The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 20, 2001
Filed:
Mar. 29, 2000
Shinichi Nomura, Chiba, JP;
Seiko Seiki Kabushiki Kaisha, , JP;
Abstract
A communication abnormality detecting/coping device and a vacuum pump remote monitor control device are provided, which are capable of detecting the presence/absence of an abnormality in data communication and reducing an influence of the abnormality on a system device when detecting the abnormality. An operation acknowledge message,is transmitted to a system device (,) from a turbo-molecular pump control device (,) in Step,A reply message (,) indicative of the reception of the operation acknowledgement message,by the system device (,) is transmitted to the turbo-molecular pump control device (,) in Step,In Step,an elapsed period of from a time at which the operation acknowledgement message (,) is transmitted to a time at which a reply message (,) is received is measured, and if the elapsed period exceeds the preset period, the abnormality in the communication system is warned in Step