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:
Oct. 09, 2007
Filed:
Nov. 19, 2003
Makoto Miyake, Osaka, JP;
Yoshihide Komatsu, Osaka, JP;
Makoto Miyake, Osaka, JP;
Yoshihide Komatsu, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
In data communication apparatus for communicating with another data communication apparatus via cables, when a power supply voltage applied to the data communication apparatus drops and the application of the power supply voltage is stopped, a power-supply-voltage-drop detecting circuit immediately detects the drop in the power supply voltage, thereby detecting the stop of application of the power supply voltage. When the stop of the power supply is detected, a stop signal outputting circuit outputs a communication stop signal to said another data communication apparatus. Accordingly, when power supply is stopped in one of the two pieces of data communication apparatus, it is possible to prevent a malfunction from occurring in the other data communication apparatus.