Synchronization of side information caches
AssigneeResearch In Motion Limited
InventorsEn-Hui Yang, Ajit Singh, Salmaan Ahmed, David P. Sze
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Abstract
In order to improve interactive compression using compression state information, the side information caches of communicating parties must be updated, or synchronized. The present invention is directed to a method of synchronizing side information databases within an interactive compression system comprising two communicating parties comprising the steps of transmitting, from the a first communicating party to the second communicating party, a device hierarchical node index; comparing the device hierarchical node index with a server hierarchical node index and then determining a shared hierarchical node index based on common entries in the two hierarchical node indexes.
Claims24
A method of synchronizing side information for use within an interactive compression system including a mobile communication device and a server, the method comprising:
- comparing side information known to the mobile communication device to side information known to the server;
- and
- identifying common side information, including compression state information, known to both the mobile communication device and the server.
A mobile communication device comprising:
- a side information database storing side information entries, including compression state information entries, for use in interactive compression between the mobile communication device and a server;
- a processor to synchronize the side information entries with side information stored at the server by comparing the side information stored at the server to the side information entries to identify common side information.
A server comprising:
- a side information database storing side information entries, including compression state information entries, for use in interactive compression with a mobile communication device;
- a processor to synchronize the side information entries with side information stored at the mobile communication device by comparing the side information stored at the mobile communication device to identify common side information.
Dependencies are inferred from the claim text.