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Method for document page delivery to a mobile communication device

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Method for document page delivery to a mobile communication device


A process for viewing a selected portion of a document on a mobile communication device without having to request multiple pages of the document contents containing document global properties applied to the selected part of the document, comprising marking pages of the document within a server, based on size required by the mobile device, associating properties and attributes of the selected portion with the pages, and transmitting the pages with the properties and attributes for display by the mobile device.

Browse recent Research In Motion Limited patents - Waterloo, CA
Inventors: Jianwei Oliver YUAN, Olav A. SYLTHE
USPTO Applicaton #: #20120304049 - Class: 715234 (USPTO) - 11/29/12 - Class 715 


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The Patent Description & Claims data below is from USPTO Patent Application 20120304049, Method for document page delivery to a mobile communication device.

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CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No. 12/724,557, filed Mar. 16, 2010, which is a continuation of U.S. patent application Ser. No. 10/930,677, filed Aug. 31, 2004, now U.S. Pat. No. 7,712,027, the contents of both applications are incorporated herein by reference in their entirety.

FIELD OF THE INVENTION

The following is directed in general to displaying content on mobile communication devices, and more particularly to a method for viewing a selected portion of a document on a mobile communication device without having to request multiple pages of the document contents containing document global properties applied to the selected part of the document.

BACKGROUND OF THE INVENTION

Mobile communication devices are becoming increasingly popular for business and personal use due to a relatively recent increase in number of services and features that the devices and mobile infrastructures support. Handheld mobile communication devices, sometimes referred to as mobile stations, are essentially portable computers having wireless capability, and come in various forms. These include Personal Digital Assistants (PDA), cellular phones and smart phones. While their reduced size is an advantage to portability, bandwidth and processing constraints of such devices present challenges to the downloading and viewing of documents, such as word processing documents, tables and images.

Electronic documents are produced using various computer programs, such as word processors, spreadsheet programs, financial software, and presentation software. In addition to text, such documents contain structural and property information such as paragraph indentation, text color and table size, etc.

When a user of a mobile communication device wishes to view only selected portions of a document stored on a remote server, other portions of the document that contain the structural information and properties used by the selected portion must also typically be transmitted to the mobile communication device. The required downloading of these other portions occurs over a potentially bandwidth-constrained wireless network. For example, if a user wishes to view only a single paragraph in a section at the middle of a 400-page document, the entire section (and sometimes even entire document) that contains default properties for the paragraph must be transmitted to the mobile communication device.

Once downloaded to the device, the electronic document is viewed using a user interface on the mobile communication device, which typically differs from the user interface used to create and view a document on a personal computer. For example, whereas the user interface on a personal computer may include a large, color display and a pointing device such as a mouse, the mobile communication device typically has only a small, possibly non-color, screen, and may not have a mouse. In addition, the mobile communication device typically has greater processing power and memory limitations than a personal computer.

SUMMARY

OF THE INVENTION

According to an aspect of this specification, a method is set forth for viewing a selected portion of a server stored document on a mobile device, comprising building a graph structure within said server representing a map of said document; calculating an output size for each node in said graph structure based on size required by said mobile device and in response marking each page start in said graph structure; searching said graph structure for a parent node representing a page start for said selected portion of said document; associating properties and attributes of said selected portion with said parent node; and transmitting pages of said parent and all child nodes along with said properties and attributes for display by said mobile device.

According to another aspect, a process is set forth viewing a selected portion of a server stored document on a mobile device, comprising: building a graph structure within said server representing a map of said document; marking pages of the document within said server based on size required by said mobile device; associating properties and attributes of said selected portion with ones of said pages containing said selected portion; and transmitting said ones of said pages containing said selected portion with said properties and attributes for display by said mobile device independently of other pages of said document; wherein said associating properties and attributes further comprises searching said graph structure for a node representing a page start for said selected portion of said document; traversing said graph structure and recursively storing each parent of said node representing the page start in a parent container within said server, such that said parent container contains all nodes and leaves belonging to said page start and each parent of said node; and generating an output for each said page start containing contents and attributes of all said nodes and leaves belonging to said page start and attributes of each parent of said node representing the page start, for transmission to said mobile device

By using this approach for page delivery from the server, the client on the mobile device is able to retrieve any portion (page) of a document and display it independently, since all of its properties and attributes are already associated. This eliminates the order dependence for displaying a document such as required by a desktop application. More importantly, overall network bandwidth usage is limited.

Additional aspects and advantages will be apparent to a person of ordinary skill in the art, residing in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

A detailed description of the preferred embodiment is set forth in detail below, with reference to the following drawings, in which:

FIG. 1 is a block diagram of a network environment in which the preferred embodiment may be practiced;

FIG. 2 is a tree diagram showing the basic structure of a Document Object Model (DOM) used in the preferred embodiment of the invention;

FIG. 3 shows the top-level of the DOM structure in FIG. 2;

FIG. 4 shows an exemplary DOM structure for a word processing document;

FIG. 5 shows an exemplary DOM structure for a table document;

FIG. 6 shows an exemplary DOM structure for a word processing document containing an image subdocument;

FIG. 7 is a flowchart showing document DOM structure construction and pagination according to the preferred embodiment; and



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Previous Patent Application:
Method and apparatus for extensibility of user interface binding definitions
Next Patent Application:
Multimedia aggregation in an online social network
Industry Class:
Data processing: presentation processing of document
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stats Patent Info
Application #
US 20120304049 A1
Publish Date
11/29/2012
Document #
13570991
File Date
08/09/2012
USPTO Class
715234
Other USPTO Classes
International Class
/
Drawings
8



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