CN208209613U - A kind of Video Controller power-down protection circuit - Google Patents
A kind of Video Controller power-down protection circuit Download PDFInfo
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- CN208209613U CN208209613U CN201820804583.7U CN201820804583U CN208209613U CN 208209613 U CN208209613 U CN 208209613U CN 201820804583 U CN201820804583 U CN 201820804583U CN 208209613 U CN208209613 U CN 208209613U
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Abstract
The utility model provides a kind of Video Controller power-down protection circuit, comprising: power supply, capacitance group circuit, the first power supply module, voltage detecting circuit, data storage circuitry；The energization input of capacitance group circuit is electrically connected to the output end of power supply, and capacitance group circuit includes at least two capacity cells being connected in parallel；The input terminal of first power supply module is electrically connected to the output end of power supply and the power supply output end of capacitance group circuit；The detection input of voltage detecting circuit is electrically connected to the output end of power supply, and the first output end of voltage detecting circuit is electrically connected to the first input end of data storage circuitry；Second input terminal of data storage circuitry is electrically connected to the first power supply module.By the technical solution of the utility model, the delay that power down occurs for detection power supply is reduced, is conducive to the reliability for improving data storage when power down occurs.
Description
Technical field
The utility model relates to technical field of power-down protection, in particular to a kind of Video Controller power down protection electricity
Road.
Background technique
In order to meet the individual demand of user, while the function of being continuously increased video equipment, it is also desirable to Yong Hu
A large amount of parameter is set when using video equipment, when video equipment is there is a situation where when power supply power down, if user does not have
Storing data in time will lead to video equipment and mistake occurs, influences the normal operation of video equipment, and therefore, video equipment needs
Carry out power down protection.It is usually utilized in shunt capacitance on the power module of video equipment, when power down occurs for video equipment,
Power supply power supply is replaced by capacitor in parallel, detection of power loss is carried out using the video frequency processing chip of video equipment itself, triggers power down
Protective program.
And in the related technology, on the one hand, due to video frequency processing chip can only be detect itself supply voltage it is whether abnormal,
And whether the supply voltage that can not detect video equipment occurs power down, and then when video frequency processing chip being caused to detect abnormal electrical power supply
There are certain delays.On the other hand, due to being the shunt capacitance on power module, when power down occurs for video equipment power module
When, capacitor is powered video equipment, and some nonessential electronic components in video equipment is caused also to consume on capacitor
Electric energy reduces the effective time of capacitances to supply power.
Summary of the invention
The utility model aims to solve at least in the prior art or one of technical problem present in the relevant technologies.
In response to the above problems, the present invention proposes a kind of Video Controller power-down protection circuits, advantageously reduce inspection
The delay that power down occurs for video equipment is surveyed, the effective time of capacitances to supply power in video equipment is improved, improves video equipment and fall
The reliability that data store when electric.
To achieve the goals above, the technical solution of the utility model provides a kind of Video Controller power down protection electricity
Road, comprising: power supply, capacitance group circuit, the first power supply module, voltage detecting circuit, data storage circuitry；Capacitance group circuit
Energization input be electrically connected to the output end of power supply, capacitance group circuit includes at least two capacitor members being connected in parallel
Part；The input terminal of first power supply module is electrically connected to the output end of power supply and the power supply output end of capacitance group circuit；Voltage
The detection input of detection circuit is electrically connected to the output end of power supply, and the first output end of voltage detecting circuit is electrically connected to
The first input end of data storage circuitry；Second input terminal of data storage circuitry is electrically connected to the first power supply module.
In any of the above-described technical solution, it is preferable that further include: one-way conduction circuit, the power supply of one-way conduction circuit
Input terminal is electrically connected to the output end of power supply, and the power output end of one-way conduction circuit is electrically connected to the first power supply module
Input terminal.
In any of the above-described technical solution, it is preferable that one-way conduction circuit is the rectification that two diodes in parallel are constituted
Circuit.
In any of the above-described technical solution, it is preferable that further include: the second power supply module, peripheral circuit；Second power supply mould
The third input terminal of block is electrically connected to the output end of power supply, and the 4th input terminal of the second power supply module is electrically connected to voltage inspection
The second output terminal of slowdown monitoring circuit, the second power supply module be provided with power down switch, power down switch for according to power-off signal by being closed
State switches to off-state；The energization input of peripheral circuit is electrically connected to the power supply output end of the second power supply module.
The utility model has the advantages that
Technical solution in the utility model is used for, and by the way that voltage detecting circuit is arranged, whether detection power supply occurs
Power down phenomenon reduces the delay of video equipment detection of power loss, and is sent by voltage detecting circuit to data storage circuitry
Point falls signal, improves the reliability of data storage circuitry storage video processing related data, improves video equipment power down guarantor
The speed of response of shield reduces a possibility that video equipment breaks down because of power down, is conducive to the usage experience for promoting user.
In the utility model, by the first power supply module and the second power supply module, when power down occurs for video equipment by the
Two power supply modules are disconnected from power supply circuit, so that capacitance group circuit is only powered to the first power supply module, reduce video equipment
The electric energy loss of middle peripheral circuit improves effective powers duration of the capacitance group circuit in video equipment power down, and then improves
The reliability of data storage circuitry storage related data, and by setting one-way conduction circuit, reduce the confession of capacitance group circuit
A possibility that capacitive electric energy is released by power supply when electric improves the utilization rate of capacitive electric energy, meanwhile, advantageously reduce view
Frequency equipment whether voltage detecting circuit detection power supply occurs the influence of power down, improves voltage detecting circuit detection power down
Reliability.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the schematic block diagram of the Video Controller power-down protection circuit of one embodiment according to the present utility model；
Fig. 2 is the schematic block diagram of the one-way conduction circuit of one embodiment according to the present utility model.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
In the following description, many details are elaborated in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
Embodiment:
The embodiments of the present invention are illustrated in conjunction with Fig. 1 to Fig. 2.
Fig. 1 shows the schematic block of the Video Controller power-down protection circuit of one embodiment according to the present utility model
Figure.
Fig. 2 is the schematic block diagram of the one-way conduction circuit of one embodiment according to the present utility model.
As shown in Figure 1, the Video Controller power-down protection circuit of one embodiment according to the present utility model, comprising: supply
Power supply 102, capacitance group circuit 108, the first power supply module 110, voltage detecting circuit 106, data storage circuitry 114；Capacitor
The energization input of group circuit 108 is electrically connected to the output end of power supply 102, and capacitance group circuit 108 includes at least two simultaneously
Join the capacity cell of connection；The input terminal of first power supply module 110 is electrically connected to the output end and capacitance group electricity of power supply 102
The power supply output end on road 108；The detection input of voltage detecting circuit 106 is electrically connected to the output end of power supply 102, voltage
First output end of detection circuit 106 is electrically connected to the first input end of data storage circuitry 114；Data storage circuitry 114
Second input terminal is electrically connected to the first power supply module 110.
Specifically, it when power supply 102 is normal, is powered from power supply 102 to video equipment, and to capacitance group circuit
108 chargings, corresponding, the power-off signal of voltage detecting circuit 106 is invalid state, and video equipment operates normally, wherein data
Storage circuit 114 may include video frequency processing chip and pin-saving chip.
When 102 power down of power supply, voltage detecting circuit 106 sends power-off signal to data storage circuitry 114, data
Storage circuit 114 stores the related data in video processing procedure, at this point, being passed through by capacitance group circuit 108 according to power-off signal
First power supply module 110 is powered to data storage circuitry 114.
In any of the above-described embodiment, it is preferable that further include: one-way conduction circuit 104, one-way conduction circuit 104
Power input is electrically connected to the output end of power supply 102, and the power output end of one-way conduction circuit 104 is electrically connected to first
The input terminal of power supply module 110.
In any of the above-described embodiment, it is preferable that one-way conduction circuit 104 is the rectification that two diodes in parallel are constituted
Circuit.
As shown in Fig. 2, one-way conduction circuit 104 is formed in parallel by diode D1 and diode D2, wherein diode D1 and
Power input of the anode of diode D2 as one-way conduction circuit 104, diode D1 are connected with the cathode of diode D2, make
For the power output end of one-way conduction circuit 104, also, the cathode of diode D1 and diode D2 pass through resistance R and ground wire phase
Even.
In any of the above-described embodiment, it is preferable that further include the second power supply module 112, peripheral circuit 116；Second supplies
The third input terminal of electric module 112 is electrically connected to the output end of power supply 102, and the 4th input terminal of the second power supply module is electrically connected
It is connected to the second output terminal of voltage detecting circuit 106, the second power supply module 112 is provided with power down switch, and power down switch is used for root
Off-state is switched to by closed state according to power-off signal；The energization input of peripheral circuit 116 is electrically connected to the second power supply mould
The power supply output end of block 112.
Specifically, the third input terminal of the second power supply module 112 is connected to power supply by one-way conduction circuit 104
Output end, when power supply 102 is normal, the power-off signal of voltage detecting circuit 106 is invalid state, the second power supply module
Power down switch in 112 is in closed state, and video equipment works normally, at this point, passing through one-way conduction electricity by power supply 102
Circuit 116 is powered to the periphery for road 104 and the second power supply module 112.
When 102 power down of power supply, voltage detecting circuit 106 sends power-off signal, falling in the second power supply module 112
Electric switch switches to off-state by closed state, at this point, only from capacitance group circuit 108 to the first power supply module in video equipment
110 power supplies, the second power supply module 112 and peripheral circuit are in off-position.
The technical solution of the utility model is had been described in detail above with reference to the accompanying drawings, the utility model proposes a kind of video controls
Device power-down protection circuit processed, comprising: power supply, capacitance group circuit, the first power supply module, voltage detecting circuit, data storage
Circuit；The energization input of capacitance group circuit is electrically connected to the output end of power supply, and capacitance group circuit includes at least two simultaneously
Join the capacity cell of connection；The input terminal of first power supply module is electrically connected to the confession of the output end and capacitance group circuit of power supply
Electricity output end；The detection input of voltage detecting circuit is electrically connected to the output end of power supply, and the first of voltage detecting circuit
Output end is electrically connected to the first input end of data storage circuitry；Second input terminal of data storage circuitry is electrically connected to the first confession
Electric module.By the technical solution of the utility model, the delay of video equipment detection of power loss is reduced, improves data storage electricity
Road stores the reliability of video processing related data, improves the speed of response of video equipment power down protection, reduces video and set
Standby a possibility that breaking down because of power down, is conducive to the usage experience for promoting user.
The shape of all parts in attached drawing is schematical, however not excluded that there is some difference with its true shape, attached
Figure is only used for being illustrated the principles of the present invention, is not intended to and limits the utility model.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, all any modification, equivalent substitution, improvement and etc. should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of Video Controller power-down protection circuit characterized by comprising
Power supply (102), capacitance group circuit (108), the first power supply module (110), voltage detecting circuit (106), data are deposited
Storage road (114)；
The energization input of the capacitance group circuit (108) is electrically connected to the output end of the power supply (102), the capacitor
Group circuit (108) includes at least two capacity cells being connected in parallel；
The input terminal of first power supply module (110) is electrically connected to the output end of the power supply (102) and described
The power supply output end of capacitance group circuit (108)；
The detection input of the voltage detecting circuit (106) is electrically connected to the output end of the power supply (102), institute
The first output end for stating voltage detecting circuit (106) is electrically connected to the first input end of the data storage circuitry (114)；
Second input terminal of the data storage circuitry (114) is electrically connected to first power supply module (110).
2. Video Controller power-down protection circuit according to claim 1, which is characterized in that further include:
The power input of one-way conduction circuit (104), the one-way conduction circuit (104) is electrically connected to the power supply
(102) power output end of the output end, the one-way conduction circuit (104) is electrically connected to first power supply module
(110) the input terminal.
3. Video Controller power-down protection circuit according to claim 2, which is characterized in that
The one-way conduction circuit (104) is the rectification circuit that two diodes in parallel are constituted.
4. Video Controller power-down protection circuit according to claim 1, which is characterized in that further include: the second power supply mould
Block (112), peripheral circuit (116)；
The third input terminal of second power supply module (112) is electrically connected to the output end of the power supply (102), institute
The 4th input terminal for stating the second power supply module is electrically connected to the second output terminal of the voltage detecting circuit (106), and described second
Power supply module (112) is provided with power down switch, and the power down switch is for switching to disconnection by closed state according to power-off signal
State；
The energization input of the peripheral circuit (116) is electrically connected to the power supply output end of second power supply module (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820804583.7U CN208209613U (en) | 2018-05-28 | 2018-05-28 | A kind of Video Controller power-down protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820804583.7U CN208209613U (en) | 2018-05-28 | 2018-05-28 | A kind of Video Controller power-down protection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN208209613U true CN208209613U (en) | 2018-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820804583.7U Active CN208209613U (en) | 2018-05-28 | 2018-05-28 | A kind of Video Controller power-down protection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329077A (en) * | 2019-08-14 | 2019-10-15 | 北京极智嘉科技有限公司 | Robot and applied to the battery runs down control method in robot |
-
2018
- 2018-05-28 CN CN201820804583.7U patent/CN208209613U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110329077A (en) * | 2019-08-14 | 2019-10-15 | 北京极智嘉科技有限公司 | Robot and applied to the battery runs down control method in robot |
| CN110329077B (en) * | 2019-08-14 | 2021-10-19 | 北京极智嘉科技股份有限公司 | Robot and battery power-off control method applied to robot |
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