KR100448229B1 - Method for controlling power of display device, especially controlling a digital switch to be on-state constantly - Google Patents

Method for controlling power of display device, especially controlling a digital switch to be on-state constantly Download PDF

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Publication number
KR100448229B1
KR100448229B1 KR1019970074276A KR19970074276A KR100448229B1 KR 100448229 B1 KR100448229 B1 KR 100448229B1 KR 1019970074276 A KR1019970074276 A KR 1019970074276A KR 19970074276 A KR19970074276 A KR 19970074276A KR 100448229 B1 KR100448229 B1 KR 100448229B1
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South Korea
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power
controlling
display device
switch
digital
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KR1019970074276A
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Korean (ko)
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KR19990054456A (en
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지 영 이
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삼성전자주식회사
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/30—Monitoring
    • G06F11/3058—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations
    • G06F11/3062—Monitoring arrangements for monitoring environmental properties or parameters of the computing system or of the computing system component, e.g. monitoring of power, currents, temperature, humidity, position, vibrations where the monitored property is the power consumption

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

PURPOSE: A method for controlling the power of display device is provided to save the power by operating the set through turning on the digital switch constantly when the power is supplied again. CONSTITUTION: A method for controlling the power of display device includes the steps of: erasing(S1) the information in the non-volatile memory device; verifying(S2) the state of the digital power switch; maintaining(S3) the display power management signaling(DPMS) when the power switch turns off; and releasing(S4) the DPMS when the power switch turns on.

Description

디스플레이 장치의 전원 제어 방법How to control the power of your display device

본 발명은 디스플레이 장치의 전원 제어방법에 관한 것으로서, 보다 상세하게는 디지탈 전원 스위치를 사용하는 디스플레이 장치의 효율적인 전원 재공급 방법에 관한 것이다.The present invention relates to a method for controlling power of a display device, and more particularly, to an efficient power resupply method of a display device using a digital power switch.

컴퓨터를 사용하는 도중에 정전이 되면 전원의 공급이 중단된다. 이때 사용자가 전원스위치를 오프시키지 않은채로 방치하는 경우가 있다. 특히 종래에는 아날로그 전원 스위치를 사용함에 따라, 기구적인면 또는 회로적인 면에서 별도의 부품을 추가적으로 필요로 하고 있다.If a power outage occurs while using the computer, the power supply will be interrupted. At this time, the user may leave the power switch without turning it off. In particular, according to the conventional analog power switch, additional components are required in terms of mechanical or circuit aspects.

모니터의 일측에 발광 다이오드를 이용하여 모니터의 전원 상태를 나타내지만 그 발광 다이오드의 크기가 작아서 쉽게 눈에 띄지 않는다. 이러한 이유로 모니터를 켜둔 상태로 방치하는 경우가 종종 발생한다. 이는 전력의 낭비를 초래함은 물론 모니터의 수명에도 악영향을 끼치는 등의 문제점도 있다.Although one side of the monitor uses a light emitting diode to indicate the power supply state of the monitor, the size of the light emitting diode is small and not easily noticeable. For this reason, it often happens that the monitor is left on. This not only causes waste of power but also adversely affects the life of the monitor.

또한 전원 스위치를 오프시키지 않은 상태로 전원 커넥터를 빼었다가 다시 연결하는 경우가 있다. 무의식중에 케이블을 연결하다가 갑자기 전원이 켜진다면 놀라게 사용자가 놀라게 된다. 만일 수리중이었다면 작업자가 위험할 수도 있으며, 회로상에 다른 부위가 접촉된 상태라면 위험성이 더할 수도 있다.Also, the power connector may be disconnected and then reconnected without turning off the power switch. If you unplug the cable and suddenly turn on the power, you will be surprised. If repairing, the operator may be at risk. If other parts of the circuit are in contact, there may be a risk.

본 발명은 이상에서 열거한 바와 같은 문제점을 해결하기 위한 것으로서 전원 케이블이 빠졌거나 정전된 경우를 자동으로 감지할 수 있는 전원 제어 방법에 관한 것이다.The present invention is to solve the problems as listed above, and relates to a power control method that can automatically detect when the power cable is missing or power failure.

본 발명의 다른 목적은 전원의 공급이 중단되었다가 재공급될 때의 디스플레이 장치의 전원을 절약할 수 있는 제어방법을 제공함에 있다.Another object of the present invention is to provide a control method for saving power of a display device when power supply is interrupted and then supplied again.

이러한 목적을 달성하기 위한 본 발명은 휘발성 기억장치(RAM)내의 정보를 소거하는 과정과, 디지탈 전원 스위치의 상태를 확인하는 과정과, 전원스위치가 오프(Off)상태이면 절전모드(DPMS)를 구현하는 과정과, 전원 스위치가 온(On)상태가 되면 절전모드(DPMS)를 해제하는 과정으로 진행되는 것을 특징으로 한다.In order to achieve the above object, the present invention implements a process of erasing information in a volatile memory device, a process of checking a state of a digital power switch, and a power saving mode (DPMS) when the power switch is in an off state. And the process of releasing the power saving mode DPMS when the power switch is turned on.

도 1은 본 발명에 따른 전원 제어방법을 나타내는 흐름도이다.1 is a flowchart illustrating a power control method according to the present invention.

도 1은 전원의 공급이 중단되었다가 재공급될 때의 디스플레이 장치의 전원제어 방법을 나타낸 흐름도이다.1 is a flowchart illustrating a power control method of a display apparatus when a supply of power is stopped and then supplied again.

디스플레이 장치의 마이컴은 AC 전원 케이블이 연결되어 있을 때 항상 VDD(5V)를 제공받을 수 있도록 설계되어 있다. 따라서 정전시나 AC 전원케이블이 연결되지 않은 상태에서는 마이컴의 VDD는 0 전위값(GND)을 갖는다. 정전후, 또는 전원 케이블을 통해 다시 5V의 전원이 마이컴에 공급되는 순간 마이컴은 하드웨어적으로 리셋(Reset)상태가 된다. 리셋(Reset)이 걸리는 순간 마이컴은 전원 제어를 수행하게 된다. 리셋이 걸리는 조건은 5V가 공급되지 않은 상태에서 다시 공급받는 경우이므로, 정전이나 전원 케이블의 비접속 상태를 감지할 수 있다. (S1 과정)The microcomputer of the display device is designed to always receive V DD (5V) when the AC power cable is connected. Therefore, in case of power failure or when the AC power cable is not connected, the microcomputer's V DD has a zero potential value (GND). After a power failure or when 5V power is supplied to the microcomputer again through the power cable, the microcomputer is reset in hardware. The moment the reset occurs, the microcomputer performs power control. Since the reset condition is when the 5V is not supplied again, the power failure or disconnection of the power cable can be detected. (S1 course)

리셋이 걸린 경우는 마이컴은 디지탈 전원 스위치의 상태를 확인한다.(S2 과정)In case of reset, Micom checks the status of the digital power switch.

디지탈 전원 스위치가 오프(Off)상태이면 마이컴만이 동작되어 전원절전모드(Display Power Management Signaling: DPMS)로 전환하여 스위칭을 대기하도록 제어한다.(S3 과정)If the digital power switch is in the OFF state, only the microcomputer is operated to switch to the display power management signal (DPMS) mode and wait for switching.

만일 사용자가 디지탈 전원 스위치를 온(ON)시키면 절전모드(DPMS)를 해제하고 정상동작할 수 있도록 한다.(S4 과정)If the user turns on the digital power switch, the power saving mode (DPMS) is released and normal operation is performed.

한편 생산시에는 AC 전원을 반복적으로 스위칭하는 불편함을 없애기 위해 팩토리 조정시에는 항상 디지탈 스위치가 온(ON)상태를 갖도록 한다.On the other hand, in order to eliminate the inconvenience of repeatedly switching the AC power supply during production, the digital switch should always be ON during factory adjustment.

본 발명은 어떠한 원인에 의해 전원 공급이 차단되었다가 다시 제공될 때 항상 디지탈 스위치를 온 시켜 세트가 동작되게 하므로써 절전효과 및 안전의 효과를 갖는다.The present invention has the effect of power saving and safety by always turning on the digital switch to turn on the digital switch when the power supply is cut off and provided again for any reason.

Claims (1)

전원의 공급이 중단되었다가 재공급될 때의 디스플레이 장치의 전원 제어 방법에 있어서;A method of controlling power of a display device when a supply of power is stopped and then supplied again; 휘발성 기억장치(RAM)내의 정보를 소거하는 과정과,Erasing information in volatile memory (RAM); 디지탈 전원 스위치의 상태를 확인하는 과정과,Checking the status of the digital power switch, 전원 스위치가 오프상태이면 절전모드(DPMS)를 구현하여 유지하는 과정과,If the power switch is off, the process of implementing and maintaining the power saving mode (DPMS), 전원 스위치가 온(On)상태가 되면 절전모드(DPMS)를 해제하는 과정을 구비하는 것을 특징으로 하는 디스플레이 장치의 전원 제어 방법.And releasing a power saving mode (DPMS) when the power switch is turned on.
KR1019970074276A 1997-12-26 1997-12-26 Method for controlling power of display device, especially controlling a digital switch to be on-state constantly KR100448229B1 (en)

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KR100448229B1 true KR100448229B1 (en) 2004-11-16

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KR100423995B1 (en) * 2002-05-15 2004-03-22 삼성전자주식회사 Apparatus and method for standby power control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950022103U (en) * 1993-12-04 1995-07-28 엘지전자주식회사 Display device by monitor power saving mode
JPH07306665A (en) * 1994-05-16 1995-11-21 Hitachi Ltd Simplified power management system for display device
KR970029272A (en) * 1995-11-29 1997-06-26 배순훈 Self-Testing Device of Monitor
KR970060903A (en) * 1996-01-15 1997-08-12 구자홍 Power saving control circuit of video equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950022103U (en) * 1993-12-04 1995-07-28 엘지전자주식회사 Display device by monitor power saving mode
JPH07306665A (en) * 1994-05-16 1995-11-21 Hitachi Ltd Simplified power management system for display device
KR970029272A (en) * 1995-11-29 1997-06-26 배순훈 Self-Testing Device of Monitor
KR970060903A (en) * 1996-01-15 1997-08-12 구자홍 Power saving control circuit of video equipment

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