Optimal page sharing in a collaborative environment

• US 8,230,017 B2
• Filed: 03/23/2005
• Issued: 07/24/2012
• Est. Priority Date: 03/23/2005
• Status: Active Grant

• Current Assignee: Dropbox, Inc.
• Original Assignee: International Business Machines Corporation
• Inventors: Henderson, Roderick C., Hind, John R., Li, Yongcheng
• Primary Examiner(s): Etienne, Ario
• Assistant Examiner(s): Lai, Michael C
• Application Number:
  US11/087,890
• Publication Number:
  US 20060218498A1
• Time in Patent Office: 2,680 Days
• Field of Search: 709204-205, 382/232, 382/242, 382/243
• US Class Current: 709/205
• CPC Class Codes: H04L 67/131 Protocols for games, networked simulations or virtual reality
• CPC Class Codes: H04L 69/04 Protocols for data compression, e.g. ROHC

Abstract

A method, system and apparatus for a collaborative system, method and apparatus configured for optimal page sharing. The system of the invention can include a collaborative application disposed in a collaborative peer and configured for communicative coupling to other collaborative peers. The system can further include a compressor/decompressor disposed in the collaborative peer. The compressor/decompressor can include logic programmed to pre-process a shared page for the collaborative application by compressing the shared page before transmitting the shared page to the other collaborative peers.

Claims

1. A collaborative computer hardware system configured for optimal page sharing, the system comprising:

a collaborative peer hardware device configured to;

determine a presentation sequence of application pages of a collaborative application by an off-line pass through of content of the collaborative application;

select an application page based on the determined presentation sequence;

prior to transmitting said selected application page to collaborative peers, compress said selected application page by

partitioning said selected application page into a set of regions;

for each region, selecting a particular compression technique from among multiple compression techniques based upon content disposed in said each region; and

,

compressing said each region using said particular compression technique;

repeat the compression steps performed for the selected application page for all other application pages; and

delta encode page to page transitions based on the determined presentation sequence.

2. The collaborative computer hardware system of claim 1, wherein

said multiple compression techniques comprise delta compression, fractal compression and substitutional compression.

3. The collaborative computer hardware system of claim 1, wherein

said collaborative application comprises a whiteboard application.

4. The collaborative computer hardware system of claim 1, wherein

said collaborative application comprises a shared application.

5. A method for optimal image sharing in a collaborative environment, the method comprising the steps of:

determining a presentation sequence of application pages of a collaborative application by an off-line pass through of content of the collaborative application;

selecting an application page based on the determined presentation sequence;

prior to transmitting said selected application page to collaborative peers, compressing said selected application page, wherein said compressing step comprises the steps of;

partitioning said selected application page into a set of regions;

for each region, selecting a particular compression technique from among multiple compression techniques based upon content disposed in said each region; and

,

compressing said each region using said particular compression technique;

repeating the compression steps performed for the selected application page for all other application pages; and

delta encoding page to page transitions based on the determined presentation sequence.

6. A machine readable storage having stored thereon a computer program for optimal page sharing in a collaborative environment, the computer program comprising a routine set of instructions which when executed by a machine causes the machine to perform the steps of:

determining a presentation sequence of application pages of a collaborative application by an off-line pass through of content of the collaborative application;

selecting an application page based on the determined presentation sequence;

prior to transmitting said selected application page to collaborative peers, compressing said selected application page, wherein said compressing step comprises the steps of;

partitioning said selected application page into a set of regions;

for each region, selecting a particular compression technique from among multiple compression techniques based upon content disposed in said each region; and

,

compressing said each region using said particular compression technique;

repeat the compression steps performed for the selected application page for all other application pages; and

delta encoding page to page transitions based on the determined presentation sequence.