CN104090645A - Power supply control system of display and control method thereof - Google Patents
Power supply control system of display and control method thereof Download PDFInfo
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- CN104090645A CN104090645A CN201310237633.XA CN201310237633A CN104090645A CN 104090645 A CN104090645 A CN 104090645A CN 201310237633 A CN201310237633 A CN 201310237633A CN 104090645 A CN104090645 A CN 104090645A
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- display
- video interface
- circuit
- control system
- power
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Abstract
The invention relates to a power supply control system of a display. The power supply control system comprises a host computer and a display module. The power supply control system is characterized in that the host computer is provided with a first video interface, and the host computer can provide a working voltage through the first video interface; the display comprises a second video interface, a control circuit and a power circuit, wherein the first video interface and the second video interface are connected through a transmission line, the control circuit can receive the working voltage through the second video interface, and the control circuit further provides a voltage signal to the power circuit according to the working voltage to control switching-on and switching-off of the power circuit. Thus, switching-on or switching-off of power supply of the display and the host computer can be controlled at the same time, so that the convenience for use is promoted, and meanwhile an effect of energy saving is achieved. The invention further provides a control method of the power supply control system of the display.
Description
Technical field
The present invention relates to a kind of switching system, particularly relate to display power control system and the control method thereof of a kind of main frame and displays separated.
Background technology
Press, science and technology is constantly maked rapid progress, and personal computer is universalness more and more also, and desktop computer is because having the first-selection that becomes most consumers compared with high cost performance.Inferior pressing, liquid crystal display is because having the advantages such as low diathermaneity, low power consumption and slimming, day by day extensive on using, and along with correlation technique reaches its maturity and innovates, its kind is day by day various.
Liquid crystal display generally comprises a control panel (Control Board) and a LCD MODULE (Liquid Crystal Display Module, LCM), wherein LCD MODULE comprises that plural display unit is to realize the demonstration of image, control panel comprises a power circuit, can be used for receiving extraneous power source voltage Vcc, and this power source voltage Vcc is transformed into the required various voltages of LCD MODULE.
Conventionally the power supply of display and main frame need be controlled by power switch separately conventionally, only, display is generally furnished on a working face (as desktop), main frame is furnished side under this working face as, when computer booting, liquid crystal display can't light automatically, causes user's inconvenience; Although can control the power switch of display, continue to open to solve above-mentioned inconvenience, this kind of mode will cause energy dissipation.
Summary of the invention
The present invention's fundamental purpose, is to provide a kind of display power control system and the control method thereof that can simultaneously control the on/off of display and main frame.
The embodiment one of according to the present invention, described display power control system comprises a main frame and a display apparatus module, improvement part of the present invention is, this main frame has one first video interface, and this main frame can see through this first video interface one operating voltage is provided, this display includes one second video interface, one control circuit and a power circuit, wherein this first video interface is connected via a transmission line with this second video interface, this control circuit can see through this second video interface and receive this operating voltage, this control circuit further provides a voltage signal to this power circuit according to this operating voltage, to control the break-make of this power circuit.
Another embodiment according to the present invention, described display power control system comprises the following steps;
The present invention has following beneficial effect: the present invention's display power control system is by the circuit design that changes display, user only need touch the power supply that power switch on main frame can be opened main frame and display simultaneously, person's operation easy to use, and reach energy-conservation effect simultaneously.
For the present invention's above-mentioned and other object, feature, advantage can be become apparent, below will be especially exemplified by preferred embodiment of the present invention, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Fig. 1 is the calcspar of the present invention's display power control system;
Fig. 2 is the circuit diagram of the present invention's control circuit;
Fig. 3 is the constitutional diagram of the present invention's display power control system; And
Fig. 4 is the control flow chart of the present invention's display power control system.
primary clustering symbol description
100 display power control systems
1 main frame
10 first video clip
2 displays
20 second video clip
21 control circuits
211 on-off circuits
212 logic locks
2121 base stages
2122 collectors
2123 emitter-base bandgap gradings
213 first input ends
214 second input ends
215 output terminals
216 resistance
22 power circuits
3 transmission lines
Embodiment
The present invention's [display power control system] sees through video interface to reach when main frame switching on and shutting down, and display is being followed automatic switch, below will introduce in detail the present invention's embodiment.
Please refer to Fig. 1, is the calcspar of display power control system of the present invention.The display power control system 100 of the present embodiment comprises a main frame 1 and a display 2.
Particularly, main frame 1 is provided with one first video interface 10, is provided with one second video interface 20 on display 2, and between the first video interface 10 and the second video interface 20, mat one transmission line 3 is connected, and makes main frame 1 and display 2 reach electrically connect.In the present embodiment, the first video interface 10 and the second video interface 20 are respectively HDMI (High Definition Multimedia Interface) (HDMI), transmission line is HDMI (High Definition Multimedia Interface) transmission line (HDMI transmission line), so, when the electric power starting of main frame 1, main frame 1 can be via transmission line 3 to display 2 transmitting image signals and output one operating voltage, as+5V.
Display 2 includes a control circuit 21 and a power circuit 22, and wherein power circuit 22 can provide display 2 required various positive voltages and negative voltage; Control circuit 21 can see through the second video interface 20 and receive this operating voltage, and further according to this operating voltage, provides a voltage signal to power circuit 22, to control the break-make of power circuit 22.
Please refer to Fig. 2, be the circuit diagram of control circuit of the present invention, and please coordinate with reference to figure 3.Control circuit 21 comprises an on-off circuit 211, a logic lock 212, a first input end 213, one second input end 214 and an output terminal 215.Particularly, on-off circuit 211 is connected with a power end, with selectivity, inputs an extraneous supply voltage, as+5V; First input end 213 connects the second video interface 20, can be used for receiving this operating voltage by main frame 1 input, and the second input end 214 connecting valve circuit 211 can be used for receiving this external world's supply voltage by power end input; Logic lock 212 is connected with first input end 213, the second input end 214 and output terminal 215 respectively, can compare this operating voltage or this external world's supply voltage, and control signal via output terminal 215 outputs one.
In more detail, when logic lock 212 detects the operating voltage via the second video interface 20 inputs (detecting+5V), from output terminal 215, to power circuit 22, send a high levle voltage signal, to control power circuit 22 conductings, make display 2 follow main frame 1 start and automatically light (as shown in Figure 3 from state S02, switch to state S01); If after main frame 1 shutdown, logic lock 212 does not send a low level voltage signal because detecting operating voltage (not detecting+5V) to power circuit 22, to control power circuit 22, disconnect, make display 2 follow main frame 1 shutdown and automatically close (as shown in Figure 3 from state S01, switch to state S02); So, user can be by the power switch on main frame 1 to open the power supply of main frame 1 and display simultaneously, person's operation easy to use.
What need mention is, on-off circuit 211 is the switching function of script display 2, even if main frame 1 is in off-mode, outside logic lock 212 detects via the second input end 214 input during boundary's supply voltage (detecting equally+5V), still can to power circuit 22, send a high levle voltage signal from output terminal 215, so that display 2 is opened.
For reaching above-mentioned object; the logic lock 212 of the present embodiment may be selected to be bipolar transistor; it has a base stage 2121, a collector 2122 and an emitter-base bandgap grading 2123; wherein collector 2122 is connected with first input end 213; emitter-base bandgap grading 2123 is connected with the second input end 214 and passes through resistance 216 ground connection; with protection logic lock 212 and on-off circuit 211, base stage 2121 is connected with output terminal 215.Be understandable that, the present invention is non-as limit, such as can reach assembly such as totalizer (adder) or the door (OR gate) etc. of identical object, also can replace bipolar transistor and is arranged at the present invention's control circuit 21 inside.
Please refer to Fig. 4, is the control flow chart of display power control system of the present invention.First as shown in square S1, provide a display power control system 100, wherein main frame 1 is connected through HDMI (High Definition Multimedia Interface) with display 2; Then as shown in square S2, utilize 212 detectings of logic lock by one of the second video interface 20 inputs operating voltage (i.e. detecting+5V); If logic lock 212 detects this operating voltage and carries out square S3, logic lock 212, to power circuit 22 output one high levle voltage signals, makes display 2 follow main frame 1 start and automatically open.
If logic lock 212 does not detect this operating voltage and carries out square S4, logic lock 212 is exported low level voltage signals to power circuit 22,, make display 2 follow main frame 1 shutdown and automatically close (as shown in square S5); Or, if detecting this operating voltage, logic lock 212 also can not carry out square S6, mat on-off circuit 211 input one extraneous supply voltages, and logic lock 212 detects this external world's supply voltage (detecting equally+5V) and to power circuit 22 output one high levle voltage signals, display 2 is opened.
In sum, compared to the traditional monitor switching system separated with main frame, the present invention's display power control system is by the circuit design that changes display, user only need touch the power supply that power switch on main frame can be opened main frame and display simultaneously, person's operation easy to use, and reach energy-conservation effect simultaneously.
Though the present invention discloses in preferred embodiment mode; so it is not intended to limiting the invention, anyly has the knack of this skill personage, without departing from the spirit and scope of the invention; when doing various changes and modification, thus the present invention's protection domain when depending on after the attached claim person of defining be as the criterion.
Claims (8)
1. a display power control system, is characterized in that, comprising:
One main frame, has one first video interface, and this main frame can see through this first video interface one operating voltage is provided; And
One display apparatus module, include one second video interface, a control circuit and a power circuit, wherein, this first video interface is connected via a transmission line with this second video interface, this control circuit can see through this second video interface and receive this operating voltage, this control circuit further provides a voltage signal to this power circuit according to this operating voltage, to control the break-make of this power circuit.
2. display power control system as claimed in claim 1, it is characterized in that, more comprise an on-off circuit, be connected with a power end, with selectivity, input an extraneous supply voltage, this control circuit comprises a logic lock, one first input end, one second input end and an output terminal, this first input end connects this second video interface, be used for receiving this supply voltage, this second input end connects this on-off circuit, be used for receiving this external world's supply voltage, this logic lock compares this operating voltage or this external world's supply voltage, and control signal via this output terminal output one.
3. display power control system as claimed in claim 2, is characterized in that, this logic lock is a totalizer.
4. display power control system as claimed in claim 2, is characterized in that, this logic lock be one or door.
5. display power control system as claimed in claim 2, it is characterized in that, this logic lock is a bipolar transistor, there is a base stage, a collector and an emitter-base bandgap grading, the collector of this bipolar transistor is connected with this first input end, the emitter-base bandgap grading of this bipolar transistor is connected with this second input end, and the base stage of this bipolar transistor is connected with this output terminal.
6. display power control system as claimed in claim 1, is characterized in that, this first video interface and this second video interface are HDMI (High Definition Multimedia Interface), and this transmission line is HDMI (High Definition Multimedia Interface) transmission line.
7. a control program for display power control system, is characterized in that, comprises the following steps:
One main frame and a display are provided, and described main frame is connected with the saturating video interface of described display, and wherein said display includes one of tool one logic lock control circuit and a power circuit;
Utilize this logic lock detecting by one of video interface input operating voltage;
If this logic lock detects this operating voltage, this logic lock exports a high levle voltage signal to this power circuit, and display is opened automatically; And
If this logic lock does not detect this operating voltage, this logic lock exports a low level voltage signal to this power circuit, and display is closed automatically.
8. the control program of power control system as claimed in claim 7, it is characterized in that, more comprise that step inputs an extraneous supply voltage through this on-off circuit, and this logic lock detects this external world's supply voltage and export a high levle voltage signal to this power circuit, this display is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237633.XA CN104090645A (en) | 2013-06-17 | 2013-06-17 | Power supply control system of display and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310237633.XA CN104090645A (en) | 2013-06-17 | 2013-06-17 | Power supply control system of display and control method thereof |
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| Publication Number | Publication Date |
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| CN104090645A true CN104090645A (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310237633.XA Pending CN104090645A (en) | 2013-06-17 | 2013-06-17 | Power supply control system of display and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182426Y (en) * | 1994-05-26 | 1994-11-09 | 周焱 | Electricity-saving device for computer |
| US6147682A (en) * | 1996-05-07 | 2000-11-14 | Samsung Electronics, Ltd. | Monitor for use with computer system and method of controlling supply of power to computer peripherals connected with the monitor |
| CN1466120A (en) * | 2002-07-02 | 2004-01-07 | 明基电通股份有限公司 | Power source managemnt system for LCD |
| CN101615070A (en) * | 2008-06-25 | 2009-12-30 | 联想(北京)有限公司 | A kind of output unit and control method thereof |
| CN102147650A (en) * | 2010-02-09 | 2011-08-10 | 巴比禄股份有限公司 | Peripheral device and method of operating the same |
-
2013
- 2013-06-17 CN CN201310237633.XA patent/CN104090645A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2182426Y (en) * | 1994-05-26 | 1994-11-09 | 周焱 | Electricity-saving device for computer |
| US6147682A (en) * | 1996-05-07 | 2000-11-14 | Samsung Electronics, Ltd. | Monitor for use with computer system and method of controlling supply of power to computer peripherals connected with the monitor |
| CN1466120A (en) * | 2002-07-02 | 2004-01-07 | 明基电通股份有限公司 | Power source managemnt system for LCD |
| CN101615070A (en) * | 2008-06-25 | 2009-12-30 | 联想(北京)有限公司 | A kind of output unit and control method thereof |
| CN102147650A (en) * | 2010-02-09 | 2011-08-10 | 巴比禄股份有限公司 | Peripheral device and method of operating the same |
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Application publication date: 20141008 |