CN205038651U - Electronic device - Google Patents
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- CN205038651U CN205038651U CN201520633804.5U CN201520633804U CN205038651U CN 205038651 U CN205038651 U CN 205038651U CN 201520633804 U CN201520633804 U CN 201520633804U CN 205038651 U CN205038651 U CN 205038651U
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- carbon film
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Abstract
The utility model provides an electronic device, this electronic device includes: covering and circuit board, wherein: the covering is in the same place with the laminating of circuit board, be provided with two contacts on the internal surface of circuit board, be provided with the carbon film on the internal surface of covering, carbon film and two contact contacts to communicate two contacts. The utility model discloses even if in can overcoming the existing equipment reveal conductive rubber, prevent taking off detection circuitry and also can not open circuit, unable trigger protection mechanism for the assailant can gently steal the problem of sensitive data information, the security that has improved electronic device, and in a single day the assailant tears the machine open promptly, and the machine is then out of work to be ruined promptly.
Description
Technical field
The utility model relates to a kind of electronic technology field, particularly relates to a kind of electronic equipment.
Background technology
At current electronics field; electronic equipment in such as POS, code keypad, ATM, electronic signature equipment, OTP and other financial fields; system sensitive data message, as input the keyboard signal part of personal identification number, the safety chip, self-destruction attack detecting signal etc. of storage system key, all needs to be subject to strict protection.
In correlation technique, be on keyboard pcb board, be provided with multiple tamper-evident contact connecting protection cabling substantially for sensitive data information protection, conductive rubber is pressed on tamper-evident contact by machine shell, makes the conducting of tamper-evident testing circuit.If assailant attempts full wafer open machine shell when carrying out attack keyboard; conductive rubber just unclamps with tamper-evident contact; cause tamper-evident testing circuit open circuit etc., thus trigger related mechanism to wipe the sensitive data information of main frame, such sensitive data information just obtains effective protection.But in the program; if assailant adopts certain mode in advance tamper-evident testing circuit to be kept conducting; even if conductive rubber is opened; tamper-evident testing circuit also can not open circuit; cannot trigger protection mechanism; make assailant can gently steal sensitive data information, therefore, the security of the program is not high.
Utility model content
The utility model is intended to one of solve the problem.
Fundamental purpose of the present utility model is to provide a kind of electronic equipment.
For achieving the above object, the technical solution of the utility model is specifically achieved in that
The utility model provides a kind of electronic equipment on the one hand, comprising: covering and circuit board; Described covering and described circuit board fit together; The inside surface of described circuit board is provided with two contacts, the inside surface of described covering is provided with carbon film, described carbon film and described two contact, and be communicated with described two contacts.
In addition, on the described carbon film subregion that is distributed in the inside surface of described covering or Zone Full.
The utility model provides a kind of electronic equipment on the other hand, comprising: circuit board, it is characterized in that,
Described circuit board is provided with two contacts, and is coated with carbon film, described carbon film and described two contact, and be communicated with described two contacts.
In addition, described carbon film is also coated with covering, described covering is together with described carbon film, described press fit of circuit boards.
In addition, on the described carbon film subregion that is distributed in described circuit board or Zone Full.
In addition, described covering is metal clips conducting film.
In addition, described carbon film comprises: bar shaped carbon film, circular carbon film, square carbon film, linear carbon film or irregularly shaped carbon film.
In addition, described electronic equipment also comprises main control chip, and described main control chip is connected between described two contacts.
In addition, described main control chip is safety chip.
In addition, described electronic equipment comprises: carry out arbitrarily the equipment be combined to form in electronic signature equipment, smart card, card reader, dynamic password generating device, point-of-sale terminal POS or described electronic signature equipment, smart card, dynamic password generating device.
The technical scheme provided as can be seen from above-mentioned the utility model; the utility model provides a kind of electronic equipment; even if can overcome in existing equipment, conductive rubber is opened; tamper-evident testing circuit also can not open circuit; cannot trigger protection mechanism, make assailant gently can steal the problem of sensitive data information, improve the security of electronic equipment; namely assailant is once tear machine open, and machine does not then work destroyed.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation of the electronic equipment that Fig. 1 provides for the utility model embodiment 1;
Fig. 2 be covering 100 inside surface on be provided with the schematic diagram of carbon film 400;
The structural representation of the electronic equipment that Fig. 3 provides for the utility model embodiment 2;
Fig. 4 is the schematic diagram after carbon film 400 is fitted with circuit board 200;
The structural representation of the electronic equipment that Fig. 5 provides for the utility model embodiment 2.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection domain of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or quantity or position.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
Embodiment 1
Present embodiments provide a kind of electronic equipment.
The structural representation of the electronic equipment that Fig. 1 provides for the present embodiment, as shown in Figure 1, this electronic equipment 10 comprises: covering 100 and circuit board 200; Covering 100 and circuit board 200 fit together; The inside surface of circuit board 200 is provided with two contacts 301 and 302, the inside surface of covering 100 is provided with carbon film 400 (as shown in Figure 2), carbon film and two contact, and be communicated with two contacts.
As a kind of Alternate embodiments in the present embodiment, electronic equipment 10 also comprises main control chip 500, and main control chip 500 to be connected between two contacts 301 and 302, main control chip 500, and for detecting the resistance value between two contacts, and resistance value preserved in record; When detecting that the resistance value between two contacts changes, the state of putting main control chip is unavailable.
As a kind of Alternate embodiments in the present embodiment, covering 100 is metal clips conducting film, the DOME film that namely technician is usually said.In the present embodiment, when inside surface refers to that covering 100 and circuit board 200 fit together, the inside surface of covering 100 is exactly the surface towards circuit board 200, and the inside surface of circuit board 200 is exactly the surface towards covering 100.Thus, when covering 100 fits together with circuit board 200, two contacts can be communicated with by carbon film; when covering 100 is separated with circuit board 200, carbon film can be caused to rupture, and then affect the resistance between two contacts; trigger protection mechanism, and then carry out anti-demolition protection.
Fig. 2 be covering 100 inside surface on be provided with the schematic diagram of carbon film 400.As a kind of Alternate embodiments in the present embodiment, on the subregion that carbon film 400 is distributed in the inside surface of covering 100 or Zone Full.Such as, carbon film can be that thin layer is coated on the whole inside surface of covering 100, can certainly have certain thickness; Also the regional area that can cover two contacts when covering 100 is fitted with circuit board 200 can be just coated in.Carbon film is minimum distribution range can cover the scope of two contacts, with border less in covering 100 and circuit board 200 for maximum distribution scope.Carbon film can be coated with on the inside surface of covering 100, and can be independently pad pasting, fit on the inside surface of covering 100, as long as can be fixed on the inside surface of covering 100, the present embodiment do concrete restriction yet.Because carbon film has electric conductivity, therefore, two contacts can be communicated with by carbon film, simultaneously; carbon film is also fragile, is fitted with the covering of carbon film once be lifted, and carbon film also will be destroyed; resistance between two contacts then changes, and then trigger protection mechanism, carries out anti-demolition protection.
In addition, carbon film 400 can occur with various form, and such as, carbon film 400 can comprise: bar shaped carbon film, circular carbon film, square carbon film, linear carbon film or irregularly shaped carbon film.What deserves to be explained is, when carbon film 400 is linear carbon film, loop wire shape can be only and be distributed on the inside surface of covering 100, now, when covering 100 is fitted with circuit board 200, the two ends of loop wire at least will with two contact, the carbon film of other shapes as above at least will cover two contacts.
As a kind of Alternate embodiments in the present embodiment, main control chip 500 can be safety chip.This safety chip (Z8D64U (state close lot number SSX43), Z32 (the close lot number SSX20 of state) as Guoming Technology Co., Ltd) inside has independently processor and storage unit; PKI digital certificate and key can be stored; and other characteristics; encryption and decryption computing is carried out to data; for user provides data encryption and identification safety authentication service, protection business privacy and data security.Main control chip can detect the resistance value between two contacts 301 and 302, resistance value between two contacts is the resistance value covering the carbon film on two contacts when covering 100 is fitted with circuit board 200, and the resistance value between two contacts is determined according to the carbon capacity of carbon film unit volume.Therefore, under normal operating conditions, resistance value between two contacts can not change, be exactly electronic equipment in factory by after shell pressing well, covering 100 and circuit board 200 cover the resistance value of the carbon film on two contacts when fitting, certainly, because the shape of carbon film, thin and thick, volume vary in size, the resistance value of carbon film itself can be different, this make in each electronic equipment between two contacts resistance value can resistance be different according to the difference of plant produced.Therefore, in normal operation, the resistance value record between two contacts detected first is preserved by main control chip.But, if assailant will open carbon film or only just tear sub-fraction carbon film, fracture can be there is because of carbon film fragility or come off, now, the carbon capacity of carbon film unit volume will change, thus, the resistance value of the carbon film that main control chip just can detect on two contacts changes, and then can trigger protection mechanism, carry out anti-demolition protection, the state of namely putting the main control chip of electronic equipment is unavailable, unavailablely namely refer to that safety chip can not work, be equivalent to cancel, can not be read and can not input, forbid distorting password, the key message that erasing main control chip stores and key etc., thus by change in resistance trigger protection mechanism, overcome conductive rubber to open, tamper-evident testing circuit also can not open circuit, cannot trigger protection mechanism, make assailant gently can steal the problem of sensitive data information.Because even if assailant can adopt certain mode in advance tamper-evident testing circuit to be kept conducting, the resistance that main control chip detects still can change.
In the specific implementation; if assailant will open carbon film or only just tear sub-fraction carbon film; due to the fragility of carbon film, carbon film will be destroyed, now; the carbon capacity of carbon film unit volume will change; thus, the resistance value of the carbon film that main control chip just can detect on two contacts changes, so can trigger protection mechanism; carry out anti-demolition protection, prevent assailant from gently stealing sensitive data information.
As a kind of Alternate embodiments in the present embodiment, main control chip 500, for detecting that the resistance value between two contacts changes, comprising: detect that the resistance value between the first two contact is greater than preset resistive value with the difference recording the resistance value of preserving.Wherein, preset resistive value can be arranged according to technician's experience, to prevent user from being fallen by electronic equipment because of carelessness on the ground or collision, makes the carbon capacity of carbon film unit volume that small change occur; and then very little change in resistance detected, the situation of false triggering protection mechanism.
As a kind of Alternate embodiments in the present embodiment; electronic equipment 10 comprises: electronic signature equipment (as the U shield of industrial and commercial bank, the K treasured etc. of agricultural bank), smart card, card reader, dynamic password generating device (One-timePassword; be called for short OTP), point-of-sale terminal POS or above-mentioned electronic signature equipment, smart card, carry out arbitrarily the equipment that is combined to form in dynamic password generating device, all belong to the object of protection of the present invention.
By the electronic equipment that the present embodiment provides; even if can overcome in existing equipment, conductive rubber is opened; tamper-evident testing circuit also can not open circuit; cannot trigger protection mechanism; make assailant gently can steal the problem of sensitive data information; improve the security of electronic equipment, namely assailant is once tear machine open, and machine does not then work destroyed.
Embodiment 2
Present embodiments provide a kind of electronic equipment.The structural representation of the electronic equipment that Fig. 3 provides for the present embodiment.
As shown in Figure 3, this electronic equipment 10 comprises: circuit board 200; Circuit board 200 is provided with two contacts 301 and 302, and is coated with carbon film 400, carbon film 400 and two contact, and be communicated with two contacts.Fig. 4 is the schematic diagram after carbon film 400 is fitted with circuit board 200.
As a kind of Alternate embodiments in the present embodiment; as shown in Figure 5; carbon film 400 is also coated with covering 100; covering 100 and carbon film 400, circuit board 200 press together; thus; when covering 100, carbon film 400 and circuit board 200 press together; two contacts can be communicated with by carbon film; when assailant opens covering 100; covering 100 is separated with circuit board 200, carbon film can be caused to rupture, and then affect the resistance between two contacts; trigger protection mechanism, and then carry out anti-demolition protection.
As a kind of Alternate embodiments in the present embodiment, covering 100 is metal clips conducting film, the DOME film that namely technician is usually said.
As a kind of Alternate embodiments in the present embodiment, on the subregion that carbon film 400 is distributed in the inside surface of circuit board 200 or Zone Full.Such as, carbon film can be that thin layer is coated on circuit board 200, can certainly have certain thickness; Also the regional area that can cover two contacts can be just coated in.Carbon film is minimum distribution range can cover the scope of two contacts, with border less in covering 100 and circuit board 200 for maximum distribution scope.Carbon film can be coated with on circuit board 200, and can be independently pad pasting, fit on circuit board 200, as long as can be fixed on circuit board 200, the present embodiment do concrete restriction yet.Because carbon film has electric conductivity; therefore; when carbon film 400 fits together with circuit board 200, two contacts can be communicated with by carbon film, simultaneously; carbon film is also fragile; be fitted with the covering of carbon film once be lifted, carbon film also will be destroyed, and the resistance between two contacts then changes; and then trigger protection mechanism, carry out anti-demolition protection.
In addition, carbon film 400 can occur with various form, and such as, carbon film 400 can comprise: bar shaped carbon film, circular carbon film, square carbon film, linear carbon film or irregularly shaped carbon film.What deserves to be explained is, when carbon film 400 is linear carbon film, loop wire shape can be only and be distributed on circuit board 200, now, the two ends of loop wire at least will with two contact, the carbon film of other shapes as above at least will cover two contacts.
As a kind of Alternate embodiments in the present embodiment, this electronic equipment 10 also comprises: main control chip 500 is connected between two contacts 301 and 302, and for detecting the resistance value between two contacts, and resistance value preserved in record; When detecting that the resistance value between two contacts 301 and 302 changes, the state of putting main control chip 500 is unavailable.
In the present embodiment, main control chip 500 can be safety chip.This safety chip (Z8D64U (state close lot number SSX43), Z32 (the close lot number SSX20 of state) as Guoming Technology Co., Ltd) inside has independently processor and storage unit; PKI digital certificate and key can be stored; and other characteristics; encryption and decryption computing is carried out to data; for user provides data encryption and identification safety authentication service, protection business privacy and data security.Main control chip can detect the resistance value between two contacts 301 and 302, resistance value between two contacts is the resistance value covering the carbon film on two contacts when carbon film 400 is fitted with circuit board 200, and the resistance value between two contacts is determined according to the carbon capacity of carbon film unit volume.Therefore, under normal operating conditions, resistance value between two contacts can not change, be exactly electronic equipment in factory by after shell pressing well, carbon film 400 and circuit board 200 cover the resistance value of the carbon film on two contacts when fitting, certainly, because the shape of carbon film, thin and thick, volume vary in size, the resistance value of carbon film itself can be different, this make in each electronic equipment between two contacts resistance value can resistance be different according to the difference of plant produced.Therefore, in normal operation, the resistance value record between two contacts detected first is preserved by main control chip.But, if assailant will open carbon film or only just tear sub-fraction carbon film, fracture can be there is because of carbon film fragility or come off, now, the carbon capacity of carbon film unit volume will change, thus, the resistance value of the carbon film that main control chip just can detect on two contacts changes, and then can trigger protection mechanism, carry out anti-demolition protection, the state of namely putting the main control chip of electronic equipment is unavailable, unavailablely namely refer to that safety chip can not work, be equivalent to cancel, can not be read and can not input, forbid distorting password, the key message that erasing main control chip stores and key etc., thus by change in resistance trigger protection mechanism, overcome conductive rubber to open, tamper-evident testing circuit also can not open circuit, cannot trigger protection mechanism, make assailant gently can steal the problem of sensitive data information.Because even if assailant can adopt certain mode in advance tamper-evident testing circuit to be kept conducting, the resistance that main control chip detects still can change.
In the specific implementation; if assailant will open carbon film or only just tear sub-fraction carbon film; due to the fragility of carbon film, carbon film will be destroyed, now; the carbon capacity of carbon film unit volume will change; thus, the resistance value of the carbon film that main control chip just can detect on two contacts changes, so can trigger protection mechanism; carry out anti-demolition protection, prevent assailant from gently stealing sensitive data information.
As a kind of Alternate embodiments in the present embodiment, main control chip 500, for detecting that the resistance value between two contacts changes, comprising: detect that the resistance value between the first two contact is greater than preset resistive value with the difference recording the resistance value of preserving.Wherein, preset resistive value can be arranged according to technician's experience, to prevent user from being fallen by electronic equipment because of carelessness on the ground or collision, makes the carbon capacity of carbon film unit volume that small change occur; and then very little change in resistance detected, the situation of false triggering protection mechanism.
As a kind of Alternate embodiments in the present embodiment; electronic equipment 10 comprises: electronic signature equipment (as the U shield of industrial and commercial bank, the K treasured etc. of agricultural bank), smart card, card reader, dynamic password generating device (One-timePassword; be called for short OTP), point-of-sale terminal POS or above-mentioned electronic signature equipment, smart card, carry out arbitrarily the equipment that is combined to form in dynamic password generating device, all belong to the object of protection of the present invention.
By the electronic equipment that the present embodiment provides; even if can overcome in existing equipment, conductive rubber is opened; tamper-evident testing circuit also can not open circuit; cannot trigger protection mechanism; make assailant gently can steal the problem of sensitive data information; improve the security of electronic equipment, namely assailant is once tear machine open, and machine does not then work destroyed.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of preferred implementation of the present utility model comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiment person of ordinary skill in the field of the present utility model.
Should be appreciated that each several part of the present utility model can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment when not departing from principle of the present utility model and aim, revising, replacing and modification in scope of the present utility model.Scope of the present utility model is by claims and equivalency thereof.
Claims (15)
1. an electronic equipment, is characterized in that, described electronic equipment comprises:
Covering and circuit board; Described covering and described circuit board fit together;
The inside surface of described circuit board is provided with two contacts, the inside surface of described covering is provided with carbon film, described carbon film and described two contact, and be communicated with described two contacts.
2. electronic equipment according to claim 1, is characterized in that,
On the subregion that described carbon film is distributed in the inside surface of described covering or Zone Full.
3. electronic equipment according to claim 1 and 2, is characterized in that,
Described covering is metal clips conducting film.
4. electronic equipment according to claim 1 and 2, is characterized in that,
Described carbon film comprises: bar shaped carbon film, circular carbon film, square carbon film, linear carbon film or irregularly shaped carbon film.
5. electronic equipment according to claim 1 and 2, is characterized in that,
Described electronic equipment also comprises main control chip, and described main control chip is connected between described two contacts.
6. electronic equipment according to claim 5, is characterized in that,
Described main control chip is safety chip.
7. electronic equipment according to claim 1 and 2, is characterized in that,
Described electronic equipment comprises: carry out arbitrarily the equipment be combined to form in electronic signature equipment, smart card, card reader, dynamic password generating device, point-of-sale terminal POS or described electronic signature equipment, smart card, dynamic password generating device.
8. an electronic equipment, comprises circuit board, it is characterized in that,
Described circuit board is provided with two contacts, and is coated with carbon film, described carbon film and described two contact, and be communicated with described two contacts.
9. electronic equipment according to claim 8, is characterized in that,
Described carbon film is also coated with covering, and described covering is together with described carbon film, described press fit of circuit boards.
10. electronic equipment according to claim 9, is characterized in that,
Described carbon film comprises: bar shaped carbon film, circular carbon film, square carbon film, linear carbon film or irregularly shaped carbon film.
11. electronic equipments according to claim 9, is characterized in that,
Described covering is metal clips conducting film.
Electronic equipment described in 12. according to Claim 8 or 9 or 10 or 11, is characterized in that,
On the subregion that described carbon film is distributed in described circuit board or Zone Full.
13. electronic equipments according to claim 12, is characterized in that,
Described electronic equipment also comprises main control chip, and described main control chip is connected between described two contacts.
14. electronic equipments according to claim 13, is characterized in that,
Described main control chip is safety chip.
15. according to Claim 8 or 9 or 10 or 11 or electronic equipment described in 13 or 14, it is characterized in that,
Described electronic equipment comprises: carry out arbitrarily the equipment be combined to form in electronic signature equipment, smart card, card reader, dynamic password generating device, point-of-sale terminal POS or described electronic signature equipment, smart card, dynamic password generating device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633804.5U CN205038651U (en) | 2015-08-20 | 2015-08-20 | Electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520633804.5U CN205038651U (en) | 2015-08-20 | 2015-08-20 | Electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205038651U true CN205038651U (en) | 2016-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520633804.5U Active CN205038651U (en) | 2015-08-20 | 2015-08-20 | Electronic device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9750148B1 (en) | 2016-05-24 | 2017-08-29 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Anti-tamper mechanism and electronic device using the same |
| CN107766748A (en) * | 2017-10-25 | 2018-03-06 | 深圳市新国都支付技术有限公司 | The contact of data protecting device |
| CN109526179A (en) * | 2018-12-24 | 2019-03-26 | 出门问问信息科技有限公司 | Tear the detection device and detection method, electronic equipment of machine testing open for electronic equipment |
-
2015
- 2015-08-20 CN CN201520633804.5U patent/CN205038651U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9750148B1 (en) | 2016-05-24 | 2017-08-29 | Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. | Anti-tamper mechanism and electronic device using the same |
| CN107766748A (en) * | 2017-10-25 | 2018-03-06 | 深圳市新国都支付技术有限公司 | The contact of data protecting device |
| CN109526179A (en) * | 2018-12-24 | 2019-03-26 | 出门问问信息科技有限公司 | Tear the detection device and detection method, electronic equipment of machine testing open for electronic equipment |
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