Patent ID: 8458283
Filing Date: 2013-06-04
Classification: H04L,H04M,H04N

Abstract:
1. A method for communicating modification data for a shared file stored on a network during a video conference wherein a plurality of users modify the shared file, the method comprising: a first video conference participant communicating modifications to make to a first version of a shared file to a conference server, the shared file having a property associated with it that is at least one of a version number and a file size; the conference server using the modifications to modify the first version of the shared file stored on a network to thereby create a current version of the shared file, the shared file property changing with the modification to a current property; at least a second video conference participant communicating a shared file property that corresponds to the first version of the shared file to the conference server together with a request to be notified of modifications to the shared file; and, the conference server communicating the modifications made to the first version of the shared file to only the at least a second conference participant, such that the conference server communicates the modifications to the shared file to only the at least one second conference participant that communicated a request to be notified of modifications to the shared file to the conference server, and wherein the server does not communicate the modifications to one or more others of the conference participants that did not communicate a request to be notified of modifications.