System and method for rapid document conversion

• US 8,122,344 B2
• Filed: 02/28/2001
• Issued: 02/21/2012
• Est. Priority Date: 03/01/2000
• Status: Expired due to Fees

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Research In Motion Limited (Blackberry Limited)
• Inventors: Halahmi, Erez
• Primary Examiner(s): RIES, LAURIE ANNE
• Application Number:
  US10/204,757
• Publication Number:
  US 20030023637A1
• Time in Patent Office: 4,010 Days
• Field of Search: 715/513, 715/517, 715/526, 715/249, 715/273
• US Class Current: 715/249
• CPC Class Codes: G07F 15/00 Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity

Abstract

A method and a system for converting a document in a streamed manner, for more rapid transmission and display of each part of the document as that part is converted. The system and method are preferred for operation in environments with limited bandwidth and/or display capacity, such as for wireless handheld devices, for example. Such devices cannot easily receive large amounts of data, and also typically have relatively small display screens. Thus, the user is able to quickly receive and display each part of the document after being converted, rather than waiting for the entire document to be converted and then transmitted before any part is displayed. The system and method are particularly useful for modular file formats, such as word processing document file formats, in which each module of a file can only be fully interpreted with regard to at least one other module.

Claims

1. A method of converting a modular document into a converted file format by a conversion server for display on a wireless communication device, the modular document comprising a plurality of modules, wherein a portion of the plurality of modules contain text and a portion of the plurality of modules contain format, and wherein at least one format module is inter-related with at least one text module, the method comprising:

receiving at the conversion server a part of a modular document requested for display on the wireless communication device, but less than a whole of a modular document;

analyzing the received part of the modular document to locate a set of modules for conversion, the set of modules comprising at least one text module and a format module inter-related with said text module;

upon locating the set of modules, retrieving text from the at least one text module;

determining changes to the retrieved text according to the format module;

applying the determined changes to the retrieved text and converting said retrieved text into converted file format comprising a linear sequence, wherein said determined changes are employed during conversion of said retrieved text as a result of an exchange of information between the inter-related modules during conversion; and

transmitting said converted file format over a network to said wireless communication device, whereby the changed text may be displayed on the wireless communication device without waiting for other parts of the modular document to be converted.

2. The method of claim 1, wherein applying the determined changes to the retrieved text further comprises:

(i) storing said text module at the conversion server before converting the retrieved text of said text module and

(ii) analyzing at least one format in said format module.

3. The method of claim 1, wherein the modular document is a word processing document.

4. The method of claim 1, wherein said network is a wireless network.

5. The method of claim 4, wherein said wireless communication device is a cellular telephone, and said wireless network is a cellular telephone network.

6. The method of claim 1, wherein said converted file format is a mark-up language format.

7. The method of claim 6, wherein said mark-up language is WML (Wireless Mark-up Language), such that said wireless communication device is a WAP (wireless application protocol) enabled device.

8. The method of claim 1, wherein said wireless communication device is a low bandwidth communication device.

9. The method of claim 1, wherein said converting said retrieved text comprises converting to a first generic file format, and then converting said first generic file format to a specific file format.

10. The method of claim 9, wherein said specific file format is determined according to at least one preference of the user.

11. The method of claim 9, further comprising determining said specific file format according to at least one characteristic of said wireless communication device.

12. A conversion server for converting a modular document to a converted file format for display to a user at a remote wireless communication device, the modular document requiring information from multiple modules arranged in a non-linear sequence in order to display the document correctly, the conversion server comprising:

logic structure for receiving a part, but less than a whole, of the modular document, said modular document requested for display at the wireless communication device;

logic structure for analyzing the received part of the modular document to locate a text module and a format module inter-related with said text module and required for correctly displaying text of said text module of said document part;

logic structure for retrieving text from the text module;

logic structure for determining a change directed by a format of the format module on the retrieved text of the text module of said document part;

logic structure for applying the determined change and converting said retrieved text into a converted file format comprising a linear sequence, wherein said determined change is employed during conversion of said retrieved text as a result of an exchange of information between the inter-related modules during the conversion; and

logic structure for transmitting said converted file format over a network to the wireless communication device, whereby the changed text may be displayed on the wireless communication device without waiting for other parts of the modular document to be converted correctly;

wherein the logic structure is stored on a non-transitory tangible computer readable medium.

13. The server of claim 12 wherein the conversion server further comprises logic structure for storing said text module of said received part of the modular document.

14. The server of claim 12 wherein the conversion server further comprises logic structure for converting said retrieved text to a first generic file format, and then convert said first generic file format to a specific file format.