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:
Sep. 23, 2003
Filed:
Dec. 06, 1999
Sadakazu Shiga, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
An apparatus for turning on a computer power supply in which when an input operation of a predetermined key is carried out, predetermined H signals are output to a first signal line and a second signal line of a USB chip provided in a keyboard. Since this signal combination is not a USB standard signal combination, they can be distinguished from ordinary data signals. Since a wake-up device which has received these signals outputs predetermined start-up signals to a main power supply, the main power supply can be turned on. When the main power supply is turned on, connections of a first relay contact and a second relay contact of a switching device switch are switched, whereby first signal lines and second signals between the host computer and a keyboard are connected together, making it possible to carry out communication using the signals. By virtue of this structure, it is possible to start up the host computer whose main power supply is in an off state by operating the keyboard.