CN102467630B - The charging anti-theft protection method of mobile terminal and system and mobile terminal - Google Patents
The charging anti-theft protection method of mobile terminal and system and mobile terminal Download PDFInfo
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- CN102467630B CN102467630B CN201010549289.4A CN201010549289A CN102467630B CN 102467630 B CN102467630 B CN 102467630B CN 201010549289 A CN201010549289 A CN 201010549289A CN 102467630 B CN102467630 B CN 102467630B
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Abstract
The invention discloses the charging anti-theft protection method of mobile terminal and system and mobile terminal, the method comprises: A, the positive voltage data line ports in first interface to be set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up; Whether the level of B, detection negative voltage data line cap is logic high, if, then perform step C, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up; Otherwise, perform step F; Whether the level of D, detection positive voltage data line ports is logic low, if so, then performs step e, charges to mobile terminal; Otherwise, perform step F, perform protection act.The present invention by increasing a diode in charger, and verifies the ID of charger by charging detection module, start anti-theft module when failing the authentication, refusal charges and takes safeguard measure.
Description
Technical field
The present invention relates to the anti-theft technique of mobile terminal, particularly the charging anti-theft protection method of mobile terminal and system and mobile terminal.
Background technology
Refer to Fig. 1, the charging system of mobile terminal generally comprises mobile terminal 11 and charger 21, in described charge mobile terminal 11, be provided with the female mouth 113 of central processing unit 111, charging detection module 112 and USB, described central processing unit 111 is connected with the female mouth 113 of USB by charging detection module 112.
Have the public mouth of attaching plug 211, USB data line and USB at charger 21, described USB data line comprises power lead VDD, positive voltage data line D+, negative voltage data line D-and ground wire GND.In charger, be provided with charging output module 212, described charging output module 212 is connected with power lead VDD and ground wire GND, and positive voltage data line D+ and negative voltage data line D-is in vacant state.When mobile terminal charges, only male for USB mouth need be connected with the female mouth of USB, charging detection module 112 detects that charger inserts, and just can realize charging.
The charger that above-mentioned mobile terminal uses and charging data line have unified specification, can be general mutually, and this brings easily simultaneously to user, also facilitates robber and disposes of stolen goods.Robber is after stealing mobile terminal, and only need buy general charger can dispose of stolen goods.
And existing mobile terminal does not all possess the antitheft function of charging, this is also the major reason that the bandits are giving a lot of trouble at present.Therefore, can not realize charging after how making robber steal mobile terminal, be one of direction of this area research.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art part, the object of the present invention is to provide the charging anti-theft protection method of mobile terminal and system and mobile terminal, make mobile terminal that applicable charger can only be adopted to charge.
In order to achieve the above object, this invention takes following technical scheme:
A charging anti-theft protection method for mobile terminal, is characterized in that, described method comprises the following steps:
A10, the second interface on charger to be connected with the first interface on mobile terminal; Be provided with diode in described charger, the anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
A1, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
Whether the level of B1, detection negative voltage data line cap is logic high, if so, then performs step C1; Otherwise, perform step F 1;
C1, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level of D1, detection positive voltage data line ports is logic low, if so, then performs step e 1; Otherwise, perform step F 1;
E1, to charge to mobile terminal;
F1, notice central processing unit start anti-theft protection module, perform protection act.
Described method, wherein, described protection act comprise refusal charging, delete sensitive data or require input password in one or several.
A charging burglary-resisting system for mobile terminal, it comprises charger and mobile terminal, is provided with first interface on the mobile terminal, described charger is provided with the second interface with described first interface adaptation; Wherein, be provided with charging output module and diode in described charger, described charging output module is used for charging to mobile terminal; The anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface; Be provided with central processing unit, charging detection module and anti-theft protection module in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein: described charging detection module is used for the positive voltage data line ports in first interface being set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up, and detects the logic level state of negative voltage data line cap; When detecting that negative voltage data line cap is low level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detecting that negative voltage data line cap is high level, charging detection module is further used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports; When detecting that positive voltage data line ports is high level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection positive voltage data line ports is low level, charge to mobile terminal.
A kind of mobile terminal, comprise first interface, wherein, in described mobile terminal, be provided with central processing unit, charging detection module and anti-theft protection module, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein: described charging detection module is used for the positive voltage data line ports in first interface being set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up, and detects the logic level state of negative voltage data line cap; When detecting that negative voltage data line cap is low level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detecting that negative voltage data line cap is high level, charging detection module is further used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports; When detection positive voltage data line ports is high level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection positive voltage data line ports is low level, charge to mobile terminal.
A charging anti-theft protection method for mobile terminal, wherein, described method comprises the following steps:
A20, the second interface on charger to be connected with the first interface on mobile terminal; Be provided with diode in described charger, the anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
A2, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level that B2 detects positive voltage data line ports is logic low, if so, then performs step C2; Otherwise, perform step F 2;
C2, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
Whether the level of D2, detection negative voltage data line cap is logic high, if so, then performs step e 2; Otherwise, perform step F 2;
E2, to charge to mobile terminal;
F2, notice central processing unit start anti-theft protection module, perform protection act.
Described method, wherein, described protection act comprise refusal charging, delete sensitive data or require input password in one or several.
A kind of charging burglary-resisting system of mobile terminal, it comprises charger and mobile terminal, be provided with first interface on the mobile terminal, described charger is provided with the second interface with described first interface adaptation, wherein, be provided with charging output module and diode in described charger, described charging output module is used for charging to mobile terminal; The anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
Be provided with central processing unit, charging detection module and anti-theft protection module in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein: described charging detection module is used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports; When detecting that positive voltage data line ports is high level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detection positive voltage data line ports is low level, it is output high level that charging detection module is further used for the positive voltage data line ports arranged in first interface, and the negative voltage data line cap arranged in first interface is input pull-up, and detect the logic level state of negative voltage data line cap; When detecting that negative voltage data line cap is low level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection negative voltage data line cap is high level, charge to mobile terminal.
A kind of mobile terminal, comprise first interface, wherein, in described mobile terminal, be provided with central processing unit, charging detection module and anti-theft protection module, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein: described charging detection module is used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports; When detecting that positive voltage data line ports is high level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detection positive voltage data line ports is low level, it is output high level that charging detection module is further used for the positive voltage data line ports arranged in first interface, and the negative voltage data line cap arranged in first interface is input pull-up, and detect the logic level state of negative voltage data line cap; When detecting that negative voltage data line cap is low level, notice central processing unit starts anti-theft protection module and performs protection act; When detection negative voltage data line cap is high level, charge to mobile terminal.
The charging anti-theft protection method of mobile terminal provided by the invention and system and mobile terminal, in charger, a series connection diode between positive voltage data line ports and negative voltage data line cap, and increase charging detection module and anti-theft protection module in the terminal, described charging detection module is for arranging and read the level state of positive voltage FPDP and negative voltage data port in first interface, thus whether checking charger is applicable charger, start anti-theft module when failing the authentication, refusal charges and takes safeguard measure, even if such robber has stolen mobile terminal and also cannot realize charging to mobile terminal, this mobile terminal is made to lose value to thief, dispose of stolen goods to thief and bring very large difficulty, thief naturally hopes and halts, thus play anti-theft function.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of charging scheme of mobile terminal in prior art.
The schematic diagram of the charging burglary-resisting system of the mobile terminal that Fig. 2 provides for the embodiment of the present invention.
The charging anti-theft protection method process flow diagram of the mobile terminal that Fig. 3 provides for the present invention first preferred embodiment.
The schematic diagram of the mobile terminal that Fig. 4 provides for the embodiment of the present invention.
The charging anti-theft protection method process flow diagram of the mobile terminal that Fig. 5 provides for the present invention second preferred embodiment.
Embodiment
The invention provides the charging anti-theft protection method of mobile terminal and system and mobile terminal; this process employs the pull-up characteristic of GPIO interface; arranged by charging detection module and read the level state of positive voltage FPDP and negative voltage data port in first interface; thus whether checking charger is applicable charger; start anti-theft module when failing the authentication; refusal charges and takes safeguard measure; cannot realize charging to mobile terminal; make mobile terminal that applicable charger can only be used to charge, thus play anti-theft feature.
For making object of the present invention, technical scheme and effect clearly, clearly, referring to accompanying drawing examples, the present invention is described in more detail.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The mobile terminal that the embodiment of the present invention provides is mobile phone, MID(Mobile Internet Devices, mobile internet device) or upper dictyosome.Refer to Fig. 2, the charging burglary-resisting system of the mobile terminal that the embodiment of the present invention provides comprises mobile terminal 10 and charger 20, described charger 20 has a USB data line (not marking in figure), one second interface is connected in one end of USB data line, the other end connects attaching plug 203, and described mobile terminal 10 is provided with the first interface with the second interface adaptation.
In the present embodiment, described first interface and the second interface are A type Mini USB interface conventional in prior art, there is data transmission port, data transmission can also be realized while charging, can certainly in prior art, other has the interface of similar functions, as A type USB interface, 1394 interfaces etc.Because the second interface and first interface are prior art, not shown in fig. 2 herein.
Wherein, in first interface and the second interface, power lead port VDD, positive voltage data line ports D+, negative voltage data line cap D-and ground wire port GND is respectively arranged with.
Charging output module 201 and diode D1 is provided with in described charger 20, described charging output module 201 is connected with the power lead port VDD in attaching plug 203, second interface of charger 20 and the ground wire port GND in the second interface respectively, and accesses civil power by attaching plug 203.
Described diode D1 is connected between positive voltage data line ports D+ in the second interface and negative voltage data line cap D-, wherein, the anode of described diode D1 connects the negative voltage data line cap D-in described second interface, and the negative electrode of diode D1 connects the positive voltage data line D+ port in the second interface.Should be noted that, in the present embodiment, the negative electrode of diode also can be connected with negative voltage data line cap D-, and anode is connected with the positive voltage data line D+ port in the second interface, is connected with reflection as long as charging detection module can realize the connection of diode D1 forward.
Central processing unit 101, charging detection module 102 and anti-theft protection module 103 is also provided with in described mobile terminal 10; described anti-theft protection module 103 is connected with charging detection module 102 by described central processing unit 101; for when the ID failure of charge management module checking charger, realize refusal charging, delete the sensitive data of mobile terminal 10 or require the safeguard measures such as input password.
Described charging detection module 102 is connected with first interface, whether inserts mobile terminal 10 for detecting charger 20, and the level state of the positive voltage data line ports arranging and detect in first interface and negative pressure electricity data line ports.
Described diode D1 has one-way conduction function, the current lead-through when diode D1 forward connects, and is now equivalent to circuit and connects; When diode D1 Opposite direction connection, circuit cannot conducting, and be now equivalent to charging circuit open circuit, the negative voltage data line cap namely in first interface is in vacant state.
In the present embodiment, the positive voltage data line ports D+ in first interface and negative voltage data line cap D-is the interface under central processing unit controls, and has the characteristic of GPIO interface (General Purpose Input and Output, IO interface).When GPIO interface pull-up, it possesses following characteristic:
When GPIO interface is unsettled, central processing unit 101 detects that the level of GPIO interface is logical one, is now equivalent to open circuit between positive voltage data line ports and negative voltage data line cap (namely positive voltage data line ports and negative voltage data line cap are in vacant state); When GPIO interface pull-up, and between positive voltage data line ports and negative voltage data line cap during conducting, if positive voltage data line ports connects high level, then the logic level of negative voltage data line cap is high level; If positive voltage data line ports connects low level, now the low level of positive voltage data line ports can be delivered to negative voltage data line cap, and therefore the logic level of negative voltage data line cap is also low level; When GPIO interface does not have pull-up, then can not possess above-mentioned characteristic simultaneously.
Based on the charging burglary-resisting system of above-mentioned mobile terminal, the embodiment of the present invention is also corresponding provides a kind of charging burglary-resisting system of above-mentioned mobile terminal that adopts to realize the antitheft method of charging, and refer to Fig. 3, described method comprises the following steps:
S110, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
Whether the level of S120, detection negative voltage data line cap is logic high, if so, then performs step S130; Otherwise, perform step S160;
S130, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level of S140, detection positive voltage data line ports is logic low, if so, then performs step S150; Otherwise, perform step S160;
S150, to charge to mobile terminal;
S160, notice central processing unit start anti-theft protection module, perform protection act.
Wherein, before step S110, described method comprises further: be connected with the first interface on mobile terminal by the second interface on charger.
In step S160, described protection act comprise refusal charging, delete sensitive data or require input password in one or several.
In above-mentioned method, step S110 by central controller controls charging detection module arrange positive voltage data line ports in first interface be high level and arrange negative voltage data line cap for input pull-up, realize the reversal of diode, now be equivalent to circuit breaker, even if negative voltage data line cap is in vacant state, now detect that the level of negative voltage data line is logical one.In the present embodiment, the port of input pull-up is high level when " unsettled ", if when this port is connected to low level, then the detection module that charges detects that the logic state of this port is low level.
Step S130 achieves diode forward and connects, and the logic low of negative voltage data line can be delivered to positive voltage data line, and the state of the positive voltage data line ports that the detection module that now charges detects is logical zero.
Should be understood that, in above-mentioned method, step S110 and S130 is two independently steps, does not affect mutually mutually.The step being set to the positive voltage data line ports in first interface to export high level and being arranged by the negative voltage data line cap in first interface input pull-up in no particular order, complete before only whether need being the step of logic high at the level detecting negative voltage data line cap.Similar, in no particular order, the level that only need detect positive voltage data line ports at charging detection module complete before whether being the step of logic low step negative voltage data line cap in first interface being set to output low level and being set to the positive voltage data line ports in first interface input pull-up.
Charging burglary-resisting system provided by the invention can only adopt applicable charger to charge, when use prior art charger charging time (by the positive voltage data line ports in the second interface and negative voltage data line cap unsettled), then testing result is: in the step s 120, judge that negative voltage data line cap is logic high, in step S140, judge that positive voltage data line is logic high, testing result is: non-applicable charger.
Based on above-mentioned system and method, the embodiment of the present invention also provides a kind of mobile terminal, refers to Fig. 4, and described mobile terminal comprises first interface 501, central processing unit 502, charging detection module 503 and anti-theft protection module 504.Described anti-theft protection module 504 is connected with charging detection module 503 by described central processing unit 502, and described charging detection module 503 is connected with described first interface 501.
Wherein, described charging detection module 503 exports high level for the positive voltage data line ports in first interface being set to, and the negative voltage data line cap in first interface is arranged input pull-up, and detect the logic level state of negative voltage data line cap; When detecting that negative voltage data line cap is low level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detecting that negative voltage data line cap is high level, charging detection module is further used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports; When detection positive voltage data line ports is high level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection positive voltage data line ports is low level, charge to mobile terminal.
Refer to Fig. 5, the charging anti-theft protection method process flow diagram of its mobile terminal provided for the second preferred embodiment provided by the invention.As shown in the figure, described method comprises:
S610, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level of S620, detection positive voltage data line ports is logic low, if so, then performs step S630; Otherwise, perform step S660;
S630, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
In S640: whether the level detecting negative voltage data line cap is logic high, if so, then step S650 is performed; Otherwise, perform step S660;
S650, to charge to mobile terminal;
S660, notice central processing unit start anti-theft protection module, perform protection act.
Wherein, before step S610, described method comprises further: be connected with the first interface on mobile terminal by the second interface on charger.
With above-mentioned first preferred embodiment unlike, in this method, step S610 achieve diode forward connect, in step S630, realize the just reversal of diode.
According to the method that the second preferred embodiment provides; the embodiment of the present invention is also corresponding provides a kind of charging anti-theft protection system corresponding with the method; it comprises: charger and mobile terminal; be provided with first interface on the mobile terminal; described charger has a USB data line, described USB data line is provided with the second interface with described first interface adaptation.
Be provided with charging output module and diode in described charger, described charging output module is connected with the power lead port in the attaching plug of charger, the second interface and the ground wire port in the second interface respectively; Between the positive voltage data line ports of described Diode series in the second interface and negative voltage data line cap;
Be provided with central processing unit, charging detection module and anti-theft protection module in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein:
Described charging detection module is used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface is set to input pull-up, and detects the logic level state of positive voltage data line ports.
When detecting that positive voltage data line ports is high level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detection positive voltage data line ports is low level, it is output high level that charging detection module is further used for the positive voltage data line ports arranged in first interface, and the negative voltage data line cap arranged in first interface is input pull-up, and detect the logic level state of negative voltage data line cap.
When detecting that negative voltage data line cap is low level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection negative voltage data line cap is high level, charge to mobile terminal.
The embodiment of the present invention also correspondence provides a kind of mobile terminal, and the hardware configuration of this mobile terminal is identical with the mobile terminal in said system with software function, has been described in detail this mobile terminal, repeats no more herein based in said system.
In sum, the charging anti-theft protection method of mobile terminal provided by the invention and system and mobile terminal, by in charger, a series connection diode between positive voltage data line ports and negative voltage data line cap, and increase charging detection module and anti-theft protection module in the terminal, described charging detection module is for arranging and read the level state of positive voltage FPDP and negative voltage data port in first interface, thus whether checking charger is applicable charger (i.e. the charger of the above-mentioned diode of connecting between positive voltage data line ports and negative voltage data line cap mentioned), mobile terminal starts anti-theft module when failing the authentication, refusal charging is also taked to delete the safeguard measures such as storage sensitive data on mobile terminals automatically.Even if such robber has stolen mobile terminal and also cannot realize to mobile terminal charging, make this mobile terminal lose value to thief, disposing of stolen goods to thief has brought very large difficulty, and thief naturally hopes and halts, thus plays anti-theft function.
Meanwhile, the charging burglary-resisting system of mobile terminal provided by the invention also has structure simply, the features such as cost is low.
Be understandable that, for those of ordinary skills, can be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, and all these change or replace the protection domain that all should belong to the claim appended by the present invention.
Claims (8)
1. a charging anti-theft protection method for mobile terminal, is characterized in that, described method comprises the following steps:
A10, the second interface on charger to be connected with the first interface on mobile terminal; Be provided with diode in described charger, the anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
A1, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
Whether the level of B1, detection negative voltage data line cap is logic high, if so, then performs step C1; Otherwise, perform step F 1;
C1, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level of D1, detection positive voltage data line ports is logic low, if so, then performs step e 1; Otherwise, perform step F 1;
E1, to charge to mobile terminal;
F1, notice central processing unit start anti-theft protection module, perform protection act.
2. method according to claim 1, is characterized in that, described protection act comprise refusal charging, delete sensitive data or require input password in one or several.
3. a charging burglary-resisting system for mobile terminal, it comprises charger and mobile terminal, is provided with first interface on the mobile terminal, described charger is provided with the second interface with described first interface adaptation; It is characterized in that,
Be provided with charging output module and diode in described charger, described charging output module is used for charging to mobile terminal; The anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
Be provided with central processing unit, charging detection module and anti-theft protection module in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein:
Described charging detection module is used for the positive voltage data line ports in first interface being set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up, and detects the logic level state of negative voltage data line cap;
When detecting that negative voltage data line cap is low level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detecting that negative voltage data line cap is high level, charging detection module is further used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports;
When detecting that positive voltage data line ports is high level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection positive voltage data line ports is low level, charge to mobile terminal.
4. a mobile terminal, comprise first interface, it is characterized in that, central processing unit, charging detection module and anti-theft protection module is provided with in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein:
Described charging detection module is used for the positive voltage data line ports in first interface being set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up, and detects the logic level state of negative voltage data line cap;
When detecting that negative voltage data line cap is low level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detecting that negative voltage data line cap is high level, charging detection module is further used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface be set to input pull-up, and detect the logic level state of positive voltage data line ports;
When detection positive voltage data line ports is high level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection positive voltage data line ports is low level, charge to mobile terminal.
5. a charging anti-theft protection method for mobile terminal, is characterized in that, described method comprises the following steps:
A20, the second interface on charger to be connected with the first interface on mobile terminal; Be provided with diode in described charger, the anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
A2, the negative voltage data line cap in first interface is set to output low level, and the positive voltage data line ports in first interface is set to input pull-up;
Whether the level that B2 detects positive voltage data line ports is logic low, if so, then performs step C2; Otherwise, perform step F 2;
C2, the positive voltage data line ports in first interface is set to export high level, and the negative voltage data line cap in first interface is arranged input pull-up;
Whether the level of D2, detection negative voltage data line cap is logic high, if so, then performs step e 2; Otherwise, perform step F 2;
E2, to charge to mobile terminal;
F2, notice central processing unit start anti-theft protection module, perform protection act.
6. method according to claim 5, is characterized in that, described protection act comprise refusal charging, delete sensitive data or require input password in one or several.
7. a charging burglary-resisting system for mobile terminal, it comprises charger and mobile terminal, is provided with first interface on the mobile terminal, described charger is provided with the second interface with described first interface adaptation, it is characterized in that,
Be provided with charging output module and diode in described charger, described charging output module is used for charging to mobile terminal; The anode of described diode connects the negative voltage data line cap in the second interface, and negative electrode connects the positive voltage data line ports in the second interface;
Be provided with central processing unit, charging detection module and anti-theft protection module in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein:
Described charging detection module is used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface is set to input pull-up, and detects the logic level state of positive voltage data line ports;
When detecting that positive voltage data line ports is high level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detection positive voltage data line ports is low level, it is output high level that charging detection module is further used for the positive voltage data line ports arranged in first interface, and the negative voltage data line cap arranged in first interface is input pull-up, and detect the logic level state of negative voltage data line cap;
When detecting that negative voltage data line cap is low level, charging detection module is also for notifying that central processing unit starts anti-theft protection module and performs protection act; When detection negative voltage data line cap is high level, charge to mobile terminal.
8. a mobile terminal, comprise first interface, it is characterized in that, central processing unit, charging detection module and anti-theft protection module is provided with in described mobile terminal, described anti-theft protection module is connected with charging detection module by described central processing unit, and described charging detection module is connected with described first interface; Wherein:
Described charging detection module is used for the negative voltage data line cap in first interface to be set to output low level, and the positive voltage data line ports in first interface is set to input pull-up, and detects the logic level state of positive voltage data line ports;
When detecting that positive voltage data line ports is high level, charging detection module is further used for notice central processing unit and starts anti-theft protection module execution protection act; When detection positive voltage data line ports is low level, it is output high level that charging detection module is further used for the positive voltage data line ports arranged in first interface, and the negative voltage data line cap arranged in first interface is input pull-up, and detect the logic level state of negative voltage data line cap;
When detecting that negative voltage data line cap is low level, notice central processing unit starts anti-theft protection module and performs protection act; When detection negative voltage data line cap is high level, charge to mobile terminal.
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| CN201010549289.4A CN102467630B (en) | 2010-11-18 | 2010-11-18 | The charging anti-theft protection method of mobile terminal and system and mobile terminal |
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| CN102467630B true CN102467630B (en) | 2015-10-28 |
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| CN104777385B (en) * | 2015-04-21 | 2017-06-13 | 东莞华贝电子科技有限公司 | Tool and method for detecting mobile terminal reverse power connection and data reversal connection protection function |
| CN105787334B (en) * | 2016-02-23 | 2019-01-04 | 惠州Tcl移动通信有限公司 | A kind of safe verification method and system based on mobile terminal |
| CN105809002B (en) * | 2016-03-09 | 2019-02-12 | Oppo广东移动通信有限公司 | A kind of user terminal charging method and user terminal |
| CN109842714B (en) * | 2017-11-24 | 2021-06-15 | 奇酷互联网络科技（深圳）有限公司 | Anti-theft processing method and device and mobile terminal |
| CN108429364B (en) * | 2018-03-16 | 2020-08-04 | 维沃移动通信有限公司 | Mobile terminal, charging device and charging method thereof |
| CN115273371A (en) * | 2022-06-30 | 2022-11-01 | 湖北民族大学 | Anti-theft device of intelligent terminal, anti-theft system and method |
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