CN103034155B - Printed circuit board (PCB) for protecting liquid crystal signal and handheld device for protecting liquid crystal signal - Google Patents
Printed circuit board (PCB) for protecting liquid crystal signal and handheld device for protecting liquid crystal signal Download PDFInfo
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- CN103034155B CN103034155B CN201210477368.8A CN201210477368A CN103034155B CN 103034155 B CN103034155 B CN 103034155B CN 201210477368 A CN201210477368 A CN 201210477368A CN 103034155 B CN103034155 B CN 103034155B
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- liquid crystal
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Abstract
The invention provides a printed circuit board (PCB) for protecting a liquid crystal signal, a method for protecting the liquid crystal signal and a handheld device for protecting the liquid crystal signal. The PCB for protecting the liquid crystal signal comprises a liquid crystal signal via hole, a security monitoring module and a protection board with a mesh line, wherein one side, provided with the mesh line, of the protection board directly faces the liquid crystal signal via hole, and the mesh line is welded on a pad of the PCB and is in electric connection with the security monitoring module through a PCB route. The security monitoring module is used for sending monitoring signals to the protection board through the mesh line. The protection board is used for sending feedback signals to the security monitoring module after receiving the monitoring signals. The security monitoring module is also used for judging whether the feedback signals are received in preset time, and if the feedback signals are received, the security monitoring module judges that the liquid crystal signal is safe and continues to send the monitoring signals to the protection board; and if the feedback signals are not received, the security monitoring module judges that the liquid crystal signal is stolen.
Description
Technical field
In the present invention relates to pay by mails, the protection of electronic equipment (as POS machine) process of exchange user information safety, relates in particular to a kind of pcb board, method and handheld device of protecting liquid crystal signal.
Background technology
Along with the development of display technique, at present for example, on electronic payment terminal (POS machine), it is more and more that various liquid crystal use, simultaneously along with scientific and technological development, the continuous appearance of new technology, some lawless person, by utilizing these new technology, obtains the liquid crystal signal of mainboard to display screen, thereby reaches the bad object of oneself.As shown in Figure 1, lawless person can detect pcb board from the via hole of liquid crystal display coherent signal by probe and show relevant signal, and these signals are linked in relevant instrument and are analyzed, thereby obtain this liquid crystal display control method, design relevant bug, be implanted in machine, in the time that user uses, these bug can show that some have misleading information, induction user inputs some personal information, not for example the interface of input password originally, by the bug implanting, but display reminding input password, cause user to input password, on backstage, password is stolen again, finally cause user's economic interests to be encroached on.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of pcb board, method and handheld device of protecting liquid crystal signal.
For addressing the above problem, a kind of technical scheme that the present invention adopts is: a kind of pcb board of protecting liquid crystal signal is provided, which is provided with liquid crystal signal via, the pcb board of described protection liquid crystal signal also comprises security monitoring module and is provided with the fender of mesh line, described fender is provided with the one side of mesh line just to described liquid crystal signal via, and described mesh wire bonding is electrically connected with described security monitoring module on the pad of pcb board and by pcb board cabling;
Described security monitoring module is for sending pilot signal by mesh alignment fender;
Described fender for sending feedback signal to security monitoring module in the time receiving described pilot signal;
Described security monitoring module also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender; Judge that liquid crystal signal is stolen if do not receive described feedback signal.
Wherein, described pad comprises the second pad that pilot signal is transferred to the first pad of fender and feedback signal is transferred to security monitoring module from fender, and described the first pad and the second pad are arranged on the periphery of described liquid crystal signal via.
Wherein, the pcb board of protection liquid crystal signal also comprises alarm unit, and described alarm unit is electrically connected with described security monitoring module.
Wherein, the outside surface of described fender is covered with described mesh line.
Wherein, the gap between described liquid crystal signal via is also provided with described pad.
For addressing the above problem, the present invention also provides a kind of technical scheme: a kind of method of protecting liquid crystal signal is provided, comprises:
Security monitoring module sends pilot signal to fender;
Described fender receives described pilot signal, and sends feedback signal to security monitoring module;
Described security monitoring module judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safe, continue to send described pilot signal to fender; If do not receive described feedback signal, judge that liquid crystal signal is stolen.
Wherein, the method for protection liquid crystal signal also comprises: described security monitoring module sends an alerting signal to alarm unit and starts alarm unit.
For addressing the above problem, the present invention also provides another kind of technical scheme: a kind of handheld device of protecting liquid crystal signal is provided, comprise the pcb board of protection liquid crystal signal, the pcb board of described protection liquid crystal signal is provided with liquid crystal signal via, the pcb board of described protection liquid crystal signal also comprises security monitoring module and is provided with the fender of mesh line, described fender is provided with the one side of mesh line just to described liquid crystal signal via, and described mesh wire bonding is electrically connected with described security monitoring module on the pad of pcb board and by pcb board cabling;
Described security monitoring module is for sending pilot signal by mesh alignment fender;
Described fender for sending feedback signal to security monitoring module in the time receiving described pilot signal;
Described security monitoring module also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender; Judge that liquid crystal signal is stolen if do not receive described feedback signal.
Wherein, described pad comprises the second pad that pilot signal is transferred to the first pad of fender and feedback signal is transferred to security monitoring module from fender, and described the first pad and the second pad arrange the periphery of described liquid crystal in signal via.
Wherein, the handheld device of protection liquid crystal signal also comprises alarm unit, and described alarm unit is electrically connected with described security monitoring module.
Wherein, the outside surface of described fender is covered with described mesh line.
Wherein, the gap between described liquid crystal signal via is also provided with described pad.
The invention has the beneficial effects as follows: be different from prior art lawless person and can detect pcb board from the via hole of liquid crystal display coherent signal by probe and show relevant signal, and these signals are linked in relevant instrument and are analyzed, thereby obtain this liquid crystal display control method, finally cause user to suffer economic loss, the present invention arranges a fender that is furnished with mesh line on liquid crystal signal, after equipment electrifies, security monitoring module produces pilot signal, this pilot signal is sent to fender, and determine whether safety of liquid crystal signal by judging whether to receive feedback signal that fender sends.
Brief description of the drawings
Fig. 1 is the structural representation of pcb board in prior art;
Fig. 2 is the Standard figure that protects the pcb board of liquid crystal signal in an embodiment of the present invention;
Fig. 3 is pilot signal in an embodiment of the present invention " walking " loop;
Fig. 4 is the schematic diagram of the loop fracture that causes when pad is destroyed in a situation;
Fig. 5 is the schematic diagram of the loop fracture that causes when pad is destroyed in another situation;
Fig. 6 is the cutaway side view of protecting the pcb board of liquid crystal signal in an embodiment of the present invention;
Fig. 7 is the Wiring structure of mesh line in one embodiment of the invention;
Fig. 8 is the method flow diagram of protecting liquid crystal signal in an embodiment of the present invention.
Label declaration
1-security monitoring module
2-liquid crystal signal via
3-pad
31-the first pad
32-the second pad
4-fender
Embodiment
By describing technology contents of the present invention, structural attitude in detail, being realized object and effect, below in conjunction with embodiment and coordinate accompanying drawing to be explained in detail.
In the technical program, it is exactly PCB cabling that described mesh line refers to, and this cabling will be walked into mesh shape, as shown in Figure 7.
Refer to Fig. 2 to 7, present embodiment provides a kind of pcb board of protecting liquid crystal signal, which is provided with liquid crystal signal via 2, comprises security monitoring module 1, is arranged on the pad 3 of liquid crystal signal via 2 peripheries and is provided with the fender 4 of mesh line; Described fender 4 is provided with the one side of mesh line just to liquid crystal signal via 2; Described mesh wire bonding is electrically connected with described security monitoring module 1 on the pad 3 of pcb board and by the cabling on pcb board.
Described security monitoring module 1 is for sending pilot signal by mesh alignment fender 4; Described fender 4 for sending feedback signal to security monitoring module 1 in the time receiving described pilot signal; Described security monitoring module 1 also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender 4; Judge that liquid crystal signal is stolen if do not receive described feedback signal.
Described pad 3 comprises the second pad 32 that pilot signal is transferred to the first pad 31 of fender and feedback signal is exported from fender; Described security monitoring module 1 produces pilot signal and by the first pad 31, described pilot signal is transferred to the mesh line of described fender 4, and described mesh line is sent to described security monitoring module 1 by the feedback signal of fender 4 by the second pad 32.
In present embodiment and in below describing, described feedback signal is the pilot signal that security monitoring module 1 sends.Under normal circumstances: after equipment electrifies, security monitoring module 1 produces pilot signal, and by the first pad 31, this pilot signal is sent to fender 4, pilot signal and then be transferred in mesh line; Pilot signal is transferred back to security monitoring module 1 by the second pad 32 again after " walking " circle in mesh line.
Refer to Fig. 4 and Fig. 5; if lawless person wants to obtain by liquid crystal signal via 2 coherent signal of liquid crystal display; so need fender 4 to take away or perforate on fender 4; " walking " loop of pilot signal will be destroyed like this; pilot signal just can not be back to security monitoring module 1; in the time that security monitoring module 1 does not receive the pilot signal sending, can think that fender 4 is destroyed.Shown in Fig. 4 is the coherent signal (hereinafter to be referred as liquid crystal signal) that lawless person directly takes away fender 4 to obtain liquid crystal display; now pad 3 is destroyed; pilot signal can not enter in the mesh line of fender 4 by the first pad 31; " walking " loop of pilot signal is destroyed, can not be transferred back to security monitoring module 1.Shown in Fig. 5 is that lawless person cuts open protection 4 or perforate on fender 4, can destroy like this mesh line on fender 4, and pilot signal " walking " circuit on fender 4 is destroyed, can not be transferred back to equally security monitoring module 1.
Described in above, be not difficult to find out, the present invention produces pilot signal by security monitoring module 1, and this pilot signal is sent to fender 4, and determines whether safety of liquid crystal signal by judging whether this pilot signal returns.In specific embodiment, the pcb board of protection liquid crystal signal also comprises alarm unit, and described alarm unit is electrically connected with described security monitoring module 1.In the time that security monitoring module 1 does not receive the pilot signal returning, judge that fender 4 is destroyed, liquid crystal signal suffers stealing of lawless person, now security monitoring module 1 sends an alerting signal to alarm unit, starts alarm unit and reports to the police.In a preferred embodiment, also can send a warning note to user's mobile phone, call user's attention information security.
Refer to Fig. 2, the gap between described liquid crystal signal via 2 is also provided with described pad 3 again.Like this can more protection plate 4 and pcb board between strength of joint, strengthen the protection of liquid crystal signal.
In specific embodiment, as shown in Figure 6, the whole outside surface of described fender 4 is all covered with described mesh line.Prevent that like this lawless person from getting around mesh cabling direct detection to liquid crystal signal by gimmick accurately.Fig. 7 is a kind of Wiring structure of mesh line on fender 4.
Refer to Fig. 8, present embodiment provides a kind of method of protecting liquid crystal signal, comprising:
Security monitoring module 1 sends pilot signal to fender 4;
Described fender 4 receives described pilot signal, and sends feedback signal to security monitoring module 1;
Described security monitoring module 1 judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safe, continue to send described pilot signal to fender 4; If do not receive described feedback signal, judge that liquid crystal signal is stolen.
In present embodiment and in below describing, described feedback signal is the pilot signal that security monitoring module 1 sends.Really as shown in Figure 8, security monitoring module 1 does not receive pilot signal two kinds of situations: one is that the first pad 31 is destroyed, and pilot signal cannot enter from the first pad 31; Another kind of situation is that the mesh line on fender 4 is destroyed, and pilot signal cannot be exported from the second pad 32.Cause the reason of both of these case to illustrate in the preceding article, do not repeat them here.
Concrete, after security monitoring module judges that liquid crystal signal is stolen, described security monitoring module sends an alerting signal to alarm unit and starts alarm unit.
The present invention also provides a kind of handheld device of protecting liquid crystal signal, comprise the pcb board of protection liquid crystal signal, refer to again Fig. 2-Fig. 7, the pcb board of described protection liquid crystal signal is provided with liquid crystal signal via 2, and the pcb board of protection liquid crystal signal also comprises security monitoring module 1, is arranged on the pad 3 of liquid crystal signal via 2 peripheries and is provided with the fender 4 of mesh line; Described fender 4 is provided with the one side of mesh line just to liquid crystal signal via 2; Described mesh wire bonding is electrically connected with described security monitoring module 1 on the pad 3 of pcb board and by the cabling on pcb board.In present embodiment, handheld device can be POS machine, or has IPAD, the mobile phone etc. of electronic payment function.
Described security monitoring module 1 is for sending pilot signal by mesh alignment fender 4; Described fender 4 for sending feedback signal to security monitoring module 1 in the time receiving described pilot signal; Described security monitoring module 1 also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender 4; Judge that liquid crystal signal is stolen if do not receive described feedback signal.
Described pad 3 comprises the second pad 32 that pilot signal is transferred to the first pad 31 of fender and feedback signal is exported from fender; Described security monitoring module 1 produces pilot signal and by the first pad 31, described pilot signal is transferred to the mesh line of described fender 4, and described mesh line is sent to described security monitoring module 1 by the feedback signal of fender 4 by the second pad 32.
In present embodiment and in below describing, described feedback signal is the pilot signal that security monitoring module 1 sends.Under normal circumstances: after equipment electrifies, security monitoring module 1 produces pilot signal, and by the first pad 31, this pilot signal is sent to fender 4, pilot signal and then be transferred in mesh line; Pilot signal is transferred back to security monitoring module 1 by the second pad 32 again after " walking " circle in mesh line.
Refer to Fig. 4 and Fig. 5; if lawless person wants to obtain by liquid crystal signal via 2 coherent signal of liquid crystal display; so need fender 4 to take away or perforate on fender 4; " walking " loop of pilot signal will be destroyed like this; pilot signal just can not be back to security monitoring module 1; in the time that security monitoring module 1 does not receive the pilot signal sending, can think that fender 4 is destroyed.Shown in Fig. 4 is the coherent signal (hereinafter to be referred as liquid crystal signal) that lawless person directly takes away fender 4 to obtain liquid crystal display; now pad 3 is destroyed; pilot signal can not enter in the mesh line of fender 4 by the first pad 31; " walking " loop of pilot signal is destroyed, can not be transferred back to security monitoring module 1.Shown in Fig. 5 is that lawless person cuts open protection 4 or perforate on fender 4, can destroy like this mesh line on fender 4, and pilot signal " walking " circuit on fender 4 is destroyed, can not be transferred back to equally security monitoring module 1.
Described in above, be not difficult to find out, the present invention produces pilot signal by security monitoring module 1, and this pilot signal is sent to fender 4, and determines whether safety of liquid crystal signal by judging whether this pilot signal returns.In specific embodiment, the pcb board of protection liquid crystal signal also comprises alarm unit, and described alarm unit is electrically connected with described security monitoring module 1.In the time that security monitoring module 1 does not receive the pilot signal returning, judge that fender 4 is destroyed, liquid crystal signal suffers stealing of lawless person, now security monitoring module 1 sends an alerting signal to alarm unit, starts alarm unit and reports to the police.In a preferred embodiment, also can send a warning note to user's mobile phone, call user's attention information security.
Refer to Fig. 2, the gap between described liquid crystal signal via 2 is also provided with described pad 3 again.Like this can more protection plate 4 and pcb board between strength of joint, strengthen the protection of liquid crystal signal.
In specific embodiment, as shown in Figure 6, the whole outside surface of described fender 4 is all covered with described mesh line.Prevent that like this lawless person from getting around mesh cabling direct detection to liquid crystal signal by gimmick accurately.Fig. 7 is a kind of Wiring structure of mesh line on fender 4.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes instructions of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (4)
1. protect the pcb board of liquid crystal signal for one kind, which is provided with liquid crystal signal via, it is characterized in that, the pcb board of described protection liquid crystal signal also comprises security monitoring module and is provided with the fender of mesh line, described fender is provided with the one side of mesh line just to described liquid crystal signal via, and described mesh wire bonding is electrically connected with described security monitoring module on the pad of pcb board and by pcb board cabling;
Described security monitoring module is for sending pilot signal by mesh alignment fender;
Described fender for sending feedback signal to security monitoring module in the time receiving described pilot signal;
Described security monitoring module also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender; Judge that liquid crystal signal is stolen if do not receive described feedback signal;
Described pad comprises the second pad that pilot signal is transferred to the first pad of fender and feedback signal is transferred to security monitoring module from fender, and described the first pad and the second pad are arranged on the periphery of described liquid crystal signal via;
Also comprise alarm unit, described alarm unit is electrically connected with described security monitoring module.
2. the pcb board of protection liquid crystal signal according to claim 1, is characterized in that, the outside surface of described fender is covered with described mesh line, and described fender is also provided with two-layer the above mesh line simultaneously.
3. according to the pcb board of the protection liquid crystal signal described in claim 1-2 any one, it is characterized in that, the gap between described liquid crystal signal via is also provided with described pad.
4. protect the handheld device of liquid crystal signal for one kind, it is characterized in that, comprise the pcb board of protection liquid crystal signal, the pcb board of described protection liquid crystal signal is provided with liquid crystal signal via, the pcb board of described protection liquid crystal signal also comprises security monitoring module and is provided with the fender of mesh line, described fender is provided with the one side of mesh line just to described liquid crystal signal via, and described mesh wire bonding is electrically connected with described security monitoring module on the pad of pcb board and by pcb board cabling;
Described security monitoring module is for sending pilot signal by mesh alignment fender;
Described fender for sending feedback signal to security monitoring module in the time receiving described pilot signal;
Described security monitoring module also judges within the preset time, whether to receive described feedback signal; If receive described feedback signal, judge that liquid crystal signal is safety and continues to send described pilot signal to fender; Judge that liquid crystal signal is stolen if do not receive described feedback signal;
Described pad comprises the second pad that pilot signal is transferred to the first pad of fender and feedback signal is transferred to security monitoring module from fender, and described the first pad and the second pad are arranged on the periphery of described liquid crystal signal via;
Also comprise alarm unit, described alarm unit is electrically connected with described security monitoring module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477368.8A CN103034155B (en) | 2012-11-22 | 2012-11-22 | Printed circuit board (PCB) for protecting liquid crystal signal and handheld device for protecting liquid crystal signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210477368.8A CN103034155B (en) | 2012-11-22 | 2012-11-22 | Printed circuit board (PCB) for protecting liquid crystal signal and handheld device for protecting liquid crystal signal |
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| Publication Number | Publication Date |
|---|---|
| CN103034155A CN103034155A (en) | 2013-04-10 |
| CN103034155B true CN103034155B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210477368.8A Active CN103034155B (en) | 2012-11-22 | 2012-11-22 | Printed circuit board (PCB) for protecting liquid crystal signal and handheld device for protecting liquid crystal signal |
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| CN (1) | CN103034155B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470225B (en) * | 2014-12-04 | 2018-01-09 | 福建联迪商用设备有限公司 | Method for producing circuit board and method of manufacturing electronic apparatus |
| CN105825599B (en) * | 2016-04-06 | 2018-10-30 | 上海动联信息技术股份有限公司 | A kind of multiple-protection system, method and the POS machine of the anti-intrusion of POS machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1998080A (en) * | 2004-04-08 | 2007-07-11 | W.L.戈尔及合伙人(英国)有限公司 | Tamper respondent covering |
| CN101533056A (en) * | 2009-04-15 | 2009-09-16 | 百富计算机技术（深圳）有限公司 | A detecting mechanism for display |
| CN102324139A (en) * | 2011-03-30 | 2012-01-18 | 青岛海信智能商用设备有限公司 | Bank card payment terminal equipment with liquid crystal data anti-tampering protection device |
| CN102573283A (en) * | 2011-12-29 | 2012-07-11 | 福建联迪商用设备有限公司 | PCB (printed circuit board) safety protective board and PCB safety protective device |
-
2012
- 2012-11-22 CN CN201210477368.8A patent/CN103034155B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1998080A (en) * | 2004-04-08 | 2007-07-11 | W.L.戈尔及合伙人(英国)有限公司 | Tamper respondent covering |
| CN101533056A (en) * | 2009-04-15 | 2009-09-16 | 百富计算机技术（深圳）有限公司 | A detecting mechanism for display |
| CN102324139A (en) * | 2011-03-30 | 2012-01-18 | 青岛海信智能商用设备有限公司 | Bank card payment terminal equipment with liquid crystal data anti-tampering protection device |
| CN102573283A (en) * | 2011-12-29 | 2012-07-11 | 福建联迪商用设备有限公司 | PCB (printed circuit board) safety protective board and PCB safety protective device |
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| CN103034155A (en) | 2013-04-10 |
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