Factories (102–104) have host computers (107) for monitoring industrial equipment (106). Each host computer (107) is connected to a management host computer (108) on a vendor (101) side through the internet (105). The host computer (107) on the factory side detects occurrence of a trouble of the industrial...http://www.google.de/patents/US7062343?utm_source=gb-gplus-sharePatent US7062343 - Remote maintenance system
