CN107834842A - The anti-clutter circuit and television set of a kind of while powered TV set and set top box - Google Patents
The anti-clutter circuit and television set of a kind of while powered TV set and set top box Download PDFInfo
- Publication number
- CN107834842A CN107834842A CN201711126255.2A CN201711126255A CN107834842A CN 107834842 A CN107834842 A CN 107834842A CN 201711126255 A CN201711126255 A CN 201711126255A CN 107834842 A CN107834842 A CN 107834842A
- Authority
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- China
- Prior art keywords
- top box
- set top
- powered
- supply
- electric capacity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
- H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for dc applications
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filters And Equalizers (AREA)
Abstract
The anti-clutter circuit of provided by the invention a kind of while powered TV set and set top box, and the television set with the anti-clutter circuit, can be when television set and other electronic products be powered using external direct current power supply at the same time, with counnter attack connection function, with overcurrent protection mechanism, prevent from damaging electric current because electric current is too high, even television set and electric product, the electric power thus supplied of external electrical product can additionally be controlled, external electrical product can be supplied electricity in the case of must smoothly being powered meeting television set, more preferably, it can isolate the high-frequency crosstalk of television set and external electrical product, solves the problems such as picture interference.
Description
【Technical field】
The invention belongs to TV technology, more particularly to the anti-clutter circuit and electricity of a kind of while powered TV set and set top box
Depending on machine.
【Technical background】
It is unstable due to some areas mains-supplied voltage, therefore local user can be supplied using carry out electron product to battery
Electricity, but excessive electronic product uses simultaneously in the case of without using safeguard procedures, easily there is various unpredictable ask
Topic, such as operate entanglement, interference.When being powered using battery to television set and set top box simultaneously, similarly occur above-mentioned
Problem, such as High-frequency Interference, the normal work of television set and set top box is influenceed, influences viewing effect.
For the above situation, a solution is we provided.
【The content of the invention】
The purpose of the present invention is to be overcome the deficiencies in the prior art, there is provided a kind of while powered TV set and set top box it is anti-
Circuit, and its television set are disturbed, there is anti-reverse mechanism and overcurrent protection mechanism, the height of isolation television set and external electrical product
Frequency crosstalk, solves the problems such as picture interference.
In order to solve above-mentioned technical problem, the present invention takes following technical proposals：
The anti-clutter circuit of a kind of while powered TV set and set top box, includes DC supply input, and respectively with directly
The first supply line and the second supply line of power input connection are flowed, wherein DC supply input is connected with dc source
And receive the power supply of dc source；
The first described supply line includes TV SKD output end, and is connected to DC supply input and television set
The second filtration module between mainboard output end, described TV SKD output end are connected with TV SKD and supply power to electricity
Depending on mainboard；
The second described supply line includes set top box power output end, is sequentially connected to DC supply input and set top box
Switch control module and High frequency filter module between power output end, and the TV MCU being connected with switch control module；Institute
The set top box power output end stated is connected with set top box and supplies electricity to set top box；Described switch control module can recognize that TV
MCU signals judge whether TV SKD is powered, and conducting direct current power input and second supplies after TV SKD energization
Connection between electric line.
In further improvement project, described switch control module includes NPN type triode, the second field-effect
Pipe；The b poles of the NPN type triode are connected in TV MCU, its e pole ground connection；The d poles of second FET with it is straight
Flow power input connection, s poles are connected with High frequency filter module, g poles be connected to the c of NPN type triode extremely on.
In further improvement project, described High frequency filter module includes the inductance T1 and inductance being sequentially connected in series
T2, and the electric capacity C11 being connected in parallel between inductance T1 and inductance T2, the electric capacity being connected in parallel between switch control module and inductance T2
C8 and electric capacity C7, the electric capacity C10 and electrochemical capacitor C9 being connected in parallel between inductance T1 and set top box power output end；In the electric capacity
An electric capacity C6 and electric capacity C12 wherein pole, another pole of the electric capacity C6 and electric capacity C12 are connected between C11 two-stage
It is grounded respectively.
In further improvement project, in the DC supply input and the first supply line, the second supply line
Between be connected with counnter attack power supply module.
In further improvement project, described counnter attack power supply module includes the first FET, described first
The d poles of effect pipe are connected with DC supply input, and s poles are connected with the first supply line, the second supply line, g poles ground connection；
Protective resistance R1 is connected between the g poles and s poles of first FET, electric capacity is parallel with the protective resistance R1
C3。
In further improvement project, first is connected between the DC supply input and counnter attack power supply module
Filtration module.
In further improvement project, the first described filtration module and the second filtration module are filter capacitor, described
Filter capacitor composed in parallel by least one electrochemical capacitor and/or electric capacity.
In further improvement project, excessively stream guarantor is provided between the DC supply input and the first filtration module
Protect fuse wire.
In further improvement project, excessively stream is provided between the High frequency filter module and set top box power output end
Protect resettable fuse.
A kind of television set, it has the anti-dry of a kind of while powered TV set described in above-mentioned any one and set top box
Circuit to be disturbed, also includes power input joint, power supply out splice going splice, described DC supply input is power input joint,
Described set top box power output end is power supply out splice going splice.
Compared with prior art, the beneficial effects of the invention are as follows：A kind of powered TV set and machine simultaneously provided by the invention
The anti-clutter circuit of top box, and the television set with the anti-clutter circuit, can be in television set and other electronic products at the same time
When being powered using external direct current power supply, there is counnter attack connection function, there is overcurrent protection mechanism, prevent from damaging electricity because electric current is too high
Stream, or even television set and electric product, it can additionally control the electric power thus supplied of external electrical product, it is necessary to meeting television set
External electrical product smoothly can be supplied electricity in the case of power supply, more preferably, it can isolate television set and be produced with external electrical
The high-frequency crosstalk of product, solves the problems such as picture interference.
The present invention is further described with reference to the accompanying drawings and detailed description：
【Brief description of the drawings】
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the circuit diagram of the embodiment of the present invention.
【Embodiment】
A kind of television set, as shown in Figure 1, 2, it includes power input joint P1, power supply out splice going splice P2, also includes one kind
The anti-clutter circuit of powered TV set and set top box simultaneously；A kind of described while powered TV set and the anti-tampering electricity of set top box
Road, include DC supply input, and the first supply line being connected respectively with DC supply input and the second power supply
Circuit, wherein DC supply input and external direct current power supply（Such as battery）Connect and receive the power supply of dc source, it is described
DC supply input be power input joint P1, described set top box power output end is power supply out splice going splice P2；
The first described supply line includes TV SKD output end STB, and is connected to DC supply input and electricity
Depending on the second filtration module between mainboard output end STB, described TV SKD output end STB is connected with TV SKD
And supply power to TV SKD；Here, the second described filtration module is composed in parallel by filter capacitor C1, C2.
The second described supply line includes set top box power output end, is sequentially connected to DC supply input and machine
Switch control module and High frequency filter module between top box power output end, and the TV being connected with switch control module
MCU；Described set top box power output end is connected with set top box and supplies electricity to set top box；Described switch control module can recognize that
TV MCU signals judge whether TV SKD is powered, and the conducting direct current power input and the after TV SKD energization
Connection between two supply lines.
Described switch control module includes NPN type triode Q1, the second FET N1；The NPN type triode
Q1 b poles are connected in TV MCU, its e pole ground connection；The d poles of the second FET N1 connect with DC supply input
Connect, s poles are connected with High frequency filter module, g poles be connected to NPN type triode Q1 c extremely on.
Described High frequency filter module includes the inductance T1 and inductance T2 being sequentially connected in series, and is connected in parallel on inductance T1 and electricity
Feel the electric capacity C11 between T2, the electric capacity C8 and electric capacity C7 being connected in parallel between switch control module and inductance T2, be connected in parallel on inductance T1
Electric capacity C10 and electrochemical capacitor C9 between set top box power output end；It is connected between the two-stage of the electric capacity C11
An electric capacity C6 and electric capacity C12 wherein pole, another pole of the electric capacity C6 and electric capacity C12 are grounded respectively.
In this embodiment, power input joint P1 is the 12V power supply interfaces of television set external connection（It is connected with battery）, when
Power input joint P1（That is DC supply input）After inputting 12V DC electricity, two-way is separated, passes through the first supply line all the way
TV SKD output end STB lead to TV SKD and give television set power supply, after TV SKD is powered, software control is electric
Depending on MCU mouth output HIGH voltages, so, the b poles of the NPN type triode Q1 in switch control module obtain electric, c/e poles conducting, and c is extremely electric
Position is pulled low, and so as to drag down the g electrode potentials of the second FET N1 in switch control module, d/s poles are opened, electric current can from
For switch control module by entering High frequency filter module, it is miscellaneous to filter out high frequency through the inductance T1 in High frequency filter module and inductance T2
After ripple, finally from power supply out splice going splice P2（That is top box power output end）Output, used for electronic products such as external set top box.
In the present invention television set by with external direct current power supply（Battery）Connection power supply, is fed separately to TV SKD
It is upper for television set using, be supplied on set top box power output end and supply external set top box（Or other electronic products）Electric use is connect,
And ensure during set top box power output end is supplied in TV owner, it is necessary to controlled by switch control module
In the case that plate is powered, set top box power output end is conducted to just now, in addition, also needing to filter out high frequency through High frequency filter module miscellaneous
Ripple, isolate television set and set top box（Or other electronic products）Between high-frequency crosstalk, solve television set and set top box（Or other
Electronic product）Occur situation about disturbing when being powered at the same time by external direct current power supply, solve the problems such as picture interference, ensure
Television set and set top box（Or other electronic products）Normal use, rational in infrastructure, cost is low, convenient and practical.
In embodiment, in order to prevent external direct current power supply from reversal connection occur, high current is caused to burn the situation of circuit, in institute
State and counnter attack power supply module is connected between DC supply input and the first supply line, the second supply line, described counnter attack
Power supply module includes the first FET N2, and the d poles of the first FET N2 are connected with DC supply input, s poles
It is connected with the first supply line, the second supply line, g poles ground connection；Connect between the g poles and s poles of the first FET N2
Protective resistance R1 is connected to, electric capacity C3 is parallel with the protective resistance R1, in the case of external direct current power supply docking correctly,
Electric current is from power input joint P1（That is DC supply input）Input, is entered in counnter attack power supply module, counnter attack power supply module
In the first FET N2 g poles be in low potential, d/s poles are opened, turning circuit.
In embodiment, electric current is from power input joint P1（That is DC supply input）Input, enter counnter attack power supply
Before module, filtering process is first carried out, the first filtering mould is connected between the DC supply input and counnter attack power supply module
Block C5.The first filtration module C5 and the second filtration module in above-mentioned are filter capacitor, and described filter capacitor is by least one
Individual electrochemical capacitor and/or electric capacity compose in parallel.
In order to strengthen security performance, in order to prevent external direct current power supply from reversal connection occur, high current is caused to burn the feelings of circuit
Condition, overcurrent protection fuse wire F1, overcurrent protection are provided between the DC supply input and the first filtration module C5
Fuse wire F1 can fuse when through super-high-current, protection circuit and electric elements.
In embodiment, the anti-clutter circuit of a kind of while powered TV set and set top box is integrated in television set, and electric
Row output direct current again is received after external direct current power supply depending on machine, is limited to the hardware specification requirement of wire rod size and connector,
The DC current exported at present only accomplishes 1.5A, when electric current more than 1.5A will exceed connector bearing capacity, therefore, we
Need DC current of the limitation more than 1.5A to export, be provided between the High frequency filter module and set top box power output end
Stream protection resettable fuse F2, will automatically disconnect when the DC current after High frequency filter is more than 1.5A, prevents from exceeding
1.5A DC current output, still, when the DC current after High frequency filter is no more than 1.5A, overcurrent protection can recover to insure
Silk F2 will be reconnected, and recover output.
From the above, it is seen that the anti-clutter circuit of provided by the invention a kind of while powered TV set and set top box, and
Television set with the anti-clutter circuit, it can be powered at the same time using external direct current power supply in television set and other electronic products
When, there is counnter attack connection function, there is overcurrent protection mechanism, prevent from damaging electric current because electric current is too high, or even television set with electrically
Product, it can additionally control the electric power thus supplied of external electrical product, it is necessary to the side in the case where meeting that television set is smoothly powered
External electrical product can be supplied electricity to, more preferably, it can isolate the high-frequency crosstalk of television set and external electrical product, solve picture
The problems such as face is disturbed.
Although the present invention is described in detail with reference to above example, shown by the disclosure for those skilled in the art
And be clear to, and in the case where not departing from the principle of the invention of described claim restriction and scope, can be right
The present invention makes a variety of changes or changed.Therefore, the detailed description of the embodiment of the present disclosure is only used for explaining, rather than for limiting
The present invention, but it is defined by the subject-matter of the claims the scope of protection.
Claims (10)
- A kind of 1. anti-clutter circuit of while powered TV set and set top box, it is characterised in that include DC supply input, And the first supply line and the second supply line being connected respectively with DC supply input, wherein DC supply input with Dc source connects and receives the power supply of dc source；The first described supply line includes TV SKD output end, and is connected to DC supply input and television set The second filtration module between mainboard output end, described TV SKD output end are connected with TV SKD and supply power to electricity Depending on mainboard；The second described supply line includes set top box power output end, is sequentially connected to DC supply input and set top box Switch control module and High frequency filter module between power output end, and the TV MCU being connected with switch control module；Institute The set top box power output end stated is connected with set top box and supplies electricity to set top box；Described switch control module can recognize that TV MCU signals judge whether TV SKD is powered, and conducting direct current power input and second supplies after TV SKD energization Connection between electric line.
- 2. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that institute The switch control module stated includes NPN type triode, the second FET；The b poles of the NPN type triode are connected to TV On machine MCU, its e pole ground connection；The d poles of second FET are connected with DC supply input, s poles and High frequency filter module Connection, g poles be connected to the c of NPN type triode extremely on.
- 3. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that institute The High frequency filter module stated includes the inductance T1 and inductance T2 being sequentially connected in series, and is connected in parallel between inductance T1 and inductance T2 Electric capacity C11, the electric capacity C8 and electric capacity C7 being connected in parallel between switch control module and inductance T2, it is connected in parallel on inductance T1 and set top box electricity Electric capacity C10 and electrochemical capacitor C9 between source output terminal；Electric capacity C6 and electricity are connected between the two-stage of the electric capacity C11 Hold a C12 wherein pole, another pole of the electric capacity C6 and electric capacity C12 are grounded respectively.
- 4. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that Counnter attack power supply module is connected between the DC supply input and the first supply line, the second supply line.
- 5. the anti-clutter circuit of according to claim 4 a kind of while powered TV set and set top box, it is characterised in that institute The counnter attack power supply module stated includes the first FET, and the d poles of first FET are connected with DC supply input, S poles are connected with the first supply line, the second supply line, g poles ground connection；Connect between the g poles of first FET and s poles Protective resistance R1 is connected to, electric capacity C3 is parallel with the protective resistance R1.
- 6. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that The first filtration module is connected between the DC supply input and counnter attack power supply module.
- 7. the anti-clutter circuit of according to claim 5 a kind of while powered TV set and set top box, it is characterised in that institute The first filtration module and the second filtration module stated are filter capacitor, described filter capacitor by least one electrochemical capacitor and/ Or electric capacity composes in parallel.
- 8. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that Overcurrent protection fuse wire is provided between the DC supply input and the first filtration module.
- 9. the anti-clutter circuit of according to claim 1 a kind of while powered TV set and set top box, it is characterised in that Overcurrent protection resettable fuse is provided between the High frequency filter module and set top box power output end.
- 10. a kind of television set, it is characterised in that it has one kind while the TV of powering described in claim 1 to 9 any one The anti-clutter circuit of machine and set top box, also include power input joint, power supply out splice going splice, described DC supply input For power input joint, described set top box power output end is power supply out splice going splice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126255.2A CN107834842A (en) | 2017-11-15 | 2017-11-15 | The anti-clutter circuit and television set of a kind of while powered TV set and set top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711126255.2A CN107834842A (en) | 2017-11-15 | 2017-11-15 | The anti-clutter circuit and television set of a kind of while powered TV set and set top box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834842A true CN107834842A (en) | 2018-03-23 |
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ID=61655469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711126255.2A Pending CN107834842A (en) | 2017-11-15 | 2017-11-15 | The anti-clutter circuit and television set of a kind of while powered TV set and set top box |
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| Country | Link |
|---|---|
| CN (1) | CN107834842A (en) |
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| CN201349275Y (en) * | 2008-12-03 | 2009-11-18 | 康佳集团股份有限公司 | Intelligent power supply circuit |
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| CN201594876U (en) * | 2010-01-30 | 2010-09-29 | 青岛海信电器股份有限公司 | Interface power supply circuit and television with same |
| CN201789570U (en) * | 2010-06-28 | 2011-04-06 | 青岛海信电器股份有限公司 | Television supplying power to peripheries and power sharing system based on same |
| CN102065261A (en) * | 2010-11-12 | 2011-05-18 | 中国电信股份有限公司 | Set-top box and power supply control device and method thereof |
| CN203951590U (en) * | 2014-05-16 | 2014-11-19 | 成都三零凯天通信实业有限公司 | A kind of safe machine top box of being powered by USB interface |
| CN204290904U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Traffic filter |
| CN205987137U (en) * | 2016-08-30 | 2017-02-22 | 广州小百合信息技术有限公司 | TV supply circuit |
| CN207896870U (en) * | 2017-11-15 | 2018-09-21 | 珠海经济特区金品电器有限公司 | The anti-clutter circuit and television set of a kind of while powered TV set and set-top box |
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2017
- 2017-11-15 CN CN201711126255.2A patent/CN107834842A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201349275Y (en) * | 2008-12-03 | 2009-11-18 | 康佳集团股份有限公司 | Intelligent power supply circuit |
| CN101764966A (en) * | 2009-11-27 | 2010-06-30 | 康佳集团股份有限公司 | Method and system for controlling and connecting television and set-top box |
| CN201594876U (en) * | 2010-01-30 | 2010-09-29 | 青岛海信电器股份有限公司 | Interface power supply circuit and television with same |
| CN201789570U (en) * | 2010-06-28 | 2011-04-06 | 青岛海信电器股份有限公司 | Television supplying power to peripheries and power sharing system based on same |
| CN102065261A (en) * | 2010-11-12 | 2011-05-18 | 中国电信股份有限公司 | Set-top box and power supply control device and method thereof |
| CN203951590U (en) * | 2014-05-16 | 2014-11-19 | 成都三零凯天通信实业有限公司 | A kind of safe machine top box of being powered by USB interface |
| CN204290904U (en) * | 2014-11-20 | 2015-04-22 | 重庆大及电子科技有限公司 | Traffic filter |
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