KR20110081019A - Monitor with structure of standby power cut-off - Google Patents

Monitor with structure of standby power cut-off Download PDF

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Publication number
KR20110081019A
KR20110081019A KR1020100057152A KR20100057152A KR20110081019A KR 20110081019 A KR20110081019 A KR 20110081019A KR 1020100057152 A KR1020100057152 A KR 1020100057152A KR 20100057152 A KR20100057152 A KR 20100057152A KR 20110081019 A KR20110081019 A KR 20110081019A
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KR
South Korea
Prior art keywords
power
switching
unit
output
signal
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Application number
KR1020100057152A
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Korean (ko)
Inventor
김영범
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김영범
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Publication of KR20110081019A publication Critical patent/KR20110081019A/en

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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
    • G06F1/266—Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
    • 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
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3265—Power saving in display device

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE: A monitor having a standby power block structure is provided to make zero power wasted in a power saving mode and standby power wasted in power-off to reduce the waste of power. CONSTITUTION: A power unit(37) provides an operation power source to each function unit. According to a switching drive signal, a switching unit(36) secludes or conducts the power supply path of an input power source. A sensing and driving unit(40) offers horizontal/vertical sync signals to a control unit(39). The control unit controls a control signal for supplying an external input power source to the sensing and driving unit if the sync signal is detected.

Description

 MONITOR WITH STRUCTURE OF STANDBY POWER CUT-OFF}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor, which is an image display device connected to a computer. More particularly, the present invention relates to a monitor having a structure for cutting off unnecessary power consumption and standby power when the computer is turned off or in a power saving mode. .

In general, a monitor turns off the screen itself to reduce power consumption when the connected computer goes to sleep mode or the computer is turned off. However, even in this state, the monitor continues to consume standby power. At this time, the power consumption varies depending on the product, but when the power saving mode is usually about 5W, standby power is about 2.5W when the power 'off'.

As such, while the computer is turned on, power is wasted in the sleep mode while doing other work, and power is unnecessarily wasted in standby power when the computer is 'off'.

 SUMMARY OF THE INVENTION The present invention has been made to improve the above-described problems in the related art, and provides an apparatus for completely blocking power and standby power wasted in the display device when the computer enters a power saving mode or a power 'off' state.

In order to achieve the above object, the present invention is connected to the computer main body, the monitor having a standby power blocking function, the power supply unit for receiving the external input power to provide the operating power of the respective functional units; A switching unit for blocking or conducting a power supply path of the input power provided to the power supply unit according to a switching driving signal; A sensing and driving unit for providing a horizontal / vertical synchronization signal provided from the computer main body to a control unit and providing the switching driving signal to the switching unit under control of the control unit; If the synchronization signal is not detected by detecting the presence of the horizontal / vertical synchronization signal, a control signal for cutting off the external input power is provided to the sensing and driving unit. When the synchronization signal is detected, the controller supplies the external input power. And a control unit for providing a control signal to the sensing and driving unit.

Preferably, the switching unit is composed of a latching relay structure; The sensing and driving unit receives power supplied from the computer main body as an input, and an output of the first switching element connected to a first end of a coil of the switching unit configured of the latching relay; A second switching element which receives power supplied from the computer main body as an input and whose output is connected to a second end of a coil of the switching unit configured of the latching relay; A third switching element having an input connected to the first end of the coil and an output connected to the ground end; An input is connected to a second end of the coil and includes a fourth switching element connected to an output ground end; The second and third switching devices commonly receive a switching control signal output from the first output of the controller, and the first and fourth switching devices commonly share the switching control signal output from the second output of the controller. Provided with; The controller is operatively implemented by receiving power from the computer main body, and selectively outputs a switching control signal to the first or second output depending on whether the horizontal / vertical synchronization signal is detected.

Preferably, the power supplied from the power supply unit to the control unit is provided through a first diode, and a second diode is installed in the power supply path provided from the computer main body.

Preferably, the presence or absence of the horizontal / vertical synchronization signal is detected by the controller by determining whether the horizontal / vertical synchronization signal is input for a preset time.

As described above, the present invention has a structure in which the computer controls the sensing and driving unit to block the switching unit so that the horizontal / vertical synchronization signal is not output when the power saving mode or the power is off, thereby consuming power and power off in the power saving mode. 'It has the effect of reducing the waste of power by zeroing the standby power that is wasted at time without unplugging it.

1 is an overall block diagram of a monitor having a standby power blocking function and a computer main body connected thereto according to an embodiment of the present invention.
FIG. 2 is a detailed circuit diagram illustrating a main part of the monitor in FIG. 1; FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, specific matters such as latching relays, bridges, microcomputers, and the like are shown, which are merely provided to help a more general understanding of the present invention. It will be apparent to those skilled in the art that certain modifications or changes can be made to these specific details within the scope of the present invention.

1 is a block diagram of a monitor having a standby power blocking function and a computer connected thereto according to an embodiment of the present invention. Referring to FIG. 1, the basic structure of the computer main body 10 will be described first, and the computer main body 10 includes a central processing unit (CPU) 16, red R, green G, and blue B image signals, and horizontal / vertical. A graphics controller 11 for outputting the synchronization signal H / V SYNC and the monitor setting signal DDC-C1 to the monitor 30, and an input device 50 such as a keyboard, An I / O controller 13 for processing input signals, a hard disk drive (HDD) 12 for storing a system operating system or a plurality of application programs based thereon, and a system bus 15 for interconnecting them Include.

In the monitor 30 according to the embodiment of the present invention connected to the computer main body 10 having such a configuration, a red R, green G, and blue B video signal input from the graphic controller 11 of the computer main body 10. And a horizontal / vertical synchronizing signal (H / V SYNC) and a monitor setting signal (DDC-C1) are input to receive signals related to image output from the computer main body 10 and provide them to internal functional units. Section 35; An A / D converter 34 for converting a red R, green G, blue B, video signal and a horizontal / vertical synchronization signal (H / V SYNC) input through the interface unit 35 into a digital signal; Panel driver by adjusting red R, green G, blue B, video signal and horizontal / vertical sync signal (H / V SYNC) converted to digital signal from A / D converter 34 according to the installed LCD panel 33 A scaler 31 provided to 32; A panel driver 32 which operates the LCD panel 33 in accordance with a signal provided from the scaler 31; An LCD panel 33 for outputting an image according to the driving of the panel driver 32; A backlight 38 for generating backlight light of the LCD panel 33; A microcomputer 39 (ie, a control unit) for controlling overall operations of the functional units; A power supply unit 37 is provided to receive an external input power source (power source AC / DC) to provide operating power for the respective functional units.

In the monitor 30 having such a configuration, the power supply provided to the power supply 37 according to the features of the present invention has a structure provided through the switching unit 36, the switching unit 36 is a sensing & driving unit The power supply path provided to the power supply unit is blocked or conducted according to the switching drive signal provided from 40.

The sensing and driving unit 40 provides a horizontal / vertical synchronization signal (H / V SYNC) before and after the interface unit 35 to the microcomputer 39, and under the control of the microcomputer 39, the switching unit 36. Outputs a switching drive signal.

The microcomputer 39 detects the presence or absence of a horizontal / vertical synchronization signal (H / V SYNC), and if there is no signal, the sensing and driving unit 40 controls a control signal for cutting off the input power (power AC / DC) of the monitor 30. And a control signal for supplying the input power (power AC / DC) of the monitor 30 to the sensing & driving unit 40 when the horizontal / vertical synchronization signal (H / V SYNC) is present. Has

FIG. 2 is a detailed circuit configuration diagram of the main part of the monitor in FIG. 1, and in particular, shows a detailed circuit configuration of the switching unit 36 and the sensing & driving unit 40. Referring to FIG. 2, the switching unit 36 has a latching relay structure, and the sensing and driving unit 40 includes first to fourth switching elements (eg, npn-type switching transistor Q1) that perform switching by a switching control signal. , Q2, Q3, and Q4).

The first and second switching elements (transistors) Q1 and Q2 of the sensing and driving unit 40 are each commonly provided with an input (for example, a collector stage) of power 5V provided from the computer main body 10. The output (e.g., emitter end) of the switching element Q1 is connected to the first end R of the coil of the switching unit 36 configured as the latching relay, and the output (emitter end) of the second switching element Q2 is the coil. It has a structure connected to the second end (S) of. In addition, the input (collector stage) of the third switching element Q3 is connected to the first stage R of the coil, the output (emitter stage) is connected to the ground terminal, and the input (collector stage) of the fourth switching element Q4 is It is connected to the second stage S of the coil, and the output (emitter stage) has a structure connected to the ground terminal.

In this case, the second and third switching elements Q2 and Q3 are commonly provided with a switching control signal output from the first output O1 of the microcomputer 39 (through the base end), and the first and fourth switching elements Q4 are The switching control signal output from the second output O2 of the microcomputer 39 is commonly provided (via the base end).

The microcomputer 39 is implemented to be operated by receiving a power supply of + 5V provided from the computer main body 10, and transmits the horizontal / vertical synchronization signal (H / V SYNC) signal to the first input I1 and the second input I2, respectively. The switching control signal is selectively output to the first output O1 or the second output O2 depending on whether the detection is provided.

Referring to FIG. 2, the operation according to the present invention will be described in detail. When the input signal is not input to the computer main body 10 from the input device 50 for a long time, it is determined that it is not used and is switched to the power saving mode. At this time, one of the horizontal and vertical synchronizing signals (H / V SYNC) is not sent from the graphic controller 11 so that the signal is not transmitted to the monitor. Accordingly, if there is no signal for a predetermined time T (for example, set to about 5 to 10 seconds) set in the inputs I1 and I2 of the microcomputer 39 of the present invention, the microcomputer 39 is regarded as a power saving mode and the A high pulse is output to the first output O1. Accordingly, the second and third switching elements Q2 and Q3 of the bridge circuit of the sensing and driving unit 40 are turned 'on' so that a current flows from the coil S of the switching unit 36 configured as the latching relay to R, and the latching relay Contact C1, C2 and contact C3, C4 of are separated and cut off supply of input power AC / DC. Accordingly, power is not supplied to the power supply unit 37, so that power consumed by the monitor is completely cut off.

In addition, when the mouse or keyboard of the input device 40 is moved or input in the power saving mode, the computer main body 10 returns to the normal mode, and the horizontal / vertical synchronizing signal (H / V SYNC) is normally monitored from the graphic controller 11. 30), the + 5V power input from the graphics controller 11 is supplied to the microcomputer 39 and the sensing and driving unit 40, so the microcomputer 39 supplies the horizontal / vertical synchronization signal (H / V SYNC). It senses and outputs a 'high' pulse to the second output O2. As a result, the first and fourth switching elements Q1 and Q4 of the bridge are turned on so that current flows from the coils R to S of the switching unit 36 constituted by the latching relay, so that the contacts C1, C2 and the contacts C3, C4. Is connected, the input power source AC / DC is supplied to the power supply unit 37, and the monitor operates normally.

On the other hand, when the computer main body 10 is powered off, the horizontal / vertical synchronization signal (H / V SYNC) is not output from the graphic controller 11, so the microcomputer 39 operates in the power saving mode, and thus the first output O1. A high pulse is output to the second and third switching elements Q2 and Q3 of the sensing and driving unit 40 to turn on so that a current flows from the coil S of the switching unit 36 configured as a latching relay to R, where the contacts C1, Since C2 and contacts C3 and C4 fall, the supply of input power AC / DC is cut off.

When the power of the computer main body 10 is turned on again, the horizontal / vertical synchronizing signal (H / V SYNC) is normally transmitted from the graphic controller 11 to the monitor 30 and inputted from the graphic controller 11. Since the power is being supplied to the microcomputer 39 and the bridge circuit by + 5V, the microcomputer 39 wakes up, and the microcomputer 39 detects a horizontal / vertical synchronization signal (H / V SYNC) and applies a 'high' pulse to the second output O2. Output Accordingly, the first and fourth switching elements Q1 and Q4 are turned on so that a current flows from the coil R to S of the switching unit 36 having the latching relay, so that the contacts C1, C2 and the contacts C3, C4 are connected. The power supply AC / DC is supplied to the power supply 37 so that the monitor 30 operates normally.

In this case, the power supply 37 of the monitor 30 is configured to supply the VCC to the microcomputer 39 through the first diode D1, thereby preventing the monitor 30 from being discharged to the power supply 37 when the power of the monitor 30 is cut off. The second diode D2 installed in the 5V power supply path provided from the computer main body 10 prevents the monitor power from being discharged to the computer main body 10 when the computer main body 10 is 'off'.

As described above, according to an embodiment of the present invention, the configuration and operation of the monitor having a power cut-off device configured to automatically cut off the power to eliminate the power consumption of the monitor when the computer is in a power saving mode or when the power is 'off' can be made. Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Accordingly, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by equivalents of the claims and the claims.

Claims (4)

In the monitor connected to the computer main body, the standby power off function,
A power supply unit which receives external input power and provides operation power of each of the internal functional units;
A switching unit for blocking or conducting a power supply path of the input power provided to the power supply unit according to a switching driving signal;
A sensing and driving unit for providing a horizontal / vertical synchronization signal provided from the computer main body to a control unit and providing the switching driving signal to the switching unit under control of the control unit;
If the synchronization signal is not detected by detecting the presence or absence of the horizontal / vertical synchronization signal, a control signal for cutting off the external input power is provided to the sensing and driving unit, and when the synchronization signal is detected, control to supply the external input power. And a control unit for providing a signal to the sensing and driving unit.
The method of claim 1, wherein the switching unit has a latching relay structure,
The sensing and driving unit receives power provided from the computer main body as an input, and an output is a first switching element connected to a first end of a coil of the switching unit configured as the latching relay;
A second switching element which receives a power supplied from the computer main body as an input and an output thereof is connected to a second end of a coil of the switching unit configured of the latching relay;
An input is connected to the first end of the coil), and an output is connected to a third switching element connected to the ground end;
An input is connected to a second end of the coil and includes a fourth switching element connected to an output ground terminal,
The second and third switching devices commonly receive a switching control signal output from the first output of the controller, and the first and fourth switching devices commonly share the switching control signal output from the second output of the controller. Provided by
The control unit may be implemented to be operated by receiving power provided from the computer main body, and selectively output a switching control signal to the first output or the second output depending on whether the horizontal / vertical synchronization signal is detected. Monitor.
The monitor of claim 2, wherein the power provided from the power supply unit to the control unit is provided through a first diode, and a second diode is installed in a power supply path provided from the computer main body.
The monitor of claim 1, wherein the detecting of the presence of the horizontal / vertical synchronization signal by the controller is performed by determining whether to input the horizontal / vertical synchronization signal for a preset time.
KR1020100057152A 2010-01-07 2010-06-16 Monitor with structure of standby power cut-off KR20110081019A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20100001149 2010-01-07
KR1020100001149 2010-01-07

Publications (1)

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KR20110081019A true KR20110081019A (en) 2011-07-13

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KR1020100057152A KR20110081019A (en) 2010-01-07 2010-06-16 Monitor with structure of standby power cut-off

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