Real time bit map capture and sharing for collaborative tools

Details Real time bit map capture and sharing for collaborative tools Real time bit map capture and sharing for collaborative tools

1997-10-24

2000-11-21

Sax, Steven

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

345346, G06F 1300

Patent

active

061510203

ABSTRACT:
A new system and method for sharing graphical display information in a collaborative tool is disclosed which samples graphics display information regarding a shared display region on a server system. The disclosed system updates client systems regarding changes in the shared display region responsive to detection of a change in the shared display region contents. The disclosed system further modifies a polling rate used to sample the graphical display information on the server responsive to the frequency of changes to the shared display region. Specifically, in an example embodiment the disclosed system shares a display region among a plurality of users by selecting a first bit map from a series of bit maps used to display the shared display region on a server system. The server system then transmits said first bit map to a client system. The server system periodically selects a subsequent bit map from the series of bit maps at a polling rate. The server system later determines whether said shared display region on the server system has changed. If the shared display region has changed, then the server system transmits a representation of the subsequent bit map to said client system. The server system increases the polling rate responsive to determining that the shared display region on the server system has changed.

REFERENCES:
patent: 5694544 (1997-12-01), Tanigawa et al.
patent: 5748930 (1998-05-01), Prakash
patent: 5790127 (1998-08-01), Anderson et al.
patent: 5793365 (1998-08-01), Tang et al.
patent: 5805846 (1998-09-01), Nakajima
"An X Imaging Server" by Larry Palmer and Ricky Palmer, published Nov. 4, 1987.

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