Patent ID: 6442587
Filing Date: 2002-08-27
Classification: G06F,H04L

Abstract:
A client/server system comprising:a server which supervises data; a plurality of clients for which the server supervises data in a memory unit in the server, each client down-loads data, which is required for a data processing in each client, from the server and returns the data to the server after the data processing is finished, each of said clients comprising: a data receiving process downloading the data from the server: a server supervisor that determines whether the server is in correct operation or is down by sending data to the server without receiving an inquiry from said server; a not-yet-transferred data memory for storing, during operation as a client and when the server supervisor determines that the server is not in operation, not-yet-transferred data to be returned to the server when the server returns to operation; a not-yet-transferred data writing process, during operation as a client, writing the not-yet-transferred data to the not-yet-transferred data memory when the server supervisor determine that the server is not in operation; a not-yet-transferred data confirming process, during operation as a client, checking whether the not-yet-transferred data to be transferred to the server is present in the not-yet-transferred data memory; and a not-yet-transferred data transferring process, during operation as a client, transferring the not-yet-transferred data to the server, when the not-yet-transferred data confirming process confirms that the not-yet-transferred data is present in the not-yet-transferred data memory and the server supervisor confirms that the server is in operation.