CN106028149A - Discharge circuit and discharge method for set top box during outage - Google Patents
Discharge circuit and discharge method for set top box during outage Download PDFInfo
- Publication number
- CN106028149A CN106028149A CN201610451610.2A CN201610451610A CN106028149A CN 106028149 A CN106028149 A CN 106028149A CN 201610451610 A CN201610451610 A CN 201610451610A CN 106028149 A CN106028149 A CN 106028149A
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- Prior art keywords
- top box
- set top
- power
- transistor
- voltage
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/443—OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
- H04N21/4436—Power management, e.g. shutting down unused components of the receiver
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention relates to a discharge circuit and method for a set top box during outage. The method comprises the steps: monitoring a working state of the set top box, judging whether the set top box is in an outage state, forming negative voltage in a discharge unit when the set top box is in the outage state, and increasing voltage difference between the discharge unit and a capacitive load or a power supply bus, thereby facilitating electric charges to further quickly transfer, accelerating discharge, implementing quick discharge, preventing the set top box from starting up abnormally or failing to start up, ensuring that the set top box can normally work, and ensuring performances of the set top box.
Description
Technical field
The present invention relates to digital television devices, particularly relate to a kind of Set Top Box power-off discharge circuit and charging method.
Background technology
Set Top Box is common digital television devices, is widely used in each family.
Set Top Box, as the electronic equipment of a kind of high-end intelligence, can use the capacitive loads such as electric capacity in circuit,
Capacitive load is when shutting down power-off, and electric charge will not disappear at once, causes the voltage on circuit to disappear rapidly
Lose, but slowly decline, it is impossible to be rapidly completed electric discharge.When Set Top Box is started shooting again, if electric discharge does not has
Completing, the residual voltage of circuit is the biggest, then will affect the voltage electric sequence of circuit, cause machine
Top box starts abnormal or failure so that Set Top Box cisco unity malfunction, has a strong impact on the performance of Set Top Box.
Summary of the invention
In view of this, it is necessary to electric discharge can not be rapidly completed during for the shutdown power-off of above-mentioned Set Top Box, cause weight
Open abnormal or failed problem, it is provided that a kind of Set Top Box power-off discharge circuit and charging method.
The present invention provide a kind of Set Top Box power-off discharge circuit, including energy-storage units, outage detection unit,
Negative pressure unit and discharge cell；Described energy-storage units is connected with power bus and outage detection unit, at machine
By obtaining electric energy on power bus and storing during top box work energising, and it is described power-off when Set Top Box power-off
Detector unit provides electric energy for outage detection cell operation, described outage detection unit and energy-storage units, power supply
Bus and negative pressure unit connect, and the voltage of detection power bus judges whether Set Top Box is off-position, and
According to judged result, described negative pressure unit is controlled, described negative pressure unit and power bus, outage detection
Unit and discharge cell connect, and accept the control of described outage detection unit when Set Top Box is off-position,
At discharge cell, form negative voltage, increase the voltage difference between discharge cell and capacitive load or power bus.
In one of which embodiment, described outage detection unit detection power bus voltage, if voltage
Higher than setting threshold value, then judging that Set Top Box is in normal power supply state, output high-level control signal is to described
Negative pressure unit；If detecting, voltage is less than setting threshold value, then deteminate machine top box is in off-position, exports low
Level controling signal is to described negative pressure unit.
In one of which embodiment, when described negative pressure unit receives high-level control signal, by supplying
Electricity bus obtains electric energy and stores；Utilize the electric energy of storage at discharge cell when receiving low level control signal
Place forms negative voltage.
In one of which embodiment, described negative pressure unit includes the first resistance, the second resistance, energy storage
Electric capacity, the first transistor, transistor seconds and third transistor；Described first resistance one end connects power-off inspection
Surveying unit, the other end connects base stage and the base stage of transistor seconds, the described the first transistor of the first transistor
For NPN transistor, colelctor electrode connects power bus, and emitter stage connects emitter stage and the energy storage of transistor seconds
Electric capacity one end, transistor seconds is PNP transistor, grounded collector, and third transistor is NPN crystal
Pipe, colelctor electrode connects discharge cell and the storage capacitor other end, grounded emitter, and base stage connects the second resistance
One end, the second resistance other end connects outage detection unit.
In one of which embodiment, described discharge cell ends when Set Top Box normal power supply state,
Turn on when Set Top Box is in off-position.
In one of which embodiment, described discharge cell includes the 4th transistor and the 3rd resistance；Institute
Stating the 4th transistor is PNP transistor, colelctor electrode connect the colelctor electrode of third transistor and storage capacitor another
End, emitter stage connects power bus, and base stage connects described 3rd resistance one end, and the 3rd resistance other end accepts
Described outage detection unit controls.
A kind of Set Top Box power-off charging method that the present invention provides, comprises the steps:
Whether S10: monitoring machine top box is off-position；
S20: if Set Top Box is in off-position, then form negative voltage at discharge cell, increase discharge cell
And the voltage difference between capacitive load or power bus.
In one of which embodiment, described step S10 is particularly as follows: power always by testing machine top box
The voltage of line comes whether monitoring machine top box is off-position.
In one of which embodiment, described step S10 is particularly as follows: detection power bus VCC is electric
Pressure, if voltage is higher than setting threshold value, then judges that Set Top Box is in normal power supply state, and output high level controls
Signal；If detecting, voltage is less than setting threshold value, then deteminate machine top box is in off-position, output low level
Control signal.
Set Top Box power-off discharge circuit of the present invention and method, the duty deteminate machine top box of monitoring machine top box is
No for off-position, form negative voltage when Set Top Box is off-position at discharge cell, increase discharge cell
And the voltage difference between capacitive load or power bus, so that electric charge more quickly shifts, accelerates electric discharge
Speed, it is achieved repid discharge, it is to avoid Set Top Box starts abnormal or failure so that Set Top Box can normal work
Make, it is ensured that the performance of Set Top Box.
Accompanying drawing explanation
Fig. 1 is the structure chart of the Set Top Box power-off discharge circuit in an embodiment；
Fig. 2 is the concrete structure figure of the Set Top Box power-off discharge circuit in an embodiment；
Fig. 3 is the flow chart of the Set Top Box power-off charging method in an embodiment.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein
In order to explain the present invention, it is not intended to limit the present invention.
Set Top Box after shutdown power-off, the capacitive load in circuit and Set Top Box power bus or discharge cell
Between can there is a barrier, being considered as is a barrier resistance, and barrier resistance can hinder the transfer of electronics,
The speed of releasing affecting residual voltage makes the velocity of discharge slack-off.
Under bigger pressure reduction electric field action, the transfer velocity of electronics can be greatly improved, it is possible to increase electric discharge speed
Degree, the present invention is around this principle, it is provided that a kind of Set Top Box power-off discharge circuit, produces a negative supply also
There is provided a negative electricity to have a meeting, an audience, etc. well under one's control and be superimposed on former discharge cell after shut down, so discharge cell and capacitive load (or
Power bus) between form a bigger voltage difference and electric field, make electric charge more quickly shift, thus
Realize repid discharge.
Concrete, Fig. 1 is the structure chart of the Set Top Box power-off discharge circuit in an embodiment, and Fig. 2 is one
The concrete structure figure of the Set Top Box power-off discharge circuit in individual embodiment, in conjunction with Fig. 1 and Fig. 2, this Set Top Box
Power-off discharge circuit includes: energy-storage units 100, outage detection unit 200, negative pressure unit 300 and electric discharge
Unit 400.Energy-storage units 100 is connected with power bus VCC and outage detection unit 200, at Set Top Box
By obtaining electric energy on power bus VCC and storing during work energising, and it is outage detection when Set Top Box power-off
Unit 200 provides electric energy to work for outage detection unit 200.Outage detection unit 200 and energy-storage units 100,
Power bus VCC and negative pressure unit 300 connect, and the voltage of detection power bus VCC judges Set Top Box
Whether it is off-position, and according to judged result, negative pressure unit 300 is controlled.Negative pressure unit 300 with
Power bus VCC, outage detection unit 200 and discharge cell 400 connect, and are off-position at Set Top Box
Time accept the control of outage detection unit 200, at discharge cell 400, form negative voltage, increase electric discharge single
Voltage difference between unit 400 and capacitive load or power bus VCC, accelerates the electric discharge speed of discharge cell 400
Degree.
Further, outage detection unit 200 detects power bus VCC voltage, if voltage is higher than setting threshold
Value, then judge that Set Top Box is in normal power supply state, and output high-level control signal is to negative pressure unit 300；
If detecting, voltage is less than setting threshold value, then deteminate machine top box is in off-position, and output low level controls letter
Number to negative pressure unit 300.
When negative pressure unit 300 receives high-level control signal, power bus VCC obtain electric energy and store；
The electric energy of storage is utilized to form negative voltage at discharge cell 400 when receiving low level control signal.
Further, negative pressure unit 300 include the first resistance R1, the second resistance R2, storage capacitor C1,
The first transistor Q1, transistor seconds Q2 and third transistor Q3.First resistance R1 one end connects power-off
Detector unit 200, the other end connects base stage B and base stage B of transistor seconds Q2 of the first transistor Q1.
The first transistor Q1 is NPN transistor, and colelctor electrode C connects power bus VCC, and emitter E connects
The emitter E of transistor seconds Q2 and storage capacitor C1 one end.Transistor seconds Q2 is PNP transistor,
Colelctor electrode C ground connection.Third transistor Q3 is NPN transistor, and colelctor electrode C connects discharge cell 400
With the storage capacitor C1 other end, emitter E ground connection, base stage B connects second resistance R2 one end.Second
The resistance R2 other end connects outage detection unit 200.
Discharge cell 400 ends when Set Top Box normal power supply state, leads when Set Top Box is in off-position
Logical.Discharge cell 400 includes the 4th transistor Q4 and the 3rd resistance R3.4th transistor Q4 is PNP
Transistor, colelctor electrode C connects colelctor electrode C and the storage capacitor C1 other end of third transistor Q3, sends out
Emitter-base bandgap grading E connects power bus VCC, and base stage B connects the 3rd resistance R3 one end, the 3rd resistance R3 another
Termination is controlled by outage detection unit 200.
This Set Top Box power-off discharge circuit, is in normal power supply state, outage detection unit 200 at Set Top Box
During output high-level control signal, transistor seconds Q2 ends, the first transistor Q1 and third transistor
Q3 saturation conduction, power bus VCC is storage capacitor C1 charging.When Set Top Box is in off-position,
During outage detection unit 200 output low level control signal, the first transistor Q1 and third transistor Q3 are cut
Only, transistor seconds Q2 turns on, one end ground connection positively charged for storage capacitor C1, and storage capacitor C1 carries
The other end of negative electricity relative to ground presents negative voltage, thus forms negative voltage at discharge cell 400, accelerates
Discharge cell 400, to capacitive load or the electric discharge of power bus VCC, is rapidly completed electric discharge.
This kind of Set Top Box power-off discharge circuit, whether the duty deteminate machine top box of monitoring machine top box is power-off
State, forms negative voltage when Set Top Box is off-position at discharge cell, increases discharge cell and bears with capacitive
Voltage difference between load or power bus, so that electric charge more quickly shifts, accelerates the velocity of discharge, real
Existing repid discharge, it is to avoid Set Top Box starts abnormal or failure so that Set Top Box can normally work, it is ensured that
The performance of Set Top Box.
Meanwhile, the present invention also provides for a kind of Set Top Box power-off charging method, as it is shown on figure 3, the method includes
Following steps:
Whether S10: monitoring machine top box is off-position.
In this step, come whether monitoring machine top box is off-position by the voltage of testing machine top box power bus.
Further, detect power bus VCC voltage, if voltage is higher than setting threshold value, then judge at Set Top Box
In normal power supply state, export high-level control signal；If detecting, voltage is less than setting threshold value, then judge
Set Top Box is in off-position, output low level control signal.
S20: if Set Top Box is in off-position, then form negative voltage at discharge cell, increase discharge cell
And the voltage difference between capacitive load or power bus.
When Set Top Box is in off-position, forming negative voltage at discharge cell, negative voltage can increase to be put
Voltage difference between electric unit and capacitive load or power bus, accelerates electric discharge, thus is rapidly completed electric discharge.
This kind of Set Top Box power-off charging method, whether the duty deteminate machine top box of monitoring machine top box is power-off
State, forms negative voltage when Set Top Box is off-position at discharge cell, increases discharge cell and bears with capacitive
Voltage difference between load or power bus, so that electric charge more quickly shifts, accelerates the velocity of discharge, real
Existing repid discharge, it is to avoid Set Top Box starts abnormal or failure so that Set Top Box can normally work, it is ensured that
The performance of Set Top Box.
Set Top Box power-off discharge circuit of the present invention and method, the duty deteminate machine top box of monitoring machine top box is
No for off-position, form negative voltage when Set Top Box is off-position at discharge cell, increase discharge cell
And the voltage difference between capacitive load or power bus, so that electric charge more quickly shifts, accelerates electric discharge
Speed, it is achieved repid discharge, it is to avoid Set Top Box starts abnormal or failure so that Set Top Box can normal work
Make, it is ensured that the performance of Set Top Box.
These are only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's
Any amendment, equivalent and the improvement etc. made within spirit and principle, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (9)
1. a Set Top Box power-off discharge circuit, it is characterised in that include energy-storage units, outage detection unit,
Negative pressure unit and discharge cell；Described energy-storage units is connected with power bus and outage detection unit, at machine
By obtaining electric energy on power bus and storing during top box work energising, and it is described power-off when Set Top Box power-off
Detector unit provides electric energy for outage detection cell operation, described outage detection unit and energy-storage units, power supply
Bus and negative pressure unit connect, and the voltage of detection power bus judges whether Set Top Box is off-position, and
According to judged result, described negative pressure unit is controlled, described negative pressure unit and power bus, outage detection
Unit and discharge cell connect, and accept the control of described outage detection unit when Set Top Box is off-position,
At discharge cell, form negative voltage, increase the voltage difference between discharge cell and capacitive load or power bus.
Set Top Box power-off discharge circuit the most according to claim 1, it is characterised in that described power-off is examined
Survey unit detection power bus voltage, if voltage is higher than setting threshold value, then judge that Set Top Box is in normal power supply
State, output high-level control signal is to described negative pressure unit；If detecting, voltage is less than setting threshold value, then
Deteminate machine top box is in off-position, and output low level controls signal to described negative pressure unit.
Set Top Box power-off discharge circuit the most according to claim 2, it is characterised in that described negative pressure list
When unit receives high-level control signal, power bus obtain electric energy and store；Receive low level control
The electric energy of storage is utilized to form negative voltage at discharge cell during signal.
Set Top Box power-off discharge circuit the most according to claim 3, it is characterised in that described negative pressure list
Unit includes the first resistance, the second resistance, storage capacitor, the first transistor, transistor seconds and the 3rd crystal
Pipe；Described first resistance one end connects outage detection unit, and the other end connects the base stage and the of the first transistor
The base stage of two-transistor, described the first transistor is NPN transistor, and colelctor electrode connects power bus, launches
Pole connects emitter stage and storage capacitor one end of transistor seconds, and transistor seconds is PNP transistor, current collection
Pole ground connection, third transistor is NPN transistor, and colelctor electrode connects discharge cell and the storage capacitor other end,
Grounded emitter, base stage connects second resistance one end, and the second resistance other end connects outage detection unit.
Set Top Box power-off discharge circuit the most according to claim 4, it is characterised in that described electric discharge list
Unit ends when Set Top Box normal power supply state, turns on when Set Top Box is in off-position.
Set Top Box power-off discharge circuit the most according to claim 5, it is characterised in that described electric discharge list
Unit includes the 4th transistor and the 3rd resistance；Described 4th transistor is PNP transistor, and colelctor electrode connects the
The colelctor electrode of three transistors and the storage capacitor other end, emitter stage connects power bus, and base stage connects described the
Three resistance one end, the 3rd resistance other end accepts described outage detection unit and controls.
7. a Set Top Box power-off charging method, it is characterised in that comprise the steps:
Whether S10: monitoring machine top box is off-position；
S20: if Set Top Box is in off-position, then form negative voltage at discharge cell, increase discharge cell
And the voltage difference between capacitive load or power bus.
Set Top Box power-off charging method the most according to claim 7, it is characterised in that described step
By the voltage of testing machine top box power bus, S10 is particularly as follows: come whether monitoring machine top box is off-position.
Set Top Box power-off charging method the most according to claim 8, it is characterised in that described step
S10, particularly as follows: detection power bus VCC voltage, if voltage is higher than setting threshold value, then judges at Set Top Box
In normal power supply state, export high-level control signal；If detecting, voltage is less than setting threshold value, then judge
Set Top Box is in off-position, output low level control signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451610.2A CN106028149B (en) | 2016-06-21 | 2016-06-21 | A kind of set-top box power-off discharge circuit and charging method |
| PCT/CN2017/080425 WO2017219737A1 (en) | 2016-06-21 | 2017-04-13 | Discharge circuit and discharge method for set-top box during poweroff |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451610.2A CN106028149B (en) | 2016-06-21 | 2016-06-21 | A kind of set-top box power-off discharge circuit and charging method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106028149A true CN106028149A (en) | 2016-10-12 |
| CN106028149B CN106028149B (en) | 2019-07-09 |
Family
ID=57087138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610451610.2A Expired - Fee Related CN106028149B (en) | 2016-06-21 | 2016-06-21 | A kind of set-top box power-off discharge circuit and charging method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106028149B (en) |
| WO (1) | WO2017219737A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219737A1 (en) * | 2016-06-21 | 2017-12-28 | 深圳市九洲电器有限公司 | Discharge circuit and discharge method for set-top box during poweroff |
| CN111670527A (en) * | 2019-01-09 | 2020-09-15 | 深圳市大疆创新科技有限公司 | Discharging circuit for distance measuring device, distributed radar system and movable platform |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930219A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Discharge control circuit and computer |
| US20110235455A1 (en) * | 2010-03-29 | 2011-09-29 | Micron Technology, Inc. | Voltage regulators, amplifiers, memory devices and methods |
| CN102594111A (en) * | 2012-02-24 | 2012-07-18 | 中兴通讯股份有限公司 | Quick discharge circuit |
| US8339056B1 (en) * | 2010-06-17 | 2012-12-25 | Universal Lighting Technologies, Inc. | Lamp ballast with protection circuit for input arcing and line interruption |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7936189B2 (en) * | 2008-12-04 | 2011-05-03 | Stmicroelectronics S.R.L. | Driver circuit and method for reducing electromagnetic interference |
| CN202602274U (en) * | 2012-05-08 | 2012-12-12 | 北京益弘泰科技发展有限责任公司 | Load discharge circuit suitable for power supply system |
| CN104122968A (en) * | 2013-04-24 | 2014-10-29 | 昆达电脑科技(昆山)有限公司 | Quick discharging device |
| CN104518486A (en) * | 2013-09-30 | 2015-04-15 | 上海贝尔股份有限公司 | Discharge circuit for quickly discharging capacitor after powering off |
| CN106028149B (en) * | 2016-06-21 | 2019-07-09 | 深圳市九洲电器有限公司 | A kind of set-top box power-off discharge circuit and charging method |
-
2016
- 2016-06-21 CN CN201610451610.2A patent/CN106028149B/en not_active Expired - Fee Related
-
2017
- 2017-04-13 WO PCT/CN2017/080425 patent/WO2017219737A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101930219A (en) * | 2009-06-22 | 2010-12-29 | 研祥智能科技股份有限公司 | Discharge control circuit and computer |
| US20110235455A1 (en) * | 2010-03-29 | 2011-09-29 | Micron Technology, Inc. | Voltage regulators, amplifiers, memory devices and methods |
| US8339056B1 (en) * | 2010-06-17 | 2012-12-25 | Universal Lighting Technologies, Inc. | Lamp ballast with protection circuit for input arcing and line interruption |
| CN102594111A (en) * | 2012-02-24 | 2012-07-18 | 中兴通讯股份有限公司 | Quick discharge circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219737A1 (en) * | 2016-06-21 | 2017-12-28 | 深圳市九洲电器有限公司 | Discharge circuit and discharge method for set-top box during poweroff |
| CN111670527A (en) * | 2019-01-09 | 2020-09-15 | 深圳市大疆创新科技有限公司 | Discharging circuit for distance measuring device, distributed radar system and movable platform |
| CN111670527B (en) * | 2019-01-09 | 2024-06-11 | 深圳市大疆创新科技有限公司 | Discharge circuit for distance measuring device, distributed radar system and movable platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106028149B (en) | 2019-07-09 |
| WO2017219737A1 (en) | 2017-12-28 |
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