment;

requesting rendering of said attachment, said rendering request being sent from said attachment viewer to said attachment server and including said at least one renderable identifier;

drawing rendering commands corresponding to command types of said graph structure in an off-screen bitmap;

saving said off-screen bitmap as an image;

sending said image to said portable electronic device; and

displaying said image in said attachment viewer.

2. A method as claimed in claim 1, further comprising encapsulating said image in Universal Content Stream (UCS) data prior to sending said image to said portable electronic device.

3. A method as claimed in claim 2, further comprising saving said UCS data in a content store of said portable electronic device.

4. A method as claimed in claim 1, wherein said graph structure is a Document Object Model (DOM).

5. A server process comprising:

receiving a request to view an attachment of an email message, said attachment having a renderable format;

building a graph structure within an attachment server representing a map of said attachment, said graph structure including at least one renderable identifier corresponding to a page of said attachment;

receiving a request to render said attachment, said request to render including said at least one renderable identifier;

drawing rendering commands corresponding to command types of said graph structure in said rendering library in an off-screen bitmap;

saving said off-screen bitmap as an image; and

transmitting said image.

6. A server method as claimed in claim 5, further comprising encapsulating said JPEG file in Universal Content Stream (UCS) data prior to transmitting said image.

7. A server method as claimed in claim 5, wherein said graph structure is a Document Object Model (DOM).

8. A mobile device method comprising:

transmitting a request to view an attachment, said attachment having a renderable format;

receiving a server descriptor including at least one renderable identifier corresponding to a page of said attachment;

transmitting a request to render said attachment, said request to render including said at least one renderable identifier;

receiving and displaying an image of a first page of said attachment and a graphical indication of any additional pages of said attachment; and

in the event of scrolling over said graphical indication transmitting an additional request to render an associated one of said additional pages for receipt and display.

9. The mobile device method as claimed in claim 8, wherein said graphical indication is a question mark.

10. The mobile device method as claimed in claim 9, wherein said additional request is transmitted after a predetermined delay following said scrolling.

11. The mobile device method as claimed in claim 10, wherein said predetermine delay is approximately two seconds.

12. The mobile device method as claimed in claim 8, further comprising saving said image in a content store.

13. A mobile device method comprising:

transmitting a request to view an attachment having at least one page, said attachment having a renderable format including both text and at least one renderable image containing said text for said at least one page;

receiving said text and rendered image containing said text for said at least one page; and

selectably displaying one of either said text, or a thumbnail version of said image or both

said text and said thumbnail version of said image.

14. The mobile device method of claim 13, further comprising receiving an input and in response toggling between said one of either said text, or a thumbnail version of said image or both said text and said thumbnail version of said image and another of either said text, or a thumbnail version of said image or both said text and said thumbnail version of said image.

15. The mobile device method of claim 13, further comprising successively receiving and displaying additional rendered images of subsequent pages of said attachment as a slide show.