Patent ID: 7925792

Claim:
A device information negotiating system, comprising: a synchronization client device; a synchronization server device; and a device information server configured to store device information of devices and a corresponding relation between the device information and identifiers identifying the device information of the devices, the device information being used for content adaptation during synchronization, and provide stored device information of a given device, by using the stored corresponding relation, according to a identifier identifying the device information of the given device; wherein the synchronization client device is further configured to send a data synchronization initialization request, over a network, carrying a first identifier identifying the device information of the synchronization client device to the synchronization server device to initiate a data synchronization process, access the device information server with a second identifier identifying the device information of the synchronization server device, the second identifier being carried in a data synchronization initialization response sent by the synchronization server device to the synchronization client device, and acquire the device information of the synchronization server device, using the second identifier, from the device information server device; wherein the synchronization server is further configured to access the device information server with the first identifier, acquire the device information of the synchronization client device, using the first identifier, from the device information server, and send the data synchronization initialization response to the synchronization client device; wherein the device information server is further configured to respectively perform an information interaction with the synchronization client device and the synchronization server device, and respectively provide the requested device information to the synchronization client device and the synchronization server device.