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:
Jul. 09, 2002
Filed:
Apr. 07, 1999
Woo-Il Park, Seoul, KR;
Samsung Electronics, Co., Ltd., Suwon, KR;
Abstract
A portable computer is provided with a sensing device which responds to absence of the computer user so that the computer system instantly goes into a power saving function that cuts off power directed to a back-light unit of the LCD display panel. The sensing device includes a sensor for sensing a computer user within the predetermined sensing range, this sensor being mounted in the housing of the flat panel display with facing the computer user, to produce a signal representative of absence of the user within the range; and a controller in response to the output signal of said sensor to produce a control signal which allows the supply power directed to the flat panel display to be interrupted. The sensing signal consists of ultrasonic wave or infrared rays. The user sensing device of the portable computer continuously monitors the computer user. If the user has left the computer, the computer system immediately goes into the power saving function that turns off the back-light unit of the LCD display panel.