KR101953209B1 - A method for controling a monitor having the most power saving function during the sleep mode and idle mode - Google Patents

Abstract

The present invention relates to a method for controlling a maximal power saving monitor in a sleep mode and an idle state, which can be simply operated and minimize a difference of power consumption with an off-mode by blocking power to a converter and even power of a controlling unit, and supplying minimal power for operating only firmware of a monitor controlling unit even when a PC or a monitor is in a sleep mode or an idle state. According to the method for controlling a maximal power saving monitor in a sleep mode and an idle state, the monitor controlling unit (30) branches states of the monitor and the PC power to an idle state detecting subroutine when a sleep mode event is not generated by sensing the states of the monitor and the PC power, and turn-offs inverter power when the sleep mode event is generated. The idle state detecting subroutine performs: a step (S21) of requesting monitor screen searching; a step (S22) of snapshotting and capturing an input frame and a changed screen block diagram; a step (S23) of checking whether or not change of screen input is less than x%; a step (S24) of restarting the above steps when the change of the input is more than the x%, and analyzing a screen change pattern when the change of the input is less than the x%; a step of determining whether or not the analyzed screen change pattern indicates the idle state; and a step of checking the beginning again by returning to a starting step (S21) of an idle state determining subroutine when the analyzed screen change pattern is determined not to be in the idle state, and terminating the subroutine when the analyzed screen change pattern is determined to be in the idle state.

Description

A method for controling a monitor having the most power saving function during the sleep mode and idle mode}

The present invention relates to a control apparatus and method of a power saving monitor, and more particularly, to a control method of a hibernate monitor in a sleep mode and an idle state.

In particular, the present invention is an improvement of the inventor's prior patent application No. 2016-168870 (a control apparatus and method for a hibernate monitor in a sleep mode).

In general, the computer reduces power consumption by turning off the screen during standby mode (sleep mode) or power off mode of the monitor. At this time, the monitor screen is turned off, but the monitor power is supplied to consume power. That is, even when the screen is turned off, standby power is continuously supplied to the control board of the monitor, causing unnecessary standby power consumption.

Therefore, various studies have been conducted to prevent power waste by disconnecting the supply power without removing the plug for supplying commercial power to the monitor. For example, Korean Patent Publication No. 2013-0109060 (Computer and Computer Peripherals) The conventional technology disclosed in the standby power cut-off device includes a power switching unit at a front end of which power is supplied to the computer, and cuts off the standby power by shutting off the power of the computer as well as a peripheral device (monitor) when the computer is powered off.

That is, the computer is provided with an external commercial power, the power switching unit 20 for providing the operating power of each of the internal components of the computer, the outlet power switching unit 19 for cutting off / supplying the peripheral devices, the peripheral outlet ( 18), and when the computer enters the standby mode (sleep mode), the outlet power switching unit 19 is controlled by using the memory power to cut off the power supplied to the computer peripherals (AC power). Through this process, standby power is cut off to prevent waste of power saving.

However, although the first conventional technology has an advantage of preventing power waste of peripheral devices when the computer is powered off or in a power saving mode, the power switch 20, the outlet power switch 19, and the peripheral outlet ( Because of the need for built-in 18, the configuration of the computer is complicated and the cost of implementing a device for power saving is high, and thus it is difficult to be easily applied to a real computer and a peripheral device.

As a second conventional technology for solving this problem, Korean Patent Publication No. 2015-0123435 (monitor standby power cut-off device through computer interworking) has been disclosed. It provides a monitor standby power cut-off device through computer interworking that automatically cuts off the standby power of the monitor using VGA signal and minimizes user's operation by automatically supplying power to the monitor when the computer is running. will be.

That is, the second prior art monitors the standby power of the monitor by using only the VGA signal transmitted from the existing computer to the monitor without adding a separate configuration for shutting off the standby power of the monitor from the computer. It is to provide a monitor power cut-off device through computer interworking to simplify the configuration to cut off standby power and minimize the cost of device implementation.

2 and 3, as shown in FIG. 2, the monitor standby power cut-off device through computer interworking according to the second conventional technology includes an input device 10, a computer main body 100, and a monitor. 200. The computer main body 100 generates a digital interface signal (DVI signal) for controlling standby power of the monitor 200 and transmits the generated digital interface signal to the monitor 200. The computer main body 100 outputs 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 main body 100, and the input / output board 110. A central processing unit (CPU) 120 for determining whether the computer is in use or not based on the input signal or a signal according to a switch operation, 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 under the control of the central processing unit 120, and a memory 130 connected to the central processing unit 120.

Herein, the computer main body 100 may generate the digital interface signal differentially 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 main body 100 to the monitor 200. In the power-on state, the VGA signal is generated as a high signal (5V), and the power-off state 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 by the computer main body 100 as a power control signal.

The monitor 200 switches according to the video connector 220 for interfacing the digital visual interface (DVI) output from the computer main body 100 and the digital interface signal received from the video connector 220. DC voltage cut-off unit 230 for controlling the power by cutting off or supplying the monitor operating power (DC12V) output from the mode power supply (SMPS) 210, the monitor operating power supplied by the DC voltage cut-off unit 230 It includes a monitor control board 240 for driving to control the overall operation of the monitor. Here, when the computer main body 100 and the video connector 220 are connected in a high-definition multimedia interface (HDMI) scheme, 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 which performs a switching operation according to a digital interface signal (DVI signal) output from the video connector 220; And a MOSFET 231 for intercepting or supplying the monitor operation power in cooperation with the switching element Q1.

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 is connected to the collector of the field effect transistor Q1. 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, when power is normally supplied to the computer main body 100 and the input signal of the input device 10 is inspected, the CPU 120 controls the VGA board 150 when the power supply mode is not a power saving mode. The digital interface signal DVI5V is generated normally (high signal). Here, the VGA board 150 transmits the 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 pin 14.

As illustrated in FIG. 3, the DC voltage blocking unit 230 turns on the switch element Q1 by turning the base of the switching element Q1 to a high potential by the high level digital interface signal. When the switching element Q1 is turned on, the gate of the P-type MOSFET 231 connected to the collector has a low potential to turn on the MOSFET 231. When the MOSFET 231 is turned on, the monitor operating 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 operating power to the monitor control board 24. do. As a result, the monitor 200 operates normally to display the corresponding data on the screen.

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

On the contrary, when the power is turned off to the computer main body 100 or the input signal of the input device 10 is checked and the power saving mode is not used, the CPU 120 cannot control the VGA board 150 normally. The VGA board 150 may not generate the digital interface signal DVI5V normally (high signal). That is, the low signal (0V) is electrically generated. Here, the VGA board 150 transmits the digital interface signal to the monitor 200 using pin 9. The low level digital interface signal generated as described above 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 pin 14. The video connector 220 outputs a digital interface signal using pin 18 when the digital interface method is an HDMI interface method.

As illustrated in FIG. 2, in the DC voltage blocking unit 230, the base of the switching element Q1 is in 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 gate of the P-type MOSFET 231 connected to the collector has a high potential to turn off the MOSFET 231. When the MOSFET 231 is turned off, the monitor operating 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 operating power is supplied to the monitor control board 24. Shut off the supply. As a result, the monitor 200 is turned off.

In this case, conventionally, only the monitor screen is turned off. However, the second conventional technology cuts power (monitor operating power) supplied to the monitor control board at the source to prevent waste of power.

That is, when the computer main body 100 is not in use, a VGA signal is not generated and a low level digital interface signal is transmitted to the monitor 200, and the monitor 200 uses a low level VGA signal to transmit the switching mode. Monitor operating power generated by the power supply is blocked from being supplied to the monitor control board.

On the other hand, when the computer main body 100 is returned to the normal state again in a state in which the power of the monitor driving power is cut off by itself, the VGA board 150 is controlled by the control of the CPU 120. A high level digital interface signal is generated and transmitted to the monitor 200. In addition, the monitor 200 supplies the monitor driving power DC12V generated by the switching mode power supply 210 to the monitor control board 240 again by using the transmitted high level digital interface signal. Will return to normal operation.

As described above, the second conventional technology automatically supplies the power (monitor operating power) of the monitor by using the VGA signal (digital interface signal) generated from the computer main body 100 to the monitor 200 without user intervention. Or by blocking, it is very convenient for the user. In particular, it is possible to control the standby power of the monitor using only a VGA signal between the main body of the computer and the monitor without configuring a separate control device for power control of the monitor, thereby minimizing the cost of implementing a device for power cutoff. It will be possible.

However, the second conventional technology also requires power consumption for the sensing operation of the monitor to check the power state of the PC. Specifically, the power mode is largely 'power ON mode', 'power saving mode (DPMS)', ' There is a 'power off mode', in the power saving mode generally 1.4W is consumed for the operation of the DC voltage blocking unit 230 for detecting and checking it.

The screen is turned off, but only the inverter power is turned off in order to be immediately turned on, and power is supplied to an operation circuit such as the DC voltage breaker 230.

Conventional monitors such as CRTs require such a technique that the screen is displayed for a long time, but recently, since the monitor is activated as soon as the power is turned on, the power saving mode is rarely needed. It is becoming.

The present inventors, in order to solve the above problems of the second prior art, in a very simple and simple manner, when the sleep mode entry event comes from the PC, not only the power supply to the converter, but also the power of the controller itself, The third conventional technology has been proposed to supply only minimal power for operating only the firmware of the control unit so that there is almost no difference between the off mode and the power consumption, which is called "the control device and method of the hibernate monitor in the sleep mode." And patent applications (application number 2016-168870) and have been patented (patent No. 1744927).

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

First, an apparatus and method for controlling a hibernate monitor in a 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 device and a peripheral device of a hibernate 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 methods of the power saver monitor according to the third prior art. 6 is an operation flowchart of a process of returning from a sleep mode among control methods of a power saving monitor according to the third conventional technology, and FIG. This is a test report showing the difference in power consumption of the monitor according to the third prior art to which the technique is applied.

As shown in FIG. 4, the control apparatus of the power saving monitor in the third conventional sleep mode includes an SMPS 20 for supplying power to the monitor, an LED panel 80 for operating as a backlight for the monitor screen, and an SMPS. An inverter 70 for inverting the voltage from the inverter to the LED panel 80, a monitor controller 30 for controlling the operation of the monitor, a connector 40 for providing a monitor signal from the main board to the monitor controller, and It includes a key control unit 90 consisting of buttons for setting the operation of the monitor, wherein the monitor control unit 30, by the sleep (Sleep) mode 'PIO_INV' to give a 'Low' signal to the inverter 70, Power off the inverter such as the audio amplifier 71 and the USB hub 72, and if a wake-up signal is not input within a certain time, a trigger signal for a predetermined time (for example, 'PIO_PWR') 50ms' pulse wave) , It is reversed for a short period of time by pressing the power switch (POWER SW) of the key control unit (CONTROL KEY) (90), thereby implementing a sleep mode in which except for the firmware 38, and disable all.

Accordingly, when the sleep mode is entered, the monitor IC 30 may receive an input signal with a minimum power of about 0.3 W to operate only firmware, and when a wake up event is received, the PIO_INV may be used. Set the monitor signal to 'High' and turn on the monitor by generating a turn-on signal to 'PIO_PWR'.

That is, the trigger signal for transitioning to the sleep mode is a state in which only the firmware capable of checking the wake-up state from the main mode is activated, and the user controls the power in the key control unit 90 that deactivates all the remaining monitor control units. This signal is the same as the signal for pressing 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 placed between the SMPS 20 and the inverter 70, so that the 'Low' signal of the 'PIO_INV' in the sleep mode. It deactivates by and cuts off the power supply and the control signal to an inverter or the like. For example, the first switching element 51 is a switching element that cuts off the operating power of 12V or 19V from the SMPS 20 to the inverter 70, the second switching element 52 is the SMPS (20) And an inverter ON / OFF control signal and / or an inverter dimming control signal (ON / OFF / DIM) to the inverter 70.

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

Next, the detailed circuit of the said monitor control part 30 is explained in full detail with reference to FIG.

First, the MCU 31, as a subject that performs the operation of the entire control unit, performs the interfacing with the firmware 38, the flash memory 39, and the key control unit 90, while actually sleeping in the third conventional technology. Will perform the control operation of the hibernate monitor.

Next, the dual interface engine 34 interfaces with 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 an inverter 70. And controlling them while interfacing with the LED panel 80, wherein the display processing engine 32 provides an inverter on / off control signal and an inverter dimming control signal to the SMPS 20, and provides first and second control signals. Power and control signal blocking signals are provided 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.

In this case, the upper power supply 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 supply terminal is the key control unit 90. Is connected to the 'POWER_SW' stage, and the control stage is connected to the 'PIO_PWR' stage 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.

Meanwhile, VGA_5V of the connector 40 is also directly connected to the power supply terminal VDD of the firmware 38. Therefore, when VGA_5V power is supplied from the main board of the computer, the firmware is activated, and accordingly, the power of the key control unit The switch is triggered, and then the entire monitor control section 30 is activated.

The operation of the monitor controller will now be described in more detail with reference to FIGS. 5 and 6.

First, in the third conventional sleep mode control method of the hibernate monitor, the inverter power is turned off through the 'Low' signal to 'PIO_INV' in the sleep mode, and then waits for a while. When no wake-up signal is input, a short time that generates a trigger signal (for example, an 'H' pulse signal for 50 ms) to 'PIO_PWR' to power off the power switch (POWER SW) of the key control unit 90. Inverts all power except the firmware of the monitor control unit, so that almost all power of the monitor control unit is turned off, and the SMPS and the monitor control unit (Scaler IC) are practically kept at the minimum power supply (about 0.3 W). When the wake-up event comes from the main board, the monitor power is turned on by generating a signal of 'PIO_INV' to 'H' and a signal of 'on' to 'PIO_PWR'.

When describing each step, first, when the monitor power is 'on' (S51), the third conventional monitor control unit 30 detects the state of the monitor and the PC power (S52), as described above Via a connector and a dual interface engine 34.

Subsequently, whether or not the sleep mode event occurs is checked (S53). If the sleep mode event does not occur, it is continuously checked. If it occurs, the inverter 70, the audio amplifier 71, and the USB are set to PIO_INV = 'L'. Power of an inverter such as the hub 72 is turned off (S54).

After that, the controller waits for a predetermined time (S55), checks whether a wakeup occurs (S56), and if the wakeup occurs, restarts from the beginning while turning on the monitor power, otherwise (if no wakeup occurs for a predetermined time) In addition, by generating a trigger signal (for example, an 'H' pulse signal for 50 ms) for a predetermined time in 'PIO_PWR' (S57), the system enters the sleep mode in which all resources except the firmware 38 of the monitor controller are inactivated. This is the same as the signal that the user presses the power off button in the key control unit 90 which deactivates the entire monitor control unit.

Then, it is checked again whether or not the wakeup has occurred (S58), and if the wakeup has occurred, the monitor is turned on again from the beginning while turning on the power, otherwise (if the wakeup does not occur for a predetermined time), all processes are terminated ( S59).

For reference, even when the power supply is 'turned off', the power is still connected to the SMPS for supplying power to the monitor unless the monitor is unplugged, so it consumes about 0.3W of power. This is different from when the monitor is finally unplugged, but this power consumption is almost negligible.

On the other hand, the flow when a wake-up event occurs in the sleep mode in which almost all the monitor power supplies are turned off will be described with reference to FIG.

In the third conventional technology, even in a sleep mode in which almost all monitor powers are turned off, the firmware checks whether a wake-up event occurs (S61). When a wake-up event occurs from the main board of the computer, Since VGA_5V of the connector 40 is activated, 5V operating power is applied to the upper power supply 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 about 50 ms is applied to the 'POWER_SW' stage of the key control unit 90 through the PIO_PWR terminal (S62).

As a result, the same effect as the power switch of the monitor is turned on, the monitor control unit 30 is activated, the process proceeds to step S51 of Figure 5, so that the normal monitor control is made (Figs. 5 and 6). See "A" in the

Therefore, in the conventional monitor control unit, as shown in FIG. 7A, power consumption of 1.4 W is consumed even in the sleep mode. However, the apparatus for controlling the hibernate monitor in the sleep mode of the third prior art described above; According to the method, as shown in (b) of FIG. 7, in the sleep mode, the power consumption of the existing monitor is reduced from about 1.4W to about 0.3W, thereby saving about 1.1W per PC. .

That is, according to the third conventional technology, when the computer enters the sleep mode, by using the off function of all functions except the firmware, the control method of the sleep mode and the hibernation monitor in the sleep mode, which can reduce the power consumption as much as possible It can be provided.

However, according to the third conventional technology, it is possible to save power only when the main board notifies the sleep mode, and the user is temporarily engaged in other things while using the computer (for example, working with the computer). While in a state where the user is virtually inactive or having discussions with others) while the user is virtually using the computer but not in sleep mode (hereinafter referred to as the 'child state'), Since the monitor performs the full operation, there is no unnecessary energy consumption.

Republic of Korea Patent Publication No. 2013-0109060 (Standby power blocking device for computers and computer peripherals) Republic of Korea Patent Publication No. 2015-0123435 (Monitor standby power cutoff device through computer interworking) Korean Patent No.1744927 (Controlling Device and Method of Hibernate Monitor in Sleep Mode)

According to the present invention, in a very simple and simple manner, even when a sleep mode entry event comes from a PC, the monitor itself is recognized as a sleep mode, or the sleep mode is idle, but not in a sleep mode, as well as the power supply to the converter. To provide a control method of a hibernate monitor in a sleep mode and an idle state by cutting off the power of the control unit itself and supplying only a minimum power for operating only the firmware of the monitor control unit so that there is little difference between the off mode and the power consumption. will be.

In accordance with an aspect of the present invention, a method for controlling a hibernate monitor in a sleep mode and an idle state includes an SMPS 20 for supplying power to a monitor, and a monitor controller 30 for controlling a monitor device. A connector for providing a monitor signal from a main board to an LED panel 80 operating as a backlight of the monitor screen, an inverter 70 for inverting the voltage from the SMPS and supplying the LED panel 80 to the monitor controller ( 40) and a control method of a monitor comprising a key control unit 90 comprising buttons for setting an operation of the monitor, wherein the monitor control unit 30 includes a firmware 38, a flash memory 39, and a key control. Dual interface for interfacing with the MCU 31 which controls the whole control part while interfacing with the unit 90, and the connectors of the analog RGB connector 41, the DVI connector 42 and the HDMI connector 43 Inverter on / off control signals and inverter dimming to the SMDS 20 and the LVDS panel interface 35 for interfacing with the switch engine 34, the inverter 70, and the LED panel 80 and controlling them. A display processing engine 32 which provides a control signal and issues a power supply and control signal blocking signal to the first and second switching elements 51, 52 via a 'PIO_INV' terminal, and (a) the monitor power source is' On '(S11), the monitor control unit 30 detects the state of the monitor and the PC power (S12); (b) checking whether a sleep mode event has occurred (S13); (c) branching to an idle state detection subroutine if the sleep mode event does not occur as a result of the determination in step (b); (d) turning off the inverter power when a sleep mode event occurs as a result of the determination in step (b) (S14); (e) after step (d), waits for a predetermined time (S15) and checks whether a wakeup occurs (S16); (f) If the wake-up has not occurred within a predetermined time as a result of the determination in the step (e), by generating a signal having the effect of triggering the power off button of the key control unit 90 (S17), Causing the key control unit 90 to press the power off button in software; (g) starting from the beginning while turning on the inverter power when the wakeup occurs as a result of the determination in the step (e) (S19); The idle state detection subroutine may include (c1) the MCU 31 of the monitor control unit performing a monitor screen search request (S21) and (c2) after the (c1) step, an input frame. Snapshot by capturing and capturing the changed screen block (S22), (c3) checking whether the change in the screen input is less than x% (S23), (c4) step (c3) As a result of the determination, if the change of the input is more than x%, the process starts again from the step (c2), and if the change of the input is less than x%, performing the screen change pattern analysis (S24) and (c5) determining whether the screen change pattern analyzed in step (c4) indicates an idle state; and (c9) if the determination result in step (c5) determines that the idle state is not an idle state, the start of the idle state determination subroutine is performed. Return to step S21 to check again from the beginning, If it is determined that these conditions are satisfied, the subroutine is terminated and the process proceeds to step (d), and in step (c4), the standard of the screen change pattern stored in a database by calling the 'screen conversion pattern.DBF' file is stored in advance. In step (c5), it is determined whether (c50 ") the pixel color information of the change block of the current screen is continuously changed in comparison with the standard of the screen change pattern. If the total sum of the pixel color information in is changing, changes rapidly in only one line, or the color information itself is not changing, then you are currently playing a video, playing a game, typing, or reading an e-book. If it is determined that it is in progress, it returns to the step (c2), otherwise, the process proceeds to the next step, and (c54 ") the pixel color information of the change block of the current screen is If the change is over a certain level, is the pattern that the sum of the width and length of the pixel color information of the change block of the current screen match again? If it is determined (S58), in such a case, it is determined that the current display operation is under flash advertising irrelevant to the user's intention, and proceeds to the next step, otherwise, returns to the step (c2). It is characterized by.

Preferably, in the step (c1), the MCU 31 of the monitor control unit initializes the repetition count check parameter (N) while making a monitor screen search request, and (c6) the determination result in the step (c5). If it is determined that the idle state, the step of incrementing the repeat count check parameter (N) (S29), and (c7) after the step (c5), whether the repeat count parameter 'N' is greater than the reference value (No) If it is checked (S30), if the reference value is less than or equal to (c2), and if the reference value is exceeded, it is determined that the idle state characterized in that the subroutine is terminated.

More preferably, (c8) when the repetition frequency parameter 'N' is greater than the reference value No, as a result of the determination in the step (c7), it is determined whether the current screen change is still less than y%, and the current screen. If the change is greater than or equal to y%, the process returns to step (c1), and if the change of the current screen is less than y%, the subroutine is terminated.

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Most preferably, in the step (c50 ″), is the sum of the horizontal / vertical sum of the pixel color information of the change block of the current screen (c51 ″) continuously changing? It is determined whether or not (S55), in such a case, it is determined that the video or game is currently being executed, and returns to the step (c2), otherwise, it is determined that it is in the idle state from the viewpoint of the video execution. Going to the next step, (c52 ") if the sum of the width / vertical of the pixel color information of the change block of the current screen is not constantly changing, is the change block of the current screen reduced by one and the change in the average value is more than w%? If it is determined (S56), in such a case, it is determined that it is currently being typed, and returns to the step (c2). If not, it is determined that it is in an idle state from the viewpoint of typing, and then proceeds to the next step. , (c53 ") If the sum of the width and height of the pixel color information of the change block of the current screen does not continuously change, the pixel color information of the change block of the current screen is again changed. It junginga change above a certain level? If it is determined in operation S57 that the pixel color information of the change block of the current screen does not change by a predetermined reference value, it is determined that the current user is typing or reading an e-book, and (c2) If the pixel color information of the change block of the current screen is changing to a predetermined level or more, it is determined that the typing and the e-book are not executed, and the process proceeds to the step (c54 "). .

According to the control method of the hibernate monitor in the sleep mode and the idle state according to the present invention, the power consumption by using the off function of all functions except for the firmware, even when the computer main body or the monitor enters the sleep mode, as well as in the idle state, It is possible to provide a control method of a hibernate monitor in a sleep mode and an idle state which can minimize the power saving.

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

1 is a block diagram of a standby power blocking device of a computer and a peripheral device according to the first prior art.
2 is a block diagram of a monitor standby power cut-off device through computer interworking according to the second prior art;
3 is an exemplary circuit diagram of a video connector and a DC voltage blocking unit of FIG. 2.
4 is a block diagram of a control device and a peripheral device for a hibernate monitor in a sleep mode according to a third prior art;
5 is an operation flowchart of a process for entering a sleep mode of a control method of a power saving monitor according to a third prior art;
6 is an operation flowchart of a process of returning from a sleep mode of a control method of a power saving monitor according to a third prior art;
7 is a test report showing the difference in power consumption of the monitor according to the prior art without the hibernation technology in the sleep mode and the third prior art with the hibernation technology.
8 is a block diagram of a control device and a peripheral device of a hibernate monitor in a sleep mode and an idle state according to a first embodiment of the present invention;
9 is a flowchart illustrating an operation of a main process for detecting entering into a sleep mode and an idle state in a control method of a power saving monitor according to a first embodiment of the present invention;
10 is a flowchart illustrating an operation of a sub process detecting an idle state in a control method of a power saving monitor according to a first embodiment of the present invention;
FIG. 11 is a flowchart illustrating an operation of a sub process detecting an idle state in a control method of a power saving monitor according to a second embodiment of the present invention; FIG.
12 is an operation flowchart of a sub process detecting an idle state in a control method of a power saving monitor according to a third embodiment of the present invention;
13 is an exemplary diagram of an RGB hexacolor chart in a control method of a power saving monitor according to a third embodiment of the present invention.
14 is an exemplary diagram of an RGB hexacolor change block in the control method of a power saving monitor according to a third embodiment of the present invention;
15 is an example of an RGB hexacolor database file in a control method of a power saving monitor according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments according to the present invention.

(First embodiment)

First, a control method of a hibernate monitor in a sleep mode and an idle state according to a first embodiment of the present invention will be described with reference to FIGS. 8 to 10.

8 is a block diagram of a control device and a peripheral device of a hibernate monitor in a sleep mode and an idle state according to a first embodiment of the present invention, and FIG. 9 is a control method of a power saver monitor according to a first embodiment of the present invention. FIG. 10 is a flowchart illustrating operations of a main process detecting a state of entering an idle mode and an idle state, and FIG. 10 is a flowchart illustrating a subprocess detecting an idle state of a control method of a power saving monitor according to a first embodiment of the present invention.

First, a control apparatus for a hibernate monitor in a sleep mode and an idle state according to a first embodiment of the present invention will be described with reference to FIG. 8, which is almost similar to the third prior art apparatus in FIG.

That is, the control device of the power saving monitor in the sleep mode and the idle state of the first embodiment of the present invention, as shown in Figure 8, the SMPS 20 for supplying power to the monitor, the LED operating as a backlight of the monitor screen Provides the monitor 80 from the panel 80, the inverter 70 that inverts the voltage from the SMPS to the LED panel 80, the monitor controller 30 that controls the overall operation of the monitor, and the monitor signal from the main board. Connector 40, and a key control unit 90 including buttons for setting an operation of the monitor, wherein the monitor control unit 30 sends a 'Low' signal to 'PIO_INV' in a sleep mode. Power off the inverter 70, the audio amplifier 71, and the inverter such as the USB hub 72. If a wake-up signal is not input within a specific time, the PIO_PWR may be turned off. Trigger signal (e.g. '50ms Pulse wave), and inverted for a short time as long as the power switch of the KEY CONTROL 90 is pressed, and in the sleep mode to deactivate all except the firmware 38. If it is determined that the idle state is determined by itself even in the sleep mode, the same (maximum) power saving operation is performed.

On the other hand, in the sleep mode and idle state control device of the first embodiment of the present invention, unlike the third conventional art of Fig. 4, even if the monitor control unit 30 is not in the sleep mode, If it is determined that the monitor is in the idling state, a 'Low' signal is also issued to 'PIO_INV' to turn off the power supply of the inverter 70, the audio amplifier 71, and the inverter such as the USB hub 72. By doing so, it is possible to save more energy.

Therefore, in the sleep mode and the idle state, the monitor control unit (Scaler IC) 30 may receive an input signal with a minimum power of about 0.3 W to operate only the firmware, and when a wake up event comes in, ' Turns on the monitor power by generating a turn-on signal at 'PIO_PWR' and setting the signal of 'PIO_INV' to 'High'.

That is, the trigger signal for performing the hibernation operation is only the firmware that can check the wake-up state from the main mode is activated, the user in the key control unit 90 to deactivate the rest of the monitor control unit This signal is the same as the signal for pressing the power off button (for example, an off signal of about 50 ms).

Preferably, a first switching element 51 and a second switching element 52 are disposed between the SMPS 20 and the inverter 70, so that the 'PIO_INV' of 'PIO_INV' is in the sleep mode and the idle state. It is inactivated by Low 'signal and cuts off power and control signals to the inverter. In one example, the first switching element 51 is a switching element that cuts the operating power of 19V as an example from the SMPS 20 to the inverter 70, the second switching element 52 is the SMPS 20 And an inverter ON / OFF control signal and / or an inverter dimming control signal (ON / OFF / DIM) to the inverter 70.

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

Next, the detailed circuit of the said monitor control part 30 is explained in full detail with reference to FIG.

First, the MCU 31 is an entity that performs the operation of the entire control unit, and performs the interfacing with the firmware 38, the flash memory 39, and the key control unit 90, and in practice, the maximum in the sleep mode in the present invention. The control operation of the power saving monitor is performed.

Next, the dual interface engine 34 interfaces with 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 an inverter 70. And controlling them while interfacing with the LED panel 80, wherein the display processing engine 32 provides an inverter on / off control signal and an inverter dimming control signal to the SMPS 20, and provides first and second control signals. Power and control signal blocking signals are provided 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.

In this case, the upper power supply 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 supply terminal is the key control unit 90. Is connected to the 'POWER_SW' stage, and the control stage is connected to the 'PIO_PWR' stage 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.

Meanwhile, VGA_5V of the connector 40 is also directly connected to the power supply terminal VDD of the firmware 38. Therefore, when VGA_5V power is supplied from the main board of the computer, the firmware is activated, and accordingly, the power of the key control unit The switch is triggered, and then the entire monitor control section 30 is activated.

The operation of the monitor controller will now be described in more detail with reference to FIGS. 9 and 10.

First, the method of controlling the hibernate monitor in the sleep mode and the idle state of the present invention turns off the inverter power through the 'Low' signal to the 'PIO_INV' in the sleep mode and the idle state, and then waits for a while. When the wake-up signal is not input within a certain time, a trigger signal (for example, an 'H' pulse signal for 50 ms) is generated at 'PIO_PWR' to power off the power switch (POWER SW) of the key control unit 90. By inverting for a short period of time, all the power is turned off except for the firmware of the monitor control part. As a result, almost all power of the monitor control part is turned off, and the SMPS and the monitor control unit (Scaler IC) are set to the minimum power supply (about 0.3 W). Virtually turned off to remain on, and now turns on the monitor by generating a turn-on signal to 'H' and a 'PIO_PWR' signal when a wake-up event comes from the main board The.

When explaining this step by step, first, by the user, ① click the key control unit 90, when the monitor power is 'on' (S11), ② the monitor control unit 30 of the present invention is to monitor the state of the monitor and PC power As will be detected (S12), this is done through the various connectors and the dual interface engine 34 as described above.

Thereafter, whether the sleep mode event occurs is checked (S13). ③ If the sleep mode event has not occurred, branch to the idle state detection subroutine of FIG. 10, and ④ if the sleep mode event occurs, PIO_INV = 'L'. As a result, a 19V power supply such as an inverter 70, an audio amplifier 71, and an inverter such as a USB hub 72 is turned off (S14).

Thereafter, ⑤ wait for a predetermined time (S15), check whether the wake-up occurs (S16), ⑥ if the wake-up does not occur (when the wake-up does not occur for a certain time), the trigger signal of a certain time to 'PIO_PWR' (E.g., an 'H' pulse signal for 50 ms) is generated (S17) to enter a software off mode which deactivates all resources except the firmware 38 of the monitor control unit, which is the key to deactivate the entire monitor control unit. The control unit 90 is almost the same as the signal of the user pressing the power off button. However, in the software off state, unlike the hardware off step in which the user actually turns off the power by pressing the power button, it is preferable to check the wakeup from the main board while consuming minimal power.

⑦ On the other hand, if the wakeup occurs as a result of the determination in the step S16 of checking whether the wakeup occurs, the inverter such as the inverter 70, the audio amplifier 71, and the USB hub 72 may be configured with PIO_INV = 'H'. The 19V power supply is turned on, and the process starts again from the step S12 (S19).

For reference, even when the power supply is 'turned off', the power is still connected to the SMPS for supplying power to the monitor unless the monitor is unplugged, so it consumes about 0.3W of power. This is different from when the monitor is finally unplugged, but this 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 has not occurred branch to the idle state detection subroutine, this will be described in detail with reference to FIG.

First, the MCU 31 of the monitor control unit initializes the repetition count check parameter N while making a monitor screen search request (S21). For reference, the reason for using the repetition count check parameter (N) is that even if it is determined that the idle state is tentatively, if the user recognizes the idle state immediately between the boards for another moment or a moment, and enters the deep sleep mode, the deep dip Too often between sleep mode and normal operation mode is unreasonable, and also caused by unintended transition to deep sleep mode in case there is no monitor change in unexpected state for a while. It is to solve the possible problems and to ensure more certainty. That is, even if it is concluded that the various operation / non-operation pattern is inactive state, even if it is repeated no more than once, the transition to the deep sleep mode. The No is preferably about 10 to 100, more preferably about 20 to 60, most preferably about 50, but is not necessarily limited thereto. Even if 'No = 50', it is only a few tens of seconds, so it is not a big sacrifice in terms of energy saving.

Thereafter, the input frame is captured by capturing and the changed screen block is also captured by capturing (eg, 10 times) (S22).

Thus, it is checked whether the change in the input is less than x% (e.g., 5%) (S23). If the change in the input is more than x%, the user normally uses the computer and starts again from the step S22. If the change of X is less than x%, there is little change in the screen, but the screen change pattern analysis of S24 or less is performed to determine whether the user is in a special use situation such as a document writing state or simply a state such as a flash advertisement (child state). Will run.

For reference, in the present invention, after capturing a changed number of screens (for example, ten times) when the screen changes, the change is confirmed, and the monitor recognizes the change of each pixel. In addition, since the sinks H_sync and V_sync are raised at the start of each screen, the positional information can also be grasped.

In addition, some typical patterns of input changes are pre-databaseed and stored in the database as 'DB1', 'DB2', 'DB3', 'DB4', ... 'DBn'.

For example, 'DB1' is a database that stores a typical change pattern when the screen change amount of the captured image is 5% or more and there is no same screen, and when the screen change corresponds to 'DB1', the current screen is a video. Will be recognized as running

Similarly, 'DB2' is a database that stores a typical pattern of change in the case where the change of the image is repeated (for example, the same image is repeated repeatedly after 5 changes and stopping for a few seconds). DB2 ', the current screen is recognized as running a flash ad.

Subsequently, 'DB3' is a database storing 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 being in an SNS chat or writing a document. do.

In addition, 'DB4' is a database that stores a typical change pattern when a small block repeatedly changes at a specific position of an image, and when the screen change corresponds to 'DB4', the current screen is displayed on a clock or pop-up advertisement. It will be recognized as displaying.

As such, the typical screen change patterns are databased from 'DB1' to 'DBn', and by contrast, it is possible to quickly and easily grasp exactly what state of the current monitor screen changes with little resources.

Now, as a result of the determination in step S23, if the change in the input is less than x%, the screen change pattern.DBF, which is the database file from 'DB1' to 'DBn', is called to start analyzing the screen change pattern. (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 pattern 'DB1', since the current video is being executed, the process returns to step S22 (provisionally concluded that the children are not in the state), and If the captured screen change is not the screen of the 'DB1' pattern, it is not currently running the video, and thus tentatively concludes that the video is idle in terms of the video execution, and proceeds 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 being executed. Therefore, the process moves to the next check step and the current screen change is the screen of the 'DB2' pattern. is it? If it is determined whether or not (S26), the currently captured screen change is the screen of the 'DB2' pattern, since the flash ad is currently being displayed, the process proceeds to the next check step S27 (provisional conclusion that the operation state is not). If the currently captured screen change is the screen of the 'DB2' pattern, it is temporarily concluded that the operation state is temporarily in view of the current flash advertisement display, and returns to the step S22.

Subsequently, as a result of the determination in step S26, if the currently captured screen change is the screen of the 'DB2' pattern, it is most likely the current flash advertisement, and therefore, the process moves to the next check step, where the current screen change is made of the 'DB3' pattern. Is it the screen? If it is determined whether or not (S27), if the currently captured screen change is the screen of the 'DB3' pattern, it is currently typing for chat or document writing, and returns to the step S22 (provisional conclusion that it is not 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, so it is tentatively concluded that it is in idle state in terms of typing operation. Go 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 performed. Therefore, the process moves to the next check step, and the current screen change is the 'DB4' pattern. Is it the screen? It is determined whether or not (S28), if the currently captured screen change is a screen of the 'DB4' pattern, since the current display operation is a clock display or pop-up advertisement irrelevant to the user's intention, proceed to the next step (S29). (Provisionally concluded that the operation state is not), and if the currently captured screen change is the screen of the 'DB4' pattern, it is tentatively concluded that the operation state is tentatively operational from the current popup advertisement display point of view, and returns to the 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 idle state by the checking of the 'DB1' to 'DB4' pattern, the step of step S14 The inverter power supply may be turned OFF (the monitor power supply is in the deep sleep mode), but for more certainty, the repeat count parameter 'N' is incremented (S29), and the repeat count parameter 'N' is the reference value. It is checked whether or not (No) is exceeded (S30).

Thus, if the repetition frequency parameter 'N' is less than or equal to the reference value No, as a result of the determination in step S30, the process returns to step S22 again, and when the repetition frequency parameter 'N' is greater than the reference value No, the next step is finally performed. If the current screen change is more than y% (for example 5%) or more, and the current screen change is more than y% (for example 5%), the idle state judgment subroutine starts. Returning to step S21 and checking again from the beginning, if the current screen change is still less than y% (for example, 5%), the subroutine ends and the process proceeds to step S14 of FIG. That is, when PIO_INV = 'L', 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), and then the main routine of steps S14 to S19 is performed. Will proceed.

Therefore, in the conventional monitor control unit, as shown in FIG. 7A, power consumption of 1.4 W was consumed even in the sleep mode. However, the method for controlling the hibernate monitor in the sleep mode and the idle state of the present invention described above. According to FIG. 7B, the power consumption of the existing monitor is reduced from about 1.4 W to about 0.3 W in sleep mode as well as in the idle state, saving about 1.1 W per PC. It became possible.

(2nd Example)

Now, a control method of a hibernate monitor in a sleep mode and an idle state according to a second embodiment of the present invention will be described with reference to FIGS. 8 and 9 and mainly with reference to FIG.

FIG. 11 is a flowchart illustrating an operation of a sub process detecting an idle state in a control method of a power saving monitor according to a second embodiment of the present invention, corresponding to FIG. 10.

In the method for controlling the hibernate monitor in the sleep mode and the idle state of the second embodiment, as shown in Fig. 11, only steps S45 to S48 are different from steps S25 to S28 of the first embodiment, and The description is omitted for simplicity.

After calling screen change pattern.DBF in step S24 of FIG. 11 to start screen change pattern analysis, are pixel information of the current screen continuously changing? 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, the process returns to the step S22 (provisionally concluded that the children are not in the state), If the pixel information does not change continuously, it is tentatively concluded that it is temporarily idle from the point of view of moving image, and then 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 continuously change, since the video is not currently being executed, the process moves to the next check step, and does the pixel information of the current screen change in a constant direction up, down, left, and right? ? If it is determined whether or not (S46), if the pixel information of the current screen changes in a vertical direction, up, down, left and right, since the current document is being created, the process returns to step S22 (provisionally concluded that the children are not in the state), If the pixel information of the current screen does not change in the up, down, left, and right directions, it is tentatively concluded that the document is temporarily idle from the viewpoint of document writing, and then proceeds to the next step for counting.

Subsequently, as a result of the determination in step S46, if the pixel information of the current screen does not change in up, down, left, or right directions, it is likely that the document is not currently being created, and the flow moves to the next check step to change the color of the current screen. 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 colors (for example, z = 10), it is highly likely that the current user is reading an e-book. Returning (provisionally conclude that it is not an idle state), and once the color change of the current screen is more than z colors (for example, z = 10), it is tentatively concluded that it is tentatively idle from the perspective of e-book execution, Go 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 current e-book is not being executed, so the process moves to the next check step to change the current image. Is repetitive at a specific location? If it is determined whether the change in the current image is repeated at a specific position (S48), since the current display operation is not during a clock display or pop-up advertisement irrelevant to the user's intention, the process proceeds to the next step (S29). If the change of the current image is not repetitive at a specific position, it is tentatively concluded that the current pop-up advertisement display is in a tentative operation state and returns to the step S22.

Now, as a result of the determination in the step S48, if the change of the current image is repetitive at a specific position, it is determined that the idle state by the series of checking of the steps S45 to S48, the inverter power of the step S14 is immediately turned off (The monitor power supply may be moved to the deep sleep mode). However, for more certainty, the repeat count parameter 'N' is also incremented (S29), and the repeat count parameter 'N' exceeds the reference value (No). If the number of repetition parameters 'N' is greater than the reference value (No), the process proceeds to the next step, and it is determined whether the current screen change is more than y% (for example, 5%). Check again, and if the current screen change is still less than y% (for example, 5%), the subroutine ends and proceeds to step S14 of FIG. That is, when PIO_INV = 'L', 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), and then the main routine of steps S14 to S19 is performed. Will proceed.

(Third Embodiment)

Now, with reference to Fig. 12 mainly for the method according to the control apparatus of the hibernate monitor in the sleep mode and the idle state according to the third embodiment of the present invention, Fig. 8, 9, 13 to 15 assisted It demonstrates with reference.

FIG. 12 is a flowchart illustrating an operation of a sub process detecting an idle state in a control method of a power saving monitor according to a third embodiment of the present invention, corresponding to FIG. 10.

In the control method of the hibernate monitor in the sleep mode and the idle state of the third embodiment, as shown in Fig. 12, only in steps S55 to S58, steps S25 to S28 in the first embodiment (and S45 in the second embodiment). Step to step S48), the description of the remaining steps will be 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 sum of the horizontal and vertical values of the pixel color information of the change block of the current screen continue to change? It is determined whether or not (S55), in such a case, since the video or game is currently being executed, the process returns to step S22 (provisionally concluded that it is not in the state of the child). From this point of view, we tentatively conclude that we are idle and move on to the next step for counting.

Next, as a result of the determination in step S55, if the sum of the horizontal and vertical information of the pixel color information of the change block of the current screen does not continuously change, since the video is not currently being executed, the process proceeds to the next check step, 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 it is currently being typed, it returns to the step S22 (provisionally concluded that it is not an idle state), and if not, it is tentatively in terms of typing. A tentative conclusion is made that the condition is present, and the next step for counting.

Subsequently, as a result of the determination in step S56, if the sum of the horizontal and vertical information of the pixel color information of the change block of the current screen does not continuously change, it is likely that the current type is not currently being typed, and therefore the process moves to the next check step. Is the pixel color information of the change block on the screen changing beyond a certain level? If it is determined in step S57 that the pixel color information of the change block of the current screen does not change much, the user is likely to be typing or reading an e-book. (Provisionally concluded that it is not an idle state), and once the pixel color information of the change block on the current screen is changing above a certain level, it is tentatively concluded that it is not typing and e-book running, and counting To the next step.

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 to a predetermined level or more, at least the current typing or e-book is not executed. Is the pattern that the sum of the width and height of the pixel color information of the change block of? Match? It is determined whether or not (S58), in such a case, since the current display operation is under flash advertising irrelevant to the user's intention, the process proceeds to the next step S29 (provisionally concluded that the operation state is not). If not, it is temporarily concluded that the current flash advertising in terms of operation temporarily, and returns to the step S22.

Now, as a result of the determination in step S58, if the sum of the width / length of the pixel color information of the change block of the current screen is the same pattern, it is determined that it is in the idle state by a series of checking of steps S55 to S58. The inverter power supply in step S14 may be turned off immediately (the monitor power supply is in the deep sleep mode), but for more certainty, the repeat count parameter 'N' is also incremented (S29), and the repeat count It is checked whether the parameter 'N' is greater than the reference value (No) (S30). If the repetition frequency parameter 'N' is greater than the reference value (No), the process proceeds to the next step, and the current screen change is y%. If the current screen change is still less than y% (for example, 5%), the subroutine ends and proceeds to step S14 of FIG. 9. That is, when PIO_INV = 'L', 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), and then the main routine of steps S14 to S19 is performed. Will proceed.

13 is an exemplary diagram of an RGB hexacolor chart in a control method of a power saving monitor according to a third embodiment of the present invention, and FIG. 14 is an RGB hexacolor change block in a control method of a power saving monitor according to a third embodiment of the present invention. 15 is an example of an RGB hexacolor database file in the control method of a power saving monitor according to the present invention.

Although the present invention has been described above according to an embodiment of the present invention, a person skilled in the art to which the present invention belongs has changed and modified within the scope without departing from the technical spirit of the present invention. Of course.

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

Claims (7)

SMPS 20 for supplying power to the monitor, monitor control unit 30 for controlling the monitor device, LED panel 80 acting as a backlight of the monitor screen, and inverting the voltage from the SMPS to the LED panel 80 Control of the monitor of the monitor device including a supplying inverter 70, a connector 40 for providing a monitor signal from the main board to the monitor control unit, and a key control unit 90 for buttons for setting the operation of the monitor. As a method,
The monitor control unit 30 includes an MCU 31 which performs control operations of the entire control unit while interfacing with the firmware 38, the flash memory 39, and the key control unit 90, an analog RGB connector 41, The dual interface engine 34 interfacing with the connectors of the DVI connector 42 and the HDMI connector 43, and the LVDS panel interface which controls the interfacing with the inverter 70 and the LED panel 80 while controlling them. 35) and an inverter on / off control signal and an inverter dimming control signal to the SMPS 20 and a power and control signal blocking signal to the first and second switching elements 51 and 52 through the 'PIO_INV' terminal. The emitter comprises a display processing engine 32,
(a) when the monitor power is 'on' (S11), the monitor control unit 30 detects the states of the monitor and the PC power (S12);
(b) checking whether a sleep mode event has occurred (S13);
(c) branching to an idle state detection subroutine if the sleep mode event does not occur as a result of the determination in step (b);
(d) turning off the inverter power when a sleep mode event occurs as a result of the determination in step (b) (S14);
(e) after step (d), waits for a predetermined time (S15) and checks whether a wakeup occurs (S16);
(f) If the wake-up has not occurred within a predetermined time as a result of the determination in the step (e), by generating a signal having the effect of triggering the power off button of the key control unit 90 (S17), Causing the key control unit 90 to press the power off button in software;
(g) starting from the beginning while turning on the inverter power when the wakeup occurs as a result of the determination in the step (e) (S19);
Including;
The idle state detection subroutine,
(c1) the MCU 31 of the monitor controller performs a monitor screen search request (S21);
(c2) after the step (c1), a snapshot of the input frame is captured and the changed screen block is also captured by the snapshot (S22);
(c3) checking whether the change in the screen input is less than x% (S23),
(c4) starting from step (c2) if the input change is more than x% as a result of the determination in step (c3), and performing screen change pattern analysis if the input change is less than x% ( S24),
(c5) determining whether the screen change pattern analyzed in step (c4) indicates an idle state;
(c9) If it is determined in the step (c5) that the idle state is not determined, return to the start step of the idle state determination subroutine (S21) to check again from the beginning, and if it is determined that the idle state, the subroutine ends. And proceed to step (d),
The step (c4) is performed in comparison with the standard of the screen change pattern stored in the database by calling the 'screen conversion pattern.DBF' file.
Step (c5) is,
(c50 ") It is determined whether the pixel color information of the change block of the current screen is continuously changed in comparison with the standard of the screen change pattern, but the total sum of the pixel color information of the change block of the current screen is changed or only in one line. If it is determined that the color information itself is not changed rapidly or the color information itself is not changed, it is determined that the video or game is currently being executed, currently being typed, or the E-Book is being read, and the process returns to step (c2). If not, continue to the next step.
(c54 ") If the pixel color information of the change block of the current screen is changing to a predetermined level or more, it is again determined whether the sum of the horizontal and vertical sums of the pixel color information of the change block of the current screen is the same pattern (S58). In such a case, it is determined that the current display operation is in the flash advertising irrelevant to the user's intention, and proceeds to the next step, otherwise, the sleep mode is returned to the step (c2). And controlling a hibernate monitor in an idle state. The method of claim 1,
In the step (c1), the MCU 31 of the monitor control unit initializes the repetition number check parameter N while making a monitor screen search request.
(c6) incrementing the repetition count check parameter (N) when it is determined that the idle state is determined in the step (c5) (S29);
(c7) After the step (c5), it is checked whether the repetition number check parameter 'N' is greater than the reference value (No) (S30), and if the reference value is less than or equal to (c2), if the reference value is exceeded, the idle state And a subroutine is terminated by determining that the subroutine is terminated. The method of claim 2,
(c8) As a result of the determination in step (c7), when the repetition count check parameter 'N' is greater than the reference value No, it is determined whether the current screen change is still less than y%, and the current screen change is y%. If it is abnormal, the method returns to the step (c1), and when the current screen change is less than y%, the subroutine is terminated. delete delete delete The method of claim 1,
The (c50 ") step,
(c51 ") It is determined whether the sum of the width / length of the pixel color information of the change block of the current screen continues to change (S55), and in such a case, it is determined that the video or game is currently being executed, and the (c2) Step), otherwise, it is determined that the video is in the idle state from the viewpoint of the video execution, and proceeds to the next step.
(c52 ") If the sum of the width and length of the pixel color information of the change block of the current screen does not continuously change, it is again determined whether the change block of the current screen is reduced by one and the change in the average value is more than w% (S56). In such a case, it is determined that the user is currently typing, and the method returns to the step (c2). If not, it is determined that the user is in the idle state from the viewpoint of typing, and then proceeds to the next step.
(c53 ") If the sum of the horizontal and vertical pixels of the pixel color information of the change block of the current screen is not constantly changing, it is determined again whether the pixel color information of the change block of the current screen is changing above a certain level (S57). ), If the pixel color information of the change block of the current screen does not change by a predetermined reference value, it is determined that the user is typing or reading an e-book, and returns to step (c2). In the sleep mode and the idle state, when the pixel color information of the change block of the screen is changed to a predetermined level or more, it is determined that the typing and e-book is not being executed, and the process proceeds to step (c54 "). How to control the hibernate monitor.

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