Patent ID: 7616208

Claim:
A method comprising: dividing a display screen of a moderator digital processing system into a plurality of tiles, the display screen containing a plurality of pixels, a tile of the plurality of tiles containing a portion of the plurality of pixels; creating a display data segment corresponding to the tile using a bitmap of the tile stored in a memory, the display data segment containing a pixel data of the corresponding tile; storing the display data segment on a server digital processing system; evaluating the tile to determine if the pixel data of the tile has changed, wherein evaluating the tile comprises comparing a current version of the tile, which is currently being displayed on the moderator digital processing system, with a first version of the tile used to create the display data segment stored on the server digital processing system; creating an updated display data segment corresponding to the tile for which the pixel data has changed, wherein creating an updated display comprises accessing only those display data segments having a latest time stamp indicator, the updated display data segment containing an updated pixel data of the corresponding tile; and storing the updated display data segment on the server digital processing system such that the corresponding stored display data segment is replaced, wherein prior to storing, the updated display data segment can be updated several times before it is determined current and an amount of memory required on the server digital processing system is limited only to the current updated data display segment.