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:
Nov. 08, 2005
Filed:
Jan. 12, 2001
Sadakazu Shiga, Fukushima-ken, JP;
Sadakazu Shiga, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
In order to turn on the main power unit, when it is off, of a computer in a turned-off state from a keyboard, power is supplied from an auxiliary power unit to a USB controller on the keyboard unit side and a power supply startup unit on the computer side, and on the other hand when power supply to a line switching unit is cut off, switching sections are switched over to connect signal lines of the USB controller and input terminals of a differential amplifying unit, respectively. When a specific signal is supplied from the keyboard unit, a power supply startup signal (power ON signal) is supplied from the power supply startup unit to the main power unit to enable the main power unit to be started up.