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:
May. 29, 2001
Filed:
May. 12, 1998
Kyoung Hwan Cha, Seoul, KR;
Daewoo Telecom Ltd., Incheon, KR;
Abstract
A power on/off control device having a first power supply outputs a predetermined first electric power upon receiving input power and a second power supply outputs a main electric power to operate the computer upon power-on, which is turned on and off according to power driving signals of a first level or a second level. A power switch outputs a first level while the power switch is being pressed down, and a second level while not pressed down. A power driving signal output outputs power driving signals of the first level or of the second level alternatively according to inputted pulse signals from a microprocessor, the microprocessor has a first port connected with the power switch and a second port coupled with the power driving signal output, for controlling power on/off according to signal levels from the first port and the second port. A data output forwards data outputted from the microprocessor to a system data bus. A data input sends data inputted through the system data bus to the microprocessor. The microprocessor detects on/off status of computer according to signal levels inputted through the second port and outputs pulse signals to the power driving output according to the signal levels from the power switch and command data from the data input.