CN201210722Y - System auxiliary reset circuit - Google Patents
System auxiliary reset circuit Download PDFInfo
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- CN201210722Y CN201210722Y CNU2008203002920U CN200820300292U CN201210722Y CN 201210722 Y CN201210722 Y CN 201210722Y CN U2008203002920 U CNU2008203002920 U CN U2008203002920U CN 200820300292 U CN200820300292 U CN 200820300292U CN 201210722 Y CN201210722 Y CN 201210722Y
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Abstract
The utility model relates to a reset circuit, in particular to a system auxiliary reset circuit of television. The utility model discloses a system auxiliary reset circuit, the technical proposal is that: the system auxiliary reset circuit comprises a processor and an AC input; the circuit is characterized by further comprising: an AC signal detecting module and a reset level converting module; the AC signal detecting module is connected with the AC input; the AC signal detecting module is connected with the reset level converting module; the reset level converting module is connected with the processor reset pin. The utility model has the advantages of fully utilizing the compatible control ability, rapid response ability of the AC power detecting output signal, capable of well monitoring the system according to the wave motion of the power, suitable for the television system.
Description
Technical field
The utility model relates to a kind of reset circuit, particularly the system supplymentary reset circuit of television set.
Background technology
Existing color television set hardware is realized system reset control by the Detection of Stability to the low dc voltage of processor power supply substantially, this type of detect control mode general only in the system power supply rear end when voltage fluctuation or fault appear in the branch road of processor power supply just to the processor control that resets, whether other power supply branch roads that can't the monitoring power supply system are normal, therefore other branch troubles of system often appear, and the bad phenomenon that processor system and whole power-supply system are still being worked, especially to existing PDP colour TV system, if can not well carry out the systematicness monitoring according to the fluctuation of input power supply, very easily cause expensive integrated circuit and other expensive device failure of power source loads, and require to cause the Dispen of system on the very strict plasma display system in system's control timing easily, control such as Vson is bad, causes problems such as shutdown flower screen or variegation.The muting control circuit of existing colour TV audio control system has additional special shutdown squelch circuit simultaneously, be that system is by combining muting control circuit with the shutdown squelch circuit, the power supply that makes the power amplifier chip was finished the quiet control of power amplifier chip earlier before cutting off, avoided the unexpected power down when sound accompaniment is normally exported of power amplifier chip thus, the disturbing pulse that produced impacts audio amplifier and the noise that produces, solved the noise problem of ac dump, reached the quiet purpose of expection, this type of control mode component number is many, for level of integrated system higher PDP or LCD display system printed board PCB, take more design area, simultaneously component number is more, and the reliability design of system has been proposed higher probability demands.
The utility model content
The purpose of this utility model is to overcome the shortcoming that above-mentioned existing system reset control circuit exists, and provides a kind of television set to detect the circuit of realizing processor power down auxiliary reset by alternating current source.
The utility model solves its technical problem, the technical scheme that adopts is, the system supplymentary reset circuit, comprise processor and ac input end, it is characterized in that also comprise alternating current signal detection module and reset level modular converter, described alternating current signal detection module is connected with ac input end, described alternating current signal detection module is connected with the reset level modular converter, and described reset level modular converter is connected with the processor reset pin;
Further, also comprise power amplification circuit and shut down quiet level shifting circuit module, the quiet level shifting circuit module of described shutdown is connected with the quiet output control of processor mouth or the quiet level shifting circuit module of described shutdown is connected with the alternating current signal detection module, and the quiet level shifting circuit module of described shutdown is connected with power amplification circuit;
Further again, also comprise audio power amplifier power switch circuit module and shut down quiet level shifting circuit module, the quiet level shifting circuit module of described shutdown is connected with the alternating current signal detection module, and described audio power amplifier power switch circuit module is connected with the quiet level shifting circuit module of shutdown.
The beneficial effects of the utility model are; made full use of the compatible control ability of AC power detection output signal; capability of fast response; can well carry out the systematicness monitoring according to the fluctuation of input power supply; and owing to add the quiet level shifting circuit of shutdown; and be connected with audio power amplifier power switch circuit module or the quiet pin of power amplification circuit; saved traditional shutdown muting control circuit module; reduce the fault category that the component failure pattern causes; system reliability and system's complex protection ability have been improved; reduce system cost; and promoted systematic function, further improved systemic price ratio generally.
Description of drawings
Fig. 1 is the system block diagram of embodiment 1;
Fig. 2 is the circuit diagram of embodiment 1;
Fig. 3 is the system block diagram of embodiment 2;
Fig. 4 is the circuit diagram of embodiment 2;
Fig. 5 is the system block diagram of embodiment 3;
Fig. 6 is the circuit diagram of embodiment 3;
Embodiment
Below in conjunction with drawings and Examples, describe the technical solution of the utility model in detail.
The utility model is connected the alternating current signal detection module with ac input end, alternating current signal detection module output is connected with reset level modular converter input, reset level modular converter output is connected with the processor reset pin, has finished television set and has detected the technical problem that realizes processor power down auxiliary reset by alternating current source.
This example is connected the alternating current signal detection module with ac input end, alternating current signal detection module output is connected with reset level modular converter input, reset level modular converter output is connected with the processor reset pin, and increased the shutdown quiet level shifting circuit module, the quiet level shifting circuit module input that shuts down is connected with the quiet output control of processor mouth, the quiet level shifting circuit module output that shuts down is connected with the quiet pin of power amplification circuit, its system block diagram such as Fig. 1, circuit diagram such as Fig. 2.
Described alternating current signal detection module comprises first resistance R 1, second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7, the first rectifier diode D1, the second rectifier diode D2, the 3rd rectifier diode D3, the 4th rectifier diode D4, electrochemical capacitor C1, voltage stabilizing didoe VD1, photoelectrical coupler N1, the one NPN type triode Q1, switch transformer and power module, wherein, the positive pole of the first rectifier diode D1 is connected with the negative pole of the 3rd rectifier diode D3, the positive pole of the second rectifier diode D2 is connected with the negative pole of the 4th rectifier diode D4, the negative pole of the first rectifier diode D1 is connected with the negative pole of the second rectifier diode D2, the positive pole of the 3rd rectifier diode D3 is connected with the positive pole of the 4th rectifier diode D4, the positive pole of the first rectifier diode D1 is connected with the zero line of ac input end, the positive pole of the second rectifier diode D2 is connected with the live wire of ac input end, constitute full bridge rectifier, the anodal tie point with the 4th rectifier diode D4 positive pole of the 3rd rectifier diode D3 constitutes the elementary ground wire of power supply, first resistance R, 1 one ends are connected with the first rectifier diode D1 negative pole, the other end is connected with second resistance R, 2 one ends, second resistance R, 2 other ends are connected with the 6th resistance R 6 one ends, the 6th resistance R 6 other ends are connected with the elementary ground wire of power supply, voltage stabilizing didoe VD1 negative pole is connected with second resistance R, 2 tie points with the 6th resistance R 6, positive pole is connected with the elementary ground wire of power supply, the negative pole of voltage stabilizing didoe VD1 is connected with the positive pole of light-emitting diode among the photoelectrical coupler N1, the 3rd resistance R 3 one ends are connected with the first rectifier diode D1 negative pole, the other end is connected with the 4th resistance R 4 one ends, the 4th resistance R 4 other ends are connected with the positive pole of electrochemical capacitor C1, the negative pole of electrochemical capacitor C1 is connected with the elementary ground wire of power supply, the 5th resistance R 5 one ends are connected with electrochemical capacitor C1 is anodal, the other end is connected with electrochemical capacitor C1 negative pole, the one NPN type triode Q1 base stage is connected with electrochemical capacitor C1 is anodal, emitter is connected with the elementary ground wire of power supply, collector electrode is connected with light-emitting diode negative pole among the photoelectrical coupler N1, the phototriode emitter connects common ground among the photoelectrical coupler N1, collector electrode is connected with the 7th resistance R 7 one ends, the 7th resistance R 7 other ends are connected with the first direct current pressure side VCC1, switch transformer is connected with the first rectifier diode D1 negative pole with power module, handle and produce the first direct current pressure side VCC1, the second direct current pressure side VCC2, the 3rd direct current pressure side VCC3, stable DC voltage ends such as the 4th direct current pressure side VCC4, wherein the first direct current pressure side VCC1 is defined as and stablizes electrifying timing sequence direct current pressure side early;
Described reset level modular converter comprises the second direct current pressure side VCC2, the 2nd NPN type triode Q2, the 3rd NPN type triode Q3, the 8th resistance R 8, the 9th resistance R 9, the tenth resistance R 10, the 11 resistance R 11, the 12 resistance R 12, filter capacitor C2, wherein, the 8th resistance R 8 one ends are connected with the phototriode collector electrode of photoelectrical coupler N1 in the alternating current signal detection module, the other end is connected with the base stage of the 2nd NPN type triode Q2, the 9th resistance R 9 one ends are connected with the base stage of the 2nd NPN type triode Q2, the other end is connected with common ground, filter capacitor C2 one end is connected with the base stage of the 2nd NPN type triode Q2, the other end is connected with common ground, the 11 resistance R 11 1 ends are connected with the collector electrode of the 2nd NPN type triode Q2, the other end is connected with the base stage of the 3rd NPN type triode Q3, the emitter of the 2nd NPN type triode Q2 is connected with common ground, the tenth resistance R 10 1 ends are connected with the collector electrode of the 2nd NPN type triode Q2, the other end is connected with the second direct current pressure side VCC2, the 12 resistance R 12 1 ends are connected with the collector electrode of the 3rd NPN type triode Q3, one end is connected with the second direct current pressure side VCC2, the emitter of the 3rd NPN type triode Q3 is connected with common ground, and the collector electrode of the 3rd NPN type triode Q3 is reset level modular converter output and is connected with processor reset pin RST;
The quiet level shifting circuit module of described shutdown comprises the 13 resistance R 13, the 14 resistance R 14, the 3rd direct current pressure side VCC3, the 4th NPN type triode Q4, wherein the 13 resistance R 13 1 ends are the quiet level shifting circuit module input of shutdown, the other end is connected with the 4th NPN type triode Q4 base stage, the 4th NPN type triode Q4 emitter is connected with common ground, the 14 resistance R 14 1 ends are connected with the 4th NPN type triode Q4 collector electrode, the other end is connected with the 3rd direct current pressure side VCC3, and the 4th NPN type triode Q4 collector electrode is the quiet level shifting circuit module output of shutdown and is connected with the quiet pin of power amplification circuit.
When ac input end VAC forms DC power supply after full-bridge rectification, through first resistance R 1 and second resistance R 2, the 6th resistance R 6 current limliting dividing potential drops, and after voltage stabilizing didoe VD1 voltage stabilizing shunting in photoelectrical coupler N1 the light-emitting diode positive pole stable forward bias voltage is provided; DC power supply provides drive current to a NPN type triode Q1 base stage after the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5 sampling current limliting dividing potential drops, electrochemical capacitor C1 strobes.When ac input end power down or ac input end power supply are lower than the interchange input category of design, DC power supply is through the 3rd resistance R 3, the 4th resistance R 4, the electric current and voltage that the 5th resistance R 5 dividing potential drops drive a NPN type triode Q1 base stage reduces, the one NPN type triode Q1 ducting capacity reduces, then resistance increases between a NPN type triode Q1 collector and emitter, cause that light-emitting diode conducting electric current reduces among the photoelectrical coupler N1, then the phototriode on state characteristic reduces among the photoelectrical coupler N1, collector voltage increases, this voltage is through the 8th resistance R 8, the 9th resistance R 9 dividing potential drops, filter capacitor C2 carries out after the clutter filtering, drive the 2nd NPN type triode Q2 saturation conduction, then the 3rd NPN type triode Q3 is because the drive current on the 11 resistance R 11 is too small, enter by state, the collector electrode of the 3rd NPN type triode Q3 is to be high-impedance state publicly, the second direct current pressure side VCC2 provides high reset level by the 12 resistance R 12 to the reset terminal RST of processor, the detected high level pulse deration of signal of processor is after two machine cycles greater than the kernel single-chip microcomputer, carry out reset operation, this moment, the quiet control port of processor was exported corresponding high reset level, drive the 4th NPN type triode Q4 saturation conduction by the 13 resistance R 13, the quiet pin of power amplification circuit enters low level state, power amplification circuit enters quiet state of a control, system reaches the shutdown mute function, has eliminated shutdown abnormal sound problem effectively.AC power sample detecting circuit control module output detection signal is to the time of processor, respectively organize the time that voltage begins to descend early than power supply is secondary, and at least greater than two machine cycles of system's single-chip microcomputer, so satisfy the reset condition of the kernel single-chip microcomputer of general processor.When system's interchange powers on and enters stable state, a NPN type triode Q1 base stage is a high level in the AC power sample detecting circuit module, the one NPN type triode Q1 conducting, light-emitting diodes pipe end pressure reduction increases among the photoelectrical coupler N1, electric current by light-emitting diode strengthens, the conducting degree of phototriode strengthens, electric current increases in the phototriode, cause the collector electrode output voltage to reduce, therefore be output as low level, the 2nd NPN type triode Q2 ends, the 3rd NPN type triode Q3 thereby be in conducting state, its collector electrode output is constant to be low level, and the high level reset circuit is not had influence.
What the I/O mouth output high level in the present embodiment adopted is the processor hard-reset state, not controlled by software or extraneous remote control command, and the realization prerequisite of this hard-reset state is that the reset enable signal derives from before the power down of processor own; And what bring forward in the present embodiment is to realize the quiet control of shutdown, that is to say, transient state time section before the real power down of system, processor have resetted and have exported quiet control signal (a kind of switch controlling signal that this signal duplicates fully and adopts power-supply system to realize by the charging and discharging state of inertia device capacitor in the quiet control of the shutdown of prior art) in advance.If processor resets by the detection of power supply own routinely, processor also can't provide high level, because system's power down, this trickle aspect please be distinguished; And the quiet control of the shutdown of prior art does not adopt reason that processor controls just so yet; Make a general survey of the quiet control system of existing shutdown, quiet enable to derive from power-supply system and realize a kind of switch controlling signal output by the charging and discharging state of inertia device capacitor, and be not the processor control system that this patent relates to, the quiet control of conventional processors only refers to quiet at the system boot state, the tone-off such as figure is arranged.
Embodiment 2
This example is connected the alternating current signal detection module with ac input end, alternating current signal detection module output is connected with reset level modular converter input, reset level modular converter output is connected with the processor reset pin, and increased the shutdown quiet level shifting circuit module, the quiet level shifting circuit module input that shuts down is connected with alternating current signal detection module output, the quiet level shifting circuit module output that shuts down is connected with the quiet pin of power amplification circuit, its system block diagram such as Fig. 3, circuit diagram such as Fig. 4.
The process that its system supplymentary resets is referring to embodiment 1.When ac input end power down or ac input end power supply are lower than design and exchange the input category, the detection signal of alternating current signal detection module output directly carries out quiet control to power amplifier by the quiet level shifting circuit module of shutting down and enables, before reduction of power amplification circuit power supply or power down, finish quiet control, the quiet operation of realization system.System exchanges and powers on when entering steady-working state, and the alternating current signal detection module is output as low level, and the 4th NPN type triode Q4 in the quiet level shifting circuit module of shutting down is in by state, and muting control circuit is not had influence.
Embodiment 3
This example is connected the alternating current signal detection module with ac input end, alternating current signal detection module output is connected with reset level modular converter input, reset level modular converter output is connected with the processor reset pin, and increased audio power amplifier power switch circuit module and shut down quiet level shifting circuit module, the quiet level shifting circuit module of shutting down is connected with the alternating current signal detection module, and audio power amplifier power switch circuit module is connected with the quiet level shifting circuit module of shutdown.
Described audio power amplifier power switch circuit module comprises MOS switch integrated circuit, audio power amplifier power supply pin and the 5th direct current pressure side VCC5, wherein, the G grid of MOS switch integrated circuit is connected with the quiet level switch module output of shutdown, the S source electrode of MOS switch integrated circuit is connected with the 5th direct current pressure side VCC5, and the D drain electrode of MOS switch integrated circuit is connected with audio power amplifier power supply pin.
The process that its system supplymentary resets is referring to embodiment 1.When ac input end power down or ac input end are lower than design and exchange the input category, the detection signal of alternating current signal detection module output passes through directly to control audio power amplifier power switch circuit module after the quiet level shifting circuit module of shutdown, cut off audio power amplifier power supply power supply passage, realize the quiet control of system audio, this scheme is very effective to digital D class power amplifier.System exchanges and powers on when entering steady-working state, and the alternating current signal detection module is output as low level, and the 4th NPN type triode Q4 is in cut-off state in the quiet level switch module that shuts down, and audio power amplifier power switch circuit module is not had influence.
Claims (6)
- [claim 1] system supplymentary reset circuit, comprise processor and ac input end, it is characterized in that, also comprise alternating current signal detection module and reset level modular converter, described alternating current signal detection module is connected with ac input end, described alternating current signal detection module is connected with the reset level modular converter, and described reset level modular converter is connected with the processor reset pin.
- [claim 2] is according to the described system supplymentary reset circuit of claim 1, it is characterized in that, also comprise power amplification circuit and shut down quiet level shifting circuit module, the quiet level shifting circuit module of described shutdown is connected with the quiet output control of processor mouth, and the quiet level shifting circuit module of described shutdown is connected with power amplification circuit.
- [claim 3] is according to the described system supplymentary reset circuit of claim 1, it is characterized in that, also comprise power amplification circuit and shut down quiet level shifting circuit module, the quiet level shifting circuit module of described shutdown is connected with the alternating current signal detection module, and the quiet level shifting circuit module of described shutdown is connected with power amplification circuit.
- [claim 4] is according to the described system supplymentary reset circuit of claim 1, it is characterized in that, also comprise audio power amplifier power switch circuit module and shut down quiet level shifting circuit module, the quiet level shifting circuit module of described shutdown is connected with the alternating current signal detection module, and described audio power amplifier power switch circuit module is connected with the quiet level shifting circuit module of shutdown.
- [claim 5] is according to claim 1,2,3 or 4 described system supplymentary reset circuits, it is characterized in that, described alternating current signal detection module comprises first resistance (R1), second resistance (R2), the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6), the 7th resistance (R7), first rectifier diode (D1), second rectifier diode (D2), the 3rd rectifier diode (D3), the 4th rectifier diode (D4), electrochemical capacitor (C1), voltage stabilizing didoe (VD1), photoelectrical coupler (N1), the one NPN type triode (Q1), switch transformer and power module, wherein, the positive pole of first rectifier diode (D1) is connected with the negative pole of the 3rd rectifier diode (D3), the positive pole of second rectifier diode (D2) is connected with the negative pole of the 4th rectifier diode (D4), the negative pole of first rectifier diode (D1) is connected with the negative pole of second rectifier diode (D2), the positive pole of the 3rd rectifier diode (D3) is connected with the positive pole of the 4th rectifier diode (D4), the positive pole of first rectifier diode (D1) is connected with the zero line of ac input end, the positive pole of second rectifier diode (D2) is connected with the live wire of ac input end, constitute full bridge rectifier, the tie point that the 3rd rectifier diode (D3) is anodal and the 4th rectifier diode (D4) is anodal constitutes the elementary ground wire of power supply, first resistance (R1) end is connected with first rectifier diode (D1) negative pole, the other end is connected with second resistance (R2) end, second resistance (R2) other end is connected with the 6th resistance (R6) end, the 6th resistance (R6) other end is connected with the elementary ground wire of power supply, voltage stabilizing didoe (VD1) negative pole is connected with second resistance (R2) tie point with the 6th resistance (R6), positive pole is connected with the elementary ground wire of power supply, the negative pole of voltage stabilizing didoe (VD1) is connected with the positive pole of light-emitting diode in the photoelectrical coupler (N1), the 3rd resistance (R3) end is connected with first rectifier diode (D1) negative pole, the other end is connected with the 4th resistance (R4) end, the 4th resistance (R4) other end is connected with the positive pole of electrochemical capacitor (C1), the negative pole of electrochemical capacitor (C1) is connected with the elementary ground wire of power supply, the 5th resistance (R5) end is connected with electrochemical capacitor (C1) is anodal, the other end is connected with electrochemical capacitor (C1) negative pole, the one NPN type triode (Q1) base stage is connected with electrochemical capacitor (C1) is anodal, emitter is connected with the elementary ground wire of power supply, collector electrode is connected with light-emitting diode negative pole in the photoelectrical coupler (N1), the phototriode emitter connects common ground in the photoelectrical coupler (N1), collector electrode is connected with the 7th resistance (R7) end, the 7th resistance (R7) other end is connected with the first direct current pressure side (VCC1), and switch transformer is connected with first rectifier diode (D1) negative pole with power module.
- [claim 6] is according to claim 1,2,3 or 4 described system supplymentary reset circuits, it is characterized in that, described reset level modular converter comprises the second direct current pressure side (VCC2), the 2nd NPN type triode (Q2), the 3rd NPN type triode (Q3), the 8th resistance (R8), the 9th resistance (R9), the tenth resistance (R10), the 11 resistance (R11), the 12 resistance (R12), filter capacitor (C2), wherein, the 8th resistance (R8) end is connected with the phototriode collector electrode of photoelectrical coupler (N1) in the alternating current signal detection module, the other end is connected with the base stage of the 2nd NPN type triode (Q2), the 9th resistance (R9) end is connected with the base stage of the 2nd NPN type triode (Q2), the other end is connected with common ground, filter capacitor C2 one end is connected with the base stage of the 2nd NPN type triode (Q2), the other end is connected with common ground, the 11 resistance (R11) end is connected with the collector electrode of the 2nd NPN type triode (Q2), the other end is connected with the base stage of the 3rd NPN type triode (Q3), the emitter of the 2nd NPN type triode (Q2) is connected with common ground, the tenth resistance (R10) end is connected with the collector electrode of the 2nd NPN type triode (Q2), the other end is connected with the second direct current pressure side (VCC2), the 12 resistance (R12) end is connected with the collector electrode of the 3rd NPN type triode (Q3), one end is connected with the second direct current pressure side (VCC2), the emitter of the 3rd NPN type triode (Q3) is connected with common ground, and the collector electrode of the 3rd NPN type triode (Q3) is reset level modular converter output and is connected with processor reset pin (RST).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203002920U CN201210722Y (en) | 2008-02-29 | 2008-02-29 | System auxiliary reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203002920U CN201210722Y (en) | 2008-02-29 | 2008-02-29 | System auxiliary reset circuit |
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| CN201210722Y true CN201210722Y (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008203002920U Expired - Fee Related CN201210722Y (en) | 2008-02-29 | 2008-02-29 | System auxiliary reset circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882867A (en) * | 2010-06-28 | 2010-11-10 | 浙江大华技术股份有限公司 | Anti-strong interference switch control signal generating circuit of system power supply |
| CN103124452A (en) * | 2011-11-18 | 2013-05-29 | 海洋王（东莞）照明科技有限公司 | LED driving circuit and LED lamp |
| CN106300625A (en) * | 2016-08-31 | 2017-01-04 | 山东鼎讯智能交通股份有限公司 | The double standby power supply of traffic signaling equipment direct current |
| CN106787849A (en) * | 2016-12-19 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of power circuit and liquid crystal display |
| CN110009898A (en) * | 2019-04-29 | 2019-07-12 | 深圳市嘉昱机电有限公司 | A kind of infrared receiving device and infrared receiving system |
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2008
- 2008-02-29 CN CNU2008203002920U patent/CN201210722Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882867A (en) * | 2010-06-28 | 2010-11-10 | 浙江大华技术股份有限公司 | Anti-strong interference switch control signal generating circuit of system power supply |
| CN101882867B (en) * | 2010-06-28 | 2013-08-07 | 浙江大华技术股份有限公司 | Anti-strong interference switch control signal generating circuit of system power supply |
| CN103124452A (en) * | 2011-11-18 | 2013-05-29 | 海洋王（东莞）照明科技有限公司 | LED driving circuit and LED lamp |
| CN106300625A (en) * | 2016-08-31 | 2017-01-04 | 山东鼎讯智能交通股份有限公司 | The double standby power supply of traffic signaling equipment direct current |
| CN106787849A (en) * | 2016-12-19 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of power circuit and liquid crystal display |
| CN106787849B (en) * | 2016-12-19 | 2019-11-05 | 深圳市华星光电技术有限公司 | A kind of power circuit and liquid crystal display |
| CN110009898A (en) * | 2019-04-29 | 2019-07-12 | 深圳市嘉昱机电有限公司 | A kind of infrared receiving device and infrared receiving system |
| CN110009898B (en) * | 2019-04-29 | 2024-02-06 | 深圳市嘉昱机电有限公司 | Infrared receiving device and infrared receiving system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20160229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |