CN106054681A - Card inserting and plugging safe control circuit and method and mobile terminal - Google Patents
Card inserting and plugging safe control circuit and method and mobile terminal Download PDFInfo
- Publication number
- CN106054681A CN106054681A CN201610617107.XA CN201610617107A CN106054681A CN 106054681 A CN106054681 A CN 106054681A CN 201610617107 A CN201610617107 A CN 201610617107A CN 106054681 A CN106054681 A CN 106054681A
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- card
- deck
- power supply
- mobile terminal
- plug
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Telephone Function (AREA)
Abstract
The invention provides a card inserting and plugging safe control circuit and method and a mobile terminal. The circuit is used for the mobile terminal with two card seats. The circuit comprises a detection unit for detecting the card position state signal of an inner side card seat, and a control unit whose two ends are connected to the detection unit and an outer side card seat power supply, wherein the card position state signal comprises card in or no card, the control unit is used for receiving the card position state signal of the inner side card seat, when the inner side card seat has no card, the power supply to the outer side card seat is controlled to be interrupted, and when the inner side card seat has a card, the power supply to the outer side card seat is controlled to be switched on. According to the card inserting and plugging safe control circuit provided by the invention, when a user carries out a hot plug operation on a double-card mobile terminal, card burning, power supply damage or other security risks are effectively avoided, and the safety performance of inserting and plugging a card is improved.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of plug-in card safety control circuit, method and mobile terminal.
Background technology
Along with the development of mobile terminal, its function is increasingly stronger, printed circuit board (Printed Circuit Board, letter
Claim PCB) on the increase of components and parts cause fabric swatch area growing tension, so the double card layout more advantage that area is less.Mesh
Before, the double card series arrangement mode that in mobile terminal, layout area is little mainly has the horizontal series arrangement of card and blocks cloth of vertically connecting
Office.But no matter use which kind of layout, general it is difficult to ensure that under situation of powering safety problem during plug-in card.
As a example by the situation of the horizontal series arrangement of card, as it is shown in figure 1, when the deck of outside card SIM2 is in without card state
Time, then outside card SIM2 being started polling mechanism, inner side card SIM1 there will be the golden finger of inner side card SIM1 in swapping process
The deck GND of VCC and inner side card SIM1 overlaps, and the deck VCC of the golden finger GND of inner side card SIM1 and outside card SIM2 takes
The situation connect.If now the deck poll of outside card SIM2 powers on, then it is likely to occur that electric current is counter on the card SIM1 of inner side fills formation
Negative pressure, causes the situation that inner side card SIM1 damages. on the other hand, owing to the golden finger GND area of SIM on the market is universal relatively
Greatly, it is also possible to outside appearance, block the deck VCC deck GND by inner side card SIM1 golden finger GND and inner side card SIM1 of SIM2
Form the situation of short circuit, thus cause the state of the deck VCC direct short-circuit over the ground of outside card SIM2, it is possible to damage power supply.
In like manner, when using the vertical series arrangement of card, also there will be similar situation, cause plug-in card potential safety hazard.
Summary of the invention
Embodiments provide control circuit method and the mobile terminal of a kind of plug-in card safety, to solve little area
On the premise of double card layout, double-card mobile terminal causes the technology of the potential safety hazard burning card or damage power supply in hot plug process
Problem.
First aspect, embodiments provides a kind of plug-in card safety control circuit, for including two decks
Mobile terminal, including detector unit, for detecting the card status signal in place of inner side deck, wherein said card status signal in place
Include card or without card；And the control unit that two ends are connected with described detector unit and outside deck power supply respectively, it is used for connecing
Receive the card status signal in place of described inner side deck, when described inner side deck is without card, control to interrupt described outside deck
Power supply, when described inner side deck has card, controls the conducting power supply to described outside deck.
Second aspect, the embodiment of the present invention also provides for a kind of mobile terminal, and including two decks, described mobile terminal includes
Weigh above-mentioned plug-in card safety control circuit.
The third aspect, the embodiment of the present invention also provides for a kind of plug-in card method of controlling security, for above-mentioned mobile terminal, bag
Including: the card of deck status signal in place inside reception, wherein said card status signal in place includes card or without card；In described
When side deck is without card, control to interrupt the power supply to outside deck；When described inner side deck has card, control conducting to outside deck
Power supply.
So, a kind of plug-in card safety control circuit, method and the mobile terminal that the embodiment of the present invention provides, this circuit bag
Include: detector unit, for detect inner side deck card status signal in place, wherein said card status signal in place include card or
Without card；And the control unit that two ends are connected with described detector unit and outside deck power supply respectively, it is used for receiving described inner side
The card status signal in place of deck, when described inner side deck is without card, controls to interrupt the power supply to outside deck, when described inner side
When deck has card, control the conducting power supply to outside deck.The plug-in card safety control circuit that the present invention provides makes user exist
When double-card mobile terminal is carried out hot-swappable operation, it is prevented effectively from initiation and burns the potential safety hazards such as card or power supply damage, improve slotting
Pull out the security performance of card.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, required in the embodiment of the present invention being described below
Accompanying drawing to be used is briefly described, it should be apparent that, the accompanying drawing in describing below is only some embodiments of the present invention,
For those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
The card horizontal series arrangement schematic diagram of the double-card mobile terminal that Fig. 1 provides for background of invention；
The structural representation of a kind of plug-in card safety control circuit that Fig. 2 provides for the embodiment of the present invention；
The structural representation of the another kind of plug-in card safety control circuit that Fig. 3 provides for the embodiment of the present invention；
Fig. 4 is the structural representation of detector unit 201 in Fig. 3；
The flow chart of the plug-in card method of controlling security that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments wholely.Based on this
Embodiment in bright, the every other enforcement that those of ordinary skill in the art are obtained under not making creative work premise
Example, broadly falls into the scope of protection of the invention.
In embodiments of the present invention, being direction from outside to inside with plug-in card direction, two decks of mobile terminal are according to inserting
Card direction is arranged, is divided into outside deck and inner side deck.
First aspect, sees Fig. 2, and the present invention implements a kind of plug-in card safety control circuit 200 provided, and is used for including two
The mobile terminal of individual deck, including:
Detector unit 201, for detecting the card status signal in place of inner side deck, wherein said card status signal in place bag
Include card or without card；
And the control unit 202 that two ends are connected with described detector unit 201 and outside deck power supply 203 respectively, it is used for
Receive the card status signal in place of described inner side deck, when described inner side deck is without card, control to interrupt described outside deck
Power supply, when described inner side deck has card, control the conducting power supply to described outside deck.
In the present embodiment, status signal in place for card is divided into and has card or without card.Situation without card specifically may be included in deck
On there is no a plug-in card, or card is not inserted into position, and is pulled out by card from deck.The situation having card is specifically as follows inner side card
Seat is inserted with card, and card has inserted and put in place.Below in an example, the related description of status information in place and above-mentioned statement one are blocked
Cause, for avoiding repeating, below repeat no more.
In the embodiment of the present invention, according to inner side deck block state in place control outside deck power on or lower electricity make use
Family, when double-card mobile terminal carries out hot-swappable operation, is prevented effectively from initiation and burns the potential safety hazards such as card or power supply damage, improve
The security performance of plug-in card.
As it is shown on figure 3, the present invention implements the another kind of plug-in card safety control circuit provided, for including two decks
Mobile terminal, including:
Detector unit 201, for detecting the card status signal in place of inner side deck, wherein said card status signal in place bag
Include card or without card；
And the control unit 202 that two ends are connected with described detector unit 201 and outside deck power supply 203 respectively, it is used for
Receive the card status signal in place of described inner side deck, when described inner side deck is without card, control to interrupt described outside deck
Power supply, when described inner side deck has card, control the conducting power supply to described outside deck.
Preferably, as shown in Figure 4, detector unit 201 specifically includes and is positioned at the deck of described inner side and the elastic component of ground connection
2011, described elastic component 2011 is stretched to when described inner side deck has card contact with the input of described control unit 202,
Recoil to when described inner side deck is without card disconnect with described control unit.When Fig. 3 Elastic part 2011 is in location A, contact is described
The input of control unit 202, disconnects the input of described control unit 202 when being in B location.Wherein, embodiment controls
Signal source is the 1.8V voltage of output.
As it is shown on figure 3, elastic component 2011 is connected between control signal source and control unit 202 input, wherein, implement
In example, control signal source is the 1.8V voltage of output, and this voltage can be provided by fixed power source, it is possible to defeated by mobile terminal processor
Going out, concrete source and form are not done and are specified.The stretching of described elastic component 2011 contacts connection with the input of described control unit 202
Time, the level signal of described control unit 202 input is dragged down by elastic component, and the resilience of described elastic component 2011 controls list with described
When unit disconnects, the signal of the input of described control unit 202 is high level.Therefore, it is possible to make control unit 202 from electricity
Distinguish inner side deck on signal and have card or without card situation.
Preferably, detector unit 201 also includes electrostatic impedor (Electro-Static discharge is called for short ESD)
2012, its one end is parallel to elastic component 2011, and other end ground connection, in order to carry out electrostatic defending to elastic component 2011.
It should be understood that detector unit 201 is including but not limited to said structure, as long as inner side deck has card and during without card
Distinguishing characteristics can be produced and send distinguishing signal.
Control unit 202 includes switching device 2021 and audion 2022.
The outfan of switching device 2021 is connected with outside deck power supply, for interrupting or the conducting confession to outside deck
Electricity.The control end of switching device 2021 and a switching signal source connect, and when mobile terminal-opening, switching signal source can provide one
Constant voltage, when in mobile terminal shutdown or not operating, switching signal source is then given tacit consent to drop-down.
The base stage of described audion 2022 is connected with described detector unit 201, the colelctor electrode of described audion 2022 and institute
State switching device 2021 control end connect, the grounded emitter of described audion 2022, when detector unit 201 record described in
When side deck is without card, the base stage of audion 2022 is high level, and audion 2022 is switched on, the control of the most described switching device
End is low level, controls described switching device and disconnects to interrupt the power supply to described outside deck, when detector unit 201 records institute
When inside stating, deck has card, the level of the base stage of audion 2022 is pulled low, and audion is not switched on, the most described switch dress
The control end put is high level, controls described switching means into conduction to open the power supply to described outside deck.
In the present embodiment, switching device 2021 uses load switch, enable foot and the audion 2022 of this load switch
Colelctor electrode connects.It should be understood that switching device is not limited to the form of above-mentioned load switch, only need to have by control signal real
Existing switching function.
Preferably, control unit 202 also includes stabilization unit 2023, is connected to detector unit 201 and audion 2022
Between base stage, to ensure that detector unit 201 is sent to the stability of the level signal of control unit 202 input.
Concrete, stabilization unit 2023 includes electric capacity C and resistance R, electric capacity C one end ground connection, and the other end is with resistance R one end also
Jointly being connected with detector unit 201 after connection, the other end of resistance R is connected with the base stage of audion 2022.
A kind of plug-in card safety control circuit that the embodiment of the present invention provides, for including the mobile terminal of two decks,
Including, detector unit, the card status signal in place for inner side deck, wherein said card status signal in place includes card or nothing
Card；And the control unit that two ends are connected with described detector unit and outside deck power supply respectively, it is used for receiving described inner side card
The card status signal in place of seat, when described inner side deck is without card, controls electricity under the deck of described outside, and when described inner side, deck has
During card, control described outside deck and power on.So according to inner side deck block state in place control outside deck power on or under
Electricity makes user when double-card mobile terminal carries out hot-swappable operation, is prevented effectively from the safety such as initiation burning card or power supply damage the most hidden
Suffer from, improve the security performance of plug-in card.
Second aspect, embodiments provides a kind of mobile terminal, and including two decks, described mobile terminal includes
Arbitrary plug-in card safety control circuit shown in above-mentioned Fig. 2 to Fig. 4.
Above-mentioned mobile terminal can be any mobile terminal including two decks, such as: mobile phone, panel computer
(Tablet Personal Computer), kneetop computer (Laptop Computer), personal digital assistant (personal
Digital assistant, be called for short PDA), mobile Internet access device (Mobile Internet Device, 20MID) or wearable
Formula equipment (Wearable Device) etc., it is also possible to be other electronic equipment, the mechanical, electrical philosophical works of code-phase, navigation product etc. in full.
Owing to the function of other building blocks or the structure of double-card mobile terminal are prior art, it not that the present invention implements
The emphasis that example illustrates, here is omitted.
A kind of mobile terminal that the embodiment of the present invention provides, including two decks, described mobile terminal also includes above-mentioned inserting
Pull out card safety control circuit.So according to inner side deck block state in place control outside deck power on or lower electricity makes user
When double-card mobile terminal being carried out hot-swappable operation, being prevented effectively from initiation and burning the potential safety hazards such as card or power supply damage, improve
The security performance of plug-in card.
The third aspect, embodiments provides a kind of plug-in card method of controlling security, and this control method is for above-mentioned
Mobile terminal, sees Fig. 5, comprises the following steps:
Step 501, receive inside the card status signal in place of deck, wherein said card status signal in place include card or
Without card.
Step 502, when described inner side deck is without card, control to interrupt power supply to outside deck.
Step 503, when described inner side deck has card, control the conducting power supply to outside deck.
Above-mentioned plug-in card method of controlling security can be realized by any plug-in card safety control circuit shown in Fig. 2 to Fig. 4,
Its specific embodiment may refer to the embodiment of above-mentioned plug-in card safety control circuit, and here is omitted.
A kind of plug-in card method of controlling security that the embodiment of the present invention provides, for above-mentioned mobile terminal, including: in receiving
The card status signal in place of side deck, wherein said card status signal in place includes card or without card；When described inner side deck without
During card, electricity under deck outside control；When described inner side deck has card, outside control, deck powers on.So according to inner side deck
Block state in place control outside deck power on or lower electricity make user double-card mobile terminal is carried out hot-swappable operation time,
It is prevented effectively from initiation and burns the potential safety hazards such as card or power supply damage, improve the security performance of plug-in card.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (10)
1. a plug-in card safety control circuit, for including the mobile terminal of two decks, it is characterised in that including:
Detector unit, for detecting the card status signal in place of inner side deck, wherein said card status signal in place includes card
Or without card；
And the control unit that two ends are connected with described detector unit and outside deck power supply respectively, it is used for receiving described inner side card
The card status signal in place of seat, when described inner side deck is without card, controls to interrupt the power supply to described outside deck, in described
When side deck has card, control the conducting power supply to described outside deck.
Plug-in card safety control circuit the most according to claim 1, it is characterised in that described detector unit includes being positioned at institute
Stating at the deck of inner side and the elastic component of ground connection, described elastic component is stretched to and described control unit when described inner side deck has card
Input contact, the input of described control unit is low level when being connected with described elastic component, and described elastic component is in institute
Recoiling to disconnect with described control unit when stating inner side deck without card, the input of described control unit is breaking with described elastic component
It it is high level when opening.
Plug-in card safety control circuit the most according to claim 2, it is characterised in that described detector unit also includes electrostatic
Impedor, one end of described electrostatic impedor and described resilient element connected in parallel, other end ground connection.
Plug-in card safety control circuit the most according to claim 1, it is characterised in that described control unit includes switch dress
Put and audion, wherein,
Described switching device is connected with described outside deck power supply, for interrupting or the conducting power supply to described outside deck,
The base stage of described audion is connected with described detector unit, the colelctor electrode of described audion and the control of described switching device
End connects, the grounded emitter of described audion, when described inner side deck is without card, turns on described audion, and described switch fills
The control end put is low level when described triode ON, controls described switching device and disconnects interrupting described outside deck
Power supply, when described inner side deck has card, disconnect described audion, the control end of described switching device is at described audion
High level during disconnection, controls described switching means into conduction to open the power supply to described outside deck.
Plug-in card safety control circuit the most according to claim 4, it is characterised in that described switching device is that load is opened
Closing, the foot that enables of described load switch is connected with the colelctor electrode of described audion, when the enable foot of described load switch is low electricity
Interrupt the power supply to described outside deck at ordinary times, turn on when the enable foot of described load switch is high level and described outside is blocked
The power supply of seat.
Plug-in card safety control circuit the most according to claim 4, it is characterised in that described control unit also includes stabilization
Unit, described stabilization unit is connected between the base stage of described detector unit and described audion.
Plug-in card safety control circuit the most according to claim 6, it is characterised in that described stabilization unit include electric capacity and
Resistance, described electric capacity one end ground connection, the other end is connected with described detector unit jointly with after described resistance one end parallel connection, described electricity
The other end of resistance is connected with the base stage of described audion.
8. a mobile terminal, including two decks, it is characterised in that described mobile terminal includes any one of claim 1 to 7
Described plug-in card safety control circuit.
Mobile terminal the most according to claim 8, it is characterised in that described mobile terminal is mobile phone, panel computer, above-knee
Type computer, personal digital assistant, mobile Internet access device, Wearable device, digital camera, e-book or navigator.
10. a plug-in card method of controlling security, for the mobile terminal described in claim 8 or 9, it is characterised in that including:
The card of deck status signal in place inside reception, wherein said card status signal in place includes card or without card；
When described inner side deck is without card, control to interrupt the power supply to outside deck；
When described inner side deck has card, control the conducting power supply to outside deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617107.XA CN106054681B (en) | 2016-07-29 | 2016-07-29 | A kind of plug-in card safety control circuit, method and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610617107.XA CN106054681B (en) | 2016-07-29 | 2016-07-29 | A kind of plug-in card safety control circuit, method and mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106054681A true CN106054681A (en) | 2016-10-26 |
| CN106054681B CN106054681B (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610617107.XA Active CN106054681B (en) | 2016-07-29 | 2016-07-29 | A kind of plug-in card safety control circuit, method and mobile terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108173560A (en) * | 2018-01-31 | 2018-06-15 | 维沃移动通信有限公司 | A kind of deck anti-static circuit and electronic equipment |
| CN109190745A (en) * | 2018-06-29 | 2019-01-11 | 努比亚技术有限公司 | It is a kind of to avoid burning control circuit, method, terminal and the computer storage medium blocked |
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| CN101835312A (en) * | 2010-05-10 | 2010-09-15 | 海洋王照明科技股份有限公司 | LED drive control circuit |
| CN103309263A (en) * | 2012-03-08 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Power enabling control circuit and electronic device using power enabling control circuit |
| CN105786146A (en) * | 2016-03-02 | 2016-07-20 | 惠州Tcl移动通信有限公司 | Mobile terminal and method for preventing power cross short circuit |
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| US20080020800A1 (en) * | 2006-07-21 | 2008-01-24 | Yingzan Xu | Two-in-one connector for both sim card of mobile phone and memory card |
| CN101835312A (en) * | 2010-05-10 | 2010-09-15 | 海洋王照明科技股份有限公司 | LED drive control circuit |
| CN103309263A (en) * | 2012-03-08 | 2013-09-18 | 鸿富锦精密工业（深圳）有限公司 | Power enabling control circuit and electronic device using power enabling control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108173560A (en) * | 2018-01-31 | 2018-06-15 | 维沃移动通信有限公司 | A kind of deck anti-static circuit and electronic equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106054681B (en) | 2019-01-11 |
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