Patent ID: 8375304

Claim:
A system for maintaining a state of a webpage on a server, the webpage displayed on a client device, the system comprising: a processor and a memory, the memory comprising instructions when partly executed by the processor, cause the system to: receive a request for a part of the webpage from the client device; determine an image corresponding to the part of the requested webpage, the determined image not including an image of the whole webpage; transmit the determined image to the client device; adjust a sample interval to a value higher than a previous value of the sample interval responsive to determining that the requested webpage has not changed for a threshold time period; determine a second image corresponding to the part of the requested webpage the sample interval after the determined image; transmit the determined second image to the client device; and store, at the server, state information associated with the part of the webpage corresponding to the transmitted image, the state information including a cookie associated with the webpage or the client device.