KR960042299A

KR960042299A - Power-saving circuit for computer wake-up

Info

Publication number: KR960042299A
Application number: KR1019950011717A
Authority: KR
Inventors: 박희덕
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1995-05-12
Filing date: 1995-05-12
Publication date: 1996-12-21

Abstract

본 발명은 컴퓨터가 절전상태로 되어 있을 경우(AC Power Off)에 외부 입력 신호를 받았을 때 자동으로 전원을 온(On)시키는 기능을 구현하기 위하여 외부 입력 신호를 감지하는 전력 공급회로로서, 주 전원 입력단자와 보조 전원 입력 단자 및 장치 전원 출력 단자 사이에 각각 한개씩의 피-채널 모스 트랜지스터와 앤-채널 모스 트랜지스터를 본 발명에 따른 방식으로 연결하여 상기 각각의 전원 입/출력 단자들과 접속시켜서 구성되어, 시스템으로부터 전원을 공급받는 키보드 또는 팩스/모뎀 또는 마이크로-프로세서 등의 장치에 전원을 공급해주는데 있어서 시스템이 주 전원 오프상태(AC Power Off)일 경우에만 보조 전원(Battery)을 사용하도록 하여 보조 전원의 사용을 절감하여 정전시 데이타 자동 보관 및 자동 웨이크-업(Auto Wake-Up) 기능을 원활하게 하며 컴퓨터의 키보드 제어부로 유기되는 보조 전원을 차단하여 보조 전원의 사용을 최대한으로 하는 효과를 볼 수 있다.The present invention provides a power supply circuit for sensing an external input signal to implement a function of automatically turning on the power when an external input signal is received when the computer is in a power saving state (AC Power Off). One P-channel MOS transistor and an N-channel MOS transistor are connected between the input terminal, the auxiliary power input terminal, and the device power output terminal, respectively, in the manner according to the present invention, and are connected to the respective power input / output terminals. Powering a device such as a keyboard, fax / modem, or micro-processor powered by the system, the auxiliary power should be used only when the system is in the AC Power Off state. Reduced power usage facilitates automatic data archiving and auto wake-up in case of power failure By blocking the auxiliary power induced by the keyboard controller of the emitter you can see the effect of the use of auxiliary power as much as possible.

Description

Power-saving circuit for computer wake-up

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 본 발명에 따른 컴퓨터 시스템에 있어서의 주(Main) 전원 및 배터리(Battery) 전원 전환 회로의 구성도이다.3 is a configuration diagram of a main power supply and a battery power switching circuit in the computer system according to the present invention.

Claims

Power-saving circuitry that provides power for use by any one of the peripherals that can be detected in wake-up standby depending on the on or off state of the main power supply A main power input terminal supplied from a power supply; A power supply terminal supplied from an auxiliary power source (Battery); An auxiliary power output terminal used by the respective devices in a wake-up standby state in the main power off state; A signal line auxiliary resistor; A source terminal is connected to the main power input terminal and is connected to a ground terminal of a main power supply through the signal line correction resistor, and a gate terminal is connected to a ground terminal of a main power supply through the signal line correction resistor. Field effect transistor; And a drain and a source terminal of the first field effect transistor are connected to the auxiliary power output terminal, and a gate terminal of the first field effect transistor is connected to the main power input terminal to supply a main signal through the signal correction resistor. And a drain terminal connected to the ground terminal of the power supply, the drain terminal comprising a second field effect transistor connected to the auxiliary power input terminal.

The power saving circuit for computer wake-up of claim 1, wherein the first field effect transistor is an N-channel MOS field effect transistor.

The power saving circuit for computer wake-up of claim 1, wherein the second field effect transistor comprises a P-Channel MOS field effect transistor.

※ Note: The disclosure is based on the initial application.