Patent ID: 8516050
Filing Date: 2013-08-20
Classification: G06F,G06Q,H04L,H04M,H04N

Abstract:
1. A method for communicating a file modification among at least at least five computers over a data network, each of the at least five computers corresponding to a participant in a video conference occurring over the network, wherein at least one server facilitates communications among the at least five participants and each of the at least five first computers has a user presence application for listing others of the first computers that are participating in the video conference, wherein the file comprises one or more shared files that may be accessed and modified by any of the at least five participants, the one or more shared files collectively contain a list of the at least five participants that are participating in the video conference, the method comprising: a first computer communicating only one file modification status request to a second computer until the first computer receives a modification confirmation, the status request including at least a file identifier and a file property; the second computer using the file identifier from the request to identify a current property of a corresponding file; and, the second computer comparing the current file property to the file property from the status request and communicating a modification confirmation to the first computer only when the current property does not match the property from the status request.