Method for document viewing

• US 7,975,221 B2
• Filed: 12/22/2006
• Issued: 07/05/2011
• Est. Priority Date: 01/11/2002
• Status: Active Grant

• Current Assignee: Majandro LLC (IP Edge LLC)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Spiteri, Pamela B., Reid, James W., Rainero, Emil V., Buckley, Robert R.
• Primary Examiner(s): Hong, Stephen S
• Assistant Examiner(s): Faber, David
• Application Number:
  US11/615,343
• Publication Number:
  US 20070106819A1
• Time in Patent Office: 1,656 Days
• Field of Search: 715/200, 715/243, 715/249, 715/250, 715/273, 715/261, 707/101
• US Class Current: 715/249
• CPC Class Codes: G06F 16/957 Browsing optimisation, e.g. caching or content distillation
• CPC Class Codes: G06F 3/1454 involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
• CPC Class Codes: G06T 9/007 Transform coding, e.g. discrete cosine transform
• CPC Class Codes: G09G 2340/02 Handling of images in compressed format, e.g. JPEG, MPEG
• CPC Class Codes: G09G 2340/045 Zooming at least part of an image, i.e. enlarging it or shrinking it
• CPC Class Codes: H04L 67/2895 Intermediate processing functionally located close to the data provider application, e.g. reverse proxies
• CPC Class Codes: H04L 67/565 Conversion or adaptation of application format or content adding application control or application functional data H04L67/561
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing

Abstract

A client-side handheld device requests a server to convert server-side documents into a compression format prior to transmission of said documents to the client. The server retrieves and converts the requested documents to a raster image that is then compressed according to attributes based on information received from the client device in the initial document request. Instead of having to manipulate multiple formats which the original documents are in and supported by the server, the client-side device is preferably optimized in hardware and/or software to support and otherwise take advantage of the requested compression format. The compressed document is then delivered to the client device, in whole or in part, selectively or progressively over time per individual requests prior to displaying the received data to the end-user. Depending on the requested delivery mode, server-side documents are preferably compressed using wavelet compression methods, such as the JPEG 2000 standard, known in the arts. Through such a compression format, documents of sizes (in total bytes) exceeding one or more Megabytes can be compressed down to as small as 30 kilobytes or less.

Claims

1. A method for viewing, on a client-side device having a display, documents requested from a server-side device, the client-side device and server-side device having a communication link therebetween, comprising:

(a) generating a request from the client-side device to be sent to the server-side device, the request identifying a document;

(b) the server-side device retrieving, in response to receiving the request from the client-side device, the requested document;

(c) the server-side device compressing, using a compression format compatible with the client-side device, the retrieved document into a compressed image;

(d) the server-side device communicating a decompressed image to the client side device when a size of the compressed image is greater than a size of an image rendered on the display; and

(e) the client-side device displaying the decompressed image.

2. The method as claimed in claim 1, wherein the compression format corresponds to a multi-resolution compression.

3. The method as claimed in claim 2, wherein the multi-resolution compression is done in accordance with a JPEG2000 standard.

4. The method as claimed in claim 1, wherein the communication link between the client-side device and the server-side device is wireless.

5. The method as claimed in claim 1, wherein said client-side device is a handheld device.

6. The method as claimed in claim 1, further comprising:

(g) the server-side device determining the compression format compatible with the client-side device.

7. A method for viewing, on a client-side device having a display, documents requested from a server-side device, the client-side device and server-side device having a communication link therebetween, comprising:

(a) generating a request from the client-side device to be sent to the server-side device, the request identifying a document, and a section of the document to be sent to the client-side device;

(b) the server-side device rasterizing the requested document;

(c) the server-side device compressing, using a compression format compatible with the client-side device, the rasterized requested document into a compressed image;

(d) the server-side device selecting a section of the compressed image corresponding to the requested section of the requested document;

(e) the server-side device communicating a decompressed image to the client side device when a size of the compressed image is greater than a size of an image rendered on the display; and

(f) the client-side device displaying the decompressed image.

8. The method as claimed in claim 7, wherein the compression format corresponds to a multi-resolution compression.

9. The method as claimed in claim 8, wherein the multi-resolution compression is done in accordance with a JPEG2000 standard.

10. The method as claimed in claim 7, wherein the communication link between the client-side device and the server-side device is wireless.

11. The method as claimed in claim 7, wherein said client-side device is a handheld device.

12. The method as claimed in claim 7, further comprising:

(h) the server-side device determining the compression format compatible with the client-side device.

13. The method as claimed in claim 7, wherein the requested section of the requested document is a page of the requested document.

14. The method as claimed in claim 7, wherein the requested section of the requested document is a number of pages of the requested document, the number of pages being less than all the pages of the requested document.

15. The method as claimed in claim 7, wherein the requested section of the requested document is a portion of a page of the requested document.