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:
Feb. 03, 2004
Filed:
Sep. 25, 2000
Hideshi Tsugane, Kanagawa, JP;
Hironobu Sasaki, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A key switch 102 formed by arranging a plurality of key contacts SW , SW , SW , SW ,—at cross points of a key matrix is provided with a power supply control key (SW ), and a key scan circuit for detecting open/close states of the plural key contacts of the key switch is independently arranged from a power supply control key state detecting means for detecting the open/close state of the contact SW of the power supply control key. The depression of the power supply control key (SW ) is detected by the power supply control key state detecting means. When the operation is ended, or the power supply is turned OFF, the depression of the power supply control key is detected by the key scan circuit , and the supply of the electric power is stopped.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile