| 摘要 |
PROBLEM TO BE SOLVED: To enable transfer or roaming of a user from a certain computer to the other computer by judging whether the present state of a system image changes from an initial state of the system image in response to an even or not. SOLUTION: A server 400 is communicated with a network computer(NC) 402 via a communication link 404. An image 406 is included in the NC 402, this means complete collection of user operation environment and for example, a system memory, a disk image, a register image, connection with a remote device, a network and processor state are included. A snapshot or copy of the image 406 is formed from the NC 402, a snapshot image is formed and stored on the server 400. The snapshot image is formed during session of the user on the NC 402 based on a specified cycle or in response to the selected event.
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