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:
Jan. 28, 2003
Filed:
Nov. 17, 1998
Hiroshi Kanzawa, Kawasaki, JP;
Kazuhiro Hata, Yokohama, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A transmission device including an advanced security system is provided to specify an illegally operated device, inhibit the illegal operations, prevent from forgetting to unlock a log-in status by a maintenance operator, and set permitted user level for each command. The security system for a transmission device in a network is formed with plural transmission devices each including, at least, a port for a control terminal, which controls the transmission devices, when a cable disconnection is detected in a port of one transmission device, a log-in status is unlocked for the one transmission device or the other transmission devices through the port.