CN209435361U - A kind of reset circuit and television set - Google Patents
A kind of reset circuit and television set Download PDFInfo
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- CN209435361U CN209435361U CN201821842122.5U CN201821842122U CN209435361U CN 209435361 U CN209435361 U CN 209435361U CN 201821842122 U CN201821842122 U CN 201821842122U CN 209435361 U CN209435361 U CN 209435361U
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- triode
- reset circuit
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Abstract
The utility model discloses a kind of reset circuit and television sets, the connection of the control chip of the reset circuit and television set, including reset circuit opening module, reset signal output module, reset key and power supply module, when TV crashes, the reset circuit opening module opens reset circuit, when reset key persistently presses preset time, to the control chip, the control chip control power supply module after receiving reset signal and powers the crash reset restarted to realize television set the reset signal output module output reset signal.The utility model opens reset circuit by directlying adopt single-button mode, simple and convenient, and security performance is high, be not in as hard reset and caused by risk.
Description
Technical field
The utility model relates to reset control field, in particular to a kind of television set and its halt reset circuit.
Background technique
Existing television system substantially all employs Android smart television operating system, in the operation of intelligent operating system
It inevitably will appear crash state in the process, after crash, need to carry out reset operation to TV, TV hardware frame is gradually at present
Integrated original reset circuit, external hardware, which operates reset to television system again, restarts, so needing again occurring crashing
When position, it can only generally be restarted by alternating-current switch, but current television design has phased out exchange can opener
It uses, by the way of power supply line plug-in, so, if plugging power supply line again, being brought to user when actually being resetted
Very big inconvenience, and security performance is not high.
Thus the prior art could be improved and improve.
Utility model content
Place in view of above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a kind of reset circuit and TVs
Machine can directly reset TV using single-button, simple and convenient, and security performance is high.
In order to achieve the above object, the utility model takes following technical scheme:
A kind of reset circuit is connect with the control chip of television set, including the output of reset circuit opening module, reset signal
Module, reset key and power supply module, when TV crashes, the reset circuit opening module opens reset circuit, works as reset
When key persistently presses preset time, the reset signal output module output reset signal to the control chip, the control
Coremaking piece controls power supply module power supply after receiving reset signal and restarts crash reset to realize television set.
In the reset circuit, the reset signal output module includes key signal input unit, charhing unit, divides
Unit and reset signal output unit are pressed, after reset key presses preset time, the key signal input unit conducting, and drive
It moves the charhing unit to charge, makes the reset after dividing after the charhing unit charging by the partial pressure unit
Output reset signal is connected to controlling chip in signal output unit.
In the reset circuit, the reset circuit opening module include first resistor, second resistance, 3rd resistor,
4th resistance, the 5th resistance, the first triode and the first metal-oxide-semiconductor, one end connection control chip of the first resistor enable
The one end at end and second resistance, the base stage of the first triode of the other end of the first resistor, the transmitting of first triode
One end of pole, one end of second resistance and the 5th resistance is grounded, the collector connection 3rd resistor of first triode
One end, the other end of the 5th resistance and the 4th resistance one end, the other end of the 3rd resistor connects 3.3V power supply, described the
The other end of four resistance connects the grid of the first metal-oxide-semiconductor, and the drain electrode of first metal-oxide-semiconductor connects 3.3V power supply, the first MOS
The source electrode of pipe connects one end of the 6th resistance, and the other end of the 6th resistance connects case signal input unit.
In the reset circuit, the key signal input unit include the 7th resistance, the 8th resistance, the 9th resistance,
One end of tenth resistance, eleventh resistor and the second triode, the 7th resistance connects 3.3V power supply, the 7th resistance
The other end controls the push button signalling output end of chip and one end of the 9th resistance by the connection of the 8th resistance, the 9th resistance
The other end connects the base stage of the second triode, and the emitter of second triode connects the other end of the 6th resistance, and described the
The collector of two triodes connects one end of the tenth resistance, the other end connection charhing unit and the 11st electricity of the tenth resistance
One end of resistance, the other end ground connection of the eleventh resistor.
In the reset circuit, the charhing unit includes twelfth resistor and first capacitor, the twelfth resistor
One end connect the other end of the tenth resistance, one end of the other end connection first capacitor of the twelfth resistor and partial pressure are single
Member, the other end ground connection of the first capacitor.
In the reset circuit, the partial pressure unit includes thirteenth resistor and the 14th resistance, the 13rd electricity
The other end of one end connection twelfth resistor of resistance, the other end of the thirteenth resistor connect one end of the 14th resistance and answer
Position signal output unit, the other end ground connection of the 14th resistance.
In the reset circuit, the reset signal output unit includes third transistor, the 15th resistance and the tenth
Six resistance, the other end of the base stage connection thirteenth resistor of the third transistor, the emitter ground connection of the third transistor,
The collector of the third transistor connects one end of the 15th resistance and one end of the 16th resistance, the 15th resistance
The other end connects 5V power supply, the reset signal input terminal and power supply mould of the other end connection control chip of the 16th resistance
Block.
In the reset circuit, the power supply module includes the 4th triode, the 17th resistance, the 18th resistance, the
The base stage of 19 resistance, the 20th resistance, the second capacitor and the second metal-oxide-semiconductor, the 4th triode connects the 16th resistance
The collector of the other end, the 4th triode connects one end of the 20th resistance and one end and the 18th of the 17th resistance
One end of resistance, the other end of the 18th resistance and the emitter of the 4th triode are grounded, the 20th resistance
The other end connects 5V power supply, and the other end of the 17th resistance connects one end of the second capacitor and the grid of the second metal-oxide-semiconductor, institute
State the other end of drain electrode the second capacitor of connection of the second metal-oxide-semiconductor and the power control terminal of control chip, the source of second metal-oxide-semiconductor
Pole connects one end and the power output end of the 19th resistance, the other end ground connection of the 19th resistance.
In the reset circuit, first metal-oxide-semiconductor and the second metal-oxide-semiconductor are NMOS tube, first triode,
Three triodes and the 4th triode are NPN type triode, and second triode is PNP type triode.
A kind of television set, including control chip and reset circuit as described above, the reset circuit connect the control
The reset signal input terminal of coremaking piece.
Compared to the prior art, in reset circuit and television set provided by the utility model, the reset circuit and TV
The control chip of machine connects, including reset circuit opening module, reset signal output module, reset key and power supply module, when
When TV crashes, the reset circuit opening module opens reset circuit, described when reset key persistently presses preset time
Reset signal output module output reset signal to the control chip, the control chip controls after receiving reset signal
The crash reset to realize television set is restarted in power supply module power supply.The utility model is opened again by directlying adopt single-button mode
Position circuit, it is simple and convenient, and security performance is high, be not in as hard reset and caused by risk.
Detailed description of the invention
Fig. 1 is the structural block diagram of reset circuit provided by the utility model.
Fig. 2 is the schematic diagram of reset circuit provided by the utility model.
Specific embodiment
The utility model provides a kind of reset circuit and television set, to make the purpose of this utility model, technical solution and effect
Fruit is clearer, clear, and the utility model is further described as follows in conjunction with drawings and embodiments.It should be appreciated that this
Locate described specific embodiment only to explain the utility model, is not used to limit the utility model.
Referring to Fig. 1, reset circuit provided by the utility model, connect with the control chip 1 of television set, including reset electricity
Road opening module 2, reset signal output module 3, reset key 4 and power supply module 5, the control chip 1 connect reset circuit
Opening module 2, reset signal output module 3, reset key 4 and power supply module 5, the reset circuit opening module 2 connect institute
Reset signal output module 3 is stated, the reset signal output module 3 is also connected with the power supply module 5.
Specifically, the reset circuit opening module 2 is used to open reset circuit when TV breaks down and crashes；Institute
Reset signal output module 3 is stated for when key persistently presses preset time, output reset signal is to controlling chip；It is described multiple
Position key 4 is for carrying out reset operation, and when reset key 4 presses next section of preset time, the control chip 1 is received effectively
Reset key signal, then output this to reset circuit opening module 3, by reset circuit opening module 3 export reset letter
Number, in the present embodiment, the preset time is 10 seconds, and reset key can directly select function button, saves cost, and not
Occupied space；The control chip 1 restarts the power supply module power supply after receiving reset signal, the control chip 1
For existing television set central processing unit, no longer it is described in greater detail herein.
In other words, when TV crashes, the reset circuit opening module opens reset circuit, when reset key continues
When pressing preset time, the reset signal output module output reset signal to the control chip, the control chip exists
Receive the crash reset that the power supply of control power supply module is restarted to realize television set after reset signal.It crosses and directlys adopt single-button side
Formula opens reset circuit, simple and convenient, and security performance is high, be not in as hard reset and caused by risk.
Furthermore, it is understood that referring to Fig. 2, the reset signal output module 3 includes key signal input unit 31, charging
Unit 32, partial pressure unit 33 and reset signal output unit 34, wherein the key signal input unit 31, charhing unit 32,
Partial pressure unit 33 and reset signal output unit 34 are sequentially connected, and the key signal input unit 31 is also connected with control chip 1
With reset circuit opening module 2, the reset signal output unit 34 is also connected with control chip 1；The push button signalling input is single
After first reset key 4 presses preset time, the key signal input unit 31 is connected, and the charhing unit 32 is driven to carry out
Charging, the charhing unit 32 make the reset signal output unit 34 after dividing after charging by the partial pressure unit 33
Output reset signal is connected to control chip 1.
Specifically, the reset circuit opening module 2 includes first resistor R1, second resistance R2,3rd resistor R3, the 4th
Resistance R4, the 5th resistance R5, the first triode Q1 and the first metal-oxide-semiconductor M1, one end connection control chip 1 of the first resistor R1
Enable end and second resistance R2 one end, the base stage of the first triode of other end Q1 of the first resistor R1, described first
One end of the emitter of triode Q1, one end of second resistance R2 and the 5th resistance R5 is grounded, the first triode Q1's
Collector connects one end, the other end of the 5th resistance R5 and one end of the 4th resistance R4 of 3rd resistor R3, the 3rd resistor
The other end connection 3.3V power supply of R3, the grid of the first metal-oxide-semiconductor M1 of other end connection of the 4th resistance R4, described first
The drain electrode connection 3.3V power supply of metal-oxide-semiconductor M1, one end of the 6th resistance R6 of source electrode connection of the first metal-oxide-semiconductor M1, the described 6th
The other end of resistance R6 connects key signal input unit 31.
Specifically, when television set works normally, when key long-pressing or short-press, the I/O port for controlling chip 1 is (enabled
End) level be not in variation, do not influence the normal function of key；When television set crashes, the IO of control chip 1 exports high
Level, so that the first triode Q1 is opened, further such that the first metal-oxide-semiconductor M1 also reaches conducting voltage and is connected, to open
Reset function may be implemented when reset key 4 is pressed again in the reset circuit, it is preferred that the first triode Q1 is
NPN type triode, first metal-oxide-semiconductor are NMOS tube.
Please continue to refer to Fig. 2, the key signal input unit 31 includes the 7th resistance R7, the 8th resistance R8, the 9th electricity
Hinder one end connection 3.3V electricity of R9, the tenth resistance R10, eleventh resistor R11 and the second triode Q2, the 7th resistance R7
Source, the other end of the 7th resistance R7 control the push button signalling output end and the 9th electricity of chip 1 by the 8th resistance R8 connection
One end of R9 is hindered, the other end of the 9th resistance R9 connects the base stage of the second triode Q2, the hair of the second triode Q2
Emitter-base bandgap grading connects the other end of the 6th resistance R6, and the collector of the second triode Q2 connects one end of the tenth resistance R10, described
One end of the other end connection charhing unit 32 and eleventh resistor R11 of tenth resistance R10, the eleventh resistor R11's is another
One end ground connection.
Specifically, described to press in any case since reset circuit opening module 1 does not turn on when TV works normally
Key, key signal input unit 31 cannot output signal to charhing unit；When TV crashes, reset circuit conduction module
2 conductings, at this time when long-pressing reset key 4, control chip recognizes effective reset key signal, is issued by the 9th resistance R9
High level is to the base stage of the second triode Q2, and the second triode Q2 is opened, by the tenth resistance R10 output voltage to charhing unit
32, it charges to charhing unit 32, it is preferred that the second triode Q2 is PNP type triode.
Please continue to refer to Fig. 2, the charhing unit 32 includes twelfth resistor R12 and first capacitor C1, and the described 12nd
One end of resistance R12 connects the other end of the tenth resistance R10, and the other end of the twelfth resistor R12 connects first capacitor C1
One end and partial pressure unit 33, the first capacitor C1 the other end ground connection.
Specifically, the charhing unit 32 substantially plays time-lag actions, and the time of charging is the time being delayed, and described the
12 resistance R12 and first capacitor C1 form RC charging circuit, after charging complete again output voltage to partial pressure unit 33, charging
Time can be designed according to actual needs, and in the present embodiment, the resistance value of twelfth resistor R12 is 1M Ω, the first capacitor
The capacitance of C1 is 10 μ f.
Please continue to refer to Fig. 2, the partial pressure unit 33 include thirteenth resistor R13 and the 14th resistance R14, the described tenth
The other end of one end connection twelfth resistor R12 of three resistance R13, the other end connection the 14th of the thirteenth resistor R13
One end of resistance R14 and reset signal output unit 34, the other end ground connection of the 14th resistance R14.
Specifically, the partial pressure unit 33 avoids the circuit excessive pressure damages of rear class, partial pressure unit 33 for being divided
It is made of two resistance (thirteenth resistor R13 and the 14th resistance R14), the voltage output after partial pressure is defeated to reset signal
Unit 34 out.
Please continue to refer to Fig. 2, the reset signal output unit 34 include third transistor Q3, the 15th resistance R15 and
The other end of the base stage connection thirteenth resistor R13 of 16th resistance R16, the third transistor Q3, the third transistor
The emitter of Q3 is grounded, and the collector of the third transistor Q3 connects one end and the 16th resistance R16 of the 15th resistance R15
One end, the other end of the 15th resistance R15 connects 5V power supply, and the other end of the 16th resistance R16 connects control
The reset signal input terminal and power supply module 5 of chip 1.
Specifically, the reset signal output unit 34 is used for output reset signal, carries out by partial pressure unit 33
After partial pressure, the base stage of voltage output to third transistor Q3, when third transistor Q3 reaches its conducting voltage, i.e., output resets
Reset function can be realized in signal to the reset signal input terminal for controlling chip 1, the control chip 1, it is preferred that the third
Triode Q3 is NPN type triode.
Please continue to refer to Fig. 2, the power supply module 5 includes the 4th triode Q4, the 17th resistance R17, the 18th resistance
R18, the 19th resistance R19, the 20th resistance R20, the second capacitor C2 and the second metal-oxide-semiconductor M2, the base of the 4th triode Q4
Pole connects the other end of the 16th resistance R16, and the collector of the 4th triode Q4 connects one end of the 20th resistance R20
With one end of the 17th resistance R17 and one end of the 18th resistance R18, the other end and the four or three of the 18th resistance R18
The emitter of pole pipe Q4 is grounded, and the other end of the 20th resistance R20 connects 5V power supply, the 17th resistance R17's
The other end connects one end of the second capacitor C2 and the grid of the second metal-oxide-semiconductor M2, the second electricity of drain electrode connection of the second metal-oxide-semiconductor M2
Hold the other end of C2 and the power control terminal of control chip 1, the source electrode of the second metal-oxide-semiconductor M2 connects the 19th resistance R19's
One end and power output end, the other end ground connection of the 19th resistance R19.
Specifically, after control chip 1 receives reset signal, power control terminal is controlled according to the reset signal
Power supply module 5 is no longer powered, and in other words, controls chip 1 after receiving reset signal, and the second metal-oxide-semiconductor M2 shutdown makes its electricity
Source control terminal (POWER_IN) no longer output voltage, and then power output end (POWER_OUT) is caused to export without power supply, power supply
Module 5 disconnects power supply；After resetting successfully, reset key is released, and is inputted without push button signalling, and reset circuit no longer works,
Power supply module 5 restores normal function, re-powers, to realize the reset of TV.
Based on above-mentioned reset circuit, the utility model also correspondingly provides a kind of television set, including control chip and such as
Reset circuit described in above-described embodiment, the reset circuit connects the reset signal input terminal of the control chip, due to upper
Text is described in detail reset circuit, and details are not described herein.
In conclusion in reset circuit provided by the utility model and television set, the control of the reset circuit and television set
The connection of coremaking piece, including reset circuit opening module, reset signal output module, reset key and power supply module, when TV is dead
When machine, the reset circuit opening module opens reset circuit, when reset key persistently presses preset time, the reset letter
To the control chip, the control chip controls power supply mould after receiving reset signal for number output module output reset signal
The crash reset to realize television set is restarted in block power supply.The utility model opens reset electricity by directlying adopt single-button mode
Road, it is simple and convenient, and security performance is high, be not in as hard reset and caused by risk.
It is understood that for those of ordinary skills, can with technical solution according to the present utility model and
The design of its utility model is subject to equivalent substitution or change, and all these changes or replacement all should belong to appended by the utility model
Scope of protection of the claims.
Claims (10)
1. a kind of reset circuit is connect with the control chip of television set, which is characterized in that including reset circuit opening module, again
Position signal output module, reset key and power supply module, when TV crashes, the reset circuit opening module, which is opened, resets electricity
Road, when reset key persistently presses preset time, the reset signal output module output reset signal to the control core
Piece, the control chip, which control power supply module after receiving reset signal and powers, restarts crash reset to realize television set.
2. reset circuit according to claim 1, which is characterized in that the reset signal output module includes push button signalling
Input unit, charhing unit, partial pressure unit and reset signal output unit, after reset key presses preset time, the key
Signal input unit conducting, and the charhing unit is driven to charge, pass through described point after the charhing unit charging
Make the reset signal output unit that output reset signal be connected to controlling chip after pressure unit partial pressure.
3. reset circuit according to claim 2, which is characterized in that the reset circuit opening module includes the first electricity
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the first triode and the first metal-oxide-semiconductor, the one of the first resistor
The enable end of end connection control chip and one end of second resistance, the base stage of the first triode of the other end of the first resistor,
One end of the emitter of first triode, one end of second resistance and the 5th resistance is grounded, first triode
Collector connect 3rd resistor one end, the other end of the 5th resistance and one end of the 4th resistance, the 3rd resistor it is another
End connection 3.3V power supply, the other end of the 4th resistance connect the grid of the first metal-oxide-semiconductor, and the drain electrode of first metal-oxide-semiconductor connects
3.3V power supply is connect, the source electrode of first metal-oxide-semiconductor connects one end of the 6th resistance, and the other end of the 6th resistance connects key
Signal input unit.
4. reset circuit according to claim 3, which is characterized in that the key signal input unit includes the 7th electricity
Resistance, the 8th resistance, the 9th resistance, the tenth resistance, eleventh resistor and the second triode, one end connection of the 7th resistance
3.3V power supply, the push button signalling output end and the 9th electricity that the other end of the 7th resistance passes through the 8th resistance connection control chip
One end of resistance, the other end of the 9th resistance connect the base stage of the second triode, the emitter connection of second triode
The other end of 6th resistance, the collector of second triode connect one end of the tenth resistance, the tenth resistance it is another
One end of end connection charhing unit and eleventh resistor, the other end ground connection of the eleventh resistor.
5. reset circuit according to claim 4, which is characterized in that the charhing unit includes twelfth resistor and first
Capacitor, one end of the twelfth resistor connect the other end of the tenth resistance, the other end connection first of the twelfth resistor
One end of capacitor and partial pressure unit, the other end ground connection of the first capacitor.
6. reset circuit according to claim 5, which is characterized in that the partial pressure unit includes thirteenth resistor and the tenth
Four resistance, the other end of one end connection twelfth resistor of the thirteenth resistor, the other end connection of the thirteenth resistor
One end of 14th resistance and reset signal output unit, the other end ground connection of the 14th resistance.
7. reset circuit according to claim 6, which is characterized in that the reset signal output unit includes the three or three pole
Pipe, the 15th resistance and the 16th resistance, the other end of the base stage connection thirteenth resistor of the third transistor, the third
The emitter of triode is grounded, the collector of the third transistor connect the 15th resistance one end and the 16th resistance one
End, the other end of the 15th resistance connect 5V power supply, the reset of the other end connection control chip of the 16th resistance
Signal input part and power supply module.
8. reset circuit according to claim 7, which is characterized in that the power supply module includes the 4th triode, the tenth
Seven resistance, the 18th resistance, the 19th resistance, the 20th resistance, the second capacitor and the second metal-oxide-semiconductor, the 4th triode
Base stage connects the other end of the 16th resistance, and the collector of the 4th triode connects one end and the tenth of the 20th resistance
One end of one end of seven resistance and the 18th resistance, the other end of the 18th resistance and the emitter of the 4th triode connect
Ground, the other end of the 20th resistance connect 5V power supply, and the other end of the 17th resistance connects one end of the second capacitor
With the grid of the second metal-oxide-semiconductor, the power supply control of the other end and control chip of drain electrode the second capacitor of connection of second metal-oxide-semiconductor
The source electrode at end, second metal-oxide-semiconductor connects one end and the power output end of the 19th resistance, the other end of the 19th resistance
Ground connection.
9. reset circuit according to claim 8, which is characterized in that first metal-oxide-semiconductor and the second metal-oxide-semiconductor are NMOS
Pipe, first triode, third transistor and the 4th triode are NPN type triode, and second triode is positive-negative-positive
Triode.
10. a kind of television set, including control chip, which is characterized in that the television set further includes as claim 1-9 is any one
Reset circuit described in, the reset circuit connect the reset signal input terminal of the control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821842122.5U CN209435361U (en) | 2018-11-09 | 2018-11-09 | A kind of reset circuit and television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821842122.5U CN209435361U (en) | 2018-11-09 | 2018-11-09 | A kind of reset circuit and television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209435361U true CN209435361U (en) | 2019-09-24 |
Family
ID=67968095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821842122.5U Active CN209435361U (en) | 2018-11-09 | 2018-11-09 | A kind of reset circuit and television set |
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| CN (1) | CN209435361U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113885683A (en) * | 2020-07-03 | 2022-01-04 | 深圳市万普拉斯科技有限公司 | Intelligent terminal, hard reset control method and device and computer equipment |
| WO2024007835A1 (en) * | 2022-07-08 | 2024-01-11 | 深之蓝(天津)水下智能科技有限公司 | Power source turn-on/turn-off control circuit and system for reset switch |
-
2018
- 2018-11-09 CN CN201821842122.5U patent/CN209435361U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113885683A (en) * | 2020-07-03 | 2022-01-04 | 深圳市万普拉斯科技有限公司 | Intelligent terminal, hard reset control method and device and computer equipment |
| WO2024007835A1 (en) * | 2022-07-08 | 2024-01-11 | 深之蓝(天津)水下智能科技有限公司 | Power source turn-on/turn-off control circuit and system for reset switch |
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