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.

Date of Patent:
Feb. 15, 2005

Filed:

May. 12, 1999
Applicants:

Mayuko Tanaka, Chiyoda-Ku, JP;

Yoshimichi Kudo, Chiyoda-ku, JP;

Tsukasa Hasegawa, Chiyoda-ku, JP;

Inventors:

Mayuko Tanaka, Chiyoda-Ku, JP;

Yoshimichi Kudo, Chiyoda-ku, JP;

Tsukasa Hasegawa, Chiyoda-ku, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08B021/00 ;
U.S. Cl.
CPC ...
Abstract

An electronic device connected to a network corresponding to plug & play and hot plug functions and enabled to control other electronic devices is provided with communication route detecting unit for detecting a communication route between electronic devices being used or reserved for communication and notifying unit for notifying the user of a result of detection by the communication route detecting unit. The above-described electronic device is configured so as to detect a communication route between subject electronic devices to be used for communication and notify the user of the electronic devices on the communication route, which must not be disconnected from the network with use of the communication unit. Consequently, the user can be prevented from accidental disconnection of the cable of a subject electronic device, thereby preventing the disconnection of the device from the network.


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