Patent ID: 7225046

Claim:
A remote control system for one or more semiconductor manufacturing apparatuses comprising: a local area network system comprising a plurality of host devices each connected with one or more semiconductor manufacturing apparatuses, and a router connected with said host devices; and a remote operation device including a router that accesses said host devices by way of a communication line; wherein said host devices are each provided with an IP routing function for achieving remote control operation from said remote operation device, and a communication element having a call incoming function of receiving a call incoming from said communication line, and said host devices each perform user authentication when said remote operation device connects to said host devices, so that said remote operation device thus authenticated can individually simultaneously display a same screen as that displayed on each of said host devices, permitting said remote operation device to remotely control and operate said host devices, wherein said remote operation device thus authenticated replaces operation parameter files of said host devices through remote control.