METHOD AND SYSTEM FOR EFFICIENTLY REDUCING GRAPHICAL DISPLAY DATA FOR TRANSMISSION OVER A LOW BANDWIDTH TRANSPORT PROTOCOL MECHANISM

摘要

The present invention improves the performance of distributed systems by reducing the amount of graphical data transmitted betweenan application server and a thin client. The encoding technique used for graphical data is adapted in response to the repetitiveness of the graphical data during a particular client-server session. Indexes are maintained that are indicative of this repetitiveness and which identify a particular location in the client's cache memory storing the graphical data. Where the index is not found, but a fuzzy key indicates a strong likelihood that the graphical object is located at the client, the client's persistent storage memory is searched for a file name corresponding to the fuzzy key and which stores the graphical object therein. The invention also adapts the processing rate or encoding technique of the server in response to network changes or performance mismatches between the client and server.