TW413750B - Uninterrupted Power Supply device applied to LCD monitor - Google Patents

Abstract

The invention relates to an Uninterrupted Power Supply device applied to LCD monitor, which primarily utilizes the activation of a detector, a signal delay component and control switch to sequentially shut down the digital image signal, control signal and power signal to comply with the requirements specified by the LCD monitor manufacturers and further get rid of the drawback of conventional technique.

Description

413750 V. Description of the invention (1) Field of the invention This case is an improper power-off protection device, especially an improper power-off protection device applied to a liquid crystal display screen monitor. BACKGROUND OF THE INVENTION The design and development of electronic products are mostly light, thin and short, and computer monitors (Mon it or) are no exception. Traditional cathode-ray tube (Cathode-Ray Tube) monitors are quite large. The power consumption status is also ideal. Therefore, the LCD monitor, which is thin and light and has a relatively low power consumption, has become a new generation of display that has been paid more and more attention to. Please refer to the first figure, which is a block diagram of the signal receiving end of the LCD monitor 01 on the market today, and the signal types are mainly divided into (1) power signals (2) digital image signals (3 ) Control signal type II, where the power supply signal is used as the power required for the LCD monitor operation, and the digital image signal and control signal are the image information and display of the screen displayed on the screen, respectively. Of the model. However, according to the normal shutdown procedure prescribed by the LCD monitor manufacturer, the computer terminal must turn off the digital image signal and control signal input in order before it can cut off the power signal, but in the conventional LCD display Under the structure of LCD monitor, when the power is suddenly cut off or the user shuts down improperly, (1) the power signal (2) the digital image signal (3) control

41875ο V. Description of the invention (2) Signal The signal will be cut at the same time, which cannot meet the requirements of the manufacturer of LCD monitor (LCD MOnitor), so it is likely to cause the following problems. Ka) Inrush current (BH pixels will have a white screen (c) f, the transition time of the liquid crystal inside the display screen is abnormal, which makes the life of the LCD M0ni tor shorter, and how to solve the above The lack of various conventional technical means, and providing a practical technical means to achieve 'is one of the main objectives of the development of this case. SUMMARY OF THE INVENTION This case is the crystal display of the screen monitor type monitor. This device contains an improper source The signal is transmitted to store the electric energy. The screen display monitors the crystal display for signals to prepare for improper circuit breakers. The first LCD screen is not displayed. The control signal is an improper disconnection from a liquid crystal display receiving end. A receiving device, a power supply signal is displayed on a liquid crystal display screen between an application device, and a digital image signal and a control signal generated by the liquid generator. The pick-up device is used to respond to an improper power-off signal; to the liquid crystal display for the power receiver receiving end; the generator's electrical status is released when a three-electricity storage monitor is disconnected, and a first electrical energy-display-type monitoring signal is released. When the power is off, a second electrical energy supply path is released. When the electrical component is released, set the _ end of the path to the storage element. The receiving end releases the electrical storage element, which can reach the liquid on the control. When used to display the electrical condition of the liquid crystal, it is set on the path of the electricity, using the energy to the liquid crystal display, and the liquid is used to store the power. The crystal display signal is generated and transmitted to the stored power for the screen-type monitor. 〇

5. Description of the Invention (3) Creeping, a first signal delay element, electrically connected to the detector, which is used to receive the improper power-off signal and output after a delay of a first time length; a first A signal delay element is electrically connected to the detector, and is used to receive the signal when the signal is turned off and delayed for a second period of time; a third signal is delayed and is electrically connected to the detector. , Which is used to receive the improper power failure and delay output for a third time; a first controlled switch is electrically connected to the first signal delay element, the first electric energy storage element, and the crystal display Between the receiving end of the curtain monitor, it is switched from the on-state to the state of the road in response to the triggering of the improper power-off signal after delaying the first interval, so as to release the electric energy from the first electric energy storage element. To the liquid: the action of the receiving end of the display screen monitor; a second controlled switch 'electrical connection = the second signal delay element #, [the energy-saving element and the liquid: between the number generator, the Due to the improper delay after the second time delay The signal is triggered to switch from the on-state to the off-state and the second = interrupts the action of the second electric energy storage element to release electric energy to the liquid crystal display ^ number generator; and a third controlled switch is electrically connected to the first element, three Between the electric energy storage element and the LCD screen end, it is switched from the on state to the open circuit due to the delay of the “unprepared power failure” number after the third period of time is delayed:: 3: :: 1 three electric energy storage The component releases electric energy to the LCD display screen II: Action 'and the relationship between the above time lengths is: the first time length> the third time length> the second time length, == turn off the digital video signal, the The control signal and the work of the Er'ao No. 'further achieve the function of improper power failure protection.

C: \ Program Fi1es \ Patent \ pdl544. Ptd page 6 ^ 13750 Five 'invention description (4) According to the above concept, the detector in the improper power failure protection device detects the power supply to the LCD screen monitor The DC voltage value of one of the power supplies and the state of the switch buttons of the LCD screen monitor are considered to be the same when the DC voltage value is lower than an operating voltage or the state of the switch button is turned from on to off.畲 The improper power off signal is generated when a power outage occurs. According to the above concept, the DC voltage value in the infrequent power failure protection device is the DC power value output from an AC / DC power converter (Adapter) to a DC / DC Module. According to the above concept, the DC voltage value in the improper power failure protection device is a DC voltage value output from a battery to a DC / DC Module. According to the above-mentioned concept, the first power storage element in the improper power-off protection device is a capacitor connected in parallel to the path where the power signal is transmitted to the receiving end of the liquid crystal display screen monitor. According to the above concept, the second power storage device in the improper power failure protection device is a capacitor connected in parallel to the power supply path of the liquid crystal display signal generator. According to the above-mentioned concept, the third electric energy storage element in the improper power-off protection device is a capacitor connected in parallel with the control signal and transmitted to the receiving end of the liquid crystal display screen monitor. According to the above-mentioned concept, the first signal delay element, the second signal delay element and the third signal delay element in the improper power-off protection device are respectively connected by a first series resistor r 1 and a first parallel capacitor C1. One second

C: \ ProgramFiIes \ Patent \ pdl544.ptd Page 7 • ^ ----- 413750 V. Description of the invention (5) Series resistor R2 and a second parallel capacitor C2, a third series resistor R3 and a The RC delay circuit completed by the third parallel capacitor C3, where R1 / C1 > R3 / C3 > R2 / C2. According to the above concept, the first controlled switch, the second controlled switch, and the third controlled open relationship in the improper power failure protection device are respectively a voltage control switch, and the improper power failure signal sent by the detector It is a voltage conversion signal from high-state voltage to low-state voltage, and is sent to the first controlled switch, the second controlled switch, and the third controlled switch after being delayed by the three RC delay circuits, and then respectively The voltage control switches are sequentially turned from on to off. Simple diagram description This case can get a deeper understanding through the following diagrams and detailed descriptions: The first picture: It is the block of the signal receiving end of the current market liquid crystal display monitor (LCj) Monitor) schematic diagram. The second figure: it is a schematic diagram of the circuit function block diagram of the preferred embodiment of this case. The components included in the diagram of this case are listed below: LCD screen monitor 〇1. AC / DC power converter 1 〇 Detector 11 1 'DC converter module 11 battery 12 switch button 13 first signal delay element 14 second signal delay element 15 third signal delay element 16 first controlled switch 17

C: \ Program Files \ Patent \ pdl544.ptd page 8

4 ^ 7SQ V. Description of the invention (6) * --- First controlled switch 1 8 Third controlled switch 1 9 First electrical energy storage element 20 Second electrical energy storage element Third electrical energy storage element 22 Signal receiving end 23 Liquid crystal Description of the preferred embodiment of the display signal generator 24 凊 Refer to the second figure, which is a schematic block diagram of the preferred embodiment of the present case, wherein when AC power is used, the detector 丨 i 1 detects the AC / DC power converter 1 0 (Adapter) DC voltage value output to DC converter module 1 J (DC / DC Module) 'and when using battery 12 for power supply, it will detect battery 12 output to the DC conversion module 丨 (DC / DC M 〇dule) DC voltage value 'In addition, the price tester 1 V1 also detects the state of the LCD display screen monitor switch button 13 at the same time, when the normal normal use state, the detector 11 1 series outputs a certain value The state-of-the-art electrical house signal is used to complete the RC delay circuit of the first signal delay element 14, the second signal delay element 15, and the third signal delay element 16, wherein the first parallel capacitor ci and the second parallel capacitor c 2 and the third parallel capacitor C 3 are fully charged Maintaining a high state voltage, so the voltage controlled switch is completed and controlled by the first signal delay element 14, the second signal delay element 15, and the third signal delay element 16, respectively. The switch 1 7 and the second receive The control switch 18 and the third controlled switch 19 will both maintain the ON state, and the first electric energy storage element 20, the first electric energy storage element 21, and the second electric energy misstored element 22 completed by the capacitors are also stored. Have power in case of improper power outage.

C: \ Program Files \ Patent \ pdl544. Ptd Page 9 41375ο 5. Description of the invention (7) ~-And when the AC power is suddenly cut off or the battery is low, or when the user's improper shutdown action occurs, detect The DC voltage value detected by the detector will be lower than a working voltage or the state of the switch button will be changed from ON to OFF. Therefore, the detector 1 1 1 will regard it as an improper power failure condition, and The voltage of the output signal is changed from a high-state voltage to a low-state voltage X to represent an improper power-off signal. At the same time, the first parallel capacitor C1 and the second parallel capacitor. And the third parallel capacitor C3 will simultaneously discharge through ri, r2, and R3 respectively, but the first electric energy storage element 20, the second electric energy storage element 21, and the third electric energy storage element 22 completed by the capacitor are briefly opposed to each other. The signal receiving terminal 23 of the LCD monitor and the liquid crystal display signal generator 24 are powered to prevent the power supply signal, the digital image signal, and the control signal from being broken at the same time. (L CD Monitor), at the same time, the first signal delay element 14 ′, the second signal delay element 15 and the third signal delay element 16 are the first parallel capacitor C1, the second parallel capacitor C2, and the third The parallel-connected capacitor C3 starts to discharge. When the voltage value of each capacitor decreases to a low level, the first controlled switch 17, the second controlled switch 18, and the third controlled switch 丨 9 Will change from the on-state to the off-state 'so we only need to adjust the value of each capacitor and resistance such as R1 / C1 > R3 / C3 > R2 / C2 order 1 to control the discharge speed of each capacitor and capacitor' Shadow Image signals, control signals, and power signals are turned off in order to meet the specifications of LCD monitors (LCD Monitors) manufacturers ’, thereby avoiding the lack of conventional technology and achieving the main purpose of the cost case.

The device in this case is applicable to any LCD monitor

C: \ Program Fiies \ Patent \ pdI544. Ptd Page 10 «3750 V. Invention Description (8) Μ ο nit 〇r) system, depending on the configuration of the system or changes, but can be appointed by persons familiar with this technology Shijiang thinks of all kinds of modifications, but they are not inferior to those who want to protect the scope of patent application.

C: \ ProgramFiles \ Patent \ pdl544.ptd page 11

Claims (1)

I humiliation range --- a kind of improper power-off protection device i, applied between a liquid crystal display screen monitor display signal generator, the LCD screen monitor is not used to receive-power signal; And the liquid crystal display signal generated by the device-digital image signal-a control signal, the device package a · Please tester 'is used to issue an improper power-off signal in response to an improper power-off situation; © 日 港 -ΐ4 The electric energy storage element is arranged on the path where the power signal is transmitted to the liquid. It is used to store electric energy in order to release electric energy to the liquid crystal display screen monitor when the power signal is interrupted. -A first electric energy storage element, which is arranged on the power supply circuit of the liquid crystal display signal generator, and is used to store electric energy in order to release electric energy to the liquid crystal display signal generator when an improper power failure occurs; The third power storage element is arranged on the path where the control signal is transmitted to the receiving end of the liquid crystal display monitor, and is used for storing power for release when the control signal is interrupted. The power is output to the receiving end of the liquid crystal display screen monitor; a first signal delay element is electrically connected to the detector, and is configured to receive the uninterrupted power-off signal and output after a delay of a first time; A second signal delay element is electrically connected to the detector, and is used to receive the improper power-off signal and output after a delay of a second length of time; a second delay element 'is electrically connected to the detector , Which is used to receive the improper power-off signal and delay output for a third period of time; C: \ Program.Files \ Patent \ pdl544.ptd Page 12 413750 VI. Patent application scope-a first controlled switch 'is electrically connected to the third signal delay element, the first electric energy storage element, and the liquid crystal display screen Between the receiving end of the monitor, it is switched from the on-state to the off-state in response to the triggering of the improper power-off signal after delaying the first length of time to interrupt the first power storage element from releasing power to the liquid crystal display. Action of the receiving end of the curtain monitor: a second controlled switch electrically connected between the second signal delay element, the second electric energy storage element, and the liquid crystal display signal generator. After the length of time, the improper power-off signal is triggered to switch from the on-state to the off-state to interrupt the operation of the second power storage element to release power to the liquid crystal display signal generator; and a third controlled switch, Is electrically connected between the third signal delay element, the third electric energy storage element, and the receiving end of the liquid crystal display screen monitor; After the third period of time, the improper power-off signal is triggered to switch from the on-state to the off-state to interrupt the operation of the third power storage element to release power to the receiving end of the liquid crystal display screen monitor. The magnitude relationship is: the first time length> the third time length> the second time length, so as to complete the work of automatically and sequentially turning off the digital image signal, the control signal, and the power signal ', thereby achieving an improper power failure. Protection function. 2 · The improper power failure protection device as described in item 丨 of the patent application scope, wherein the detector detects the power supply to the LCD screen martial arts. The DC voltage value in the power supply of one of the monitors and the The LCD displays the tea-type melon, and the key state is turned off. When the DC voltage value is lower than a working voltage or a switch button, C: \ ProgramFiles \ Patent \ pcil544.ptd Page 13 413750 6. Scope of patent application When the key status is changed from ON to OFF, it is considered that an improper power off condition occurs and an improper power off signal is issued. 3. The improper power-off protection device as described in item 2 of the scope of patent application, wherein the DC voltage value is a DC voltage output from an AC / DC power converter (Adapter) to a DC / DC Module value. 4. The improper power failure protection device as described in item 2 of the scope of patent application, wherein the DC voltage value is a DC voltage value output from a battery to a DC conversion module (dC / dc Module). 5. The improper power failure protection device as described in item 1 of the scope of patent application, wherein the first electric energy storage element is one of the paths connected in parallel to the power signal transmitted to the receiving end of the liquid crystal display screen monitor. capacitance. 6. The improper power-off protection device according to item 1 of the scope of patent application, wherein the second electric energy storage element is a capacitor connected in parallel to a power supply path of the liquid crystal display signal generator. 7 The improper power-off protection device as described in item 1 of the scope of patent application, wherein the second electric energy storage element is a capacitor connected in parallel to the path where the control signal is transmitted to the receiving end of the liquid crystal display screen monitor. . 8. The improper power-off protection device according to item j in the scope of the patent application, wherein the first signal delay element, the second signal delay element, and the third signal delay element are respectively connected by a first series resistor R1. And an RC delay circuit completed by a first parallel capacitor C1, a second series resistor R2, a second parallel capacitor C2, a third series resistor R3, and a third parallel capacitor C3, where R1 / C1 > R3 / C3 > R2 / C2. 9. Improper power failure protection device as described in item 8 of the scope of patent application, where 413750 6. The scope of the patent application The first controlled switch, the second controlled switch and the third controlled open relationship are respectively a voltage control switch, and the improper power off signal sent by the detector is a reason The voltage conversion signal from high-state electricity to low-state electricity is sent to the first controlled switch, the second controlled switch, and the third controlled switch after being delayed by the three RC delay circuits. The equal-voltage control switch turns from on to open in sequence. C: \ ProgramFiles \ Patent \ pdl544.ptd page 15