Distributed document sharing

• US 7,461,347 B2
• Filed: 01/28/2005
• Issued: 12/02/2008
• Est. Priority Date: 12/29/2000
• Status: Expired due to Term

• Current Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Original Assignee: Cisco Technology, Inc. (Cisco Systems, Inc.)
• Inventors: Zhang, Xuan, Zhu, Min
• Primary Examiner(s): NGUYEN, CAO H
• Application Number:
  US11/045,749
• Publication Number:
  US 20050216847A1
• Time in Patent Office: 1,404 Days
• Field of Search: 715/753, 715/751, 715/733, 715764-765, 715/513, 715/760
• US Class Current: 715/751
• CPC Class Codes: H04L 67/10 in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/14 Session management for real-time applications in data packet communications networks H04L65/1066
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]

Abstract

A distributed collaborative computer system that supports document sharing is provided that comprises a plurality of server computers interconnected via a high-speed link. Client computers can connect to any available server computer and start or join a conference hosted on either the server computer to which the client computer is connected or any other server in the system. As a result, the system and method of the present invention allow document sharing among an arbitrary number of client computers.

Claims

1. A computer system for distributed collaborative computing, the system comprising:

a plurality of server computers connected to a plurality of client computers via a global-area computer network;

a high-speed direct connection link connecting the plurality of server computers; and

a computer program executable by the server computers, wherein the computer a program comprises computer instructions for;

spawning a plurality of logical collaboration servers distributed across the plurality of server computers;

receiving a request to join an on-line conference from a particular client computer of the plurality of client computers;

selecting a particular logical collaboration server on a particular one of the plurality of server computers, from the plurality of logical collaboration servers, to support the client computer;

replicating conference information to the particular logical collaboration server from another logical collaboration server;

conducting an on-line conference among the particular client computer and an arbitrary number of other client computers connected to an arbitrary number of other logical collaboration servers on the server computers connected to each other by over the global area network and the high-speed direct connection link;

displaying a document stored on the particular client computer on an arbitrary number of other client computers;

monitoring the operational status of the logical collaboration server; and

spawning a new logical collaboration server process in the event failure of a spawned logical collaboration server is detected.

2. The computer system of claim 1, wherein the computer program further comprises computer instructions for:

sharing an application program executed on one of the client computers with an arbitrary number of other client computers.

3. The computer system of claim 1, wherein the computer program further comprises computer instructions for:

detecting a failure of one of the server computers handling the on-line conference;

disconnecting the failed server computer from the on-line conference;

connecting another of the server computers to the conference; and

resuming the on-line conference.

4. The computer system of claim 1, further comprising a database, wherein the computer program further comprises computer instructions for:

storing information about the status of the on-line conference in the data-base.

5. The computer system of claim 1, wherein the computer program further comprises computer instructions for:

ensuring that a maximum number of authorized conference participants is not exceeded.

6. A method of operating a distributed collaborative computing system comprising a plurality of server computers, the method comprising:

spawning a plurality of logical collaboration servers and distributing them across the plurality of server computers;

replicating conference information from one logical collaboration server to another logical collaboration server;

conducting an on-line conference among an arbitrary number of the client computers connected to an arbitrary number of logical collaboration servers on the server computers, the server computers connected to each other by a high-speed direct connection link;

displaying a document stored on one of the client computers on an arbitrary number of other client computers;

monitoring the operational status of the logical collaboration servers; and

spawning a new logical collaboration server process in the event failure of a spawned logical collaboration server process is detected.

7. The method of claim 6, further comprising:

detecting a failure of one of the server computers handling the on-line conference

disconnecting the failed server computer from the on-line conference;

connecting another of the server computers to the conference; and

resuming the online conference.

8. The method of claim 6, wherein the distributed collaborative computing system further comprises a database and the method further comprises:

storing information about the status of the on-line conference in the database.

9. The method of claim 6, further comprising:

ensuring that a maximum number of authorized conference participants is not exceeded.

10. A computer-readable storage medium storing a computer program executable by a plurality of server computers, the computer program comprising computer instructions for:

spawning a plurality of logical collaboration servers and distributing them across the plurality of server computers replicating conference information from one logical collaboration server to another logical collaboration server;

conducting an on-line conference among an arbitrary number of the client computers connected to an arbitrary number logical collaboration servers on the server computers, the server computers connected to each other by a high-speed direct connection link;

displaying a document stored on one of the client computers on an arbitrary number of other client computers;

monitoring the operational status of the logical collaboration servers spawned processes; and

spawning a new logical collaboration server process in the event failure of a spawned logical collaboration server process is detected.

11. The computer-readable storage medium of claim 10, wherein the computer program further comprises computer instructions for:

detecting a failure of one of the server computers handling the on-line conference;

disconnecting the failed server computer from the on-line conference;

connecting another of the server computers to the conference; and

resuming the on-line conference.

12. The computer-readable storage medium of claim 10, further comprising a database, wherein the computer program further comprises computer instructions for:

storing information about the status of the on-line conference in the database.

13. The computer-readable storage medium of claim 10, wherein the computer program further comprises computer instructions for:

ensuring that a maximum number of authorized conference participants is not exceeded.