Boots – shoes – and leggings
Patent
1996-04-23
1998-08-04
Harrity, John E.
Boots, shoes, and leggings
395551, 364271, 364DIG1, G06F 15163
Patent
active
057908052
ABSTRACT:
A method, apparatus, and article of manufacture for establishing an unlimited number of independent, client-based timers, synchronized with a timer kept on a central server, is disclosed. After forming a client-server connection, a client sends a synchronization message to a server. The client receives a return synchronization message from the server, and computes a round-trip interval time between sending and receiving, by sampling a local hardware clock. The sending and receiving of synchronization messages continues for a predetermined number of times, until the client receives a final synchronization message from the server, the final synchronization message including the current local server time. The client then calculates the average one-way trip interval and adds that value to the received current local server time, to provide the client with a reliable estimate of the local server time. By calculating the difference between the client's own local time and the calculated local server time, a constant is derived which can be used to calculate local server time for any and all future client local times.
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Harrity John E.
NCR Corporation
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