Patent ID: 6249817
Filing Date: 2001-06-19
Classification: H04L

Abstract:
A data-update monitor server connected to a server via a network for monitoring update of specific data stored in said server via said network and transferring information obtained as a result of the update monitor to a client, said data-update monitor server comprising:storage means for storing the specific data;access means for accessing said server based on information that represents an address of the specific data and is given by said client;update checking means for, when said access means accesses said server, checking update of the specific data;difference data specifying means for, when it is determined that the specific data have been updated as a result of the update check by said update checking means, specifying a non-coincident portion of updated specific data transmitted from said server and received by said access means, which does not coincident with the non-updated specific data stored in said storage means, as difference data; andtransfer means for transferring specific information included in the specified difference data to said client.