CN102098463A - Low-power consumption television - Google Patents
Low-power consumption television Download PDFInfo
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- CN102098463A CN102098463A CN2009101889337A CN200910188933A CN102098463A CN 102098463 A CN102098463 A CN 102098463A CN 2009101889337 A CN2009101889337 A CN 2009101889337A CN 200910188933 A CN200910188933 A CN 200910188933A CN 102098463 A CN102098463 A CN 102098463A
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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 invention relates to a television, in particular to a low-power-consumption television.
Background
At present, the standby power consumption of a color television is generally larger and is generally 1W or more. To realize low power consumption standby, there are mainly the following ways:
1. and a special low-power consumption standby MCU is used for reducing the load current in standby. But the cost is increased, and the original design is required to be greatly modified, so that the development investment is large;
2. and a special standby power supply is used, so that the power consumption in standby is reduced. The method also has the problems of great development investment and material cost rise;
3. each electronic switch is added to the MCU for power supply, the MCU is not powered in standby, the infrared remote control directly triggers the MCU for power supply, and remote control starting is realized. The method can also greatly reduce the power consumption without increasing the cost, but has the problem of false startup because the television is started up due to the operation of any remote controller, and the practicability is not high.
The prior art has various problems: the schemes 1 and 2 can greatly increase the material cost, and meanwhile, the original design needs to be greatly modified, so that the development investment is large; in the scheme 3, the method can also greatly reduce the power consumption without increasing the cost, but has the problem of false startup because the television is started up due to the operation of any remote controller (such as the remote controller of an air conditioner), and the practicability is low.
Disclosure of Invention
The present invention is directed to a low power consumption television set, which solves the above-mentioned drawbacks of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: constructing a low-power consumption television which comprises a main control chip, an infrared receiving circuit and a standby switch tube Q1; the first end of the standby switch tube Q1 is connected with a power pin of the main control chip, the second end of the standby switch tube Q1 is connected with a standby power supply, and the control end of the standby switch tube Q1 is connected to the infrared receiving circuit through a standby switch circuit; the standby switch circuit comprises a switch tube Q4 and an open light tube Q5;
the control end of the switching tube Q5 is the input end of the standby switching circuit, and the input end is coupled to the output end of the infrared receiving circuit and to an input/output pin of the main control chip; the first end of the switch Q5 is grounded, and the second end is connected with the control end of the switch tube Q4;
the first end of the switch tube Q4 is connected to the control end of the switch tube Q5, and the second end of the switch tube Q4 is the output end of the standby switch circuit, which is coupled to the control end of the standby switch tube Q1.
In the low power consumption television of the present invention, the standby switch circuit further includes: resistors R7 and R8, capacitors C1 and C2; wherein,
one end of the resistor R8 is grounded, and the other end is connected with the first end of the switch tube Q4;
one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the control end of the switch tube Q5;
one end of the resistor R7 is connected with the second end of the switching tube Q5, and the other end is connected with the second end of the switching tube Q4;
one end of the capacitor C1 is connected to the second end of the switching tube Q5, and the other end is connected to the second end of the switching tube Q4.
In the low power consumption tv set of the present invention, the output terminal of the standby switch circuit is connected to the control terminal of the standby switch transistor Q1 through a resistor R2 and a resistor R1 is connected to the second terminal of the standby switch transistor Q1.
In the low power consumption television of the present invention, the input terminal of the standby switch circuit is further connected to an input/output pin P1 of the main control chip through a switch tube Q6; the switch tube Q6 has a first terminal connected to ground, a second terminal coupled to the input terminal of the standby switch circuit, and a control terminal coupled to the input/output pin P1.
In the low power consumption television of the invention, the input end of the standby switch circuit is connected to the output end of the infrared receiving circuit through a resistor R9.
In the low power consumption television of the invention, the infrared receiving circuit comprises an infrared receiver U1, resistors R3 and R6 and a switching tube Q2;
the power supply pin of the infrared receiver U1 is connected with a standby power supply;
one end of the resistor R3 is connected with a data pin of the infrared receiver U1, and the other end of the resistor R3 is connected with the control end of the switch tube Q2;
the first end of the switch tube Q2 is grounded, and the second end of the switch tube Q2 is used as the output end of the infrared receiving circuit;
one end of the resistor R6 is connected with a power supply pin of the infrared receiver U1, and the other end is connected with the second end of the switch tube Q2.
The low-power consumption television set has the following beneficial effects: by adding a standby switch circuit, the standby power consumption of the television can be kept below 500 milliwatts, the reliability is high, and the competitiveness of the product is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic circuit diagram of an embodiment of a low power consumption tv set according to the present invention.
Detailed Description
As shown in fig. 1, in the first embodiment of the low power consumption television of the present invention, it mainly includes a main control chip 1, an infrared receiving circuit 2 and a standby switch tube Q1; a first end of the standby switch tube Q1 is connected with a power supply pin Vcc of the main control chip 1, a second end of the standby switch tube Q1 is connected with a standby power supply STB _ Vcc, and a control end of the standby switch tube Q1 is connected to the infrared receiving circuit through a standby switch circuit 3; in a preferred embodiment, the standby switch Q1 is a MOS transistor, wherein the standby switch Q1 has a first terminal as a drain, a second terminal as a source, and a control terminal as a gate. The standby switch circuit mainly comprises a switch tube Q4 and an open light tube Q5; the control end of the switching tube Q5 is the input end of the standby switching circuit 3, and the input end is coupled to the output end of the infrared receiving circuit 2 and to an input/output pin P1 of the main control chip 1; the first end of the switching tube Q5 is grounded, and the second end is connected with the control end of the switching tube Q4; the first end of the switch tube Q4 is connected to the control end of the switch tube Q5, the second end of the switch tube Q4 is the output end of the standby switch circuit 3, and the output end is coupled to the control end of the standby switch tube Q1. In a preferred embodiment, the switching tube Q4 and the switching tube Q5 are both triodes, the control end of the switching tube Q5 is a base, the first end is an emitter, and the second end is a collector; the control end of the switching tube Q4 is a base electrode, the first end is a collector electrode, and the second end is an emitter electrode.
In a preferred embodiment, the standby switch circuit further includes: resistors R7 and R8, capacitors C1 and C2; one end of the resistor R8 is grounded, and the other end of the resistor R8 is connected with the first end of the switch tube Q4; one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the control end of the switch tube Q5; one end of the resistor R7 is connected with the second end of the switching tube Q5, and the other end is connected with the second end of the switching tube Q4; one end of the capacitor C1 is connected to the second end of the switching tube Q5, and the other end is connected to the second end of the switching tube Q4. The output terminal of the standby switch circuit is connected to the control terminal of the standby switch transistor Q1 through a resistor R2 and the second terminal of the standby switch transistor Q1 through a resistor R1, respectively.
In a preferred embodiment, the input terminal of the standby switch circuit 3 is further connected to an input/output pin P1 of the main control chip through a switch Q6; the first end of the switch tube Q6 is grounded, the second end is coupled to the input end of the standby switch circuit, and the control end is coupled to the input/output pin P1. The input end of the standby switch circuit is connected to the output end of the infrared receiving circuit through a resistor R9. In a preferred embodiment, the switching transistor Q6 is a triode, wherein the first terminal of the switching transistor Q6 is an emitter, the second terminal is a collector, and the control terminal is a base.
In a preferred embodiment, the infrared receiving circuit 2 comprises an infrared receiver U1, resistors R3 and R6, and a switching tube Q2; the infrared receiver U1 is responsible for converting the operation signal sent by the user remote controller into a pulse signal. A power supply pin of the infrared receiver U1 is connected with a standby power supply; one end of the resistor R3 is connected with a data pin of the infrared receiver U1, and the other end of the resistor R3 is connected with the control end of the switch tube Q2; the first end of the switch tube Q2 is grounded, and the second end of the switch tube Q2 is used as the output end of the infrared receiving circuit; one end of the resistor R6 is connected with a power supply pin of the infrared receiver U1, and the other end is connected with the second end of the switch tube Q2. In a preferred embodiment, the switching transistor Q2 is a triode, wherein the control terminal of the switching transistor Q2 is a base, the first terminal is an emitter, and the second terminal is a collector.
In operation, when the television is in a standby state, the switching tubes Q1, Q4, Q5 and Q6 are all in an off state, and no current is consumed. In standby, only the infrared receiver U1 and the switch tube Q2 are in working state, and the working current is less than 1 mA. Therefore, except the loss of the switching power supply, the whole television has only two loads of less than 1mA, namely the infrared receiver U1 and the standby switching tube Q1, and the standby power consumption is extremely low, so that the standby power consumption can be completely below 500 milliwatts by using the conversion efficiency of the conventional switching power supply.
When the user needs to start up, only any one remote control is required to be pressed. At this time, the infrared receiver U1 will output a pulse signal, and the pulse signal a shown in fig. 1 is output by the switch tube Q2, and sent to the standby switch circuit 3 to drive the switch tube Q5 to be turned on, and then the switch tubes Q4 and Q1 are caused to be turned on successively, and the main control chip 1 starts to obtain power because the switch tube Q1 is turned on.
After the main control chip obtains power supply, the main control chip 1 detects a remote control input signal, and when a user presses a remote control power-on key again within a certain time T (if T is 30 seconds), the user determines that the user needs to turn on the television, then the main control chip 1 executes a power-on action according to a normal power-on program, so as to realize the power-on of the television, and after the power-on, the input/output pin P1 of the main control chip 1 outputs a low level. When the remote control power-on key signal is not detected within the time T, it is determined that the previous remote control signal is only a user's misoperation or a remote control operation of another electrical appliance, the input/output pin P1 of the main control chip 1 outputs a pulse signal B as shown in fig. 1, so that the switching tube Q6 is turned on, the switching tubes Q5, Q4 and Q1 are sequentially turned off, the power supply of the main control chip 1 is turned off, and the television set enters a low power consumption standby state again.
If the standby is needed during normal use, the input/output pin P1 of the main control chip outputs the pulse signal B only after the original standby command is executed, and the low power consumption standby state can be entered as well.
In a preferred embodiment, the television further includes a capacitor C4, one end of which is connected to the second end of the switch Q6, and the other end of which is connected to the second end of the switch Q1, when the user turns on the power supply by using the ac mechanical switch, the switch Q5 is turned on preemptively due to the capacitor C4, so that the switch Q4 and the switch Q1 are turned on, the main control chip 1 obtains power supply, and the main control chip 1 determines that the power-on start standby command is executed. If the television is started, a normal starting instruction is executed, if the television is in a standby state, a pulse signal B is output at an input/output pin P1, and then the television is switched into a low-power-consumption tape machine state.
While the invention has been described with reference to several embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. A low-power consumption television comprises a main control chip, an infrared receiving circuit and a standby switch tube Q1; the infrared receiving circuit is characterized in that the control end of the standby switch tube Q1 is connected to the infrared receiving circuit through a standby switch circuit; the standby switch circuit comprises a switch tube Q4 and an open light tube Q5;
the control end of the switching tube Q5 is the input end of the standby switching circuit, and the input end is coupled to the output end of the infrared receiving circuit and to an input/output pin P1 of the main control chip; the first end of the switching tube Q5 is grounded, and the second end is connected with the control end of the switching tube Q4;
the first end of the switch tube Q4 is connected to the control end of the switch tube Q5, and the second end of the switch tube Q4 is the output end of the standby switch circuit, which is coupled to the control end of the standby switch tube Q1.
2. The low power consumption television set according to claim 1, wherein the standby switching circuit further comprises: resistors R7 and R8, capacitors C1 and C2; wherein,
one end of the resistor R8 is grounded, and the other end is connected with the first end of the switch tube Q4;
one end of the capacitor C2 is grounded, and the other end of the capacitor C2 is connected with the control end of the switch tube Q5;
one end of the resistor R7 is connected with the second end of the switching tube Q5, and the other end is connected with the second end of the switching tube Q4;
one end of the capacitor C1 is connected to the second end of the switching tube Q5, and the other end is connected to the second end of the switching tube Q4.
3. The TV set as claimed in claim 1 or 2, wherein the output terminal of the standby switch circuit is connected to the control terminal of the standby switch Q1 through a resistor R2 and the second terminal of the standby switch Q1 through a resistor R1, respectively.
4. The TV set with low power consumption as claimed in claim 1 or 2, wherein the input terminal of the standby switch circuit is further connected to an input/output pin P1 of the main control chip through a switch tube Q6; the switch tube Q6 has a first terminal connected to ground, a second terminal coupled to the input terminal of the standby switch circuit, and a control terminal coupled to the input/output pin P1.
5. The television set with low power consumption as claimed in claim 1 or 2, wherein the input terminal of the standby switch circuit is connected to the output terminal of the infrared receiving circuit through a resistor R9.
6. The low power consumption television set according to claim 1 or 2, wherein the infrared receiving circuit comprises an infrared receiver U1, resistors R3 and R6, and a switching tube Q2;
the power supply pin of the infrared receiver U1 is connected with a standby power supply;
one end of the resistor R3 is connected with a data pin of the infrared receiver U1, and the other end of the resistor R3 is connected with the control end of the switch tube Q2;
the first end of the switch tube Q2 is grounded, and the second end of the switch tube Q2 is used as the output end of the infrared receiving circuit;
one end of the resistor R6 is connected with a power supply pin of the infrared receiver U1, and the other end is connected with the second end of the switch 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 |
|---|---|
| CN102098463A true CN102098463A (en) | 2011-06-15 |
| CN102098463B 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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867523A (en) * | 2015-01-20 | 2016-08-17 | 鸿富锦精密工业(武汉)有限公司 | Discharging circuit and mainboard using same |
| 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 |
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| JPH07240888A (en) * | 1994-02-28 | 1995-09-12 | Shindengen Electric Mfg Co Ltd | Power supply circuit for television receiver |
| JP2005027354A (en) * | 2004-10-04 | 2005-01-27 | Mitsubishi Electric Corp | Power control unit |
| CN101197979A (en) * | 2007-12-05 | 2008-06-11 | 深圳创维数字技术股份有限公司 | Energy-saving standby system of digital television receiver |
| CN101420570A (en) * | 2008-11-28 | 2009-04-29 | 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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2009
- 2009-12-15 CN CN200910188933.7A patent/CN102098463B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07240888A (en) * | 1994-02-28 | 1995-09-12 | Shindengen Electric Mfg Co Ltd | Power supply circuit for television receiver |
| JP2005027354A (en) * | 2004-10-04 | 2005-01-27 | Mitsubishi Electric Corp | Power control unit |
| CN101197979A (en) * | 2007-12-05 | 2008-06-11 | 深圳创维数字技术股份有限公司 | Energy-saving standby system of digital television receiver |
| CN101420570A (en) * | 2008-11-28 | 2009-04-29 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867523A (en) * | 2015-01-20 | 2016-08-17 | 鸿富锦精密工业(武汉)有限公司 | Discharging circuit and mainboard using same |
| 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 |
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| Publication number | Publication date |
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| CN102098463B (en) | 2014-07-16 |
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