KR20000008129A - Super power saving device for monitor - Google Patents

Super power saving device for monitor Download PDF

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Publication number
KR20000008129A
KR20000008129A KR1019980027813A KR19980027813A KR20000008129A KR 20000008129 A KR20000008129 A KR 20000008129A KR 1019980027813 A KR1019980027813 A KR 1019980027813A KR 19980027813 A KR19980027813 A KR 19980027813A KR 20000008129 A KR20000008129 A KR 20000008129A
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KR
South Korea
Prior art keywords
power saving
power
monitor
saving control
switching
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KR1019980027813A
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Korean (ko)
Inventor
한창우
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구자홍
엘지전자 주식회사
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Priority to KR1019980027813A priority Critical patent/KR20000008129A/en
Publication of KR20000008129A publication Critical patent/KR20000008129A/en

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Classifications

    • 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
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3218—Monitoring of peripheral devices of display devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving

Abstract

PURPOSE: A super power saving device for a monitor is provided to minimize the power consumption of a monitor by completely stopping the driving of a power oscillator to control a first power switching cycle of a switching power circuit(SMPS) of the monitor when the monitor is in the power saving mode. CONSTITUTION: A high signal outputs from a power saving control ports(PORT1, PORT2) by judging a power saving mode in a power saving control microcomputer unit(80) when the one signal among a horizontal and a vertical synchronous signals from a PC(70).; A receiving transistor of a light contactor(PC1) becomes the on state by inputting the high signal in a transmitting diode of the light contactor(PC1).; A power oscillator(40) completely stops a driving operation by a power saving control signal of the power saving control microcomputer unit(80) inputted from the receiving transistor of the light contactor(PC1).; A secondary output power of a switching power circuit(30) does not generate because the first power of the switching power circuit(30) did not switch; The power saving effect raise because the power consumption from the monitor closed to the '0V' during operating the power saving mode.

Description

모니터의 전원 초절전장치Power-saving power saving device of the monitor

본 발명은 모니터의 전원회로에 있어서, 특히 모니터가 절전모드일 경우 모니터의 스위칭전원회로(SMPS)의 1차측 전원 스위칭주기를 제어하는 전원발진부의 구동을 완전히 정지시켜 모니터에서의 소모전력을 최소화하기 위한 모니터의 전원 초절전장치에 관한 것이다.The present invention is to minimize the power consumption of the monitor in the power supply circuit of the monitor, in particular when the monitor is in the power saving mode by completely stopping the drive of the power source oscillator that controls the primary power switching cycle of the switching power supply circuit (SMPS) of the monitor It relates to a power saving device of the monitor.

종래 모니터의 전원 절전장치의 구성은 도 1에 도시된 바와같이, 전원플러그(10)로부터 입력되는 교류전원을 직류전원으로 정류하는 정류부(20)와, 상기 정류부(20)에서 출력된 직류전원을 권선비에 대응해 소정레벨 증폭하여 절전회로부(50)로 출력하는 스위칭전원회로(30)와, 상기 스위칭전원회로(30)의 1차측 전원 스위칭 주기를 제어하는 전원발진부(40)와, 상기 스위칭전원회로(30)에서 출력된 전압을 회로 각 부분에 공급하고 마이컴(60)의 제어를 받아 전원발진부(40)의 구동주기를 제어하는 절전회로부(50)와, PC(70)로부터 수평 및 수직동기신호를 입력받아 모니터의 절전조건을 판단하고 판단결과 절전모드이면 절전회로부(50)로 절전제어신호를 출력하는 마이컴(60)으로 구성된다.As shown in FIG. 1, the power saving device of the conventional monitor includes a rectifying unit 20 for rectifying AC power input from the power plug 10 into a DC power source, and a DC power output from the rectifying unit 20. A switching power supply circuit 30 for amplifying a predetermined level in response to a turns ratio and outputting the power to the power saving circuit section 50, a power supply oscillation section 40 for controlling a primary power supply switching cycle of the switching power supply circuit 30, and the switching power supply; The power saving circuit unit 50 which supplies the voltage output from the circuit 30 to each part of the circuit and controls the driving cycle of the power source oscillation unit 40 under the control of the microcomputer 60, and horizontal and vertical synchronization from the PC 70. The microcomputer 60 outputs a power saving control signal to the power saving circuit unit 50 in response to a signal to determine the power saving condition of the monitor and determines that the power saving mode.

상기와 같이 구성된 종래 모니터의 전원 절전장치의 동작을 도 1을 참조하여 설명하면, 먼저 PC(70)의 타이머에 설정된 일정시간동안 PC를 사용하지 않을 경우 전력소모를 줄이기 위해 모니터는 절전모드 상태가 된다.The operation of the power saving device of the conventional monitor configured as described above will be described with reference to FIG. 1. First, the monitor is in a power saving mode to reduce power consumption when the PC is not used for a predetermined time set in the timer of the PC 70. do.

이때, 모니터의 마이컴(60)에서 PC(70)로부터 수평(H-sync) 및 수직(V- sync)동기신호를 입력받아 모니터의 절전조건을 판단하는데, 수평 및 수직동기신호가 모두 입력될 경우에는 노말모드로 판단하여 절전회로부(50)의 절전모드단자로 로우신호를 출력한다.At this time, the microcomputer 60 of the monitor receives the horizontal (H-sync) and vertical (V-sync) synchronization signal from the PC 70 to determine the power saving condition of the monitor, when both the horizontal and vertical synchronization signal is input In the normal mode, the low signal is output to the power saving mode terminal of the power saving circuit unit 50.

상기 절전회로부(50)의 절전모드단자로 로우신호가 입력되면 전원발진부(40)는 정상적으로 구동되며 따라서 스위칭전원회로(30)의 2차측에서도 정상전압이 발생한다.When a low signal is input to the power saving mode terminal of the power saving circuit unit 50, the power generator 40 is normally driven, and thus a normal voltage is generated on the secondary side of the switching power supply circuit 30.

그리고, 상기 스위칭전원회로(30)의 2차측에서 발생된 전압은 절전회로부(50)를 통해 마이컴(60) 및 2차측 회로 각 부분에 공급된다.The voltage generated at the secondary side of the switching power supply circuit 30 is supplied to each of the microcomputer 60 and the secondary circuit through the power saving circuit unit 50.

반면, PC(70)로부터 수평 또는 수직동기신호중 하나의 신호만 입력될 경우 마이컴(60)에서는 모니터를 절전모드로 제어하기 위해 절전회로부(50)의 절전모드단자로 하이신호를 출력한다.On the other hand, when only one signal of the horizontal or vertical synchronization signal is input from the PC 70, the microcomputer 60 outputs a high signal to the power saving mode terminal of the power saving circuit unit 50 to control the monitor to the power saving mode.

이때, 상기 절전회로부(50)에서는 절전모드단자로 하이신호가 입력되면 전원발진부(40)의 구동주기를 제어하여 스위칭전원회로(30)의 2차측에 발생되는 전압이 노말모드 동작시보다 낮게 출력되도록 한다.In this case, when the high signal is input to the power saving mode terminal, the power saving circuit unit 50 controls the driving period of the power supply oscillator 40 to output a voltage generated at the secondary side of the switching power supply circuit 30 lower than during normal mode operation. Be sure to

그리고, 상기 스위칭전원회로(30)에서 출력된 전압을 절전제어부(50)에서는 마이컴(60)과 일부회로에만 공급함으로써 절전기능을 수행한다.The power saving control unit 50 supplies the voltage output from the switching power supply circuit 30 only to the microcomputer 60 and a part of the circuit to perform the power saving function.

종래 기술에서는 모니터의 마이컴에서 PC로부터 수평 및 수직동기신호를 입력받아 절전모드를 판단하기 때문에 상기 마이컴에는 절전모드 상태에서도 계속해서 전원이 공급되어야 한다. 이로 인해 전원발진부의 구동을 절전모드 상태에서 완전히 구동정지시키지 못해 절전효율이 저하되는 문제점이 있었다.In the related art, the microcomputer of the monitor receives the horizontal and vertical synchronization signals from the PC to determine the power saving mode. Therefore, the microcomputer must be continuously supplied with power even in the power saving mode. As a result, the driving of the power generator does not stop driving completely in the power saving mode, thereby reducing the power saving efficiency.

본 발명에서는 상기와 같은 문제점을 해결하기 위해 PC로부터 일정전압을 공급받아 PC에서 출력되는 수평 및 수직동기신호의 입력상태를 감지해 모니터의 절전조건을 판단하는 절전제어마이컴부를 구성하여 PC로부터 수평 및 수직동기신호중 하나의 신호만 입력 즉, 절전모드이면 전원발진부의 구동을 완전히 정지시켜 모니터 스위칭전원회로의 2차측 출력전압을 차단시킴으로써, 모니터에서의 전력소모를 '0'에 가까운 수준으로 하여 절전효과를 극대화하였다.In the present invention to solve the above problems by receiving a constant voltage from the PC to detect the input state of the horizontal and vertical synchronous signal output from the PC to configure the power saving control microcomputer to determine the power saving conditions of the monitor by When only one signal of the vertical synchronization signal is input, that is, in the power saving mode, the operation of the power supply oscillator is completely stopped to cut off the secondary output voltage of the monitor switching power supply circuit, thereby reducing power consumption of the monitor to a level close to '0'. Maximized.

도 1은 종래 모니터의 전원 절전장치의 구성도1 is a configuration diagram of a power saving device of a conventional monitor

도 2는 본 발명 모니터의 전원 초절전장치의 구성도2 is a configuration diagram of a power supply ultra-power saving device of the monitor of the present invention

본 발명 모니터의 전원 초절전장치의 구성은 도 2에 도시된 바와같이, 전원플러그(10)로부터 입력되는 교류전원을 직류전원으로 정류하는 정류부(20)와, 상기 정류부(20)에서 출력된 직류전원을 소정레벨 증폭하여 절전회로부(50)로 출력하는 스위칭전원회로(30)와, 상기 스위칭전원회로(30)의 1차측 전원 스위칭 주기를 제어하는 전원발진부(40)와, 상기 스위칭전원회로(30)에서 출력된 전압을 마이컴(60)과 회로 각 부분에 공급하는 절전회로부(50)와, 상기 스위칭전원회로(30)에서 일정전압(VCC2)을 입력받아 모니터 각 부를 제어하는 마이컴(60)과, PC(70)로부터 일정전압(VCC1)을 공급받아 PC(70)에서 출력되는 수평 및 수직동기신호의 입력상태를 감지해 모니터의 절전조건을 판단하고 판단결과 절전모드이면 전원발진부(40)가 정지되도록 제어하는 절전제어마이컴부(80)와, 상기 절전제어마이컴부(80)에서 출력되는 절전제어신호를 전원발진부(40)로 인가해 주는 광결합기(PC1)와, 절전모드 상태임을 표시하기 위한 발광다이오드(LED1)로 구성된다.As shown in FIG. 2, the configuration of the ultra-power saving device of the monitor of the present invention includes a rectifying unit 20 for rectifying AC power input from the power plug 10 into a DC power source, and a DC power output from the rectifying unit 20. Switching power supply circuit 30 for amplifying a predetermined level and outputting the power to the power saving circuit unit 50, a power supply oscillation unit 40 for controlling a primary power supply switching cycle of the switching power supply circuit 30, and the switching power supply circuit 30. Power saving circuit unit 50 for supplying the voltage output from the microcomputer 60 and the respective circuit parts, and the microcomputer 60 to control the monitor by receiving a constant voltage (V CC2 ) from the switching power supply circuit 30. And, by receiving a constant voltage (V CC1 ) from the PC 70 detects the input state of the horizontal and vertical synchronous signal output from the PC 70 to determine the power saving condition of the monitor, and if the power saving mode determines that the power oscillator 40 Power saving control my to control) The unit 80, an optical coupler PC1 for applying the power saving control signal output from the power saving control microcontroller 80 to the power source oscillator 40, and a light emitting diode LED1 for indicating the power saving mode. It is composed.

상기와 같이 구성된 본 발명 모니터의 전원 초절전장치의 작용효과를 도 2를 참조하여 설명하면 다음과 같다.Referring to Figure 2 describes the operation and effect of the ultra-power saving device of the present invention configured as described above.

먼저, 절전제어마이컴부(80)에서는 PC(70)로부터 일정전압(VCC1)을 공급받아 PC(70)에서 출력되는 수평(H-sync) 및 수직동기신호(V-sync)의 입력상태를 감지해 모니터의 절전조건을 판단한다.First, the power saving control microcomputer unit 80 receives a constant voltage V CC1 from the PC 70 to determine an input state of the horizontal (H-sync) and vertical synchronization signals (V-sync) output from the PC 70. Detect the monitor's power saving conditions.

이때, PC(70)로부터 수평 및 수직동기신호가 모두 입력될 경우 절전제어마이컴부(80)에서는 노말모드로 판단하여 절전제어단자(PORT1,PORT2)에서 로우신호가 출력된다.At this time, when both the horizontal and vertical synchronization signals are input from the PC 70, the power saving control microcomputer 80 determines that the normal mode is a low signal is output from the power saving control terminals (PORT1, PORT2).

그러므로, 광결합기(PC1)의 송신측 다이오드에는 로우신호가 입력되어 광결합기(PC1)의 수신측 트랜지스터는 오프상태가 된다.Therefore, a low signal is inputted to the transmitting diode of the optical coupler PC1 so that the receiving transistor of the optical coupler PC1 is turned off.

상기 광결합기(PC1)의 수신측 트랜지스터가 오프되면 전원발진부(40)는 정상적으로 구동되어 스위칭전원회로(30)의 2차측에서는 정상전압이 발생하며 이 전압은 절전회로부(50)를 통해 마이컴(60)과 회로 각 부분으로 공급된다.When the receiving transistor of the optical coupler PC1 is turned off, the power supply oscillator 40 is normally driven so that a normal voltage is generated on the secondary side of the switching power supply circuit 30, and the voltage is controlled by the microcomputer 60 through the power saving circuit unit 50. ) And circuits.

반면, PC(70)로부터 수평 및 수직동기신호중 하나의 신호만 입력될 경우 절전제어마이컴부(80)에서는 절전모드로 판단하여 절전제어단자(PORT1,POR2)에서 하이신호가 출력된다.On the other hand, when only one signal of the horizontal and vertical synchronization signal is input from the PC 70, the power saving control microcomputer 80 determines the power saving mode and outputs a high signal from the power saving control terminals PORT1 and POR2.

그러므로, 광결합기(PC1)의 송신측 다이오드에는 하이신호가 입력되어 광결합기(PC1)의 수신측 트랜지스터는 온상태가 된다.Therefore, a high signal is input to the transmitting diode of the optical coupler PC1, and the receiving transistor of the optical coupler PC1 is turned on.

이때, 전원발진부(40)는 상기 광결합기(PC1)의 수신측 트랜지스터로부터 입력된 절전제어마이컴부(80)의 절전제어신호에 의해 구동동작을 완전히 멈추게 된다.At this time, the power source oscillator 40 completely stops the driving operation by the power saving control signal of the power saving control microcomputer unit 80 inputted from the receiving transistor of the optical coupler PC1.

한편, 상기 전원발진부(40)의 구동이 완전히 정지되면 스위칭전원회로(30)의 1차측 전원이 스위칭되지 못해 스위칭전원회로(30)의 2차측 출력전압은 발생하지 않는다.On the other hand, when the driving of the power source oscillator 40 is completely stopped, the primary side power supply of the switching power supply circuit 30 is not switched and the secondary output voltage of the switching power supply circuit 30 does not occur.

따라서, 절전모드 동작시 모니터에서 소모되는 전력은 '0V'에 가깝게 되므로 절전효과를 높일수 있다.Therefore, the power consumption of the monitor during the power saving mode is close to '0V' can increase the power saving effect.

그리고, 절전제어마이컴부(80)에서는 절전모드로 판단될 경우 절전모드임을 표시하기 위해 발광다이오드(LED1)에 하이신호를 출력해 상기 발광다이오드(LED1)는 발광하게 된다.In addition, the power saving control microcomputer 80 outputs a high signal to the light emitting diode LED1 to indicate that the power saving mode is determined when the power saving mode 80 determines the power saving mode, so that the light emitting diode LED1 emits light.

한편, PC(70)전원이 차단되었을 경우에는 종래 기술에서 설명한 바와같이 마이컴(60)에서 절전모드를 판단해 절전기능을 수행한다.On the other hand, when the power supply to the PC 70 is cut off, as described in the prior art, the microcomputer 60 determines the power saving mode and performs a power saving function.

상기와 같이 본 발명에서는 PC로부터 일정전압을 입력받아 절전조건을 판단하는 절전제어마이컴부를 구성하여 절전모드로 판단될 경우 전원발진부의 구동을 완전히 정지시켜 스위칭전원회로의 2차측 출력전압을 차단함으로써, 절전효과를 극대화해 제품의 신뢰성을 향상시킬 수 있는 효과가 있다.As described above, in the present invention, a power saving control microcomputer is configured to receive a predetermined voltage from a PC to determine a power saving condition, and when the power saving mode is determined, the driving of the power generator is completely stopped to cut off the secondary output voltage of the switching power supply circuit. It has the effect of improving the reliability of the product by maximizing the power saving effect.

Claims (2)

모니터 전원 절전장치에 있어서, PC로부터 일정전압을 공급받아 PC에서 출력되는 수평 및 수직동기신호의 입력상태를 감지해 모니터의 절전조건을 판단하고 판단결과 절전모드이면 전원발진부가 정지되도록 제어하는 절전제어마이컴부와, 상기 절전제어마이컴부로부터 절전제어신호가 인가되면 구동동작이 완전히 정지되어 모니터 스위칭전원회로의 2차측 출력전압을 차단시키는 전원발진부를 포함하여 구성된 것을 특징으로 하는 모니터의 전원 초전절장치.In power saving device of monitor power supply, power saving control to control power oscillator to stop when power saving mode is determined by detecting constant state of horizontal and vertical synchronous signal output from PC by receiving constant voltage from PC And a power supply oscillation unit for stopping the secondary output voltage of the monitor switching power supply circuit when the power saving control signal is applied from the power saving control microcomputer unit. . 제 1항에 있어서, 상기 절전제어마이컴부는 절전모드로 판단될 경우 절전제어신호를 광결합기를 통해 전원발진부로 인가해 절전제어를 수행하고, 절전모드 상태임을 표시하기 위한 발광다이오드를 포함하여 구성된 것을 특징으로 하는 모니터의 전원 초절전장치.The power saving control microcomputer of claim 1, wherein the power saving control microcomputer is configured to include a light emitting diode configured to apply power saving control signal to the power oscillator through the optical coupler to perform power saving control and to indicate the power saving mode. Ultra power saving device for the monitor.
KR1019980027813A 1998-07-10 1998-07-10 Super power saving device for monitor KR20000008129A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010083414A (en) * 2000-02-12 2001-09-01 김홍기 Power save function circuit in a monitor
KR20030062550A (en) * 2002-01-17 2003-07-28 삼성전자주식회사 Electrical device having stand-by mode
KR100413686B1 (en) * 2001-07-14 2003-12-31 삼성전자주식회사 Apparatus for saving power in monitor and method thereof
KR20040072874A (en) * 2003-02-11 2004-08-19 컬쳐콤. 테크놀로지(마카오) 리미티드 Energy-saving electronic device and energy-saving method for use with the same
KR100484162B1 (en) * 2002-09-13 2005-04-19 삼성전자주식회사 Low power apparatus of display device
KR100662137B1 (en) * 2005-01-14 2006-12-27 엘지전자 주식회사 Improving device and method of power dissipation at DPM

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010083414A (en) * 2000-02-12 2001-09-01 김홍기 Power save function circuit in a monitor
KR100413686B1 (en) * 2001-07-14 2003-12-31 삼성전자주식회사 Apparatus for saving power in monitor and method thereof
KR20030062550A (en) * 2002-01-17 2003-07-28 삼성전자주식회사 Electrical device having stand-by mode
KR100484162B1 (en) * 2002-09-13 2005-04-19 삼성전자주식회사 Low power apparatus of display device
KR20040072874A (en) * 2003-02-11 2004-08-19 컬쳐콤. 테크놀로지(마카오) 리미티드 Energy-saving electronic device and energy-saving method for use with the same
KR100662137B1 (en) * 2005-01-14 2006-12-27 엘지전자 주식회사 Improving device and method of power dissipation at DPM

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