KR102317040B1 - A method for controling a monitor apparatus for saving the power by analyzing the histogram of the designated block information and the the same - Google Patents

Abstract

The present invention relates to a monitor device and a control method thereof, wherein the kind of a currently running program is analyzed by a simple method using the histogram analysis of a specific execution window block such as the headline of a currently running program to control the brightness of a monitor more simply and more conveniently, thereby reducing overall energy consumption. A monitor control part (30) includes: an MCU (31) for receiving monitor signals while interfacing with various connectors (40) from a main board and performing the control operation of the entire control part; and a time controller (33) for providing gray scale signals, and low driver and column driver signals for an LCD panel. The MCU (31) send a signal for controlling the brightness degree of the LCD panel to a brightness control part (61), and in response, the brightness control part (61) controls the entire brightness of LED backlight (81, 81') through an inverter module (70) or directly. The MCU (31) analyzes the kind of a currently running application program, controls brightness to a determined brightness ratio corresponding to each program, and accordingly performing dimming control to perform power saving even during the execution of an application program. The analysis of the kind of the currently running application program is performed only using window information or the histogram analysis of a headline block.

Description

{A method for controling a monitor apparatus for saving the power by analyzing the histogram of the designated block information and the same}

The present invention relates to a power-saving monitor device and a control method therefor, and in particular, in a simple manner through a histogram analysis of a specific block (for example, a headline or an icon or a menu ribbon at a specific location) of the execution window of a currently executed program. The present invention relates to a monitor device and a method for controlling the same for easily controlling the brightness of a monitor by analyzing the type of a currently executed program to reduce overall energy consumption.

In general, a computer reduces power consumption by turning off the screen in standby mode (power saving mode) or monitor power off mode while in use. That is, even when the screen is turned off, standby power is continuously supplied to the control board of the monitor, and unnecessary standby power consumption occurs.

Therefore, various studies have been conducted to prevent power wastage by blocking the supply power without removing the plug for supplying commercial power to the monitor. The prior art disclosed in Standby Power Blocking Device) includes a power switching unit at the front end of which power is supplied to the computer, and cuts off the power of the computer as well as the peripheral devices (monitors) when the computer is powered off, thereby cutting off standby power.

That is, inside the computer, a power switching unit 20 that receives external commercial power and provides operating power of each component inside the computer, an outlet power switching unit 19 for shutting off/supplying power of peripheral devices, and a peripheral device outlet ( 18), and when the computer enters the standby mode (power saving mode), the outlet power switching unit 19 is controlled using the memory power to cut off the power (AC power) supplied to the computer peripheral devices. Through this process, standby power is cut off to prevent wastage of power saving.

However, the first prior art has the advantage of preventing power wastage of peripheral devices when the computer is powered off or in power saving mode. 18), the configuration of the computer is complicated and the implementation cost of the device for power saving is high, so it is difficult to easily apply it to an actual computer and peripheral devices.

As a second prior art for solving this problem, Korean Patent Publication No. 2015-0123435 (a monitor standby power interruption device through computer interlocking) is disclosed. It automatically cuts off standby power of the monitor using a VGA signal, and provides a monitor standby power cut-off device through computer interlocking to minimize user manipulation and improve convenience by automatically supplying power to the monitor when the computer is running. will be.

That is, the second prior art does not add a separate configuration for blocking the standby power of the monitor in the computer, but by using only the VGA signal transmitted from the existing computer to the monitor to block the standby power of the monitor, It is to provide a monitor power cut-off device through interlocking a computer to simplify the configuration for blocking standby power and minimize the device implementation cost.

This will be described in detail with reference to FIGS. 2 and 3 , and as shown in FIG. 2 , the monitor standby power blocking device through computer interlocking according to the second prior art is the input device 10 , the computer body 100 and the monitor. (200). The computer body 100 serves to generate a digital interface signal (DVI signal) for controlling the standby power of the monitor 200 and transmit it to the monitor 200 . The computer body 100 includes an input/output board 110 for interfacing the input signal of the input device 10, a power supply unit 140 for supplying driving power to the computer body 100, and an output from the input/output board 110 A central processing unit (CPU) 120 for determining the use state or non-use state of the computer based on the input signal or the signal according to the operation of the switch, and controlling the output of the digital interface signal according to the determined state of the computer; and a VGA board 150 for generating a digital interface signal to the monitor 200 according to the control of the central processing unit 120 , and a memory 130 connected to the central processing unit 120 .

Here, it is preferable that the computer body 100 differentially generate the digital interface signal according to a power-on state, a power-off state, and a power-saving state.

In addition, the digital interface signal uses a VGA signal transmitted from the computer body 100 to the monitor 200, and when the power is on, the VGA signal is generated as a high signal (5V), and the power is off Alternatively, in the power saving state, the VGA signal is generated as a low signal (0V).

The monitor 200 serves to cut off or supply power by using a digital interface signal generated from the computer body 100 as a signal for power control.

The monitor 200 is switched according to a video connector 220 for interfacing a digital interface signal (DVI) output from the computer body 100 and a digital interface signal received from the video connector 220 . DC voltage blocking unit 230 for controlling power by blocking or supplying monitor operation power (DC12V) output from the mode power supply (SMPS) 210 , monitor operation power supplied by the DC voltage blocking unit 230 . and a monitor control board 240 for controlling the overall operation of the monitor by driving it. Here, when the computer main body 100 and the video connector 220 are connected in an HDMI (High-Definition Multimedia Interface) method, the digital interface signal is replaced with an HDMI signal.

As shown in FIG. 2, the DC voltage blocking unit 230 includes: a switching element Q1 that performs a switching operation according to a digital interface signal (DVI signal) output from the video connector 220; and a MOSFET 231 interworking with the switching element Q1 to cut off or supply the monitor operation power.

The switching element Q1 uses a field effect transistor (FET), the digital interface signal is connected to the base of the field effect transistor Q1, and the gate of the MOSFET 231 is connected to the collector of the field effect transistor connected, the monitor operation power is connected to the source of the MOSFET 231 , and the output terminal of the monitor operation power is connected to the drain of the MOSFET 231 .

Thus, if power is normally supplied to the computer body 100 and the input signal of the input device 10 is in the use mode rather than the power saving mode, the central processing unit 120 controls the VGA board 150 to Allow the digital interface signal (DVI5V) to be generated normally (high signal). Here, the VGA board 150 normally transmits a digital interface signal to the monitor 200 using pin 9. The digital interface signal generated in this way is transmitted to the monitor 200 , and is transmitted to the DC voltage blocking unit 230 through the video connector 220 of the monitor 200 . Here, the video connector 220 transmits the input digital interface signal to the DC voltage blocking unit 230 using the 14th pin.

As shown in FIG. 3 , in the DC voltage blocking unit 230 , the base of the switching element Q1 becomes high potential by the high-level digital interface signal, and the switch element Q1 is turned on. When the switching element Q1 is turned on, the potential of the gate of the P-type MOSFET 231 connected to the collector is lowered to turn on the MOSFET 231 . When the MOSFET 231 is turned on, the monitor operation power (DC12V) output from the switching mode power supply 210 connected to the source of the MOSFET 231 flows to the drain to supply the monitor operation power to the monitor control board 24 . do. Accordingly, the monitor 200 operates normally and displays the corresponding data on the screen.

That is, in a state in which the computer body 100 operates normally, a VGA signal is normally generated and transmitted to the monitor 200 , and the monitor 200 operates a monitor generated by the switching mode power supply using the transmitted normal VGA signal. Power is normally supplied to the monitor control board so that the monitor operates normally.

On the other hand, if the computer main body 100 is powered off or the input signal of the input device 10 is checked and is not in use because it is in a power saving mode, the central processing unit 120 cannot control the VGA board 150 normally. , the VGA board 150 cannot normally generate the digital interface signal DVI5V (high signal). That is, a low signal (0V) is electrically generated. Here, the VGA board 150 normally transmits a digital interface signal to the monitor 200 using pin 9. The low-level digital interface signal generated in this way is transmitted to the monitor 200 , and is transmitted to the DC voltage blocking unit 230 through the video connector 220 of the monitor 200 . Here, the video connector 220 transmits the input low-level digital interface signal to the DC voltage blocking unit 230 using the 14th pin. When the digital interface method is the HDMI interface method, the video connector 220 outputs a digital interface signal using pin 18.

As shown in FIG. 2 , in the DC voltage blocking unit 230 , the base of the switching element Q1 becomes a low potential state by the low-level digital interface signal, and the switch element Q1 is turned off. When the switching element Q1 is turned off, the potential of the gate of the P-type MOSFET 231 connected to the collector increases to turn off the MOSFET 231 . When the MOSFET 231 is turned off, the monitor operation power (DC12V) output from the switching mode power supply 210 connected to the source of the MOSFET 231 does not flow to the drain, so that the monitor operation power is supplied to the monitor control board 24 . cut off the supply. As a result, the monitor 200 is turned off.

In this case, only the monitor screen was turned off in the prior art, but the second prior art blocks power (monitor operation power) supplied to the monitor control board at the source, thereby preventing power wastage.

That is, when the computer body 100 is not in use, the VGA signal is not generated, so a low-level digital interface signal is transmitted to the monitor 200, and the monitor 200 uses the transmitted low-level VGA signal to perform a switching mode. It blocks the monitor operation power generated by the power supply from being supplied to the monitor control board.

On the other hand, when the computer main body 100 returns to a normal state in the state where the power, which is the monitor driving power, is cut off by itself as described above, the VGA board 150 is controlled by the control of the central processing unit 120 and A high level digital interface signal is generated and transmitted to the monitor 200 . And the monitor 200 supplies the monitor driving power (DC12V) generated from the switching mode power supply 210 back to the monitor control board 240 using the transmitted high-level digital interface signal to the monitor 200 . will return to normal operation.

As described above, in the second prior art, the monitor power (monitor operation power) is automatically supplied by using the VGA signal (digital interface signal) generated from the computer body 100 to the monitor 200 as it is, without user manipulation. Or by blocking, it provides a very convenient user. In particular, it is possible to control the standby power of the monitor by using only the VGA signal between the existing computer body and the monitor without configuring a separate control device for controlling the power of the monitor, thereby minimizing the cost of implementing the device for power cut-off. it will be possible

However, the second prior art also requires power consumption for the sensing operation of the monitor in order to check the power state of the PC. There is a 'power OFF mode', and in the power saving mode, about 1.4W is consumed for the operation of the DC voltage blocking unit 230 for detecting and checking it in general.

Although the screen is in the off state, only the inverter power is turned off for the state to be turned on immediately, and power is supplied to the operation circuit such as the DC voltage cutoff unit 230 .

Existing monitors such as CRTs require this technology because the screen takes a long time to appear. However, in recent monitors, power saving mode is hardly necessary because the monitor is activated immediately when the power is turned on. Nevertheless, there is still a factor that wastes more energy is becoming

In order to solve the problem of the second prior art, the present inventor cuts off the power to the converter as well as the control unit itself when a sleep mode entry event is received from the PC in a very simple and simple manner, and monitors the A third prior art has been proposed in which only the minimum power for operating only the controller's firmware is supplied so that there is little difference in power consumption between the off mode and the power consumption, which is titled "A device and method for controlling a hibernation type monitor in a sleep mode" as a patent application (Application No. 2016-168870) and a patent (Patent No. 1744927).

The third prior art will be described with reference to FIGS. 4 to 7 .

First, an apparatus and method for controlling the maximum power saving type monitor in the sleep mode according to the third prior art will be described with reference to FIGS. 4 to 7 .

4 is a block diagram of a control apparatus and peripheral devices of a power-saving monitor in a sleep mode according to the third prior art, and FIG. 5 is a process of entering a sleep mode among the control method of a power-saving monitor according to the third prior art. 6 is an operation flowchart of a process for returning from a sleep mode among the control method of a power-saving monitor according to the third prior art, and FIG. It is a test report showing the difference in power consumption of the monitor according to the third prior art to which the technology is applied.

As shown in FIG. 4 , the third prior art control device of the power-saving monitor in the sleep mode includes an SMPS 20 that supplies power to the monitor, an LED panel 80 that operates as a backlight of the monitor screen, and the SMPS. Inverter 70 for inverting the voltage from and supplying it to the LED panel 80, the monitor control unit 30 for controlling the operation of the monitor, the connector 40 for providing the monitor signal from the main board to the monitor control unit, and Including a key control unit 90 made of buttons for setting the operation of the monitor, wherein the monitor control unit 30 emits a 'Low' signal to 'PIO_INV' in a sleep mode to the inverter 70, Turns off the power of the inverter such as the audio amplifier 71 and the USB hub 72, and if a wake-up signal is not input within a specific time, a trigger signal for a certain period of time (for example, 'PIO_PWR') 50ms' pulse wave) and inverted for as short as the time when the power switch (POWER SW) of the key control unit (KEY CONTROL) 90 is pressed to deactivate all but the firmware 38 transition to the mode.

Therefore, in the sleep mode, the monitor control unit (Scaler IC) 30 can receive an input signal with a minimum power of about 0.3W that operates only the firmware, and only when a wakeup event comes in, 'PIO_INV' Turn on the monitor power by generating a turn-on signal to 'High' and 'PIO_PWR'.

That is, in the trigger signal transitioning to the sleep mode, only the firmware capable of checking the wake-up state from the main mode is activated, and in the key control unit 90 that deactivates the rest of the monitor control unit, the user It becomes the same signal as the signal to press the off button (for example, an off signal of about 50 ms).

Preferably, the first switching element 51 and the second switching element 52 are interposed between the SMPS 20 and the inverter 70, and the 'Low' signal of the 'PIO_INV' in the sleep mode. It is deactivated by , and cuts off power and control signals to inverters, etc. For example, the first switching element 51 is a switching element that cuts off 12V or 19V operating power from the SMPS 20 to the inverter 70 , and the second switching element 52 is the SMPS 20 . It is a switching element that blocks an inverter on/off control signal and/or an inverter dimming control signal ON/OFF/DIM from the inverter 70 .

Preferably, the switching unit 60 is connected to the input terminal of the power switch (POWER SW) of the key control unit 90, activated by the trigger signal of the 'PIO_PWR' in the sleep mode, and automatically turned off As a result, a kind of pulse wave for triggering is provided, and a monitor controller turn-off signal is applied to the power switch (POWER SW) input terminal of the key controller 90 .

Subsequently, the detailed circuit of the monitor control unit 30 will be described in detail with reference to FIG. 4 .

First, the MCU 31 is the main body that performs the operation of the entire control unit, and while interfacing with the firmware 38 , the flash memory 39 , and the key control unit 90 , the sleep mode in the third prior art is actually performed. The control operation of the hibernation type monitor is performed.

Next, the dual interface engine 34 interfaces with the connectors 40 such as the analog RGB connector 41, the DVI connector 42 and the HDMI connector 43, and the LVDS panel interface 35 is the inverter 70 and while interfacing with the LED panel 80 , controlling them, the display processing engine 32 provides an inverter on/off control signal and an inverter dimming control signal to the SMPS 20 and providing first and second A power and control signal blocking signal is emitted to the switching elements 51 and 52 through the 'PIO_INV' terminal. Reference numeral '33' denotes an OSD, '36' denotes a power manager, and '37' denotes a clock generator.

At this time, the upper power terminal of the switching unit 60 is directly connected to VGA_5V of the connector 40 such as the analog RGB connector 41 and/or the DVI connector 42 , and the lower power terminal is the key control unit 90 . ) is connected to the 'POWER_SW' terminal, and its control terminal is connected to the 'PIO_PWR' terminal of the firmware 38 .

For reference, the PIO (Power Input/Output) control signals 'PIO_INV' and 'PIO_PWR' are controlled by a program of the firmware 38 .

On the other hand, the VGA_5V of the connector 40 is also directly connected to the power terminal VDD of the firmware 38 at the same time. Therefore, when VGA_5V power is supplied from the main board of the computer, the firmware is activated, and in response, the power of the key control unit The switch is triggered, and then the entire monitor control unit 30 is activated.

Now, the operation of the monitor control unit will be described in more detail with reference to FIGS. 5 and 6 .

First, in the third prior art method of controlling the maximum power-saving monitor in the sleep mode, the inverter power is turned off through the 'Low' signal to 'PIO_INV' in the sleep mode, waits for a while, and then within a specific time When a wakeup signal is not input, a trigger signal (for example, an 'H' pulse signal for 50ms) is generated in 'PIO_PWR' and the power switch (POWER SW) of the key control unit 90 is turned off. Inverted while inverting, eventually all power except the firmware of the monitor control unit is turned off, almost all power of the monitor control unit is turned off, and the SMPS and the monitor control unit (Scaler IC) are effectively maintained at the minimum power (about 0.3W). It is turned off, and now, when a wakeup event is received from the main board, the monitor power is turned on by generating the 'PIO_INV' signal to 'H' and the turn-on signal to 'PIO_PWR'.

When explaining this step by step, first, when the monitor power is turned on (S51), the monitor control unit 30 of the third prior art senses the status of the monitor and the PC power source (S52), which is various as described above. This is done through a connector and a dual interface engine (34).

Thereafter, it is checked whether the sleep mode event has occurred (S53), and if the sleep mode event has not occurred, it is continuously checked. A power source such as an inverter such as the hub 72 is turned off (S54).

After that, it waits for a certain period of time (S55), checks whether wake-up has occurred (S56), and if a wake-up occurs, it restarts from the beginning while turning on the monitor power, otherwise (if wake-up does not occur for a certain period of time) , 'PIO_PWR' generates a trigger signal (for example, 'H' pulse signal for 50 ms) for a certain time (S57), and transitions to sleep mode in which all resources except the firmware 38 of the monitor control unit are deactivated. This is the same as the signal that the user presses the power-off button in the key control unit 90 that deactivates the entire monitor control unit.

Thereafter, it is checked again whether wake-up has occurred (S58), and if wake-up occurs, the monitor power is turned on and restarted from the beginning, otherwise (if wake-up does not occur for a certain period of time), all processes are terminated ( S59).

For reference, even if the power supply is in the 'turn off' state, if the monitor power plug is not unplugged, the power is still connected to the SMPS for supplying power to the monitor, so about 0.3W of power is consumed. It is different from the state in which the power plug of the monitor is finally unplugged, however, this level of power consumption is almost negligible.

Meanwhile, a flow when a wakeup event occurs in a sleep mode state in which almost all monitor power sources are turned off will be described with reference to FIG. 6 .

In the case of the third prior art, even in the sleep mode state in which almost all monitor power is turned off, the firmware checks whether a wakeup event has occurred (S61). When a wakeup event occurs from the main board of the computer, the Since VGA_5V of the connector 40 is activated, the operating power of 5V is applied to the upper power terminal of the switching unit 60, and at the same time, the operating power VDD is also applied to the firmware 38, so that the firmware is programmed As such, an 'H' pulse of, for example, about 50 ms is applied to the 'POWER_SW' terminal of the key control unit 90 through the PIO_PWR terminal (S62).

As a result, the same effect as when the power switch of the monitor is turned on occurs, and when the monitor control unit 30 is activated, the process proceeds to step S51 of FIG. 5, so that normal monitor control is performed (FIGS. 5 and 6). see 'A' in

Accordingly, in the case of the conventional monitor control unit, as shown in FIG. 7 (a), power consumption of 1.4 W was consumed even in the sleep mode, but the control device of the maximum power saving type monitor in the sleep mode of the third prior art and According to the method, as shown in FIG. 7(b), in the sleep mode, the power consumption of the conventional monitor is reduced from about 1.4W to about 0.3W, saving about 1.1W per PC. .

That is, according to the third prior art, when the computer enters the sleep mode, by using the off function of all functions except the firmware, the control method of the maximum power saving type monitor in the sleep mode and the idle state can reduce power consumption as much as possible. be able to provide

However, even according to the third prior art, power saving is possible only when the main board notifies the sleep mode, and the user is temporarily engrossed in other tasks while using the computer (e.g., computer work). In a state in which the user hardly uses the computer, but not in sleep mode (hereinafter referred to as the 'idle state'), it is still in the third prior art Since the monitor of the full operation is performed, there is unnecessary energy consumption as much as that.

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Furthermore, in order to solve the problem of the third prior art, the present inventors, in a very simple and simple manner, when a sleep mode entry event is received from the PC, as well as when the monitor itself is recognized as a sleep mode or not in a sleep mode Even in the idle state, the power supply to the converter as well as the power supply of the control unit itself is cut off and only the minimum power that operates the firmware of the monitor control unit is supplied so that there is little difference between the power consumption and the off mode. A technology has been proposed, which has been patented in Korean Patent No. 1953209 under the title of "control method of a hibernation type monitor in sleep mode and idle state".

Hereinafter, the fourth prior art will be described with reference to FIGS. 8 to 12 .

First, an apparatus for controlling a hibernation type monitor in a sleep mode and an idle state according to an embodiment of the fourth prior art will be described with reference to FIG. 8, which is almost similar to the apparatus of the third prior art in FIG. .

However, unlike the third prior art of FIG. 4 , when the monitor control unit 30 determines that the monitor is in the idle state by self-irradiation even if it is not in the sleep mode, 'PIO_INV' is also set to 'Low'. ' It is possible to further save energy by emitting a signal to turn off the power of the inverter 70, the audio amplifier 71, and the inverter such as the USB hub 72.

Therefore, in the sleep mode and idle state, the monitor control unit (Scaler IC) 30 can receive an input signal with a minimum power of about 0.3W that operates only the firmware, and only when a wakeup event is received, the ' Turn on the monitor power by generating a turn-on signal in 'PIO_PWR' and the signal of 'PIO_INV' to 'High'.

That is, in the trigger signal for performing the hibernation operation, only the firmware capable of checking the wake-up state from the main mode is activated, and in the key control unit 90 that deactivates the rest of the monitor control unit, the user It becomes the same signal as the signal to press the power-off button (for example, the off signal of about 50ms).

Preferably, the first switching element 51 and the second switching element 52 are interposed between the SMPS 20 and the inverter 70, and the 'PIO_INV' of the 'PIO_INV' in the sleep mode and the idle state. It is deactivated by the 'Low' signal and cuts off power and control signals to inverters, etc. For example, the first switching element 51 is a switching element that cuts off an operating power of 19V from the SMPS 20 to the inverter 70 as an example, and the second switching element 52 is the SMPS 20 . It is a switching element that blocks an inverter on/off control signal and/or an inverter dimming control signal ON/OFF/DIM from the inverter 70 .

Preferably, the switching unit 60 is connected to the input terminal of the power switch (POWER SW) of the key control unit 90, activated by the trigger signal of the 'PIO_PWR' in the sleep mode, and automatically turned off As a result, a kind of pulse wave for triggering is provided, and a monitor controller turn-off signal is applied to the power switch (POWER SW) input terminal of the key controller 90 .

Next, the operation of the monitor control unit will be described with reference to FIGS. 9 and 10 .

First, the control method of the hibernation type monitor in the sleep mode and idle state turns off the inverter power through the 'Low' signal to 'PIO_INV' in the sleep mode and the idle state, waits for a while, and then waits for a specific time. When a wakeup signal is not input, a trigger signal (for example, an 'H' pulse signal for 50ms) is generated in 'PIO_PWR' and the power switch (POWER SW) of the key control unit 90 is turned off. Inverted while inverting, eventually all power except the firmware of the monitor control unit is turned off, almost all power of the monitor control unit is turned off, and the SMPS and the monitor control unit (Scaler IC) are effectively maintained at the minimum power (about 0.3W). It is turned off, and now, when a wakeup event is received from the main board, the monitor power is turned on by generating the 'PIO_INV' signal to 'H' and the turn-on signal to 'PIO_PWR'.

When explaining this step by step, first, by the user, ① when the monitor power is 'on' by clicking the key control unit 90 (S11), ② the monitor control unit 30 detects the status of the monitor and PC power. Bar S12, which is accomplished through various connectors and dual interface engine 34 as described above.

After that, it is checked whether a sleep mode event has occurred (S13), ③ if a sleep mode event has not occurred, it branches to the monitor screen search sub-process (S21 to S29) of FIG. 10, and ④ if a sleep mode event has occurred, PIO_INV = 'L', so that the 19V power supply of the inverter 70, the audio amplifier 71, and the inverter such as the USB hub 72 is turned off (S14).

After that, ⑤ wait for a certain time (S15), check whether wake-up occurs (S16), ⑥ if wake-up does not occur (if wake-up does not occur for a certain period of time), a trigger signal for a certain time in 'PIO_PWR' (For example, an 'H' pulse signal for 50 ms) is generated (S17), and it shifts to a software off mode in which all resources except the firmware 38 of the monitor control unit are deactivated, which is the key to deactivate the entire monitor control unit. It is almost the same as the signal that the user presses the power-off button in the control unit 90 . However, in the software-off state, it is preferable to check wake-up from the main board while consuming minimal power, unlike the hardware-off stage in which the power is actually turned off by the user pressing the power button.

⑦ On the other hand, as a result of the determination in the wake-up occurrence check step (S16), if wake-up has occurred, PIO_INV = 'H' and inverters such as the inverter 70, the audio amplifier 71 and the USB hub 72 It turns on the 19V power supply, etc., and starts again from the step S12 (S19).

For reference, even if the power supply is in the 'turn off' state, if the monitor power plug is not unplugged, the power is still connected to the SMPS for supplying power to the monitor, so about 0.3W of power is consumed. It is different from the state in which the power plug of the monitor is finally unplugged, however, this level of power consumption is almost negligible.

On the other hand, as a result of the determination in the sleep mode event occurrence check step S13, ③ if the sleep mode event does not occur, it branches to the monitor screen search sub-processes S21 to S29, which will be described in detail with reference to FIG. do.

First, the MCU 31 of the monitor control unit initializes the repeat count check parameter N while making a monitor screen search request (S21). For reference, the reason for using the repeat count check parameter (N) is that even if it is temporarily determined that it is in an idle state, it is recognized as an idle state immediately between the user's other work or a momentary glance and shifts to the deep sleep mode. It is rather unreasonable to go back and forth between the sleep mode and the normal operation mode too often, and it may occur by unintentionally transitioning to the deep sleep mode in case the user is using the system even though there is no monitor change for a while in an unexpected state. This is to solve possible problems and to increase certainty. That is, even if it is tentatively concluded that it is in the non-operation state by checking various operation/non-operation patterns, it is to shift to the deep sleep mode only when it is repeated No more times. The No is preferably about 10 to 100, more preferably about 20 to 60, and most preferably about 50, but is not necessarily limited thereto. Even if 'No=50', it is only tens of seconds, so it is not a big sacrifice in terms of energy saving.

Thereafter, the input frame is captured by taking a snapshot, and the changed screen block is also captured by taking a snapshot (for example, 10 times) (S22).

Thus, it is checked whether the change in the input is less than x% (eg 5%) (S23), and if the change in the input is more than x%, the user is using the computer normally, so it starts again from the step S22, If the change in is less than x%, there is little screen change, but in order to determine whether the user is in a special use situation such as a document writing state or simply a flash advertisement-like state (idle state), screen change pattern analysis below S24 is performed. will run

For reference, after capturing the changed screen a certain number of times (for example, 10 times) when the screen changes, the changes are checked, and the monitor recognizes the change of each pixel. In addition, since the syncs (H_sync, V_sync) are raised when each screen starts, location information can also be grasped.

In addition, some typical patterns for input change are preliminarily converted into a database, and these are stored in the database as 'DB1', 'DB2', 'DB3', 'DB4', ... 'DBn'.

For example, 'DB1' is a database storing a typical change pattern when the screen change amount of the captured image is 5% or more and there is no same screen. is recognized as executing

Similarly, 'DB2' is a database that stores a typical change pattern when the image change is repeated (eg, when the image is changed 5 times and the same image is repeated after stopping for a few seconds), and the screen change is ' DB2', it is recognized that the current screen is running a flash advertisement.

Continuing, 'DB3' is a database that stores a typical change pattern when the image changes in the horizontal direction, and when the screen change corresponds to 'DB3', the current screen is recognized as SNS chatting or document writing. do.

In addition, 'DB4' is a database storing a typical change pattern when a small block repeatedly changes at a specific location in an image. is recognized as being displayed.

In this way, the typical screen change pattern from 'DB1' to 'DBn' is converted into a database, and by preparing for this, it is possible to quickly and easily identify the current state of the monitor screen change with little resources.

Now, as a result of the determination in step S23, if the input change is less than x%, the database file 'screen change pattern.DBF' is called from 'DB1' to 'DBn' to start the screen change pattern analysis. do (S24).

First, is the current screen change the screen of the 'DB1' pattern? It is determined whether or not (S25), if the currently captured screen change is the screen of the 'DB1' pattern, since the video is currently being executed, it returns to the step S22 (provisionally concluded that it is not in the idle state), and the current If the captured screen change is not the screen of the 'DB1' pattern, the video is not currently running, so from the viewpoint of video execution, it is tentatively concluded that it is in an idle state, and moves to the next step for counting.

Next, as a result of the determination in step S25, if the currently captured screen change is not the screen of the 'DB1' pattern, the video is not currently running, so the next check step is performed, and the current screen change is the screen of the 'DB2' pattern is it? It is determined whether or not (S26), if the currently captured screen change is the screen of the 'DB2' pattern, since the flash advertisement is currently being displayed, it proceeds to the next check step, step S27 (provisional conclusion that it is not in an operating state) ), if the currently captured screen change is a screen of the 'DB2' pattern, once it is tentatively concluded that it is in an operating state from the viewpoint of the current flash advertisement display, the process returns to step S22.

Subsequently, as a result of the determination in step S26, if the currently captured screen change is a screen of the 'DB2' pattern, it is highly likely that it is a current flash advertisement. is it the screen? It is determined whether or not (S27), if the currently captured screen change is a screen of the 'DB3' pattern, it is currently typing for chatting or writing a document, so it returns to step S22 (provisional conclusion that it is not in an idle state) ), if the currently captured screen change is not a 'DB3' pattern screen, it is not currently typing for chatting or document writing. Proceed to the next step.

Subsequently, as a result of the determination in step S27, if the currently captured screen change is not the screen of the 'DB3' pattern, at least the current typing operation is not in progress, so the next check step is performed, and the current screen change is not the screen of the 'DB4' pattern. is the screen of It is determined whether or not (S28), if the currently captured screen change is a screen of the 'DB4' pattern, the current display operation is a clock display or pop-up advertisement irrelevant to the user's intention, so proceed to the next step (S29) (provisionally concluded that it is not in an operating state), and if the currently captured screen change is a screen of the 'DB4' pattern, once it is tentatively concluded that it is in an operating state from the point of view of the current pop-up advertisement display, return to step S22 do.

Now, as a result of the determination in step S28, if the currently captured screen change is a screen of the 'DB4' pattern, it is determined that the screen is in an idle state by checking the 'DB1' to 'DB4' patterns. The inverter power may be turned OFF (monitor power is shifted to the deep sleep mode), but for more certainty, the repetition number parameter 'N' is incremented (S29), and the repetition number parameter 'N' is set to the reference value. (No) It is checked whether it is exceeded (S30).

Thus, as a result of the determination in step S30, if the repetition number parameter 'N' is less than or equal to the reference value (No), the process returns to step S22 again, and when the repetition number parameter 'N' exceeds the reference value (No), the next step Finally, it is checked once again whether the current screen change is y% (eg 5%) or more, and if the current screen change is y% (eg 5%) or more, the idle state determination sub-process starts Return to step (S21) and check again from the beginning, and if the current screen change is still less than y% (eg, 5%), the sub-process is terminated, and the process proceeds to step S14 of FIG. 9 . That is, with PIO_INV = 'L', the 19V power supply of the inverter such as the inverter 70, the audio amplifier 71, and the USB hub 72 is turned off (S14), and then to the main routine of steps S14 to S19. will proceed

Now, with respect to another example of the sub-process corresponding to FIG. 10, with auxiliary reference to FIGS. 8 and 9, and mainly referring to FIG. 11, only in steps S45 to S48, and steps S25 to S28 of the first embodiment. Since it is different from the steps, descriptions of the remaining steps are omitted for the sake of brevity.

After calling 'screen change pattern.DBF' in step S24 of FIG. 11 to start analyzing the screen change pattern, does the pixel information of the current screen continue to change? It is determined whether or not (S45), if the pixel information of the current screen continues to change, since the current video or game is being executed, it returns to step S22 (provisionally concluded that it is not in the idle state), If the pixel information is not continuously changing, it is tentatively concluded that it is temporarily idle from the viewpoint of video execution, and proceeds to the next step for counting.

Next, as a result of the determination in step S45, if the pixel information of the current screen does not change continuously, since the video is not currently being executed, proceed to the next check step to determine whether the pixel information of the current screen changes in a constant direction up, down, left, and right ? It is determined whether or not (S46), if the pixel information of the current screen changes in a constant direction up, down, left, and right, since the document is currently being written, it returns to step S22 (provisionally concluded that it is not in an idle state), If the pixel information of the current screen does not change in a constant direction up, down, left, and right, it is tentatively concluded that it is in an idle state temporarily from the point of view of document creation, and the next step is performed for counting.

Subsequently, as a result of the determination in step S46, if the pixel information of the current screen does not change in a constant direction, up, down, left, and right, it is highly likely that the document is not currently being created. is less than z colors (eg z=10)? It is determined whether or not (S47), if the color change of the current screen is less than z-color (for example, z=10), it is highly likely that the current user is reading an e-book (E-Book), so go to step S22 is returned (provisionally concluded that it is not in the idle state), and if the color change of the current screen is more than z colors (eg z = 10), once it is tentatively concluded that it is in the idle state from the point of view of e-book execution, Proceed to the next step for counting.

Subsequently, as a result of the determination in step S47, if the color change of the current screen is more than z colors (for example, z=10), at least the e-book is not currently being executed, so the next check step is carried out to change the current image is repetitive at a specific location? It is determined whether or not (S48), if the change of the current image is repeated at a specific location, the current display operation is not a clock display or pop-up advertisement irrelevant to the user's intention, so the next step (S29) is proceeded. (It is tentatively concluded that it is not in an operating state), if the change of the current image is not repetitive at a specific location, it is temporarily concluded that the current image is in an operating state temporarily from the perspective of the current pop-up advertisement display, and the process returns to step S22.

Now, as a result of the determination in step S48, if the change in the current image is repeated at a specific location, it is determined that the current image is in an idle state by a series of checking in steps S45 to S48, so immediately turn off the inverter power in step S14. (The monitor power is switched to the deep sleep mode), but for more certainty, the repetition number parameter 'N' is also incremented (S29), and the repetition number parameter 'N' exceeds the reference value (No) It is checked whether or not (S30), and if the repetition number parameter 'N' exceeds the reference value (No), the next step is reached. is checked again, and if the current screen change is still less than y% (eg, 5%), the sub-process is terminated, and the process proceeds to step S14 of FIG. 9 . That is, with PIO_INV = 'L', the 19V power supply of the inverter such as the inverter 70, the audio amplifier 71, and the USB hub 72 is turned off (S14), and then to the main routine of steps S14 to S19. will proceed

Now, with respect to another example of the sub-process corresponding to FIG. 10, with auxiliary reference to FIGS. 8 and 9, and mainly with reference to FIG. 12, only in steps S55 to S58, steps S25 to S25 in the first embodiment Since it is different from step S28 (and steps S45 to S48 of the second embodiment), the description of the remaining steps is omitted for simplicity.

After the screen change pattern analysis is started by calling 'screen change pattern.DBF' in step S24 of FIG. 12, does the horizontal/vertical sum of pixel color information of the current screen change block continue to change? It is determined whether or not (S55), in such a case, since the video or game is currently being executed, it returns to the step S22 (provisionally concluded that it is not in an idle state), otherwise, once the video execution is The perspective tentatively concludes that it is tentatively idle, moving on to the next step for counting.

Next, as a result of the determination in step S55, if the sum of horizontal/vertical pixel color information of the change block of the current screen does not continuously change, the video is not currently being executed, so the next check step is performed, Is the change block reduced by one and the change in the mean value is more than w% (eg 3%)? It is determined whether or not (S56), in such a case, since you are currently typing, the process returns to step S22 (provisionally concluded that it is not in an idle state), and if not, it is temporarily idle from the viewpoint of typing A tentative conclusion is made to be in the state and proceeds to the next step for counting.

Subsequently, as a result of the determination in step S56, if the sum of horizontal/vertical pixel color information of the change block of the current screen does not continuously change, it is highly likely that the user is not currently typing, so proceed to the next check step, Is the pixel color information of the current screen change block changing over a certain level? It is determined whether or not (S57), if the pixel color information of the change block of the current screen does not change much, it is highly likely that the current user is typing or reading an e-book, so the step S22 (provisionally concluded that it is not in the idle state), and if the pixel color information of the change block of the current screen is changing over a certain level, it is tentatively concluded that typing and e-books are not running, and counting is stopped. proceed to the next step for

Subsequently, as a result of the determination in step S57, if the pixel color information of the change block of the current screen is changing by a certain level or more, at least currently typing or e-book is not being executed, so the next check step is performed, Is the horizontal/vertical sum of the pixel color information of the change block of the matching pattern? It is determined whether or not (S58), in such a case, since the current display operation is a flash advertisement irrelevant to the user's intention, the next step (S29) proceeds (provisionally concluded that it is not in an operation state), otherwise If not, it is tentatively concluded that the current flash advertisement is in an operating state temporarily, and the process returns to step S22.

Now, as a result of the determination in step S58, if the sum of the horizontal and vertical pixel color information of the change block of the current screen is a matching pattern, it is determined that the device is in an idle state by a series of checking in steps S55 to S58, The inverter power in step S14 may be turned OFF (monitor power is shifted to the deep sleep mode), but for more certainty, the repetition number parameter 'N' is also incremented (S29), and the number of repetitions Whether or not the parameter 'N' exceeds the reference value (No) is checked (S30), and if the number of repetitions parameter 'N' exceeds the reference value (No), the next step is reached, and the current screen change is y% (for example, 5%) or more is finally checked once again, and if the current screen change is still less than y% (for example, 5%), the sub-process is terminated, and the process proceeds to step S14 of FIG. 9 . That is, with PIO_INV = 'L', the 19V power supply of the inverter such as the inverter 70, the audio amplifier 71, and the USB hub 72 is turned off (S14), and then to the main routine of steps S14 to S19. will proceed

Korean Patent Laid-Open No. 2013-0109060 (Standby power blocking device for computers and computer peripherals) Korean Patent Laid-Open No. 2015-0123435 (Monitor standby power blocking device through computer interlocking) Korean Patent No. 1744927 (control device and method for hibernate monitor in sleep mode) Korean Patent No. 1953209 (Control method of hibernate monitor in sleep mode and idle state)

The present invention goes one step further from the fourth prior art, by analyzing the type of the currently executed program in a simple manner through the histogram analysis of a specific execution window block such as the headline of the currently executed program. The present invention relates to a monitor device and a method for controlling the same for reducing overall energy consumption by controlling brightness more simply and easily.

An energy-saving monitor device through a histogram analysis for a specific block of an execution window of an execution program according to an aspect of the present invention for achieving the above object, the SMPS 20 supplying power to the monitor, and controlling the monitor device The monitor control unit 30, the LCD panel 80 operating as a monitor screen, the inverter 70 that inverts the voltage from the SMPS and supplies it to the LCD panel 80, and provides the monitor signal from the main board to the monitor control unit. In the energy-saving monitor device comprising a connector 40 and buttons for setting the operation of the monitor and various switching units 50 , the monitor control unit 30 includes various connectors 40 from the main board and and an MCU (31) that receives a monitor signal while performing interfacing and controls the entire control unit, and a time controller (33) that provides grayscale signals, row driver and column driver signals to the LCD panel, the MCU (31) emits a signal to control the brightness level of the LCD panel to the brightness control unit 61, in response, the brightness control unit 61 through the inverter module 70 or directly LED backlight (81, 81') ), but the MCU 31 analyzes the type of the currently executed application program to perform brightness control at a predetermined brightness rate corresponding to each program, and performs dimming control according to the type of the application program. It is characterized in that power saving is performed even during execution, but the analysis of the type of the currently executed application program is performed only by analyzing the window information or the histogram of the headline block.

Preferably, the MCU 31 includes a main control unit 31a that controls the overall operation of the MCU 31, and a window for obtaining window information of the currently executed app in response to the control of the main control unit 31a. Designation of the information acquisition unit 31b, the block calculation unit 31c for cutting out a specific block of the executed window obtained by the window information acquisition unit 31b, and the running app cut out by the block calculation unit 31c A histogram extraction unit 31d for extracting a histogram according to the amplitude of each color block, and an app type analysis unit 31e for identifying the type of app executed through the histogram extracted from the histogram extraction unit 31d characterized by including.

Also, preferably, when it is determined that there is no wake-up within a predetermined time, the sleep mode is not immediately shifted to the sleep mode, but is shifted to the sleep mode after waiting a predetermined time, and sleep state hit information that stores and manages information about the waiting time The update unit 31f, the feedback control unit 62 that receives information from the brightness control unit 61 and exchanges information with the hit information update unit 31f, and the brightness of how much the brightness ratio is set during dimming control It is characterized in that it further comprises a brightness rate storage unit 63 for storing or reading the rate to be used for brightness control.

On the other hand, according to another aspect of the present invention for achieving the above object, there is a method for controlling an energy-saving monitor device through a histogram analysis of a specific block of an execution window of an execution program, histogram analysis of a specific block of an execution window of an execution program As a control method of an energy-saving monitor device through (a) when the monitor power is 'on' (S11), the monitor control unit 30 detects the status of the monitor and PC power (S12); (b) checking whether a sleep mode event has occurred (S13); (c) branching to the monitor screen search sub-process (S21 to S37) if the sleep mode event does not occur as a result of the determination in step (b); (d) as a result of the determination in step (b), when a sleep mode event occurs, setting the monitor screen to the minimum brightness by minimizing the brightness rate (S14); (e) after step (d), checking whether a wakeup occurs within a predetermined time (S15); and (g) returning to the beginning and starting again while turning on the VCC trigger switch 50 from the main board to the connector 40 from the main board when the wake-up occurs within a predetermined time as a result of the determination in step (e) (S19) ); Including, the step (c) includes, (c4) obtaining window information of the currently running app and cutting the block to a specified size (S24), and (c5) after the step (c4), the histogram value DB for each app While loading the step (S25) of extracting the histogram of the specified block obtained in step (c5), and (c6) comparing the histogram extracted in step (c5) with the histogram value DB for each app, the type of app executed It is characterized in that it includes the step of dimming control to a brightness ratio matching it.

Preferably, in step (c6), (c61) does the currently executed app correspond to 'document work'? Investigate whether (S26), and if the extracted window information is window information corresponding to 'document work', the monitor screen brightness rate is specified as y% (S27), (c62) the currently running app is ' Is it 'internet work'? (S28), and if the extracted window information is window information corresponding to the use of the Internet or e-book, the monitor screen brightness rate is specified as z % (S29), (c63), and the currently running app is , is it a 'movie or game mode'? It is checked whether or not (S31), and if the extracted window information is window information corresponding to a movie or game mode, it is characterized in that the monitor screen brightness rate is designated as a % (S32) (in this case, y < z < a).

Also preferably, before step (c4), (c1) after step (b), is it idle? Steps (S21) of checking whether or not (c2), if it is determined that the state is idle as a result of the determination in step (c1), steps (S22) and (c3) of darkening the brightness by setting the brightness ratio to x%; After step (c2) or if it is determined that the state is not in the idle state as a result of the determination in step (c1), the MCU 31 of the monitor control unit without changing the brightness rate determines whether the app is running? The method further includes a step (S23) of checking whether or not the application is currently running as a result of the check in step (c3).

Also preferably, after step (c6), (c7) after step (c6), is there a change in the app being used? Steps (S35) of checking whether or not there are at regular time intervals (S35), (c8) If, as a result of the determination in step (c7), there is a change in the app being used, the process returns to step (c1) and repeats, and if not, a new app Does this work? Steps (S36) of checking whether or not (c9) and (c9), as a result of the determination in step (c8), if there is a new running app, it returns to step (c4). If not, is the screen change unused? It is characterized in that it includes a step (S37) of checking whether or not.

More preferably, (c10) if there is no screen change as a result of the determination in step (c9), the process returns to step (d) after rechecking for a predetermined number of repetitions.

Also preferably, (f) as a result of the determination in step (e), if wake-up does not occur for a certain period of time, turn off the VCC trigger switch 50 from the main board to the connector 40 (S16), If wakeup occurs within a predetermined time, it is characterized in that it returns to the first while turning on the VCC trigger switch 50 from the main board to the connector 40 .

According to the energy-saving monitor device and control method therefor through histogram analysis of a specific block in the execution window of the execution program according to the present invention, through the histogram analysis of the specific block in the execution window of the currently executed program, the currently executed A monitor device and its device for further reducing overall energy consumption by enabling the brightness control of the monitor to be significantly faster, simpler, and easier than the fourth prior art, as it is possible to analyze only the significantly reduced amount of calculation in analyzing the type of program. control method is possible.

Other objects and advantages of the present invention in addition to the above objects and effects will become apparent through the detailed description of the embodiments with reference to the accompanying drawings.

1 is a block diagram of a device for blocking standby power of a computer and peripheral devices according to a first prior art;
2 is a block diagram of a monitor standby power blocking device through computer interlocking according to the second prior art;
3 is a circuit diagram of an embodiment of the video connector and DC voltage blocker of FIG. 2;
4 is a block diagram of a control device and peripheral devices of a hibernation type monitor in a sleep mode according to a third prior art;
5 is an operation flowchart of a process of entering a sleep mode in a method for controlling a power-saving monitor according to a third prior art;
6 is an operation flowchart of a process for returning from a sleep mode in a method for controlling a power-saving monitor according to a third prior art;
7 is a test report showing a difference in power consumption of a monitor in a sleep mode according to a prior art to which the maximum power saving technique is not applied and a third prior art to which the max power saving technique is applied.
8 is a block diagram of a control apparatus and peripheral apparatus of a hibernation type monitor in a sleep mode and an idle state according to an embodiment of the fourth prior art;
9 is an operation flowchart of a main process for detecting an entry into a sleep mode and an idle state in a control method of a power-saving monitor according to an embodiment of the fourth prior art;
10 is an operation flowchart of a sub-process for detecting an idle state in a method of controlling a power-saving monitor according to an embodiment of the fourth prior art;
11 is an operation flowchart of a sub-process for detecting an idle state in a method of controlling a power-saving monitor according to another embodiment of the fourth prior art;
12 is an operation flowchart of a sub-process for detecting an idle state in a method of controlling a power-saving monitor according to another embodiment of the fourth prior art;
13 is a block diagram of a control device and peripheral devices of a power-saving monitor according to an optimal embodiment of the present invention.
14 is a main flowchart of a method for controlling a power-saving monitor according to an optimal embodiment of the present invention;
Fig. 15 is a flowchart of a subroutine for executing a new app of Fig. 14;
16 is a view showing an example of histogram analysis of window information according to the present invention.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to FIGS. 13 to 18 with reference to the accompanying drawings.

13 is a block diagram of an apparatus for controlling a power-saving monitor and peripheral devices according to an optimal embodiment of the present invention, FIG. 14 is a main flowchart of a method for controlling a power-saving monitor according to an optimal embodiment of the present invention, and FIG. 15 is FIG. A flowchart of a subroutine for launching a new app in 14.

16 is a diagram illustrating an example of histogram analysis of window information according to the present invention.

(Example of control device of power saving monitor)

First, an energy-saving monitor device through a histogram analysis of a specific block of an execution window of an execution program according to an optimal embodiment of the present invention will be described with reference to FIGS. 13 and 16 .

As shown in FIG. 13 , the energy-saving monitor device through the histogram analysis of a specific block of the execution window of the execution program according to the optimal embodiment of the present invention operates as the SMPS 20 supplying power to the monitor, the monitor screen. LCD panel 80, the inverter 70 that inverts the voltage from the SMPS and supplies it to the LCD panel 80, the monitor control unit 30 that controls the overall operation of the monitor, and the monitor control unit that receives the monitor signal from the main board It includes a connector 40 provided as a , and buttons and various switching units 50 for setting the operation of the monitor.

The monitor control unit 30 includes an MCU 31 that performs the operation of the entire control unit, and the MCU 31 performs interfacing with the firmware and flash memory and the key control unit, while interfacing with the key control unit. In the sleep mode, the control operation of the hibernation type monitor is performed, as well as dimming control according to the app-aware mart analysis of the executed program.

The monitor control unit 30 includes a dual interface engine, a video processor, an OSD, an LVDS panel interface, an output buffer, and the like. For reference, the dual interface engine includes an RGB connector 41 as an analog RGB connector, a DVI connector ( 42) and a connector 40 such as an HDMI connector 43, and the like, and the LVDS panel interface controls the LCD panel 80 while interfacing with the LCD panel 80.

Receives a monitor signal while interfacing with various connectors 40 from the main board, the panel interface performs dimming control for the LCD panel 80 while interfacing with the inverter 70, and the video processor performs dual interfacing While processing the monitor signal from the engine, it provides grayscale signals, row driver and column driver signals for the LCD panel together with the time controller 33 , particularly between the VCC terminal of the connector 40 and the monitor controller 30 . The trigger switching unit 50 is turned on/off in response to a sleep event signal, thereby effectively turning off the monitor, while the EDID (extended display identification data) chip 44 contains various information about the monitor, When the monitor's information is sent to the graphics card, the computer can know which monitor is connected, so it can set the monitor optimally.

On the other hand, the MCU 31 emits a signal for controlling the brightness level of the LCD panel to the brightness control unit 61, in response, the brightness control unit 61 through the inverter module 70 or directly the LED backlight (81, 81) '), and according to the energy-saving monitor device of the present invention, the executed program is identified through the histogram analysis of the headline of the program executed in the MCU 31 and appropriate brightness control is performed. will do

In addition, the monitor device according to the present invention requires firmware, flash memory, OSD, power management and clock generator.

Now, in more detail with respect to the MCU 31 of the monitor control unit 30, the main control unit 31a activates by the DDC signal from the main board and applies standby power through the power control signal to the MCU 31 While the whole is activated, various typical LCD panel driving signals are emitted to the time controller 33. Additionally, the currently running app is easily identified in a histogram manner, and a matching brightness control signal is sent to the brightness control unit 61. By outputting it so that the overall brightness is adjusted, it is easy to perform power saving of the monitor.

In more detail, the main control unit 31a obtains window information of the currently executed app through the window information acquisition unit 31b, and the block calculation unit 31c cuts out a specific block of the window being executed. As an example, the upper left part of the output window of the monitor screen is cut to a specific size. Most of the time, as shown in Fig. 16 (a), the program icon or the unique menu ribbons are located in the upper left corner, so the corresponding part is cut, but it is of course okay to cut another block that shows the characteristics of the app well. .

Thereafter, through the histogram extraction unit 31d, the histogram of the specified block of the executed app is extracted (see Fig. 16 (b)), since these histograms have unique values according to the type of the executed app, By digitizing this, the app type analysis unit 31e can easily grasp the type of the executed app. For reference, in the case of the histogram in FIG. 16(b), the horizontal axis represents 8-bit RGB color information from 0 to 255, and the vertical axis represents the amplitude of each color. For example, what percentage is the size of a certain color? can be expressed as Well, the combination of these values forms a combination of different values for each app.

On the other hand, in some cases, each user's monitor usage style may be different, and some users read e-books slowly, so even if a new program is not executed or there is no screen change for a considerable time, there is no immediate wake-up. It is necessary to wait for a certain time without transitioning to the sleep mode. Therefore, in the present invention, it is preferable to manage such information in the sleep state hit information update unit 31f. In addition, the main control unit 31a exchanges such hit information with the heat information update unit 31f to use it for brightness control and monitor power saving. Similarly, the feedback control unit 62 receives information from the brightness control unit 61 and updates the hit information. Information is exchanged with the unit 31f, and the brightness rate for which the brightness rate is to be stored or read in the brightness rate storage unit 63 is used for brightness control.

Additionally, in the sleep mode, the MCU 31 issues an off signal to the trigger switching unit 50 to block VCC from the connector 40 from entering the monitor control unit 30 , thereby substantially turning off the monitor. It is preferable to do In this case, it shifts to a sleep mode in which all but the main controller 31a are deactivated, and when it is determined that the idle state is determined by itself even if it is not in the sleep mode, the same (maximum) power saving operation is performed as described above.

Conversely, the DDC of the connector 40 is also directly connected to the power supply terminal (VDD) of the main control unit 31a through the 'DDC_ON_CTRL' signal line of the dual interface engine of the monitor control unit 30 at the same time, and thus is connected from the main board of the computer. When the DDC power is supplied, the main control unit 31a is activated, and in response, the power switch of the key control unit is triggered, and then, through various switching elements 52 and voltage regulators, the MCU 31 as a whole, and the monitor control unit (30) The whole is activated.

(Example of control method of power saving monitor)

Now, the operation of the monitor control unit will be described in more detail with reference to FIG. 13 and mainly with reference to FIGS. 14 to 16 .

First, in the control method of the energy-saving monitor device through the histogram analysis of a specific block in the execution window of the execution program of the present invention, is the monitor power 'on' by first clicking the key control unit by the user? By checking whether or not (S11), it is continuously checked if it is not in the 'on' state, and if the power is in the 'on' state, the monitor control unit 30 of the present invention detects the state of the monitor and PC power, that is, the VCC is Is it 5V? It is checked whether or not (S12). This may be accomplished through, for example, various connectors 40 and a dual interface engine.

Again, if it is 'N', it is checked continuously, and if it is 'Y', it is checked whether a sleep mode event has occurred afterwards (S13). Branches to processes (S21~S37), and when a sleep mode event occurs, the brightness rate is set to 1% as an example, and the monitor screen is set to the minimum brightness. make (S14).

Thereafter, it is checked whether wake-up occurs within a predetermined time (S15), and if wake-up occurs within a predetermined time, 'Sleep Event = 1' and turning on the VCC trigger switch 50 from the motherboard to the connector 40 (S19), returning to the first time and if no wakeup occurs for a certain period of time, while turning off the VCC trigger switch 50 by setting 'Sleep Event=0' (S16), the entire power is turned off (S18) ). However, in case the user is away from the seat for a while or in case the e-book is in operation, did the wakeup occur within a predetermined time once again between steps S16 and S18? It is preferable to check again whether or not (S17). Thus, as a result of the check in step S17, if a wakeup occurs within a certain time, while turning on the VCC trigger switch 50 from the motherboard to the connector 40 with 'Sleep Event = 1' (S19), for the first time Return, and if no wakeup occurs for a certain period of time, the VCC trigger switch 50 is turned off as 'Sleep Event=0' (S16), and then the entire power is turned off (S18). At this time, how long do you wait? , it is preferable to update the waiting time in a feedback manner to the sleep state hit information update unit 31f by checking the user's computer usage pattern and continuously feeding it back.

That is, as a result of the determination in the wakeup occurrence check step (S15, S17), if wakeup has occurred, while turning on the VCC trigger switch 50 from the motherboard to the connector 40 as 'Sleep Event=1' (S19), it starts again from S12 (S19).

On the other hand, if it is determined in the sleep mode event occurrence check step (S13) that the sleep mode event does not occur, it branches to the monitor screen search process (S21 to S37), which will be described in detail.

First, is it idle even if not in sleep mode? It is checked whether the monitor is in an idle state (S21), and if it is determined that it is in an idle state, the brightness ratio is set to x% to make it darker (S22). Is the main control unit 31a of the MCU 31 running the app? It is checked whether or not (S23).

As a result of the check in step S23, if it is determined that the current app is being executed, the main control unit 31a obtains window information of the currently executed app through the window information acquisition unit 31b, and the block calculation unit A specific block (refer to (a) of FIG. 16) of the window executed in (31c) is cut (S24).

Then, while loading the histogram value DB for each app, through the histogram extraction unit 31d, the histogram of the specified block of the executed app is extracted (refer to FIG. 16 (b)) (S25), the app type analysis unit 31e ) to determine the type of the running app while comparing it with the histogram value DB.

Thus, as a result of the determination in step S25, does the currently executed application program (App.) correspond to 'document work'? It is checked whether or not (S26). Thus, when the extracted window information (more preferably, the app recognition mark) is window information corresponding to 'document work' such as Excel or Hangul, the monitor screen brightness rate is designated as y% (S27), Accordingly, the main control unit 31a performs the dimming control so that the brightness of the monitor screen is displayed as the darkest brightness among the brightnesses in which the app is running through the brightness control unit 61 . However, it is brighter than the brightness ratio in the idle mode in step S22 (ie, 1 < x < y).

Then, the main control unit 31a determines whether the extracted window information corresponds to 'Internet, e-book use'? It is checked whether or not (S28). Thus, when the extracted window information is window information corresponding to Internet or e-book use, the monitor screen brightness rate in which the monitor screen brightness is brighter is designated as z % (S29), and accordingly, the main control unit ( 31a) emits a dimming control signal corresponding thereto to the brightness control unit 61, and performs the corresponding dimming control again through the inverter 70 (ie, 1 < x < y < z).

Subsequently, the main controller 31a determines whether the extracted window information is window information corresponding to 'movie or game mode'? It is checked whether or not (S31). Thus, when the extracted window information is window information corresponding to a movie or game mode, a monitor screen brightness rate in which the monitor screen brightness is the brightest is designated as a % (S29), and accordingly, the main control unit 31a emits a dimming control signal corresponding thereto to the brightness control unit 61, and performs the corresponding dimming control through the inverter 70 again (ie, 1 < x < y < z < a).

In some cases, is the extracted window information other app execution window information? It is necessary to investigate whether or not (S33), in such a case, the monitor screen brightness rate is designated as the default (S34), which is not information stored in the pre-stored histogram value DB for each app, Since we do not know which brightness to apply, this is to do normal dimming control.

Since then, has there been any change in the app you are using? It is checked at regular time intervals (S35), and if yes, returns to step S21 and repeats, if not, does the new app run? It is checked whether or not (S36), if there is a new running app, it returns to the step S24, and if not, is the change of the screen unused? It is checked whether or not (S37).

On the other hand, if there is a change in the screen as a result of the determination in step S37, the steps S36 and S37 are repeatedly performed (continuously and repeatedly checked). On the other hand, if there is no change in the screen, the monitor is immediately returned to step S14 to turn off the monitor. It is possible to go to the state (the state in which the VCC signal is blocked among the monitor signals through the connector), but preferably, it is desirable to return to step S14 only after rechecking for a certain number of times. That is, as a result of the determination in step S37, if there is no screen change, proceed to step S41 of FIG. 15, initialize the repeat check variable N (S41), and execute a new app? It is checked again (S42), and if the new app is executed even then, it returns to the step S24, otherwise, after incrementing the repeated check variable (N) (S43), as many as the predetermined number of repeated checks (in FIG. 15) In the example, N=200) is repeatedly checked (S44).

Finally, as a result of the check in step S44, if the new app is still not executed, the process proceeds to step S14, and proceeds to sleep mode and power-off mode while setting the brightness rate of the monitor screen to the minimum (1%). will do

Of course, it is more preferable that the number of repeated checks of the repeat check variable N is also adapted to the user in a feedback manner (for example, N=200).

As described above, according to the 'energy-saving monitor device and control method thereof through histogram analysis of a specific block of the execution window of the execution program' of the present invention, i) primarily the currently running application program (App) only with the histogram value of the window information Monitor power consumption can be performed in a simple manner by simply identifying the type of It is possible to reduce the error by performing standby time and repeated execution, and iii) monitor power consumption by shutting off the standby power of all monitor control units except the main control unit by simple switching of the switching element 50 in idle mode or computer not in use. It is possible to save as much as possible.

In the above, the present invention has been described according to an embodiment of the present invention, but changes and modifications made by those of ordinary skill in the art to which the present invention pertains without departing from the technical spirit of the present invention also belong to the present invention. Of course.

(Fourth prior art: Fig. 8)
20: SMPS 30: monitor control unit
31: MCU 32: display processing engine
33: OSD 34: Dual Interface Engine
35: LVDS panel interface 36: power management
37: clock generator 38: firmware
39 flash memory 40 connector
51: first switching element 52: second switching element
60: trigger switching unit
70: inverter 71: audio amplifier
72: USB hub 80: LED panel
90: key control unit
(Invention: Fig. 13)
20: SMPS
30: monitor control unit
31: MCU 31a: main control unit
31b: window information obtaining unit 31c: block calculating unit
31d: Histogram extraction unit 31e: App type analysis unit
31f: Sleep state hit information update unit
33: time controller
40: connector 41: RGB connector
42: DVI connector 43: HDMI connector
44: EDID chip
50: trigger switching unit
61: brightness control unit 62: feedback control unit
63: brightness ratio storage unit
70: inverter
80: LCD panel 81,81': backlight lamp

Claims (9)

SMPS (20) for supplying power to the monitor, the monitor controller (30) for controlling the monitor device, the LCD panel (80) operating as a monitor screen, an inverter for inverting the voltage from the SMPS and supplying it to the LCD panel (80) In the energy-saving monitor device comprising (70), a connector 40 that provides a monitor signal from the main board to the monitor control unit, and buttons and various switching units 50 for setting the operation of the monitor,
The monitor control unit 30 receives a monitor signal while interfacing with various connectors 40 from the main board and performs a control operation of the entire control unit, the MCU 31, a grayscale signal for the LCD panel, and a row driver and a time controller (33) for providing a column driver signal;
The MCU 31 emits a signal for controlling the brightness level of the LCD panel to the brightness control unit 61, and in response, the brightness control unit 61 via the inverter module 70 or directly the LED backlight 81, 81') control the overall brightness, but
The MCU 31 is
a main control unit 31a that controls the overall operation of the MCU 31;
a window information obtaining unit 31b for obtaining window information of the currently executed app in response to the control of the main control unit 31a;
a block calculating unit 31c for cutting out a specific block of the window to be executed, obtained from the window information obtaining unit 31b;
According to the amplitude of each color of the specified block of the running app cut out by the block calculating unit 31c a histogram extraction unit 31d for extracting a histogram;
By including an app type analysis unit 31e for identifying the type of app executed through the histogram extracted by the histogram extraction unit 31d,
By analyzing the type of the currently executed application program, the brightness control is performed at a predetermined brightness rate corresponding to each program, and dimming control is performed accordingly. Only histogram analysis of a specific headline block of window information is performed.
As a control method of an energy-saving monitor device through histogram analysis of a specific block in the execution window of an execution program,
(a) when the monitor power is 'on' (S11), the monitor control unit 30 detects the status of the monitor and PC power (S12);
(b) checking whether a sleep mode event has occurred (S13);
(c) branching to the monitor screen search sub-process (S21 to S37) if the sleep mode event does not occur as a result of the determination in step (b);
(d) as a result of the determination in step (b), when a sleep mode event occurs, setting the monitor screen to the minimum brightness by minimizing the brightness rate (S14);
(e) after step (d), checking whether a wakeup occurs within a predetermined time (S15); and
(g) If, as a result of the determination in step (e), wake-up has occurred within a certain period of time, turning on the VCC trigger switch 50 from the main board to the connector 40, returning to the beginning and starting again (S19) ;
includes,
The step (c) is,
(c4) obtaining window information of the currently running app and cutting the block to a specified size (S24);
(c5) after step (c4), while loading the histogram value DB for each app, extracting the histogram of the specified block obtained in step (c5) (S25);
(c6) comparing the histogram extracted in step (c5) with the histogram value DB for each app, identifying the type of the running app, and dimming control with a matching brightness rate;
The step (c6) is,
(c61) Does the currently running app correspond to 'document work'? By investigating whether or not (S26), if the extracted window information is window information corresponding to 'document work', the monitor screen brightness rate is designated as y % (S27),
(c62) Does the currently running app correspond to 'internet work'? By examining whether or not (S28), if the extracted window information is window information corresponding to the use of the Internet or e-book, the monitor screen brightness rate is designated as z % (S29),
(c63) Does the currently running app correspond to 'movie or game mode'? By examining whether or not (S31), if the extracted window information is window information corresponding to a movie or game mode, the monitor screen brightness rate is designated as a % (S32),
Before step (c4),
(c1) After step (b), is it idle? A step of checking whether or not (S21) and,
(c2) if it is determined that the state is idle as a result of the determination in step (c1), darkening the brightness by setting the brightness to x% (S22);
(c3) After step (c2) or when it is determined that the state is not in the idle state as a result of the determination in step (c1), without changing the brightness rate, the MCU 31 of the monitor control unit determines whether the app is running? It further includes a step (S23) of checking whether
As a result of the check in step (c3), proceed to step (c4) only when it is determined that the current app is running,
In this case, x < y < z < a,
After step (c6),
(c7) After step (c6), is there any change in the app being used? Step (S35) of checking whether the
(c8) As a result of the determination in step (c7), if there is a change in the app being used, return to step (c1) and repeat the process. If not, is the new app executed? A step of checking whether or not (S36), and
(c9) As a result of the determination in step (c8), if there is a new running app, it returns to step (c4). If not, is the screen change unused? A control method of an energy-saving monitor device through a histogram analysis for a specific block of the execution window of the execution program, characterized in that it includes a step (S37) of checking whether or not there is. delete The method of claim 1,
When it is determined that there is no wakeup within a predetermined time, the sleep state heat information update unit 31f does not immediately transition to the sleep mode, but waits for a predetermined time and then transitions to the sleep mode, but stores and manages information on the waiting time. Wow,
a feedback control unit 62 that receives information from the brightness control unit 61 and exchanges information with the hit information update unit 31f;
In the dimming control, the brightness rate storage unit 63 for storing or reading the brightness rate for how much the brightness rate is to be used for brightness control. Control method of energy-saving monitor device through histogram analysis. delete delete The method of claim 1,
After step (c63), is the extracted window information other app execution window information? (S33), and in such a case, the monitor screen brightness rate is set as the default (S34), and if it is not information stored in the pre-stored histogram value DB for each app, normal dimming control is performed. A control method of an energy-saving monitor device through a histogram analysis for a specific block of the execution window of an execution program, characterized in that it is performed. The method of claim 1,
(f) As a result of the determination in step (e), if wakeup does not occur within a predetermined time, turn off the VCC trigger switch 50 from the motherboard to the connector 40 (S16) and wake up again within a predetermined time checking whether or not it occurs (S17); and
(h) If, as a result of the determination in step (f), wake-up occurs within a predetermined time, the VCC trigger switch 50 from the main board to the connector 40 is turned on while returning to the first to start again, and within a predetermined time If the wake-up does not occur, the step of turning off the entire power (S18);
Control method of an energy-saving monitor device through a histogram analysis for a specific block of the execution window of the execution program, characterized in that it further comprises a. The method of claim 1,
(c10) If there is no screen change as a result of the determination in step (c9), histogram analysis of a specific block in the execution window of the execution program, characterized in that it returns to the step (d) after reconfirming the predetermined number of iterations Control method of energy-saving monitor device through The method of claim 1,
As a result of the determination in step (e), if wakeup does not occur for a certain period of time, turn off the VCC trigger switch 50 from the motherboard to the connector 40 (S16), and if wakeup occurs within a certain time , A control method of an energy-saving monitor device through a histogram analysis for a specific block in the execution window of an execution program, characterized in that it returns for the first time while turning on the VCC trigger switch 50 from the main board to the connector 40.

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