CN101685603B - Very-low power consumption display control circuit and relative method - Google Patents

Very-low power consumption display control circuit and relative method Download PDF

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CN101685603B
CN101685603B CN 200810211744 CN200810211744A CN101685603B CN 101685603 B CN101685603 B CN 101685603B CN 200810211744 CN200810211744 CN 200810211744 CN 200810211744 A CN200810211744 A CN 200810211744A CN 101685603 B CN101685603 B CN 101685603B
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controller
coupled
capacitor
display
dc voltage
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CN 200810211744
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CN101685603A (en )
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林宋宜
洪国强
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晨星半导体股份有限公司
晨星软件研发(深圳)有限公司
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Abstract

The invention discloses a very-low power consumption display control circuit and a relative method, which can save the power consumption of a display. The very-low power consumption display control circuit comprises a power conversion controller, a bias circuit, a first capacitor, a transformer, a second capacitor, a voltage stabilizer, an optical coupling component and a display controller. The very-low power consumption display control method comprises the following steps: sensing a direct current voltage level; using the display controller to control the magnitude of a coupling current of the optical coupling component to close the operation of the power conversion controller; and using the display controller to control the magnitude of the coupling current of the optical coupling component to start the operation of the power conversion controller.

Description

极低耗电显示控制电路与相关方法 The control circuit and related method very low power display

技术领域 FIELD

[0001] 本发明涉及显示器的耗电,尤其涉及一种极低耗电(Ultra-low power)显示控制电路与相关方法。 [0001] The present invention relates to power consumption of the display, in particular, it relates to a very low power consumption (Ultra-low power) and related method for controlling the display circuit.

背景技术 Background technique

[0002] 图1显示现有技术显示器内部的显示电路方块图100,包含电源电路110、缩放控制器120以及背光模块130,电源电路110经由交流电源112供电转换成适当电压114、 116,而分别供电给背光模块130及缩放控制器120的运作。 [0002] Figure 1 shows a prior art display to display an internal block diagram of a circuit 100, comprising a power supply circuit 110, a scaler 120 and a backlight module 130, a power supply circuit 110 converts AC power supply 112 via an appropriate voltage 114, 116, respectively operating power to the backlight module 130 and the scaler 120. 显示电路方块图100可以应用于计算机监视器(monitor)、模拟电视或者数字电视当中。 FIG display circuit block 100 may be applied to a computer monitor (monitor), a digital television or an analog television among. 在节能减碳的世界潮流中,众厂商皆致力于显示器于待机状态下的耗电量的节省,现有技术利用交流/直流转换(AC/DC conversion)的电源电路110进行省电。 In the world trend of carbon reduction in public companies are working on a display to save power consumption in the standby state, using the prior art AC / DC converter (AC / DC conversion) of the power supply circuit 110.

[0003] 因此十分殷切需要发展出一套可以低成本实现的极低耗电的显示电路与相关方法。 [0003] Thus the need to develop a very keen extremely low power consumption display circuit and related method can be realized at low costs.

发明内容 SUMMARY

[0004] 本发明所要解决的技术问题是提供一种极低耗电显示控制电路与相关方法,其能够节省显示器的耗电量。 [0004] The present invention solves the technical problem of providing a very low power display control circuit and related method, which can save power consumption of the display.

[0005] 为了解决以上技术问题,本发明提供了如下技术方案: [0005] In order to solve the above technical problem, the present invention provides the following technical solutions:

[0006] 本发明提供了一种极低耗电显示控制电路,包括电源转换控制器、偏压电路、第一电容、变压器、第二电容、稳压器以及显示控制器;偏压电路耦接至电源转换控制器,用以接收高压直流电压并产生直流偏压以供电电源转换控制器;第一电容耦接至电源转换控制器,用以稳定直流偏压;变压器耦接至电源转换控制器,用以将高压直流电压转换成直流电压;第二电容耦接至变压器,用以稳定直流电压;低压差线性变压器耦接至第二电容,用以接收直流电压并产生直流稳压输出;显示控制器耦接至稳压器,用以接收直流稳压输出而运作;以及光耦合组件耦接至显示控制器与偏压电路;显示控制器经由GPIO脚位控制光耦合组件的耦合电流的大小,使得光耦合组件透过偏压电路回授控制电源转换控制器的补偿脚位,而控制电源转换控制器的运作与否。 [0006] The present invention provides a very low power display control circuit includes a power conversion controller, the bias circuit, a first capacitor, a transformer, a second capacitor, regulator and a display controller; a bias circuit coupled to the power conversion controller, for receiving the high DC voltage and generates a DC bias power supply to the switching controller; a first capacitor coupled to the power conversion controller, for stabilizing the DC bias voltage; transformer coupled to the power conversion controller for converting a DC voltage into a high DC voltage; and a second capacitor is coupled to the transformer to stabilize the DC voltage; a low-dropout linear transformer coupled to the second capacitor for receiving the DC voltage and generates a DC output; Show the controller is coupled to a regulator for receiving the DC output operation; and an optical assembly coupled to the display controller coupled to the biasing circuit; current display controller controls the light coupling assembly is coupled via a GPIO pin size such that the light component transmitted through the bias circuit coupled feedback control compensation pin power conversion controller, the controller controls the operation of the power converter or not.

[0007] 本发明还提供了一种极低耗电显示控制电路,包括电源转换控制器、第一电容、变压器、第二电容、稳压器、显示控制器;第一电容耦接至该电源转换控制器;变压器耦接至该电源转换控制器,用以将一高压直流电压转换成一直流电压;第二电容耦接至该变压器, 用以稳定该直流电压;稳压器耦接至该第二电容,用以接收该直流电压并产生一直流稳压输出;显示控制器耦接至该稳压器,用以接收该直流稳压输出而运作;以及光耦合组件,耦接至该显示控制器;显示控制器藉由控制该光耦合组件的一耦合电流的大小,以控制该电源转换控制器的运作与否。 [0007] The present invention also provides a very low power display control circuit, a power converter comprising a controller, a first capacitor, a transformer, a second capacitor, regulator, display controller; the first capacitor is coupled to a power supply conversion controller; transformer coupled to the controller of the power converter for converting a high DC voltage into a DC voltage; and a second capacitor coupled to the transformer, for stabilizing the DC voltage; regulator coupled to the first two capacitors, for receiving the DC voltage and generates a DC voltage output; a display controller coupled to the regulator, to receive the DC output of the operation; and an optical coupling assembly, coupled to the display control ; a display controller by controlling the size of a light coupling assembly coupling current to control the operation of the power converter controller or not.

[0008] 本发明更提供了一种极低耗电显示控制方法,包括:感测直流电压位准;由显示控制器利用通用型输入输出脚位控制光耦合组件的耦合电流的大小,而控制电源转换控制器的补偿脚位的电位高低,以关闭电源转换控制器的运作,举例而言,显示控制器藉由发动通用型输入输出脚位的讯号而增加光耦合组件的耦合电流的大小,或者,显示控制器藉由将通用型输入输出脚位导通接地而增加该光耦合组件的该耦合电流的大小;以及显示控制器控制光耦合组件的耦合电流的大小,而启动该电源转换控制器的运作。 [0008] The present invention further provides an extremely low power consumption display control method comprising: sensing the DC voltage level; by the display controller using the general purpose input and output pins to control the size of the light coupling unit coupling current, and the control compensating a power converter controller pin potential level, to turn off the operation of the power conversion controller, for example, the signal launched by the display controller universal input-output pin coupled current increases the size of the light coupling assembly, Alternatively, the display controller by the general-purpose input-output pin and a ground conducting coupling current increases the size of the coupling component of the light; and a display controller coupled to control the current magnitude of the optical coupling unit, and start the power converter control the operation of the device. 然后,对第一电容与第二电容充电,例如充电到达一预定位准或者持续达一预定期间。 Then, charging the first capacitor and the second capacitor, for example, charging or reaches a predetermined level continues for a predetermined period. [0009] 本发明采用的极低耗电显示控制电路与相关方法,通过控制电源转换控制器的运作,能够节省显示器的耗电量,达到省电的目的。 [0,009] of the present invention uses very low power consumption display control circuit and associated method, by controlling the operation of the power conversion controller, the display can save power consumption, to save battery power.

附图说明 [0010] 图1显示现有技术显示器内部的显示电路方块图。 BRIEF DESCRIPTION [0010] Figure 1 shows a prior art display to display an internal circuit block of FIG. [0011] 图2显示根据本发明具体实施例的极低耗电显示控制电路。 [0011] FIG. 2 shows a very low power consumption in accordance with a particular embodiment of the present invention is a display control circuit. [0012] 图3显示相关于图2实施例的主要波形图。 [0012] FIG. 3 shows key waveforms associated with the embodiment of FIG. 2. [0013] 图4显示根据本发明另一具体实施例的极低耗电显示控制电路。 [0013] FIG. 4 shows a very low power consumption to another embodiment of the present invention a display control circuit. [0014] 图5显示根据本发明另一具体实施例的极低耗电显示控制电路。 [0014] FIG. 5 shows a very low power consumption according to another embodiment of the present invention a display control circuit. [0015] 图6显示根据本发明另一具体实施例的极低耗电显示控制电路。 [0015] FIG. 6 shows a very low power consumption to another embodiment of the present invention a display control circuit. [0016] 图7显示根据本发明具体实施例的极低耗电显示控制方法的流程图。 [0016] FIG. 7 shows a flowchart of a control method according to an embodiment of the extremely low power consumption of the present invention. [0017] 【主要组件符号说明】 [0018] 本案图式中所包含的各组件列示如下: [0019] 100显示电路方块图 112交流电源[0020] 110电源电路 114,116电压讯号[0021] 120缩放控制器 130背光模块[0022] 300、400、500显示控制电路 [0023] 302交流电源 310整流器[0024] 320、420偏压电路 330,530变压器[0025] 340,540电源转换控制器 342,542电流源[0026] 350、550稳压器 360缩放控制器[0027] 370、570光耦合组件 560显示控制器[0028] Fl熔丝 A、B节点[0029] NTC电阻 [0030] VDDP, VCC14V、VDD3V3、VCC5Vsense、COMP, HV、AC_0FF、DRV 讯号 [0031] Rll、R12、R13、R2、R4、R5、R6、R72 电阻[0032] D1、D21、D22、D3、D4、D5 二极管 [0033] Q1、Q2、Q3、Q4、Q8 晶体管 [0034] C1、C2、C3、C4 电容 [0017] The main components REFERENCE NUMERALS [0018] this case the components included in the figures are as follows: [0019] 100 circuit block diagram of a display 112 AC [0020] The power supply circuit 114, voltage signal 110 [0021] 120 Zoom The backlight module of the controller 130 [0022] 300, 400 display control circuit [0023] 302 AC rectifier 310 [0024] 320, 420, 330, 530 bias circuit of the transformer [0025] 340,540 342,542 current source power converter controller [0026] 350 , regulator 360 scaler 550 [0027] 370,570 light coupling unit 560 display controller [0028] Fl fuse A, B node [0029] NTC resistor [0030] VDDP, VCC14V, VDD3V3, VCC5Vsense, COMP, HV, AC_0FF, DRV signal [0031] Rll, R12, R13, R2, R4, R5, R6, R72 resistor [0032] D1, D21, D22, D3, D4, D5 diode [0033] Q1, Q2, Q3, Q4 , Q8 transistor [0034] C1, C2, C3, C4 capacitor

具体实施方式 detailed description

[0035] 图2显示根据本发明具体实施例的极低耗电显示控制电路300,交流电源302供应交流电压给经过整流器310,例如80至220伏交流电压;经过整流器310整流输出直流电压给偏压电路320与变压器(transformer) 330,例如是120至375伏直流电压,整流器310例如是全桥式整流器;经过偏压电路320偏压为直流电压讯号VDDP供电给电源转换控制器340运作,直流电压讯号VDDP例如是20伏直流电压,电源转换控制器340为模拟电路芯片,通常封装为八个脚位,由于成本考虑有脚位数量的限制。 [0035] Figure 2 shows a control circuit 300, the AC voltage to the AC power supply 302 through the rectifier 310, for example, 80 to 220 VAC power consumption according to a particular embodiment of the electrode of the present invention shows; output DC voltage rectified through the rectifier 310 to the bias dividing circuit 320 and the transformer (transformer) 330, for example 120 to 375 volts DC, for example, the rectifier 310 is a full bridge rectifier; bias supply 320 through the bias circuit to the power supply controller 340 converts the signal into the operating DC voltage VDDP, DC voltage signal VDDP example 20 volts DC, the power supply controller 340 converts an analog circuit chip, generally eight pin package, due to cost considerations have limited the number of pins. 变压器330利用线圈感应将其一次侧的高压直流电压转换成其它适当的直流电压于二次侧输出,供其它电路运作, 例如输出直流电压讯号VCC14V与VCC5V,分别提供14伏与5伏直流电压,14伏直流电压可供应背光模块的运作,例如冷阴极灯管或者发光二极管的背光模块的运作。 Transformer 330 using the inductive coil primary side of the high DC voltage which is converted into other suitable DC voltage output at the secondary side, for the operation of other circuits, for example, the output DC voltage signal VCC14V VCC5V, 14 are provided with 5 volts DC volts, 14 VDC supply operations of the backlight module may, for example, the operation of the backlight module cold cathode fluorescent lamp or a light emitting diode. 直流电压讯号VCC5V经过,稳压器;350,例如低压差线性稳压器(lowdrop-out regulator,简称LD0) 350, 稳压输出直流电压讯号3V3而供电给缩放控制器360的运作。 VCC5V DC voltage signal through the regulator; 350, for example, low-dropout linear regulator (lowdrop-out regulator, referred to the LD0) 350, the regulated output signal voltage DC power to the zoom operation 3V3 and the controller 360. 缩放控制器360根据变压器330输出的直流电压讯号VCC5V上的电压状况控制电源转换控制器340的运作,举例而言, 将直流电压讯号VCC5V经过电阻R5、R6的分压讯号VCC5Vsense送进缩放控制器360的逐步逼近缓存器模拟数字转换器(successive approximation ADC,简称SAR ADC)侦测直流电压讯号VCC5V上的电压状况,熟知此技艺人士可以了解逐步逼近缓存器模拟数字转换器是低成本可以实现的低速模拟数字转换器,或者,将分压讯号VCC5Vsense送进缩放控制器360的一比较器(未示出)与一参考电压,例如4伏,侦测直流电压讯号VCC5V上的电压状况;然后,缩放控制器360可利用通用型输入输出(general purposel/O,简称GPI0)脚位经过光耦合组件(opto-coupler或称photocoupler) 370控制电源转换控制器340的补偿脚位C0MP,回授控制电源转换控制器340的开启运作时机,达到极低耗电的目的。 The zoom controller 360 controls the DC voltage condition of the transformer 330 outputs a voltage signal VCC5V power converter operation controller 340, for example, the DC voltage signal VCC5V through resistor R5, a signal dividing VCC5Vsense R6 feeding scaler 360 successive approximation register analog-to-digital converter (successive approximation ADC, abbreviated SAR ADC) detects the voltage condition on the DC voltage signal VCC5V, well known in this art who can understand the successive approximation register analog-digital converter is a low cost can be achieved low-speed analog to digital converter, or the partial pressure of the feed signal scaler VCC5Vsense a comparator 360 (not shown) and a reference voltage, for example, 4 volts, the detection voltage condition on the DC voltage signal VCC5V; then, scaler 360 may utilize general-purpose input-output (general purposel / O, abbreviated GPI0) via light coupling pin assembly (opto-coupler or said photocoupler) 370 controls the power converter controller pin 340 to compensate C0MP, power feedback control conversion to open operation of the timing controller 340, to achieve extremely low power consumption purposes. 应注意到,熟知此技艺人士可以了解电源转换控制器340为模拟电路芯片,通常封装为八个脚位, 其中补偿脚位COMP于电源转换控制器340内部提供有电流源342,例如为200微安培(μ A) 的电流源。 It should be noted, well known in this art who can understand the power controller 340 to convert the analog circuit chip, generally eight pin package, wherein the compensation pin COMP is provided with a current source 342 to the internal power converter controller 340, for example 200 microns ampere (μ a) of the current source. 偏压电路320包括电阻Rl 1、Rl2、Rl3、二极管D21、D22、晶体管Q1、Q2、Q3。 The bias circuit 320 includes a resistor Rl 1, Rl2, Rl3, diodes D21, D22, transistors Q1, Q2, Q3. 偏压电路320利用电阻Rll、R12、晶体管Ql路径将高压直流电压偏压为直流电压讯号VDDP供电给电源转换控制器340运作。 The bias circuit 320 using resistors Rll, R12, transistor Ql path high DC voltage bias to the power supply controller 340 converts the operating signal into a DC voltage VDDP.

[0036] 电源转换控制器340利用电容器Cl所储存的电荷,于晶体管Ql关闭而停止供电时,可以短暂供应电源转换控制器340的运作,但是,熟知此技艺人士可以了解电容器Cl亦关系到电源启动时,真正开始供应正常直流电压运作所需要的时间,所以电容器Cl也不能太大,例如为22微法拉(yF)。 [0036] The power converter controller 340 using the charge stored in the capacitor Cl, the transistor Ql off and when the power supply is stopped, power supply may be a short operation converting controller 340, however, well known in this art can understand who is also related to the power supply capacitor Cl At startup, the real start time of the normal DC supply voltage required for operation, the capacitor Cl can not be too large, for example 22 microfarads (yF). 而缩放控制器360则可以利用电容器C2,于切断电源时,可以短暂供应缩放控制器360的运作,典型地电容器C2相当大,例如为2000微法拉(μ F),应注意到电容器C2可提供的储存电力远较电容器Cl大。 The controller 360 may be scaled by the capacitor C2, at the time of cutting the power supply may be a short operating scaler 360, capacitor C2 is typically quite large, for example 2000 microfarads (μ F), should be noted that the capacitor C2 can provide far more power storage capacitors Cl large.

[0037] 图2所显示的极低耗电显示控制电路300,在关闭系统电源后,利用电容器C2短暂供电于缩放控制器360的运作,经过稳压器350稳压输出直流电压讯号3V3而供电给缩放控制器360的运作,只要直流电压讯号VCC5V经过稳压器350稳压输出的直流电压讯号3V3 高于缩放控制器360的工作电压的状况下,皆可运作缩放控制器360,稳压器350的耗电量极低,并使得直流电压讯号VCC5V与直流电压讯号3V3间的电压降LDODrop极小。 [0037] FIG. 2 pole low power consumption displayed by the display control circuit 300, after turning off the system power supply by the capacitor C2 short controller 360 to the scaling operation, the regulator 350 through the regulated output DC voltage signal and supply 3V3 a zoom operation of the controller 360, as long as the DC voltage of the DC voltage signal through the signal VCC5V regulator 350 is higher than 3V3 regulated output voltage controller 360 the zooming operation condition, the controller 360 will work as scaling, Regulators 350 power consumption is very low, so that the DC voltage signal and the DC voltage signal VCC5V LDODrop minimal voltage drop between 3V3. 假设缩放控制器360的工作电压为3. 3伏,经由电容器C2逐渐放电,只要直流电压讯号VCC5V超过(3. 3伏+LDODrop),皆可使缩放控制器360运作。 Suppose the operating voltage scaler 360 is 3.3 volts, gradually discharged via the capacitor C2, as long as the DC voltage signal exceeds VCC5V (3.3 volts + LDODrop), the controller 360 Jieke zoom operation.

[0038] 在关闭系统电源后,缩放控制器360利用GPIO脚位送出讯号AC_0FF将缩放控制器360的电压状态,经由电阻R4以及光耦合组件370反应给电源转换控制器340端以汲取电流,电源转换控制器340则利用补偿脚位COMP使电流源342经由电阻R13、二极管D21、D22与晶体管Q3供应此电流,举例而言,光耦合组件370的电流转换比例(currenttransfer ration,简称CTR)为1 : 1,则光耦合组件370两侧所汲取的电流为1 : 1,讯号AC_ OFF的发动(assertion)期间相关于直流电压讯号VCC5V的位准。 [0038] After the system is powered off, the zoom controller 360 sends signals using GPIO pin AC_0FF scaled voltage state controller 360 via a resistor R4, and the light coupling assembly 370 to the power converter reactor to draw current terminal of the controller 340, power supply conversion controller 340 using the compensation pin COMP of the current source 342 via the resistor R13, diodes D21, D22 and the transistor Q3 supplies this current, for example, the light coupling assembly 370 of the current conversion ratio (currenttransfer ration, abbreviated CTR) of 1 : 1, the light coupling assembly 370 on both sides of the current drawn to 1: 1, the signal launched AC_ OFF signal related to the DC voltage VCC5V period (the assertion) level. 当电源转换控制器340 于补偿脚位COMP感测到缩放控制器360的电压低于一预定位准时,短暂驱动讯号DRV以打开晶体管Q4,短暂启动变压器330的一次侧汲取外部电源,以对电容Cl充电以及对变压器330的二次侧的大电容C2充电,以供下个循环期间缩放控制器360的运作。 When the power conversion controller 340 for compensating the measured sense COMP pin to the scaled voltage controller 360 is lower than a predetermined bit-time, a short drive signal DRV to open the transistors Q4, a short starter transformer primary side draw external power source 330 to the capacitor large capacitors Cl and C2 for charging the secondary side of the transformer 330 of the charging operation of the controller 360 for zooming during the next cycle. 图2中箭头方向标示出几个电路分析中的主要电流流向,使得熟知此技艺人士可以更了解本实施例的运作。 Direction of an arrow indicated in FIG. 2 illustrating several main current flows in circuit analysis, well known in this art so that more people can understand the operation of the present embodiment.

[0039] 对于电源转换控制器340,当发动讯号AC_0FF时,例如为高位准,光耦合组件370 产生耦合电流,经由节点A、二极管D21、D22与光耦合组件370汲取所需的耦合电流,使得晶体管Q3的基极电压下降,导通晶体管Q3与二极管D21、D22,使得补偿脚位COMP上电压下降,关闭晶体管Q2,使得晶体管Ql的基极电位下降而关闭晶体管Ql ;晶体管Q3具有电流放大的作用,可以加速电流源342的放电速度,如果电源转换控制器340内的电流源342 的电流能力低,则可以省掉晶体管Q3,直接靠二极管D22进行放电。 [0039] For the power conversion controller 340, when the engine signal AC_0FF, for example, at a high level, the light coupling assembly 370 is coupled to generate a current through nodes A, diodes D21, D22 and the light coupling assembly 370 is coupled to draw the required current, such that transistor Q3 base voltage drop, turns on the transistor Q3 and the diode D21, D22, such that the compensation pin COMP voltage decreases, turning off the transistor Q2, the transistor Ql base potential drop and turns off transistor Ql; transistor Q3 having a current amplification effect, can accelerate the discharge rate of current source 342, the current capability is low if the current source in the power supply controller 340 converts 342, you can reduce the transistor Q3, the diode D22 by direct discharge. 另一方面,当解除讯号AC_0FF时,例如为低位准,无感应电流产生,导通晶体管Ql而对电容Cl充电,然后补偿脚位COMP上电压逐渐上升,导通晶体管Q2,使得晶体管Ql的基极接地而关闭晶体管Q1,使得电源转换控制器340使用电容Cl所储存的电力,使得电容Cl放电;因此,藉由讯号AC_0FF的发动与否控制电源转换控制器340运作与否,以控制电容Cl充电、放电循环运作。 On the other hand, when the signal is released AC_0FF, for example, a low level, no induced current, transistor Ql is turned on to charge the capacitor Cl, and then the compensation pin COMP voltage gradually rises, turning on transistor Q2, the base of the transistor Ql closed-grounded transistor Q1, so that the power conversion controller 340 using the power stored in the capacitor Cl is such that capacitor Cl discharges; Thus, by controlling whether or not the signal AC_0FF launch power converting operation controller 340 or not to control the capacitance Cl charge and discharge cycle operation.

[0040] 图3显示关于图2的极低耗电显示控制电路300的主要波形图,包括讯号AC_0FF、 电压讯号VDDP、讯号DRV、电压讯号VCC5V、感测讯号VCC5Vsense之间的波形关系图。 [0040] Figure 3 shows very low power consumption with respect to FIG. 2 waveform diagram of the main display control circuit 300, including the relationship between a waveform signal AC_0FF, VDDP voltage signal, the signal DRV, VCC5V voltage signal, the sensing signal VCC5Vsense. 配合图2的极低耗电显示控制电路300进行说明,于此实施例中,讯号AC_0FF拉高之后,透过二极管D21、D22与光耦合组件370快速地强迫电源转换控制器340内的电流源342放电拉低电位并关闭晶体管Q1,强迫切断外部电源对电源转换控制器340的供电,且电压讯号VDDP被快速的拉低,持续维持在0伏一段相当长的时间,达到省电的目的。 FIG 2 with very low power display control circuit 300 will be described, in this embodiment, after signal AC_0FF pulled through the diodes D21, D22 and the light coupling assembly 370 quickly forcing the current source in the power conversion controller 340 342 down discharge potential and turn off the transistor Q1, to force off the external power supply to the power conversion controller 340, and the voltage signal VDDP is rapidly pulled down, continuously maintained at 0 volts for a considerable period of time, to save battery power. 讯号AC_0FF拉低之后,开启晶体管Q1,对电容Cl充电,使得电压讯号VDDP快速上升,到达最高的电压后, 例如20伏,补偿脚位COMP上电压上升到预定位准,电源转换控制器340短暂地发动讯号DRV,例如由电源转换控制器340内的脉波宽度调变(pulsewidth modulation,简称PWM) 控制器短暂地产生高低位准宽度调变的讯号DRV,或者由脉波频率调变(pulse frequency modulation,简称PFM)控制器产生频率不同的讯号DRV,短暂地导通晶体管Q4,使得变压器330的一次侧短暂导通对电容Cl充电以及对二次侧的大电容C2充电,例如将电压讯号VCC5V快速地拉升到5伏,其可藉由与一比较器与一参考电压比较达成,或者例如对二次侧的大电容C2充电一预定期间;只要在电压讯号VCC5V放电到预定电压之前,缩放控制器360皆可正常运作监控感测讯号VCC5Vsense的变化,如此持续循环运作,举例而言,只要确 After the signal AC_0FF down, turn the transistor Q1, the charge on the capacitor Cl, so that the voltage signal VDDP rapid increase, reached the highest voltage, for example 20 volts, the compensation COMP pin voltage rises to a predetermined level, the power converter controller 340 short signal DRV to launch, for example, a pulse width modulation in the power conversion controller 340 (pulsewidth modulation, referred to as PWM) controller for generating the signal DRV transiently low level width modulation, or a pulse frequency modulation (pulse frequency modulation, referred to as PFM) controller generates different frequency signals DRV, briefly turn on the transistor Q4, so that the primary side of the transformer 330 is briefly turned on charging the capacitor Cl and the secondary side of the large charging capacitor C2, the voltage signal e.g. VCC5V quickly pulled up to 5 volts, which may be by a comparator with a reference voltage to reach, for example, large or the secondary-side capacitor C2 is charged a predetermined period; just prior to discharge to a predetermined voltage in the voltage signal VCC5V, scaler 360 can operate normally monitoring changes in the sensing signal VCC5Vsense, thus continuing the cycle operation, for example, as long as the correct 整个过程当中电压讯号VCC5V皆大于(3. 3伏+电压降LDODrop),即可正常运作。 The whole process are greater than the voltage signal VCC5V (+ 3.3 V voltage drop LDODrop), to work properly. 感测讯号VCC5Vsense则显示对应电压讯号VCC5V的充放电变化。 VCC5Vsense sensing signal corresponding to the display discharge voltage signal VCC5V changes. 应注意到,电压讯号VDDP持续维持在0伏一段相当长的时间,使得讯号DRV的驱动期间相隔很远,可以完全隔绝外部电源的消耗,达到极低耗电的目的,经过电路仿真,总电力消耗约可达150毫瓦(mW)以下,而实际需要支出的额外成本甚低,兼顾成本与效能两者的考虑。 It should be noted, voltage signal VDDP continuously maintained at 0 volts for a considerable period of time, so far apart during the driving signal DRV may be completely isolated from the external power consumption, providing a very low power consumption purposes, through the circuit simulation, the total power consumption of up to about 150 milliwatts (mW) or less, and the extra cost of the actual needs of expenditure is very low, taking into account both cost and performance considerations. 本实施例中其它辅助组件的运作,例如熔丝F1、负温系数电阻NTC、电阻R2、电容C4等等,可以为熟知此技艺人士所了解便不再赘述。 Other ancillary components operating in the present embodiment, for example, a fuse F1, the NTC negative temperature coefficient of resistance, the resistor R2, capacitor C4, etc., are well known in this art may be appreciated by persons not repeated. [0041 ] 图4显示根据本发明另一具体实施例的极低耗电显示控制电路400,相较于图2的实施例的差异在于偏压电路420,利用电阻R18提供偏压控制,并省略晶体管Q3,而最右端则显示来自个人计算机的5伏讯号PC5V可以透过二极管D6耦接于电压讯号VCC5V,对电容C2充电;而缩放控制器360也可被广泛整合于显示控制器(display controller),应用于模拟电视与数字电视,并不跳脱本发明的范畴。 [0041] Figure 4 shows a very low power consumption in accordance with another embodiment of the present invention a display control circuit 400, the difference compared to the embodiment of Figure 2 in that the bias circuit 420 provides bias control by the resistor R18, and will not be transistors Q3, while the far right is displayed PC5V 5 volt signal from the personal computer can be connected to a voltage signal VCC5V coupled through diode D6, the capacitor C2 is charged; the scaler 360 may also be widely integrated controller (display controller displays ), is applied to an analog television and digital television, not escape the scope of the invention.

[0042] 图5显示根据本发明另一具体实施例的极低耗电显示控制电路500,其主要系源自图2实施例的概念。 [0042] FIG. 5 shows a very low power consumption according to another embodiment of the present invention a display control circuit 500, which is mainly derived from the concept of the embodiment of FIG. 类似的讯号亦采用前面讯号的标号,有助于了解本实施例的运作。 Similar reference signal preceding signals also employed, helps to understand the operation of the present embodiment. 主要差异在于电源转换控制器540整合了图2中偏压电路320的类似组件,而显示控制器560直接侦侧电压讯号VDD3V3,节省逐步逼近缓存器模拟数字转换器或者比较器的脚位; 如前面实施例所揭示,由显示控制器560侦侧电压讯号VDD3V3的变化,举例而言,确保侦侧电压讯号VDD3V3高于3. 3伏。 The main difference is that the power conversion controller 540 incorporates similar components of the bias circuit 320 in FIG. 2, the display controller 560 and a direct-voltage signal The VDD3V3 after checking, savings successive approximation register analog-to-digital converter or a comparator pin; as Example foregoing disclosed embodiment, the display controller 560 changes the voltage detect signal VDD3V3 side of, for example, to ensure that after checking voltage signal VDD3V3 than 3.3 volts. 举例而言,在电压讯号VDD3V3高于3. 3伏前,可由显示控制器560利用GPIO脚位发动讯号AC_0FF,经由光耦合组件570、补偿脚位COMP令电源转换控制器540停止汲取外部电源;在电压讯号VDD3V3快落到3. 3伏前,由显示控制器560解除讯号AC_0FF,电源转换控制器540藉由打开内部开关(未示出)经由高压电源脚位HV由节点B短暂地汲取外部电源,使得电源转换控制器MO内部的受控电流源M2,经由电压讯号VDDp'对电容Cl充电,短暂地驱动讯号DRV,启动变压器530的一次侧,使得变压器530对电容Cl充电以及对二次侧的大电容C2充电达一预定电压或者充电一预定期间。 For example, before the voltage signal VDD3V3 higher than 3.3 volts, the controller 560 by the display engine using a pin GPIO signal AC_0FF, power draw external light coupling assembly 570, the compensation pin COMP command controller 540 to stop via the power converter; in the voltage signal falls faster VDD3V3 3.3 volts before, the display controller 560 by a signal released AC_0FF, power converter controller 540 by opening an internal switch (not shown) momentarily drawn by the node B via an external high voltage power source HV pin power supply, so that the controlled current source the internal power conversion controller M2 MO, 'charging the capacitor Cl via a voltage signal VDDP, briefly driving signals DRV, primary side of the trigger transformer 530, so that the transformer 530 for charging the capacitor Cl and the secondary large capacitor C2 side is a predetermined charging voltage or a charging of a predetermined period. 电源转换控制器540长时间地切断外部电源,可以大幅降低牦电。 The power converter controller 540 off for a long time the external power supply, can significantly reduce the electrical Yak. 箭头方向标示出几个电路分析中的主要电流流向,使得熟知此技艺人士可以更了解本实施例的运作。 Arrows showing the direction of the main current flows in the circuit analysis of several such sources are well known in this art may better understand the operation of the present embodiment.

[0043] 根据以上诸多实施例的揭示,熟知此技艺人士可以做出许多可能变化,仍不跳脱本发明的范畴。 [0043] According to the above disclosed embodiment the many, known to those in this art can make many variations possible, still escape the scope of the invention. 举例而言,显示控制器560利用GPIO脚位控制讯号AC_0FF,经由电阻R4、光耦合组件570,回授控制补偿脚位C0MP,而控制电源转换控制器540是否汲取外部电源,可以有其它变化的可能,举例而言,可以修改光耦合组件570附近的电路,使得讯号AC_0FF的高低位准相对于电源转换控制器540的运作相反;或者,搭配辅助电路使得GPIO脚位间接控制光耦合组件570汲取电流的运作;或者,以上诸多实施例是由GPIO脚位输出控制讯号AC_0FF的位准,藉由修改光耦合组件570附近的电路,可使得GPIO脚位为输入方式运作,如图6所示,光耦合组件570经由电阻R72耦接于显示控制器560的GPIO脚位,经由晶体管Q8控制是否导通放电,当控制讯号CTRL被发动,导通晶体管Q8,于讯号COMP引发电源转换控制器540类似前述实施例的运作。 For example, the display controller 560 using a control signal GPIO pin AC_0FF, via the resistor R4, the light coupling assembly 570, the feedback control compensation pin C0MP, the controller 540 controls the power converter is drawing external power source, there can be other variations may, for example, modification of the circuit may be close to the light coupling assembly 570, such that the low level signal with respect to an opposite AC_0FF power converting operation of the controller 540; or, with the auxiliary circuit so that the GPIO pin indirectly controls the light coupling assembly 570 to draw operating current; or, many more embodiments are level by a control signal output GPIO pin of AC_0FF, by modifying the circuit close to the light coupling unit 570, so that the GPIO pin can be input into the operating mode, shown in Figure 6, light coupling assembly 570 is coupled via a resistor R72 to the display controller 560 of the GPIO pins, whether conduction control transistor Q8 via discharge, when the control signal CTRL is launched, the transistor Q8 is turned on, the signal COMP to initiate a power converter controller 540 is similar to operation of the foregoing embodiment.

[0044] 图7显示根据本发明具体实施例的极低耗电显示控制方法的流程图。 [0044] FIG. 7 shows a flowchart of a control method according to an embodiment of the extremely low power consumption of the present invention. 于步骤702, 感测变压器二次侧的直流电压位准,举例而言,可以感测图2中讯号VCC5V的变化,或者直接感测讯号VDD3V3的变化,举例而言,确保讯号VDD3V3皆高于3. 3伏;于步骤704,显示控制器藉由GPIO脚位导通光耦合组件,控制电源转换控制器的补偿脚位,而关闭电源转换控制器的运作,举例而言,如图5所示,显示控制器560可藉由GPIO脚位发动讯号AC_0FF增加光耦合组件570的耦合电流的大小,而关闭电源转换控制器MO的运作,或者,如图6所示,光耦合组件570耦接于显示控制器560的GPIO脚位,藉由晶体管Q8形成放电路径,而关闭电源转换控制器MO的运作;于步骤706,当直流电压位准下降到达一预定位准时,经由GPIO脚位降低光耦合组件的耦合电流的大小,控制电源转换控制器的补偿脚位,而启动电源转换控制器的运作;于步骤708,短暂导通变压器的一次侧,对第 In step 702, the sense transformer secondary side DC voltage level sensing, for example, may sense a change in the signal 2 VCC5V FIG measured, or directly sensing variation signal VDD3V3 of, for example, to ensure that signals are higher than VDD3V3 3.3 V; at step 704, the display controller GPIO pins by conducting the light coupling assembly, the power control compensation pin conversion controller, turn off the operation of the power conversion controller, for example, in FIG. 5 shown, the display controller 560 may be launched by GPIO pin coupling current signal AC_0FF increase the size of an optical coupling assembly 570, and operating the power conversion controller MO off, or, shown in Figure 6, the light coupling assembly 570 is coupled GPIO pin to the display controller 560, a discharging path formed by the transistor Q8, and the off operation of the power conversion controller MO; at step 706, when the DC voltage drop reaches a predetermined level position on time, reducing the light via the GPIO pin coupling current magnitude of the coupling assembly, the power conversion control compensation pin controller, the controller starts the operation of the power converter; at step 708, the primary side of the transformer is turned on briefly, the first 电容与第二电容短暂充电,举例而言,如图5所示,藉由脉波宽度调变或者脉波频率调变控制晶体管Q4的闸极,使得变压器530对第一电容Cl与二次侧的第二电容C2充电。 Transient charging capacitor and the second capacitor, for example, shown in Figure 5, by pulse width modulation or pulse frequency modulation control gate of the transistor Q4 is, 530 pairs of the transformer and the secondary side of the first capacitor Cl the second capacitor C2 is charged.

[0045] 综上所述,本发明揭示一种极低耗电显示控制电路,包括电源转换控制器、偏压电路、第一电容、变压器、第二电容、稳压器以及显示控制器;偏压电路耦接至电源转换控制器,用以接收高压直流电压并产生直流偏压以供电电源转换控制器;第一电容耦接至电源转换控制器,用以稳定直流偏压;变压器耦接至电源转换控制器,用以将高压直流电压转换成直流电压;第二电容耦接至变压器,用以稳定直流电压;低压差线性变压器耦接至第二电容,用以接收直流电压并产生直流稳压输出;显示控制器耦接至稳压器,用以接收直流稳压输出而运作;以及光耦合组件耦接至显示控制器与偏压电路;显示控制器经由GPIO脚位控制光耦合组件的耦合电流的大小,使得光耦合组件透过偏压电路回授控制电源转换控制器的补偿脚位,而控制电源转换控制器的运 [0045] In summary, the present invention discloses an extremely low power consumption display control circuit includes a power conversion controller, the bias circuit, a first capacitor, a transformer, a second capacitor, regulator and a display controller; Partial voltage conversion circuit coupled to the power controller, for receiving the high DC voltage and generates a DC bias power supply to the switching controller; a first capacitor coupled to the power conversion controller, for stabilizing the DC bias voltage; transformer coupled to power conversion controller for converting a DC voltage into a high DC voltage; and a second capacitor is coupled to the transformer to stabilize the DC voltage; a low-dropout linear transformer coupled to the second capacitor for receiving the DC voltage and generates a DC stabilized pressure output; the display controller is coupled to the regulator to receive the operating DC output; and an optical assembly coupled to the display controller coupled to the biasing circuit; display controller controls the light coupling assembly via a pin GPIO coupling current magnitude so that the light transmitted through the coupling assembly bias compensation feedback circuit controls the power conversion controller pin, and the control operation of the power conversion controller 与否。 Or not. 举例而言,显示控制器可为缩放控制器,电源转换控制器可包含脉波宽度调变控制器或者脉波频率调变控制器。 For example, the display controller may be a scaler, a power converter controller may comprise pulse width modulation control or pulse frequency modulation controller. 熟习此技艺的人士可以做出其它可能变化,举例而言,将偏压电路的功能整合至电源转换控制器中,则显示控制器经由GPIO脚位控制光耦合组件的耦合电流的大小,使得光耦合组件透直接回授控制电源转换控制器的补偿脚位,而控制电源转换控制器的关闭或启动,无需经由辅助的偏压电路。 Those skilled in this art may be made other possible variations, for example, the integration of the bias circuit to the power conversion controller, the display controller controls the magnitude of the current is coupled via an optical coupling unit GPIO pin, so that the light through direct coupling assembly pin compensation feedback controls the power conversion controller, the controller controls the power converter startup or shutdown, without going through an auxiliary bias circuits. 或者,熟习此技艺者可以将变压器的二次侧的输出电压修改为3. 3伏,而省略稳压器组件,仍不跳脱本发明的发明范畴。 Alternatively, those skilled in this art may be the output voltage of the secondary side of the transformer is modified to 3.3 volts, the regulator assembly is omitted, the invention is still not escape the scope of the invention.

[0046] 本发明更揭示一种极低耗电显示控制方法,包括:感测直流电压位准;由显示控制器利用通用型输入输出脚位控制光耦合组件的耦合电流的大小,而控制电源转换控制器的补偿脚位的电位高低,以关闭电源转换控制器的运作,举例而言,显示控制器藉由发动(assert)通用型输入输出脚位的讯号而增加光耦合组件的耦合电流的大小,或者,显示控制器藉由将通用型输入输出脚位导通接地而增加该光耦合组件的该耦合电流的大小;以及显示控制器控制光耦合组件的耦合电流的大小,启动该电源转换控制器的运作,举例而言, 显示控制器藉由解除(deassert)通用型输入输出脚位的讯号而减少光耦合组件的耦合电流的大小,而启动该电源转换控制器的运作。 [0046] The present invention further discloses an extremely low power consumption display control method comprising: sensing the DC voltage level; by the display controller using the general purpose input output pin coupled to control the current magnitude of the optical coupling unit, and the control power supply conversion compensation pin of the potential level of the controller, to turn off the operation of the power conversion controller, for example, the display controller by the engine (Assert) general-purpose input and output signal pins increases the light coupling unit coupling the current size, or the display controller by the general-purpose input-output pin and a ground conducting coupling current increases the size of the coupling component of the light; and a display controller coupled to control the current magnitude of the optical coupling unit, the power converter starts the operation of the controller, for example, by releasing the display controller (deassert) general-purpose input and output signal pins of the coupling current and reduce the size of the optical coupling unit, and start the operation of the power converter controller. 然后,对第一电容与第二电容充电,例如充电到达一预定位准或者持续达一预定期间。 Then, charging the first capacitor and the second capacitor, for example, charging or reaches a predetermined level continues for a predetermined period.

[0047] 综上所述,虽然本发明已以较佳实施例揭露如上,然其并非用以限定本发明。 [0047] Although the present invention has been disclosed above by the preferred embodiments, they are not intended to limit the present invention. 任何熟习此技艺者,在不脱离本发明的精神和范围内,当可作各种更动与润饰,本发明的保护范围应当以权利要求为准。 Any person skilled in this art, without departing from the spirit and scope of the present invention, when the various changes or modifications may be made, the scope of the present invention should be claims.

9 9

Claims (15)

  1. 1. 一种极低耗电显示控制电路,其特征在于,它包括: 一电源转换控制器;一偏压电路,耦接至该电源转换控制器,用以接收一高压直流电压并产生一直流偏压以供电该电源转换控制器;一第一电容,耦接至该电源转换控制器,用以稳定该直流偏压;一变压器,耦接至该电源转换控制器,用以将该高压直流电压转换成一直流电压;一第二电容,耦接至该变压器,用以稳定该直流电压;一稳压器,耦接至该第二电容,用以接收该直流电压并产生一直流稳压输出;一显示控制器,耦接至该稳压器,用以接收该直流稳压输出而运作;以及一光耦合组件,耦接至该显示控制器与该偏压电路;一分压电路,耦接至该第二电容,接收该直流电压产生一感测电压给该显示控制器; 其中,该电源转换控制器短暂导通一晶体管以短暂启动该变压器对该第一电容与该 An extremely low power consumption display control circuit, characterized in that it comprises: a power converting controller; a bias circuit coupled to the power conversion controller, for receiving a high DC voltage and generating a DC bias power to the power converter controller; a first capacitor coupled to the power conversion controller, for stabilizing the DC bias voltage; a transformer coupled to the power conversion controller for the HVDC voltage into a DC voltage; a second capacitor coupled to the transformer, for stabilizing the DC voltage; a regulator, coupled to the second capacitor for receiving the DC voltage and generating a DC voltage output ; a display controller, coupled to the regulator, to receive the DC output of the operation; and a light coupling element coupled to the display controller and the biasing circuit; a voltage divider circuit coupled connected to the second capacitor, receiving the DC voltage generating a sensing voltage to the display controller; wherein the power converter is turned on a short control transistors to short the start of the first capacitor and the transformer 二电容充电,该显示控制器藉由控制该光耦合组件的一耦合电流的大小,使得该光耦合组件透过该偏压电路回授控制该电源转换控制器的一补偿脚位,以控制该电源转换控制器的运作与否。 Two charging capacitors, the size of the display controller controls the light by coupling a coupling component of the current, so that the light coupling assembly is transmitted through the feedback control circuit is a bias compensation pin of the power converter controller, to control the the operation of the power conversion controller or not.
  2. 2.如权利要求1所述的极低耗电显示控制电路,其特征在于,其中该光耦合组件耦接至该显示控制器的一通用型输入输出脚位,该显示控制器经由该通用型输入输出脚位控制该光耦合组件的该耦合电流的大小。 Extremely low power consumption as claimed in claim 1, the display controller through the general-purpose display requires a control circuit, wherein the light coupling assembly is coupled to a general purpose input-output pin of the display controller, size of the input output pin control the light coupling assembly coupling the current.
  3. 3.如权利要求1所述的极低耗电显示控制电路,其特征在于,其中该稳压器为一低压差线性稳压器。 Extremely low power consumption as claimed in claim 1, said display control circuit, wherein the regulator is a low-dropout linear regulator.
  4. 4. 一种极低耗电显示控制电路,其特征在于,它包括: 一电源转换控制器;一第一电容,耦接至该电源转换控制器;一变压器,耦接至该电源转换控制器,用以将一高压直流电压转换成一直流电压; 一第二电容,耦接至该变压器,用以稳定该直流电压; 一稳压器,耦接至该第二电容,用以接收该直流电压并产生一直流稳压输出; 一显示控制器,耦接至该稳压器,用以接收该直流稳压输出而运作;以及一光耦合组件,耦接至该显示控制器;其中,该电源转换控制器短暂导通一晶体管以短暂启动该变压器对该第一电容与该第二电容充电;该显示控制器藉由控制该光耦合组件的一耦合电流的大小,以控制该电源转换控制器的运作与否,该显示控制器直接侦测该稳压器的直流稳压输出。 A very low power display control circuit, characterized in that it comprises: a power converting controller; a first capacitor coupled to the power conversion controller; a transformer coupled to the power conversion controller for converting a high DC voltage into a DC voltage; a second capacitor coupled to the transformer, for stabilizing the DC voltage; a regulator, coupled to the second capacitor for receiving the DC voltage and generating a DC voltage output; a display controller, coupled to the regulator, to receive the DC output of the operation; and a light coupling assembly, coupled to the display controller; wherein the power supply a switching controller transistor is turned on to short transient start charging the capacitor of the first transformer and the second capacitor; size by the display controller controls the light coupling unit coupling a current controller to control the power converter operation or not, the display controller detects a direct DC output of the regulator.
  5. 5.如权利要求4所述的极低耗电显示控制电路,其特征在于,其中该显示控制器藉由控制该光耦合组件的该耦合电流的大小,而控制该电源转换控制器的一补偿脚位的电位高低,而控制该电源转换控制器的关闭或启动。 5. The electrode as claimed in claim 4, wherein the low power consumption display control circuit, wherein the display controller by a compensating light coupling assembly to control the size of the coupling current, and the control of the power converter controller pin potential level, and controls the power conversion controller shut down or start.
  6. 6.如权利要求4所述的极低耗电显示控制电路,其特征在于,其中该光耦合组件耦接至该显示控制器的一通用型输入输出脚位,该显示控制器经由该通用型输入输出脚位控制该光耦合组件的该耦合电流的大小。 6. The electrode as claimed in claim 4, wherein the low power consumption display control circuit, wherein the light coupling assembly is coupled to a general purpose input-output pin of the display controller, the display controller through the general-purpose size of the input output pin control the light coupling assembly coupling the current.
  7. 7. 一种极低耗电显示控制电路,其特征在于,它包括: 一电源转换控制器;一第一电容,耦接至该电源转换控制器;一变压器,耦接至该电源转换控制器,用以将一高压直流电压转换成一直流电压;一第二电容,耦接至该变压器,用以稳定该直流电压;一显示控制器,耦接至该第二电容,用以接收该直流电压而运作;以及一光耦合组件,耦接至该显示控制器;一分压电路,耦接至该第二电容,接收该直流电压产生一感测电压给该显示控制器,或显示控制器直接侦测第二电容稳定的直流电压讯号;其中,其中该电源转换控制器短暂导通一晶体管以短暂启动该变压器对该第一电容与该第二电容充电;该显示控制器藉由控制该光耦合组件的一耦合电流的大小,以控制该电源转换控制器的运作与否。 A very low power display control circuit, characterized in that it comprises: a power converting controller; a first capacitor coupled to the power conversion controller; a transformer coupled to the power conversion controller for converting a high DC voltage into a DC voltage; a second capacitor coupled to the transformer, for stabilizing the DC voltage; a display controller, coupled to the second capacitor for receiving the DC voltage the operation; and a light coupling assembly, coupled to the display controller; a dividing circuit, coupled to the second capacitor, receiving the DC voltage generating a sensing voltage to the display controller, the display controller or directly detecting a second capacitance stable DC voltage signal; wherein, wherein the power converter is turned on a short control transistor of the transformer to short start charging the first capacitor and the second capacitor; by the display controller controls the light a coupling current magnitude of the coupling assembly to control operation of the power converter controller or not.
  8. 8. 一种极低耗电显示控制方法,其特征在于,它包括:感测一直流电压位准;藉由一显示控制器控制一光耦合组件的一耦合电流的大小,以关闭一电源转换控制器的运作;短暂导通一变压器的一次侧,而对一第一电容与一第二电容充电;以及该显示控制器控制该光耦合组件的耦合电流的大小,以启动该电源转换控制器的运作,该第一电容耦接至电源转化控制器,该第二电容耦接至变压器二次侧。 A very low power consumption display control method, characterized in that it comprises: sensing the DC voltage level; by a display controller coupled to a current magnitude of a light coupling assembly to turn off a power converter the operation of the controller; transient conduction of the primary side of a transformer, while a first capacitor charged with a second capacitor; and a display controller coupled to control the current magnitude of the light coupling assembly to start the power converter controller operation, the first capacitor coupled to the power conversion controller, the second capacitor is coupled to the transformer secondary side.
  9. 9.如权利要求8所述的极低耗电显示控制方法,其特征在于,其中该显示控制器利用一通用型输入输出脚位控制该光耦合组件的该耦合电流的大小。 Extremely low power consumption as claimed in claim 8, the display control method thereof, wherein the display controller using a general purpose input output pin coupled to control the current magnitude of the light coupling assembly.
  10. 10.如权利要求8所述的极低耗电显示控制方法,其特征在于,其中该显示控制器藉由发动一通用型输入输出脚位的一讯号而增加该光耦合组件的该耦合电流的大小。 10. The electrode of the power consumption of a display control method according to claim 8, characterized in that, wherein the display controller by a universal launch a signal input and output pins of the coupling current increases the light coupling assembly size.
  11. 11.如权利要求8所述的极低耗电显示控制方法,其特征在于,其中该显示控制器藉由将一通用型输入输出脚位导通接地而增加该光耦合组件的该耦合电流的大小。 Extremely low power consumption as claimed in claim 8, said display control method characterized by wherein the display controller to a general purpose input-output pin of the conduction ground coupling current increases the light coupling assembly size.
  12. 12.如权利要求8所述的极低耗电显示控制方法,其特征在于,其中该显示控制器藉由解除一通用型输入输出脚位的一讯号而减少该光耦合组件的该耦合电流的大小。 12. The electrode of the power consumption of a display control method according to claim 8, characterized in that, wherein the display controller is released by a general-purpose input and output of a signal pin of the coupling current is reduced the light coupling assembly size.
  13. 13.如权利要求8所述的极低耗电显示控制方法,其特征在于,其中该关闭该电源转换控制器的步骤是由该显示控制器控制该光耦合组件的耦合电流的大小,而控制该电源转换控制器的一补偿脚位的电位高低。 Extremely low power consumption as claimed in claim 8, said display control method, wherein, wherein the step of closing the power converter controller is coupled to the current of the light coupling assembly is controlled by the size of the display controller, and the control a compensation pin of the low voltage power conversion controller.
  14. 14.如权利要求8所述的极低耗电显示控制方法,其特征在于,更包含对一第一电容与一第二电容充电直到该直流电压位准到达一预定位准的步骤。 Extremely low power consumption as claimed in claim 8, said display control method characterized by, further comprising a first capacitor to a second capacitor and a DC voltage step until the level reaches a predetermined level of charge.
  15. 15.如权利要求12所述的极低耗电显示控制方法,其特征在于,更包含对一第一电容与一第二电容充电持续达一预定期间的步骤。 15. The low power electrode 12 of the display control method claimed in claim, characterized in that, further comprising a pair of a first capacitor and a second capacitor step continues for a predetermined charging period.
CN 200810211744 2008-09-24 2008-09-24 Very-low power consumption display control circuit and relative method CN101685603B (en)

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US9761195B2 (en) * 2012-04-11 2017-09-12 Sitronix Technology Corp. Driving circuit for increasing a driving power supply voltage for a display panel

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