Deferred synchronization of distributed objects

• US 5,408,470 A
• Filed: 10/14/1993
• Issued: 04/18/1995
• Est. Priority Date: 10/14/1993
• Status: Expired

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Rothrock, Lewis V., Thessin, Tyler R.
• Primary Examiner(s): Olms, Douglas W.
• Assistant Examiner(s): HOM, SHICK C
• Application Number:
  US08/137,320
• Time in Patent Office: 551 Days
• Field of Search: 370/58.1, 370/58.2, 370/60, 370/62, 370/77, 370/85.13, 370/94.1, 370/112, 379/96, 379/202, 379/204, 379/207
• US Class Current: 370/261
• CPC Class Codes: G06Q 10/10 Office automation; Time management
• CPC Class Codes: H04L 12/1813 for computer conferences, e.g. chat rooms instant messaging H04L51/04; protocols for multimedia communication H04L65/1101; arrangements for multi-party communication H04L65/403; telephonic conference arrangements H04M3/56; television conference systems H04N7/15
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A method and apparatus is disclosed for communication between agents in an electronic conferencing system. In an electronic conferencing system wherein data is shared between a plurality of participants during an electronic conference, a method is disclosed for maintaining consistency of the data among the participants during the electronic conference. The method of the present invention comprises the following steps: a) each participant in the electronic conferencing system maintains a local copy of the shared data for the electronic conference during the electronic conference; b) one of the participants commences to perform modifications to an associated local copy of the shared data; c) subsequent to the step of commencing modifications, a participant requests an index for the modifications from an arbitrator participant, wherein the modifications to the associated local copy of the shared data may continue to be performed; d) the arbitrator participant responds to the participant requesting the index for the modifications; and e) a participant modifies the associated local copy of the shared data according to the index received from the arbitrator participant and transfers the local modifications to remote participants.

Claims

1. In an electronic conferencing system wherein data is shared between a plurality of participants during an electronic conference, a method of maintaining consistency of shared data among said participants during said electronic conference comprising the following steps:

a. each participant of said plurality of participants in said electronic conferencing system maintaining a local copy of said shared data for said electronic conference during said electronic conference;

b. one participant of said participants commencing to perform modifications to an associated local copy of said shared data;

c. subsequent to commencing modifications, said one participant requesting an index for said modifications from an arbitrator participant, wherein said modifications to said associated local copy of said shared data may continue to be performed;

d. said arbitrator participant responding to said one participant with said index for said modifications to said associated local copy of said shared data;

e. said one participant of said participants modifying said associated local copy of said shared data according to said index received from said arbitrator participant; and

transferring said modifications of steps b through e above to a remote participant.

2. The method as claimed in claim 1 wherein said shared data further includes an object.

3. The method as claimed in claim 2 further including a step of determining whether ownership of said object has been obtained.

4. The method as claimed in claim 2 further including a step of determining whether said object is blocked.

5. The method as claimed in claim 2 further including a step of deleting said object.

6. In an electronic conferencing system wherein data is shared between a plurality of participants during an electronic conference, an apparatus for maintaining consistency of shared data among said participants during said electronic conference comprising:

a. means for maintaining a local copy of said shared data for said electronic conference during said electronic conference, each participant of said plurality of participants in said electronic conferencing system including said means for maintaining;

b. means for commencing to perform modifications to an associated local copy of said shared data;

c. means for requesting an index for said modifications from an arbitrator participant, wherein said modifications to said associated local copy of said shared data may continue to be performed, one participant of said participants including said means for requesting;

d. means for responding to said one participant with said index for said modifications to said associated local copy of said shared data, said arbitrator participant including said means for responding;

e. means for modifying said associated local copy of said shared data according to said index received from said arbitrator participant; and

f. transferring said modifications of steps b through e to a remote participant.

7. The apparatus as claimed in claim 6 wherein said shared data further includes an object.

8. The apparatus as claimed in claim 7 further including a means for determining whether ownership of said object has been obtained.

9. The apparatus as claimed in claim 7 further including a means for determining whether said object is blocked.

10. The apparatus as claimed in claim 7 further including a means for deleting said object.