CN102098463B - Low-power consumption television - Google Patents
Low-power consumption television Download PDFInfo
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- CN102098463B CN102098463B CN200910188933.7A CN200910188933A CN102098463B CN 102098463 B CN102098463 B CN 102098463B CN 200910188933 A CN200910188933 A CN 200910188933A CN 102098463 B CN102098463 B CN 102098463B
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- 239000003990 capacitor Substances 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 230000002860 competitive effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention relates to a low-power consumption television, which comprises a master control chip, an infrared receiving circuit and a standby switching tube Q1, wherein the first end of the standby switching tube Q1 is connected with a power pin of the master control chip, and the second end of the standby switching tube Q1 is connected with a standby power supply; the control end of the standby switching tube Q1 is connected to the infrared receiving circuit through a standby switching circuit; and the standby switching circuit comprises switching tubes Q4 and Q5. The standby switching tube can keep the standby power consumption of the television less than 500 milliwatts, and the television has high reliability and improved competitive power.
Description
Technical field
The present invention relates to television set, more particularly, relate to a kind of low-power consumption television.
Background technology
At present color television set stand-by power consumption is generally larger, generally all 1W or more than.For realizing low-power consumption standby, mainly contain at present following several mode:
1, use the standby MCU of special low-power consumption, the load current while reducing standby.Increase Cost Problems but exist like this, also need original design to make larger amendment, exploitation input ratio is larger simultaneously;
2, use special standby power, the loss of power while reducing standby.Problem that this method exists exploitation to drop into equally and material cost significantly rises;
3, in MCU power supply, increase each electronic switch, when standby, MCU does not power, and directly triggers MCU power supply by infrared remote control, realizes remote-controlled start-up.This method does not increase cost, can significantly reduce power consumption yet, but has mistake problem of start-up, because the operation of any one remote controller all can cause television startup, practicality is little.
There is variety of issue in existing prior art: scheme 1 and 2, can significantly increase material cost problem, and also need original design to make larger amendment simultaneously, exploitation input ratio is larger; Scheme 3, this method does not increase cost, can significantly reduce power consumption yet, but has mistake problem of start-up, because the operation of any one remote controller (such as the remote controller of air-conditioning) all can cause television startup, practicality is little.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides a kind of low-power consumption television.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of low-power consumption television, it comprises main control chip, infrared receiving circuit and standby switches pipe Q1; The first end of described standby switches pipe Q1 is connected with the power pins of described main control chip, and the second end is connected with standby power, and the control end of described standby switches pipe Q1 is connected to described infrared receiving circuit by a standby switch circuit; Described standby switch circuit comprises switching tube Q4 and switching tube Q5;
Wherein, the input that the control end of described switching tube Q5 is described standby switch circuit, this input is coupled to the output of described infrared receiving circuit and is coupled to an input and output pin of described main control chip; The first end ground connection of described switch Q5, the second end is connected with the control end of described switching tube Q4;
The first end of described switching tube Q4 is connected with the control end of described switching tube Q5, the output that the second end of described switching tube Q4 is described standby switch circuit, and the output of described standby switch circuit is coupled to the control end of described standby switches pipe Q1;
The input of described standby switch circuit is also connected to described pin P1 by a switching tube Q6; Wherein, the first end ground connection of described switching tube Q6, the second end is coupled to the described input of described standby switch circuit, and control end is coupled to described pin P1;
When television set is during in holding state, switching tube Q1, Q4, Q5, Q6 are in cut-off state, when standby, only have infrared remote receiver U1 and switching tube Q2 in running order, now whole television set is removed outside Switching Power Supply loss, only has infrared remote receiver U1 and two loads of standby switches pipe Q1;
In the time of start, press any one remote control and build, now infrared remote receiver U1 can export a pulse signal, and by switching tube Q2 output pulse signal, and send to standby switch circuit driving switch pipe Q5 conducting, and then causing switching tube Q4 and Q1 conducting in succession, main control chip starts to obtain electricity;
Main control chip obtains after power supply, detect remote control input signal by main control chip, in certain time interval T, in the time that user presses remote-controlled start-up key again, judgement is that user need to turn on television set, main control chip is according to normal boot-strap program, carry out boot action, realize television startup, after start, the input and output pin P1 output low level of main control chip, when remote-controlled start-up key signals do not detected in time T time, judge that previous remote signal is user's misoperation or the straighforward operation of other electrical equipment, the input and output pin P1 output pulse signal of main control chip, make switching tube Q6 conducting, cause switching tube Q5, Q4 and Q1 end in succession, the power supply of main control chip is disconnected, television set reenters low-power consumption standby state.
In low-power consumption television of the present invention, described standby switch circuit also comprises: resistance R 7 and R8, capacitor C 1 and C2; Wherein,
One end ground connection of resistance R 8, the other end is connected with the first end of described switching tube Q4;
One end ground connection of capacitor C 2, the other end is connected with the control end of described switching tube Q5;
One end of resistance R 7 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4;
One end of capacitor C 1 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4.
In low-power consumption television of the present invention, the output of described standby switch circuit is connected to the control end of described standby switches pipe Q1 and a resistance R 1 and is connected to respectively the second end of described standby switches pipe Q1 by a resistance R 2.
In low-power consumption television of the present invention, the input of described standby switch circuit is also connected to an input and output pin P1 of described main control chip by a switching tube Q6; Wherein, the first end ground connection of described switching tube Q6, the second end is coupled to the input of described standby switch circuit, and control end is coupled to described input and output pin P1.
In low-power consumption television of the present invention, the input of described standby switch circuit is connected to the output of described infrared receiving circuit by a resistance R 9.
In low-power consumption television of the present invention, described infrared receiving circuit comprises infrared remote receiver U1, resistance R 3 and R6 and switching tube Q2;
Wherein, the power pins of described infrared remote receiver U1 is connected with standby power;
One end of resistance R 3 is connected with the data pin of described infrared remote receiver U1, and the other end is connected with the control end of described switching tube Q2;
The first end ground connection of switching tube Q2, the second end of switching tube Q2 is as the output of described infrared receiving circuit;
One end of resistance R 6 is connected with the power pins of described infrared remote receiver U1, and the other end is connected with the second end of switching tube Q2.
Implement low-power consumption television of the present invention, there is following beneficial effect: by increasing by a standby switch circuit, can make the stand-by power consumption of television set remain on below 500 milliwatts, there is very high reliability, improve the competitiveness of product.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the circuit theory diagrams of an embodiment of low-power consumption television of the present invention.
Embodiment
As shown in Figure 1, in low-power consumption television the first embodiment of the present invention, it mainly comprises main control chip 1, infrared receiving circuit 2 and standby switches pipe Q1; The first end of standby switches pipe Q1 is connected with the power pins Vcc of main control chip 1, and the second end of standby switches pipe Q1 is connected with standby power STB_Vcc, and the control end of standby switches pipe Q1 is connected to infrared receiving circuit by a standby switch circuit 3; In a preferred embodiment, standby switches pipe Q1 is metal-oxide-semiconductor, and wherein, the first end of standby switches pipe Q1 is that drain electrode, the second end are that source electrode, control end are grid.Standby switch circuit mainly comprises switching tube Q4 and switching tube Q5; Wherein, the control end of switching tube Q5 is the input of standby switch circuit 3, and this input is coupled to the output of infrared receiving circuit 2 and is coupled to an input and output pin P1 of main control chip 1; The first end ground connection of switching tube Q5, the second end is connected with the control end of described switching tube Q4; The first end of switching tube Q4 is connected with the control end of switching tube Q5, and the second end of switching tube Q4 is the output of standby switch circuit 3, and output is coupled to the control end of standby switches pipe Q1.In a preferred embodiment, switching tube Q4 and switching tube Q5 are triode, and the control end of switching tube Q5 is that base stage, first end are that emitter, the second end are collector electrode; The control end of switching tube Q4 is that base stage, first end are that collector electrode, the second end are emitter.
In a preferred embodiment, this standby switch circuit also comprises: resistance R 7 and R8, capacitor C 1 and C2; Wherein, one end ground connection of resistance R 8, the other end is connected with the first end of described switching tube Q4; One end ground connection of capacitor C 2, the other end is connected with the control end of described switching tube Q5; One end of resistance R 7 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4; One end of capacitor C 1 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4.The output of standby switch circuit is connected to the control end of described standby switches pipe Q1 and a resistance R 1 and is connected to respectively the second end of described standby switches pipe Q1 by a resistance R 2.
In a preferred embodiment, the input of standby switch circuit 3 is also connected to an input and output pin P1 of main control chip by a switching tube Q6; Wherein, the first end ground connection of switching tube Q6, the second end is coupled to the input of standby switch circuit, and control end is coupled to described input and output pin P1.The input of standby switch circuit is connected to the output of described infrared receiving circuit by a resistance R 9.In a preferred embodiment, switching tube Q6 is triode, and wherein, the first end of switching tube Q6 is that emitter, the second end are that collector electrode, control end are base stage.
In a preferred embodiment, infrared receiving circuit 2 comprises infrared remote receiver U1, resistance R 3 and R6 and switching tube Q2; Wherein, the operation signal that this infrared remote receiver U1 is responsible for user remote controller to send converts pulse signal to.The power pins of infrared remote receiver U1 is connected with standby power; One end of resistance R 3 is connected with the data pin of infrared remote receiver U1, and the other end is connected with the control end of switching tube Q2; The first end ground connection of switching tube Q2, the second end of switching tube Q2 is as the output of infrared receiving circuit; One end of resistance R 6 is connected with the power pins of infrared remote receiver U1, and the other end is connected with the second end of switching tube Q2.In a preferred embodiment, switching tube Q2 is triode, and wherein, the control end of switching tube Q2 is that base stage, first end are that emitter, the second end are collector electrode.
At work, when television set is during in holding state, switching tube Q1, Q4, Q5, Q6 be in cut-off state, not current sinking.When standby, only have infrared remote receiver U1 and switching tube Q2 in running order, operating current is less than 1mA.So now whole television set is removed outside Switching Power Supply loss, only have infrared remote receiver U1 and two of standby switches pipe Q1 to be less than the load of 1mA, stand-by power consumption is extremely low, with the conversion efficiency of existing Switching Power Supply, can make stand-by power consumption completely below 500 milliwatts.
In the time that user need to start shooting, only need press any one remote control and build.Now infrared remote receiver U1 can export a pulse signal, and export pulse signal A as shown in Figure 1 by switching tube Q2, and send to standby switch circuit 3 driving switch pipe Q5 conductings, then cause switching tube Q4 and Q1 conducting in succession, due to switching tube Q1 conducting, main control chip 1 starts to obtain electricity.
Main control chip obtains after power supply, detect remote control input signal by main control chip 1, in certain time interval T (as T=30 second), in the time that user presses remote-controlled start-up key again, judgement is that user need to turn on television set, and main control chip 1 is according to normal boot-strap program, carry out boot action, realize television startup, after start, the input and output pin P1 output low level of main control chip 1.When remote-controlled start-up key signals do not detected in time T time, judge that previous remote signal is user's misoperation or the straighforward operation of other electrical equipment, the input and output pin P1 of main control chip 1 exports pulse signal B as shown in Figure 1, make switching tube Q6 conducting, cause switching tube Q5, Q4 and Q1 in succession to end, the power supply of main control chip 1 is disconnected, and television set reenters low-power consumption standby state.
If need standby in the time of normal use, only need to execute after original standby command, allow the input and output pin P1 output pulse signal B of main control chip, just can enter equally low-power consumption standby state.
In a preferred embodiment, this television set also comprises a capacitor C 4, its one end is connected with the second end of switching tube Q6, the other end is connected with the second end of switching tube Q1, in the time that user uses alternating current machinery switch opens power supply, due to the effect of capacitor C 4, the switching tube Q5 conducting of trying to be the first, cause switching tube Q4 and Q1 conducting, main control chip 1 obtains power supply, is to carry out start to start standby command by main control chip 1 judgement.If start, carries out normal boot-strap instruction, if standby,, at a pulse signal B of input and output pin P1 output, then TV proceeds to low-power consumption band machine state.
The present invention describes by several specific embodiments, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, for particular condition or concrete condition, can make various amendments to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall within the scope of the claims in the present invention.
Claims (5)
1. a low-power consumption television, comprises main control chip, infrared receiving circuit and standby switches pipe Q1; The first end of described standby switches pipe Q1 is connected with the power pins of described main control chip, and the second end is connected with standby power, it is characterized in that, the control end of described standby switches pipe Q1 is connected to described infrared receiving circuit by a standby switch circuit; Described standby switch circuit comprises switching tube Q4 and switching tube Q5;
Wherein, the input that the control end of described switching tube Q5 is described standby switch circuit, this input is coupled to the output of described infrared receiving circuit and is coupled to an input and output pin P1 of described main control chip; The first end ground connection of described switching tube Q5, the second end is connected with the control end of described switching tube Q4;
The first end of described switching tube Q4 is connected with the control end of described switching tube Q5, the output that the second end of described switching tube Q4 is described standby switch circuit, and the output of described standby switch circuit is coupled to the control end of described standby switches pipe Q1;
The input of described standby switch circuit is also connected to described pin P1 by a switching tube Q6; Wherein, the first end ground connection of described switching tube Q6, the second end is coupled to the described input of described standby switch circuit, and control end is coupled to described pin P1;
When television set is during in holding state, switching tube Q1, Q4, Q5, Q6 are in cut-off state, when standby, only have infrared remote receiver U1 and switching tube Q2 in running order, now whole television set is removed outside Switching Power Supply loss, only has infrared remote receiver U1 and two loads of standby switches pipe Q1;
In the time of start, pressing any one remote control builds, now infrared remote receiver U1 can export a pulse signal, and by switching tube Q2 output pulse signal (A), and send to standby switch circuit (3) driving switch pipe Q5 conducting, then cause switching tube Q4 and Q1 conducting in succession, main control chip (1) starts to obtain electricity;
Main control chip obtains after power supply, detect remote control input signal by main control chip (1), in certain time interval T, in the time that user presses remote-controlled start-up key again, judgement is that user need to turn on television set, main control chip (1) is according to normal boot-strap program, carry out boot action, realize television startup, after start, the input and output pin P1 output low level of main control chip (1), when remote-controlled start-up key signals do not detected in time T time, judge that previous remote signal is user's misoperation or the straighforward operation of other electrical equipment, the input and output pin P1 output pulse signal (B) of main control chip (1), make switching tube Q6 conducting, cause switching tube Q5, Q4 and Q1 end in succession, the power supply of main control chip (1) is disconnected, television set reenters low-power consumption standby state.
2. low-power consumption television according to claim 1, is characterized in that, described standby switch circuit also comprises: resistance R 7 and R8, capacitor C 1 and C2; Wherein,
One end ground connection of resistance R 8, the other end is connected with the first end of described switching tube Q4;
One end ground connection of capacitor C 2, the other end is connected with the control end of described switching tube Q5;
One end of resistance R 7 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4;
One end of capacitor C 1 is connected with the second end of switching tube Q5, and the other end is connected with the second end of switching tube Q4.
3. low-power consumption television according to claim 1 and 2, it is characterized in that, the output of described standby switch circuit is connected to the control end of described standby switches pipe Q1 and a resistance R 1 and is connected to respectively the second end of described standby switches pipe Q1 by a resistance R 2.
4. low-power consumption television according to claim 1 and 2, is characterized in that, the input of described standby switch circuit is connected to the output of described infrared receiving circuit by a resistance R 9.
5. low-power consumption television according to claim 1 and 2, is characterized in that, described infrared receiving circuit comprises infrared remote receiver U1, resistance R 3 and R6 and switching tube Q2;
Wherein, the power pins of described infrared remote receiver U1 is connected with standby power;
One end of resistance R 3 is connected with the data pin of described infrared remote receiver U1, and the other end is connected with the control end of described switching tube Q2;
The first end ground connection of switching tube Q2, the second end of switching tube Q2 is as the output of described infrared receiving circuit;
One end of resistance R 6 is connected with the power pins of described infrared remote receiver U1, and the other end is connected with the second end of switching tube Q2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188933.7A CN102098463B (en) | 2009-12-15 | 2009-12-15 | Low-power consumption television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910188933.7A CN102098463B (en) | 2009-12-15 | 2009-12-15 | Low-power consumption television |
Publications (2)
| Publication Number | Publication Date |
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| CN102098463A CN102098463A (en) | 2011-06-15 |
| CN102098463B true CN102098463B (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910188933.7A Expired - Fee Related CN102098463B (en) | 2009-12-15 | 2009-12-15 | Low-power consumption television |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105867523B (en) * | 2015-01-20 | 2019-01-22 | 鸿富锦精密工业(武汉)有限公司 | The mainboard of discharge circuit and the application discharge circuit |
| CN112148101A (en) * | 2019-06-28 | 2020-12-29 | 鸿富锦精密工业(武汉)有限公司 | Power supply protection circuit and mainboard applying same |
| CN112984397A (en) * | 2021-02-20 | 2021-06-18 | 嘉兴瀚睿电子科技有限公司 | Keep apart intelligent PFM underwater lamp of adjusting luminance |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3402508B2 (en) * | 1994-02-28 | 2003-05-06 | 新電元工業株式会社 | Power supply circuit for TV receiver |
| JP2005027354A (en) * | 2004-10-04 | 2005-01-27 | Mitsubishi Electric Corp | Power control unit |
| CN101197979B (en) * | 2007-12-05 | 2010-10-06 | 深圳创维数字技术股份有限公司 | Energy-saving standby system of digital television receiver |
| CN101420570B (en) * | 2008-11-28 | 2011-11-23 | 深圳创维数字技术股份有限公司 | PVR set-top box and PVR reservation implementing method under standby state |
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