CN1334552A - Power interruption protector for LCD monitor - Google Patents
Power interruption protector for LCD monitor Download PDFInfo
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- CN1334552A CN1334552A CN 00120221 CN00120221A CN1334552A CN 1334552 A CN1334552 A CN 1334552A CN 00120221 CN00120221 CN 00120221 CN 00120221 A CN00120221 A CN 00120221A CN 1334552 A CN1334552 A CN 1334552A
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Abstract
The invention relates to a protector used in LCD screen monitor preventing from power improper break. The digital image signal, control signal and power source signal are shut down in sequence by acting of detector, delay element and controlled switches, in accord with the requirements of specification put forward by manufacture of LCD screen monitor, hence a shortcoming in common technique is avoided.
Description
The present invention relates to a kind of power interruption protector, particularly a kind of power interruption protector that is used for the LCD Panel supervision.
Designing and developing of electronic product, mostly with compact be its developing goal, (Monitor) is no exception for computer monitor, the monitor of conventional cathode ray tube (Cathode-Ray Tube) formula, because volume is quite big, the power consumption situation is also undesirable, and therefore, the frivolous and LCD monitor comparatively power saving (LCD Monitor) of external form promptly becomes a gradually valued display of new generation.
Referring to Fig. 1, it is the block schematic diagram of the signal receiving end of present LCD monitor 01 (LCD Monitor) on the market, and signal kinds mainly is divided into (1) is source signal (2) digital image signal (3) control signal three classes, wherein power supply signal is as the required electric power of LCD monitor (LCD Monitor) running, and digital image signal and control signal are respectively the signal of video signal of representing the shown picture of video screen and the pattern of demonstration.Yet normal shutdown program according to LCD monitor (LCD Monitor) manufacturer's defined, computer terminal need be closed the signal of can cutting off the electricity supply after the output of digital image signal and control signal in regular turn, but under public LCD monitor (LCDMonitor) structure, when power supply sudden power or the improper shutdown of user, (1) three signals such as power supply signal (2) digital image signal (3) control signal will be cut off simultaneously, the demand that can't meet LCD monitor (LCD Monitor) manufacturer's specification, thereby cause following point to produce most probably: (a) to have dash current to produce (b) pixel and have white picture to produce the conversion tense of the inner liquid crystal of (c) liquid crystal display screen undesired, make shorten the serviceable life of LCD monitor (LCD Monitor), and how to solve the defective of above-mentioned all communal technique means, and provide actual techniques means to finish, be a fundamental purpose of the present invention.
The present invention is a kind of power interruption protector, is applied between a LCD monitor and the liquid crystal display signal generator, and the receiving end of this LCD monitor is respectively in order to receive a power supply signal; And a digital image signal one control signal that produced of this liquid crystal display signal generator, device of the present invention comprises: a detecting device, send an improper power-off signal in order to respond when an improper outage condition takes place; One first power storage element is arranged at this power supply signal and is sent on the path of this LCD monitor receiving end, discharges electric energy to this LCD monitor receiving end when interrupting in order to this power supply signal in order to storage of electrical energy; One second power storage element is arranged on the power supply feed lines of this liquid crystal display signal generator, discharges electric energy to this liquid crystal display signal generator when taking place in order to improper outage condition in order to storage of electrical energy; One the 3rd power storage element is arranged at this control signal and is sent on the path of this LCD monitor receiving end, discharges electric energy to this LCD monitor receiving end when interrupting in order to this control signal in order to storage of electrical energy; One first signal delay component is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after the very first time length; One secondary signal delay element is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after one second time span; One the 3rd signal delay component is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after one the 3rd time span; One first controlled switch, be electrically connected between this first signal delay component, this first power storage element and this LCD monitor receiving end, the triggering of this improper power-off signal that it is that response is delayed after should very first time length and switch to off state by conducting state is in order to interrupt the action of this first power storage element release electric energy to this LCD monitor receiving end; One second controlled switch, be electrically connected between this secondary signal delay element, this second power storage element and this liquid crystal display signal generator, it is the triggering of this improper power-off signal of response after delayed this second time span and switch to off state by conducting state, in order to interrupt the action of this second power storage element release electric energy to this liquid crystal display signal generator; And one the 3rd controlled switch; be electrically connected to the 3rd signal delay component; between the 3rd power storage element and this LCD monitor receiving end; it is the triggering of this improper power-off signal of response after delayed the 3rd time span and switch to off state by conducting state; discharge the action of electric energy in order to interrupt the 3rd power storage element to this LCD monitor receiving end; and the magnitude relationship of above-mentioned time span is: this very first time length＞the 3rd time span＞this second time span; automatically close this digital image signal in regular turn finishing; the work of this control signal and this power supply signal, and then reach the function of improper power-off protection.
According to above-mentioned design; this detecting device is the switch key state that detects a direct current magnitude of voltage in the power supply unit provide electrical power to this LCD monitor and this LCD monitor in the power interruption protector; transfer to when closing by unlatching when this dc voltage value is lower than an operating voltage or switch key state, all be considered as this improper outage condition and take place and send this improper power-off signal.
According to above-mentioned design, this dc voltage value is that an AC/DC power supply changeover device (Adapter) exports the dc voltage value of stream translation module (DC/DC Module) always in the power interruption protector.
According to above-mentioned design, this dc voltage value is that a battery exports the dc voltage value of stream translation module (DC/DC Module) always in the power interruption protector.
According to above-mentioned design, this first power storage element is one to be connected to this power supply signal and to be sent to a electric capacity on the path of this LCD monitor receiving end in the power interruption protector.
According to above-mentioned design, this second power storage element is one to be connected to the electric capacity on the power supply feed lines of this liquid crystal display signal generator in the power interruption protector.
According to above-mentioned design, the 3rd power storage element is one to be connected to this control signal and to be sent to a electric capacity on the path of this LCD monitor receiving end in the power interruption protector.
According to above-mentioned design; this first signal delay component, this secondary signal delay element and the 3rd signal delay component are respectively with one first series resistor R1 and one first and meet capacitor C 1, one second series resistor R2 and one second and meet capacitor C 2, one the 3rd series resistor R3 and one the 3rd and meet the RC delay circuit that capacitor C 3 is finished, wherein R1/C1＞R3/C3＞R2/C2 in the power interruption protector.
According to above-mentioned design; this first controlled switch, this second controlled switch and the 3rd controlled switch are respectively a voltage cut-out in the power interruption protector; the improper power-off signal of this that this detecting device sent is one to transfer the voltage transitions signal of low state voltage to by high state voltage; after above-mentioned three RC delay circuit delays, deliver to this first controlled switch, this second controlled switch and the 3rd controlled switch, and then these voltage cut-outs are transferred to by conducting in regular turn open circuit.
The present invention will can obtain more deep understanding by following accompanying drawing and detailed description:
Fig. 1 is the block schematic diagram of current its signal receiving end of LCD monitor (LCD Monitor) on the market.
Fig. 2 is the circuit function block schematic diagram of preferred embodiment of the present invention.
Referring to Fig. 2, it is for the block schematic diagram of preferred embodiment of the present invention, wherein when using AC-powered, detecting device 111 is to detect AC/DC power supply changeover device 10 (Adapter) to export the dc voltage value of stream translation module 11 (DC/DC Module) always to, and when using battery 12 power supplies, then detect the dc voltage value that battery 12 exports this dc conversion modules 11 (DC/DC Module) to, in addition, this detecting device 111 also detects the state of this LCD monitor switch key 13 simultaneously, when general normal operating condition, detecting device 111 output certain value high state voltage signals, this moment is in order to finish first signal delay component 14, the RC delay circuit of secondary signal delay element 15 and the 3rd signal delay component 16, wherein first and connect capacitor C 1, second and meet capacitor C 2 and the 3rd and connect capacitor C 3 and all finish charging and keep high state voltage, therefore finished with voltage cut-out and be controlled by first signal delay component 14 respectively, first controlled switch 17 of secondary signal delay element 15 and the 3rd signal delay component 16, second controlled switch 18 and the 3rd controlled switch 19 will all be kept conducting state, and the first power storage element 20 to be finished with electric capacity respectively, the second power storage element 21 and the 3rd power storage element 22 also store the needs of electric energy in order to improper outage.
And have a power failure suddenly or battery power shortage when alternating current, more or the situation of user's improper shutdown action is when taking place, detecting device 111 detected these dc voltage values will be lower than an operating voltage or switch key state and be transferred to by unlatching and closing, so will regarding it as improper outage condition, detecting device 111 takes place, and then transfer the voltage of institute's output signal to low state voltage by high state voltage and represent an improper power-off signal, while first also connects capacitor C 1, second and connect capacitor C 2 and the 3rd and connect capacitor C 3 will be simultaneously respectively via R1, R2, R3 carries out discharging action, but the first power storage element of being finished with electric capacity 20, the second power storage element 21 and 22 of short duration signal receiving end 23 and 24 power supplies of liquid crystal display signal generator of the 3rd power storage element to LCD monitor (LCD Monitor), to avoid power supply signal, digital image signal, the impact of cause of breaking simultaneously of three signals such as control signal to LCD monitor (LCD Monitor), at the same time, first signal delay component 14, in secondary signal delay element 15 and the 3rd signal delay component 16 first also connects capacitor C 1, second and meet capacitor C 2 and the 3rd and connect capacitor C 3 and begin to carry out discharging action, and when the magnitude of voltage of each electric capacity is reduced to an electronegative potential, this first controlled switch 17, second controlled switch 18 and the 3rd controlled switch 19 will be transformed into off state by conducting state, therefore only need each electric capacity, resistance value is adjusted the size order as R1/C1＞R3/C3＞R2/C2, just each capacitance discharges speed of may command, make digital image signal, control signal and power supply signal are closed in regular turn, reach the requirement of LCD monitor (LCD Monitor) manufacturer's specification, and then avoid the defective of communal technique, reach fundamental purpose of the present invention.
And device of the present invention is applicable in the system of any use LCD monitor (LCD Monitor); all belong to this system configuration or change; the all various modifications that can be undertaken by those skilled in the art can not break away from the content of claim scope institute desire protection.
Claims (9)
1. a power interruption protector is applied between a LCD monitor and the liquid crystal display signal generator, and the receiving end of this LCD monitor is respectively in order to receive a power supply signal; And a digital image signal one control signal that produced of this liquid crystal display signal generator, this device comprises:
One detecting device sends an improper power-off signal in order to respond when an improper outage condition takes place;
One first power storage element is arranged at this power supply signal and is sent on the path of this LCD monitor receiving end, discharges electric energy to this LCD monitor receiving end when interrupting in order to this power supply signal in order to storage of electrical energy;
One second power storage element is arranged on the power supply feed lines of this liquid crystal display signal generator, discharges electric energy to this liquid crystal display signal generator when taking place in order to improper outage condition in order to storage of electrical energy;
One the 3rd power storage element is arranged at this control signal and is sent on the path of this LCD monitor receiving end, discharges electric energy to this LCD monitor receiving end when interrupting in order to this control signal in order to storage of electrical energy;
One first signal delay component is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after the very first time length;
One secondary signal delay element is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after one second time span;
One the 3rd signal delay component is electrically connected on this detecting device, in order to receive this improper power-off signal and to postpone to export after one the 3rd time span;
One first controlled switch, be electrically connected between this first signal delay component, this first power storage element and this LCD monitor receiving end, the triggering of its this improper power-off signal that response is delayed after should very first time length and switch to off state by conducting state is in order to interrupt the action of this first power storage element release electric energy to this LCD monitor receiving end;
One second controlled switch, be electrically connected between this secondary signal delay element, this second power storage element and this liquid crystal display signal generator, it responds the triggering of this improper power-off signal after delayed this second time span and switches to off state by conducting state, discharges the action of electric energy to this liquid crystal display signal generator in order to interrupt this second power storage element; And
One the 3rd controlled switch; be electrically connected to the 3rd signal delay component; between the 3rd power storage element and this LCD monitor receiving end; it responds the triggering of this improper power-off signal after delayed the 3rd time span and switches to off state by conducting state; discharge the action of electric energy in order to interrupt the 3rd power storage element to this LCD monitor receiving end; and the magnitude relationship of above-mentioned time span is: this very first time length＞the 3rd time span＞this second time span; automatically close this digital image signal in regular turn finishing; the work of this control signal and this power supply signal, and then reach the function of improper power-off protection.
2. power interruption protector as claimed in claim 1; wherein this detecting device is the switch key state that detects a direct current magnitude of voltage in the power supply unit provide electrical power to this LCD monitor and this LCD monitor; transfer to when closing by unlatching when this dc voltage value is lower than an operating voltage or switch key state, all be considered as this improper outage condition and take place and send this improper power-off signal.
3. power interruption protector as claimed in claim 2, wherein this dc voltage value is that an AC/DC power supply changeover device exports the dc voltage value of stream translation module always to.
4. power interruption protector as claimed in claim 2, wherein this dc voltage value is that a battery exports the dc voltage value of stream translation module always to.
5. power interruption protector as claimed in claim 1, wherein this first power storage element is one to be connected to this power supply signal and to be sent to a electric capacity on the path of this LCD monitor receiving end.
6. power interruption protector as claimed in claim 1, wherein this second power storage element is one to be connected to the electric capacity on the power supply feed lines of this liquid crystal display signal generator.
7. power interruption protector as claimed in claim 1, wherein the 3rd power storage element is one to be connected to this control signal and to be sent to a electric capacity on the path of this LCD monitor receiving end.
8. power interruption protector as claimed in claim 1; wherein this first signal delay component, this secondary signal delay element and the 3rd signal delay component are respectively with one first series resistor R1 and one first and meet capacitor C 1, one second series resistor R2 and one second and meet capacitor C 2, one the 3rd series resistor R3 and one the 3rd and meet the RC delay circuit that capacitor C 3 is finished, wherein R1/C1＞R3/C3＞R2/C2.
9. power interruption protector as claimed in claim 8; wherein this first controlled switch, this second controlled switch and the 3rd controlled switch are respectively a voltage cut-out; the improper power-off signal of this that this detecting device sent is one to transfer the voltage transitions signal of low state voltage to by high state voltage; after above-mentioned three RC delay circuit delays, deliver to this first controlled switch, this second controlled switch and the 3rd controlled switch, and then these voltage cut-outs are transferred to by conducting in regular turn open circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120221 CN1334552A (en) | 2000-07-13 | 2000-07-13 | Power interruption protector for LCD monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00120221 CN1334552A (en) | 2000-07-13 | 2000-07-13 | Power interruption protector for LCD monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1334552A true CN1334552A (en) | 2002-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00120221 Pending CN1334552A (en) | 2000-07-13 | 2000-07-13 | Power interruption protector for LCD monitor |
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| CN (1) | CN1334552A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380183C (en) * | 2002-07-12 | 2008-04-09 | 索尼公司 | Liquid crystal display equipment, method for controlling the same equipment and portable terminal |
| CN101308630B (en) * | 2007-05-18 | 2011-12-14 | 群康科技(深圳)有限公司 | LCD device |
| CN101217026B (en) * | 2007-01-06 | 2012-03-28 | 三星电子株式会社 | Liquid crystal display and method for eliminating afterimage thereof |
| CN106097998A (en) * | 2016-06-15 | 2016-11-09 | 苏州众显电子科技有限公司 | A kind of power interruption protector for LCD monitor |
| CN106597204A (en) * | 2017-01-20 | 2017-04-26 | 合肥市传秀声光科技有限公司 | Big screen with power supply monitoring function |
| CN106647533A (en) * | 2017-01-20 | 2017-05-10 | 合肥市传秀声光科技有限公司 | Intelligent big screen system |
| CN109584817A (en) * | 2018-11-16 | 2019-04-05 | 深圳市鑫洪泰电子科技有限公司 | The LCD liquid crystal display die set of display is kept after a kind of power down |
| CN110599969A (en) * | 2018-06-12 | 2019-12-20 | 夏普株式会社 | Power supply circuit and display device |
-
2000
- 2000-07-13 CN CN 00120221 patent/CN1334552A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100380183C (en) * | 2002-07-12 | 2008-04-09 | 索尼公司 | Liquid crystal display equipment, method for controlling the same equipment and portable terminal |
| CN101217026B (en) * | 2007-01-06 | 2012-03-28 | 三星电子株式会社 | Liquid crystal display and method for eliminating afterimage thereof |
| CN101308630B (en) * | 2007-05-18 | 2011-12-14 | 群康科技(深圳)有限公司 | LCD device |
| CN106097998A (en) * | 2016-06-15 | 2016-11-09 | 苏州众显电子科技有限公司 | A kind of power interruption protector for LCD monitor |
| CN106597204A (en) * | 2017-01-20 | 2017-04-26 | 合肥市传秀声光科技有限公司 | Big screen with power supply monitoring function |
| CN106647533A (en) * | 2017-01-20 | 2017-05-10 | 合肥市传秀声光科技有限公司 | Intelligent big screen system |
| CN106647533B (en) * | 2017-01-20 | 2019-02-22 | 合肥市传秀科技有限公司 | A kind of intelligence large screen system |
| CN110599969A (en) * | 2018-06-12 | 2019-12-20 | 夏普株式会社 | Power supply circuit and display device |
| CN110599969B (en) * | 2018-06-12 | 2021-09-10 | 夏普株式会社 | Display device |
| CN109584817A (en) * | 2018-11-16 | 2019-04-05 | 深圳市鑫洪泰电子科技有限公司 | The LCD liquid crystal display die set of display is kept after a kind of power down |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |