KR0182927B1 - Energy-saving circuit of monitor built-in type computer and method thereof - Google Patents

Abstract

The present invention relates to a power-saving circuit device and a method of a monitor-integrated computer. The present invention relates to a monitor-off signal and a computer by detecting the presence of a modem signal of a fax / communication modem and a sound signal of a sound card without a key signal of a keyboard being generated. A monitor power control unit which cuts off power to the monitor by receiving a wake up detection unit outputting a main body off signal and a monitor off signal output from the wake up detection unit, and the power of the monitor power control unit The computer power control unit 30 which cuts off the power of the computer body by receiving the computer body off signal outputted from the wake-up detection unit in the state, and cutting off the power supplied to the computer body power control unit and the monitor power control unit. Wake-up to Generate Computer Off Signals and Monitor Off Signals for Windows Up) It is a wake-up power control unit for supplying the driving voltage of the detection unit. If the keyboard does not generate the key signal, the monitor-integrated computer generates only the modem signal of the fax / communication modem or the sound signal of the sound card. This effectively cuts off the power of the monitor and minimizes the power consumed by the monitor integrated computer.

Description

Power-saving circuit device and method for monitor-integrated computer

1 is a block diagram of a power control device of a conventional monitor integrated computer.

2 is a power-saving circuit diagram of a monitor integrated computer according to the present invention.

3 is a flowchart illustrating a power saving method of a monitor-integrated computer according to the present invention.

The present invention relates to a power-saving circuit device and a method of a monitor-integrated computer. In particular, the present invention relates to a monitor and a computer by determining whether a modem signal of a fax / communication modem and a sound signal of a sound card are generated while a key signal of a keyboard is not generated. A power saving circuit device and method for a monitor-integrated computer for minimizing power consumption.

In general, computers that are widely used are graphics adapters and data processing graphics signals centered on a central processing unit (CPU) that receives data and instructions, and executes and processes programs based on the input data and instructions. The main body of the computer, which is composed of an input / output card (I / O card) or the like for controlling the input / output of the input / output card, is separated from the monitor which displays the results processed by the computer.

In this way, the computer main body and the monitor are separated from the power supply circuit, so the production process is increased during the production of the computer and the production process is increased due to the increased production cost, which lowers the price competitiveness of the computer. In addition, since the power circuit is separated from the computer in which the computer main body and the monitor are separated, power consumption is not effectively reduced, and in particular, many disadvantages occur in reducing the power consumption of the monitor.

In order to alleviate such drawbacks, a computer (hereinafter referred to as a monitor integrated computer) that combines a monitor and a computer main body has recently been produced and spread. The monitor integrated computer can reduce power consumption by effectively controlling the power consumed by replacing the power supply circuit device separated by the computer body and the monitor.

The power circuit device of the monitor integrated computer will be described with reference to the accompanying drawings.

1 is a block diagram of a power control device of a conventional monitor-integrated computer, which detects whether a user inputs a signal according to a user's keyboard operation and a fax modem operation, and outputs a corresponding wake up signal upon signal input. The wake up detection unit 600 and the wake up detection unit 600 determine whether the monitor integrated computer system is operating according to the wake up signal for a predetermined time. Is not inputted, the power management unit 500 outputs a power control signal for controlling the on / off state of the power supplied to the monitor and the computer body according to the set time, and rectifies the applied AC voltage to a corresponding DC voltage. Connected to an output terminal of the power input unit 100 and an output terminal of the power input unit 100 to supply a voltage to the monitor according to a power control signal output from the power management unit 500. A computer main power supply unit 200 connected to the monitor power supply unit 400, an output terminal of the power input unit 100, and supplying a voltage to the computer main body according to a power control signal output from the power management unit 500; The auxiliary power supply unit 300 is connected to an output terminal of the power input unit 100 to supply the driving voltage applied to the power management unit 500.

Looking at the operation according to such a configuration as follows.

In general, the filter and rectifier used in the input terminal of the commercial AC power is commonly used in the power supply and auxiliary power supply used in the monitor and the computer body, as shown in Figure 1 attached to the power input unit 100 Configure in common.

The voltage applied through the common power input unit 100 is supplied to the corresponding monitor and the computer main body according to the power control signal of the power management unit 500. When power is supplied to the computer, the power management unit 500 initializes all the usage variables and then determines whether a wake up signal is output from the wake up detection unit 600.

Wake-up from a wake-up detection unit 600, which is composed of a keyboard controller for outputting a corresponding key signal according to keyboard operation, or a fax / communication modem controller for outputting a signal according to a transmission / reception operation of a fax or a communication modem. When the Up signal is not output, the power management unit 500 counts the time for which the wake up signal is not output through the counter to prevent unnecessary power consumption.

If the time counted through the counter is greater than or equal to a set value for shutting off the power supply of the monitor, the power manager 500 outputs a low level power control signal to monitor power supply 400. Activate standby mode to shut off the power supply.

When the wake-up signal is not input for a predetermined time after the monitor power supply unit 400 is turned off, the power manager 500 cuts off the power supplied to the monitor, and wakes up again. Wake Up) It judges the input of signal. When the wake up signal is not input in the process of determining the wake up signal, it is determined whether the set value for shutting off the power supply of the computer has elapsed again. When the setting value for shutting off the computer power supply is counted through a counter of the power management unit 500, the power supplied to the computer main body is lowered to a predetermined voltage or lower while the monitor is turned off, and the minimum power is reduced. It operates in sleep mode to consume only power.

When the wake-up detection unit 600 detects the wake-up signal while the sleep mode is detected, when a predetermined value is counted through a counter, the computer turns off the power supply to the computer. Switch to mode. In addition, when the wake-up signal is not input by continuously determining whether the wake-up signal is input while the power supplied to the computer body is cut off through the computer main body power supply 200, the wake-up signal may not be input. It stays off to prevent unnecessary power consumption.

In this integrated monitor, the power is turned on / off with one main switch so that only the main body of the computer can be used to perform work. When listening to music by generating a signal, a monitor is not necessary. Even in this case, the problem of wasting power used by the monitor is caused by simultaneously using the computer main body and the monitor.

As described above, the objective of the present invention is to minimize power consumption of the monitor by turning off the monitor when executing a task that can be performed without looking at the monitor.

When explaining the present invention for achieving the above object with the accompanying drawings as follows.

2 is a power-saving circuit of a monitor-integrated computer according to the present invention. The monitor is turned off by receiving a wake up detection unit 10 that detects and outputs a monitor off signal and a computer main unit off signal, and a monitor off signal output from the wake up detection unit 10. Receiving the computer body off signal output from the wake-up detection unit 10 while the monitor power control unit 20 and the monitor power control unit 20 are powered off, Computer body off signal for cutting off power supplied to the computer power control unit 30 and the computer main unit power control unit 30 and the monitor power control unit 20. The driving voltage of the wake-up (Wake Up) detector 10 for generating a display-off signal is a wake-up (Wake Up), power control unit 40 for supplying.

The monitor power control unit 20 receives a monitor off signal output from the wake up detection unit 10 as a base terminal and performs a switching operation, and the first switching transistor Q1. A first optocoupler 21 turned on / off by a switching signal outputted from the second transistor; a second switching transistor Q2 performing a switching operation controlled by an on / off operation of the first optocoupler 21; And a first pulse width modulation integrated circuit (PWM) that is turned on / off by the switching operation of the second switching transistor Q2 to generate a high signal and a low signal. And a third transistor Q3 which is turned on / off by a switching operation by receiving a high signal and a low signal output from the first PWM IC, and the third transistor Q3 is turned on. Induced voltage to on / off signal The first transformer 23 includes a plurality of resistors R1 to R4, diodes D1 and D2, and capacitors C1.

The computer main body power control unit 30 receives a monitor off signal output from the wake up detection unit 10 to a base stage and performs a switching operation, and a fourth switching transistor Q4. The second optocoupler 31 turned on / off by the switching signal output from Q4) and the fifth switching transistor Q5 controlled by the on / off operation of the second optocoupler 31 to perform the switching operation. And outputted from the second PWM IC 32 and the second PWM IC 32 which are turned on / off by the switching operation of the fifth switching transistor Q5 to generate a high signal and a low signal. A sixth transistor Q6 that is switched on and off by receiving a high signal and a low signal, and a second transformer that induces a voltage to the on / off signal of the sixth transistor Q6; 33, multiple resistors (R5-R8) and diodes (D3, D4), capacitors Emitter is a (C2).

The wake-up power control unit 40 is configured to switch on and off transistors Q7 and Q8 that receive a current output from the first PWM IC of the monitor power control unit 20 and the transistors Q7 and Q8. And a third transformer 41 which induces a voltage, a plurality of resistors R9, R10, and R11, a capacitor C1, and a coil L14.

The operation according to this is as follows.

The key signal from the keyboard is input and the modem signal of the fax / communication modem and the sound of the sound card are not generated when the key signal is generated in the normal mode operation state in which power is normally supplied to the monitor of the monitor-integrated computer and the computer body. Whether the signal is generated is detected through the wake up detection unit 10. At this time, the wake up detection unit 10 outputs a monitor off signal when a time set by the modem signal and the sound signal (hereinafter referred to as a wake up signal) elapses. That is, if the wake-up signal is detected and the wake-up signal continues to be generated for a predetermined time in advance, the power of the monitor is set in advance. It will generate a monitor off signal to shut off.

Therefore, when there is no key signal of the keyboard, the wake up signal is continuously generated for a predetermined time and when a predetermined time elapses, a high signal, that is, a monitor off signal is generated and applied to the monitor power control unit 20. Done. The monitor power control unit 20 receives a monitor off signal through the resistor R1 of the base terminal of the first switching transistor Q1. The input monitor off signal turns on the first switching transistor Q1 so that the collector voltage Vcc flows to the emitter terminal through the resistor R2 to turn on the light emitting diode LED1 of the first optocoupler 21.

When the light emitting diode LED1 of the first optocoupler 21 is turned on, the photo transistor PTr1 is turned on so that the potential difference between the cathode terminals of the diode D1 is lowered so that forward current flows through the diode D1. In this case, the resistor R3 and the capacitor C1 connected to the 'B' terminal of the first PWM IC 22 delay the operation of the first PWM IC 22 when the second switching transistor Q2 is initially turned on. .

When forward current flows through the diode D1, the current at the base end of the second transistor Q2 is lowered due to the current flowing through the diode D1. As a result, the second transistor Q2 is turned on, and the internal potential of the first PWM IC 22 drops below 1 V through the 'A' terminal of the first PWM IC 22 to be turned off through the 'C' terminal. ) Is applied to the gate terminal of the third switching field effect transistor Q3 through the resistor R4.

In this case, the third switching field effect transistor Q3 is a P-type field effect transistor. The third switching field effect transistor Q3 receiving the low signal at the gate terminal is turned on to store the voltage V1 supplied to the first transformer 23 in the coil L11. Therefore, since the supply voltage V1 is accumulated in the coil L11, the voltage is not induced in the coil L21, thereby blocking the flow of current to the diode D2, thereby blocking the voltage supplied to the monitor. That is, it operates in the suspend mode.

The wake up detection unit 10 detects whether the wake up signal is continuously generated while the suspend mode is in operation. The time which is not detected beforehand by the wake up detection part 10 is set. At this time, if the wake up signal does not occur for a predetermined time, the wake up detector 10 outputs the computer main body off signal.

The computer off signal output from the wake up detection unit 10 is applied to the computer main body power control unit 30. The computer main unit power control unit 30 receives the computer main unit off signal through the resistor R5 of the base terminal of the fourth switching transistor Q4. The input computer main body off signal turns on the fifth switching transistor Q5 so that the collector voltage Vcc flows to the emitter terminal through the resistor R6 to turn on the light emitting diode LED2 of the second optocoupler 31.

When the light emitting diode LED2 of the second optocoupler 31 is turned on, the porter transistor PTr2 is turned on so that the potential difference between the cathode terminals of the diode D3 is lowered so that forward current flows through the diode D3. In this case, the resistor R7 and the capacitor C2 connected to the 'K' terminal of the second PWM IC 32 may delay the operation of the second PWM IC 32 when the fifth switching transistor Q5 is initially turned on. .

When forward current flows through the diode D3, the current at the base end of the fifth transistor Q5 is lowered due to the current flowing through the diode D3. Thus, the fifth transistor Q5 is turned on, and the internal potential of the second PWM IC 32 drops below 1 V through the 'K' terminal of the second PWM IC 32 to be turned off through the 'M' terminal. ) Is applied to the gate terminal of the sixth switching field effect transistor Q6 through the resistor R8.

In this case, the field effect transistor of the sixth switching field effect transistor Q6 is a P-type field effect transistor. The sixth switching field effect transistor Q6 applied with the low signal to the gate terminal is turned on to store the voltage V2 supplied to the second transformer 33 in the coil L12.

Therefore, since the supply voltage V2 is accumulated in the coil L12, the voltage is not induced in the coil L22, thereby blocking the flow of current to the diode D4, thereby blocking the voltage supplied to the computer main body. That is, it operates in the standby mode (Stand By Mode).

In the stand-by mode and the suspend mode, the voltage for driving the wake up detection unit 10 is via the wake up power control unit 40. To be supplied. The wake up power control unit 40 is turned off by receiving a low signal to the base terminal of the transistors Q7 and Q8 through the 'B' terminal of the first PWM IC 22 in the monitor power control unit 20. . When the transistor Q7 is turned off, when a counter electromotive force is generated in the coil L13 due to the transistor Q8 being turned off while the supply voltage V3 input to the transformer 41 is induced through the coil L13, the coil ( The voltage is induced at L23 to supply the driving voltage to the wake up detection unit 10 through the diode D7.

Also, in the normal mode, the current supplied through the diode D4 of the computer main power control unit 30 and the diode D2 of the monitor power control unit 20 wakes up through the diodes D5 and D6. (Wake Up) The drive voltage of the wake-up detector 10 is input to detect a wake up signal.

Referring to the operation flow of the present invention operated as described above with reference to the accompanying drawings as follows.

3 is a flowchart illustrating a power saving method of a monitor integrated computer according to the present invention. The process of turning on the power of the monitor integrated computer (51), and when the power is turned on in the power on process (51), the bias program Wake generated when a wake-up signal is generated without a key signal being generated for a predetermined time after the initialization process 52 is executed and the user executes a desired task after the initialization process 12 is completed. First wake-up detection process 53 for determining whether the generation time of the wake-up signal has elapsed a predetermined time, and wake-up in the first wake-up detection process 53 (54) executing a suspend mode for shutting off the monitor when the wake-up signal generation time elapses, and executing the suspend mode ( 54) is running The first key signal detection process 55 for determining whether a key signal has been generated through the keyboard, and when the key signal is detected in the first key signal detection process 55 in a suspend mode operation state. In step 56, the monitor is turned on to turn on the monitor and the operation of the integrated computer is normal. If the key signal is not generated in the first key signal detection process 55, the controller wakes up. A second wake up signal detection process 57 for detecting whether a signal is continuously generated and a time for which a wake up signal is preset in the process of detecting the second wake up signal When the elapsed time, the method for determining whether a key signal is generated during the step (58) of executing a standby mode (Stand By Mode) for shutting down the computer main body, and the step (58) of executing the standby mode A second key signal detection process 59, and the second When the key signal is detected in the key signal detecting step 59, the monitor and the main body of the computer are turned on, and the integrated computer is normally operated to execute the normal mode.

Looking at this process in detail as follows.

The power is turned on through the power-on process 51 to operate the monitor integrated computer. When the power is turned on in the monitor integrated computer, a bias (BIOS) program stored in a ROM is operated to execute a process 52 of initializing the monitor integrated computer.

After completing the monitor-integrated computer initialization process 52, the user executes a desired program through the keyboard. In this case, the first wake-up is performed when the user wakes up the computer and executes a program or enters a wake-up signal without inputting a signal to the monitor-integrated computer due to other events. The signal detection process 53 determines the time at which the wake up signal is generated.

When the wake-up signal generation time elapses longer than the preset time, the monitor wake-up signal is generated in the first wake-up signal detection process 53. In addition, when the key signal of the keyboard is continuously input in the first wake-up signal detection process 53, the monitor-integrated computer enters a normal mode operation state in which the monitor-type computer normally operates.

The monitor is powered off through a process 54 of executing the suspend mode by the monitor off signal generated in the first wake up signal detection process 53. In the process 54 in which the suspend mode in which the monitor is powered off is executed, it is determined whether the wake up signal is still detected and the wake up signal is not detected. Otherwise, the second wakeup signal detection process 57 determines whether the wakeup signal is not generated. At this time, when the wake up signal elapses through the second wake up detection process 57, the computer main body off signal is generated.

The computer main body is turned off through a process 58 in which a standby by mode is executed by the computer main off signal generated in the second wake up signal detection process 57. At this time, the work environment before the computer is turned off is stored using the work environment file. On the other hand, if the wake-up signal does not pass the predetermined time, the suspend mode state is maintained.

When Stand By Mode is executed, the monitor and the computer body are turned off. When the key signal is input through the keyboard in the process of executing the standby mode 58, the key signal is detected through the second key signal detection process 59. Through the process 60, the monitor and the computer main body are turned on by the key signal detected through the second key signal detection process 59, and the stored working environment file is returned to execute the normal mode. The monitor integrated computer will operate normally. On the other hand, if the key signal is not generated continuously, the standby mode (Stand By Mode) state is maintained. When the monitor-integrated computer is normally operated through the normal mode 60, the first wake up signal detection process 53 is performed to detect the wake up signal. Will return.

Accordingly, the present invention effectively cuts off the power of the monitor in the monitor-integrated computer, in which only the modem signal of the fax / communication modem or the sound signal of the sound card is generated when the key signal of the keyboard is not generated, thereby minimizing the power consumption of the monitor-integrated computer. It works.

Claims (7)

A wake-up detection unit for detecting the presence of a modem signal of a fax / communication modem and a sound card of a sound card in a state where a key signal of a keyboard is not generated, and outputting a monitor off signal and a computer main unit off signal; A monitor power control unit which cuts off the monitor power by receiving a monitor off signal output from the wake up detection unit; and a computer main unit output from the wake up detection unit in a state in which the monitor power control unit is powered off. A computer power control unit for receiving a signal to cut off power to the computer main body, and a wake up for generating a computer main body off signal and a monitor off signal for shutting off power supplied to the computer main body power control unit and the monitor power control unit. And a wake-up power control unit for supplying a driving voltage of the detection unit. Is a power saving circuit of a monitor-integrated computer. The switching power supply of claim 1, wherein the monitor power control unit comprises: a first switching transistor configured to receive a monitor off signal output from a wake up detection unit to a base stage and perform a switching operation; and a switching signal output from the first switching transistor. A first optocoupler turned on / off by the second optocoupler, a second switching transistor performing a switching operation controlled by an on / off operation of the first optocoupler, and a switching operation of the second switching transistor turned on / off by a switching operation of the second switching transistor A first PWM IC that generates a high signal and a low signal, and a third that is switched on by receiving a high signal and a low signal output from the first PWM IC and performing a switching operation A transistor and a first transistor configured to induce a voltage in accordance with an on / off operation of the third transistor. Circuit device. The switching circuit of claim 1, wherein the computer main power supply control unit is configured to receive a monitor off signal output from a wake up detection unit to a base stage and perform a switching operation, and a switching output from the fourth switching transistor. A second optocoupler turned on / off by a signal, a fifth switching transistor controlled by an on / off operation of the second optocoupler to perform a switching operation, and a switching operation of the fifth switching transistor on / off And a second PWM IC generating a high signal and a low signal, and a high signal and a low signal output from the second PWM IC to be switched on and off. A sixth transistor and a second transformer for inducing a voltage to the on / off signal of the sixth transistor; Furnace. The wake-up power control unit of claim 1, wherein the wake-up power control unit receives a current output from the first PWM IC of the monitor power control unit and performs a switching operation, and a third transformer 41 inducing a voltage by turning on / off the transistor. A power saving circuit device for a monitor-integrated computer, characterized by the above-mentioned. A process of turning on the power to drive the monitor-integrated computer, an initialization process in which a bias program is executed when the power is turned on in the power-on process, and after the initialization process is completed, First wake-up detection process for determining whether a wake-up signal generation time elapses when a wake-up signal is generated without a key signal being generated for a predetermined time. And executing a suspend mode that shuts off the monitor when the wake up signal generation time elapses in the first wake up detection process. A first key signal detection step of determining whether a key signal is generated through a keyboard while a suspend mode is executed, and the first key When the key signal is detected during the call detection process, the monitor is turned on in the suspend mode operation state to turn on the monitor for normal operation of the integrated computer, and the first key signal is detected. If a key signal is not generated in the process, a wakeup signal detection process for detecting whether a wakeup signal continues to be generated, and a wakeup signal detection process for a second wakeup signal When a wake up signal elapses, a key signal is generated during a process of executing a standby mode to shut down the computer main body and a process of executing the standby mode. And detecting the second key signal in the second key signal detection process and turning on the monitor and the main body of the computer. Horse Power Save mode, the monitor method of integrated computer that contains the process that is running (Normal Mode). The method of claim 5, wherein the detecting of the second wake up signal comprises: executing a suspend mode of the monitor power when the wake up signal is detected, and wake up; Up) If a signal is not detected for a predetermined time period is a process of executing a standby mode (Stand By Mode) to cut off the power of the computer main body, characterized in that the power saving method of the integrated monitor computer. 6. The method of claim 5, wherein the second key signal detection process comprises executing a standby mode for shutting off power to the monitor and the main body of the computer when the key signal is not detected, and when the key signal is detected, the monitor and the computer. A power saving method for a monitor-integrated computer, characterized in that the normal mode in which the main body power is turned on is executed.