Method and system for supporting off-line mode of operation and synchronization using resource state information

CAFC
  • US 6,578,054 B1
  • Filed: 10/04/1999
  • Issued: 06/10/2003
  • Est. Priority Date: 10/04/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. In a networked system including a server and a client, wherein the server stores a resource, a method of enabling a client to access the resource, comprising the steps of:

  • transmitting, from the server to the client, resource state information that represents the state of the resource stored at the server at a selected moment;

    transmitting, from the server to the client, a copy of the resource as it exists at the server at the selected moment;

    storing the copy of the resource in a local store associated with the client;

    modifying the copy of the resource stored in the local store;

    transmitting the modified copy and the resource state information from the client to the server;

    based on the resource state information transmitted to the server, determining whether the resource stored at the server has changed since the selected moment; and

    if it is determined that the resource stored at the server has not changed, replacing the resource stored at the server with the modified copy.

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