CN113766819A - Anti-dismantling system and anti-dismantling method for shielding cover - Google Patents
Anti-dismantling system and anti-dismantling method for shielding cover Download PDFInfo
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- CN113766819A CN113766819A CN202110952886.XA CN202110952886A CN113766819A CN 113766819 A CN113766819 A CN 113766819A CN 202110952886 A CN202110952886 A CN 202110952886A CN 113766819 A CN113766819 A CN 113766819A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
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Abstract
The invention relates to a shielding cover anti-dismantling system and an anti-dismantling method thereof, wherein the system comprises: a shielding cover detachably covering the main board of the mobile phone; a central processing unit CPU, a storage chip, a safety chip and a power management chip which are carried in the shielding cover and electrically connected with each other; the covering switch is arranged between the shielding cover and the main board and is electrically connected with the safety chip; when the shielding cover is separated from the main board, the signal is cut off by the cover closing switch, and the safety chip is triggered to inform the CPU to delete the information of the storage chip. When the shielding cover is detached, the safety chip is triggered by the closing switch to inform the CPU to delete the information of the storage chip, so that the information in the storage chip is protected from being stolen, and the problem that the stored information is stolen by detaching the cover of the mobile phone, detaching the storage chip and transplanting and welding in the prior art is solved.
Description
Technical Field
The invention relates to the field of mobile phones, in particular to a shielding cover anti-dismounting system and an anti-dismounting method thereof.
Background
The mobile phone can store various information through the memory chip, which needs to ensure the security of the stored information. In the prior art, information security is generally performed by adopting a soft encryption method. Soft encryption is a software protection technique implemented without relying on special hardware, and uses an encryption integrated circuit to encrypt part of information.
However, in the prior art, the stored information can still be stolen by detaching the cover of the mobile phone, detaching the memory chip and performing transplantation welding, and the security of the information stored in the mobile phone is difficult to ensure.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a shielding cover anti-dismounting system and an anti-dismounting method thereof, and solves the problem that the safety of mobile phone stored information is difficult to ensure in the prior art.
The technical scheme for realizing the purpose is as follows:
the present invention provides a tamper-evident system for a shield cover, comprising:
a shielding cover detachably covering the main board of the mobile phone;
a Central Processing Unit (CPU), a storage chip, a safety chip and a power management chip which are carried in the shielding cover and are electrically connected with each other;
the covering switch is arranged between the shielding cover and the main board and is electrically connected with the safety chip; when the shielding cover is separated from the main board, the safety chip is triggered to inform the CPU to delete the information of the storage chip by cutting off a signal through the cover closing switch.
In a further improvement of the tamper-evident shield cover system of the present invention, the cover switch comprises:
the elastic sheet is arranged on the main board;
the contact is arranged on the shielding cover and corresponds to the elastic sheet, when the shielding cover covers the mainboard, the elastic sheet is in compression joint with the contact, when the shielding cover is separated from the mainboard, the elastic sheet and the contact are separated, so that a signal is cut off, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
In a further improvement of the tamper-evident shield cover system of the present invention, the cover switch comprises:
the multilayer wiring is arranged in the shielding cover and electrically connected with the safety chip;
when the shielding cover is separated from the main board or the shielding cover is damaged, the signal of the routing is cut off, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
The shielding cover anti-dismantling system is further improved in that the shielding cover anti-dismantling system also comprises an optical sensor arranged in the shielding cover and used for detecting ambient light; when the shielding cover is separated from the main board, the optical sensor detects ambient light and triggers the security chip to inform the CPU to delete the information of the storage chip.
The shielding cover anti-dismantling system is further improved in that the shielding cover anti-dismantling system also comprises at least two lamps arranged in the shielding cover, and the lamps flicker according to a designed coding rule; when the shielding cover is separated from the main board and shields the optical sensor to avoid detecting ambient light, the optical sensor cannot detect the flickering signal of the lamp, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
The shielding cover anti-dismantling system is further improved in that a security code is stored in the security chip;
and before the mobile phone is started and accesses the memory chip, the security chip is accessed to call the security code.
The shielding cover anti-dismounting system is further improved in that when the safety chip informs the CPU to delete the information of the memory chip and the mobile phone is in a power-off state, the CPU is continuously triggered to delete the information of the memory chip when the mobile phone is started.
The invention also provides a method for preventing the shielding cover from being disassembled, which comprises the following steps:
providing a shielding cover, and covering the shielding cover on a mainboard of the mobile phone in a detachable mode;
providing a Central Processing Unit (CPU), a storage chip, a safety chip and a power management chip, carrying in the shielding cover and electrically connecting with each other;
providing a cover switch which is arranged between the shielding cover and the mainboard and electrically connected with the safety chip;
when the shielding cover is separated from the main board, the safety chip is triggered to inform the CPU to delete the information of the storage chip through the closing switch cut-off signal.
The shielding cover anti-dismantling method is further improved in that an optical sensor for detecting ambient light is provided, and the optical sensor is arranged in the shielding cover;
when the shielding cover is separated from the main board, the optical sensor detects ambient light and triggers the security chip to inform the CPU to delete the information of the storage chip.
The shielding cover anti-dismantling method is further improved in that at least two lamps are provided and arranged in the shielding cover to flicker according to a designed coding rule;
when the shielding cover is separated from the main board and shields the optical sensor to avoid detecting ambient light, the optical sensor cannot detect the flickering signal of the lamp, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
The shielding cover anti-dismantling system and the anti-dismantling method thereof have the beneficial effects that:
the invention adopts three safety protection measures of a shielding cover, a Central Processing Unit (CPU), a storage chip, a safety chip, a power management chip, a cover switch, an optical sensor and a lamp. When the shielding cover is disassembled, the cover switch triggers the security chip to inform the CPU to delete the information of the storage chip, and the information in the storage chip is protected from being stolen as a first security protection measure, so that the problem that the stored information can still be stolen by disassembling the cover of the mobile phone, disassembling the storage chip and carrying out transplantation welding in the prior art is solved.
When the first protective measure is cracked and the shielding cover is separated from the main board, the optical sensor detects ambient light, the safety chip is triggered to inform the CPU to delete the information of the storage chip, and the information is used as a second protective measure to protect the information in the storage chip.
If the mode that the first safety protection measure covers the switch is cracked and before the shielding cover is taken away, the optical sensor is shielded in a certain mode to prevent the optical sensor from detecting ambient light, namely the second safety protection measure is also cracked, and then a third safety protection measure is started. When the lamp is supposed to be on, the light sensor cannot detect the brightness of the lamp, an abnormal signal is reported to the safety chip, and the safety chip informs the CPU to delete the information of the storage chip.
Drawings
Fig. 1 is a plan view of a shield cover tamper-evident system of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, a plan view of the tamper-evident system of the present invention is shown. As shown in fig. 1, the shield cover tamper system of the present invention comprises:
a shielding cover 10 detachably covering a main board of the mobile phone;
a central processing unit CPU20, a memory chip 30, a security chip 40 and a power management chip 50 mounted in the shield cover 10 and electrically connected to each other;
the cover switch is arranged between the shielding cover 10 and the main board and is electrically connected with the safety chip 40; the information of the memory chip 30 is deleted by turning off the signal by closing the switch when the shield cover 10 is separated from the main board, and triggering the security chip 40 to notify the CPU 20.
Further, the shield cover 10 is a PCB board. The PCB is a support body of the electronic components, a carrier for electrical connection of the electronic components and a circuit board manufactured by adopting electronic printing technology. The shielding cover of the conventional mobile phone is made of metal, and can only be used for preventing electromagnetic interference and shielding internal elements. The invention adopts the PCB board to manufacture the shielding cover which can be used for physically covering and protecting internal elements. If the shielding cover is detached, the cover-closing switch triggers the security chip to inform the CPU to delete the information of the storage chip, and the security chip can be used for protecting the information in the storage chip from being stolen as a first security protection measure.
Specifically, the memory chip 30 is a chip that stores programs and data. The power management chip 50 is a chip that plays roles in conversion, distribution, detection, and other power management of power in the electronic equipment system. The CPU power supply amplitude is mainly identified, corresponding short moment waves are generated, and a post-stage circuit is pushed to output power.
As a preferred embodiment of the tamper-evident shield cover system of the present invention, the cover switch includes: the elastic sheet is arranged on the main board; the contact 60 is provided on the shield cover 10 and corresponds to the spring piece, the spring piece is pressed against the contact 60 when the shield cover 10 covers the motherboard, and the spring piece and the contact 60 are separated when the shield cover 10 separates from the motherboard, thereby cutting off the signal, and triggering the security chip 40 to notify the CPU20 of deleting the information of the memory chip 30.
Specifically, the elastic sheet includes a welding section and a contact section which are integrally connected, the welding section is fixedly arranged on the main board, and the contact section is used for being in pressure connection with the contact on the shielding cover 10. When the elastic sheet is in compression joint with the contact 60, the electrification is realized, and the safety chip 40 can detect a physical detection signal of the elastic sheet; when the elastic sheet is separated from the contact 60, the power is cut off, the interruption of the physical detection signal of the elastic sheet is triggered, the physical detection signal of the elastic sheet is not detected by the security chip 40, and the security chip 40 is triggered to inform the CPU20 to delete the information of the memory chip 30. If the mobile phone is powered off, the mobile phone is deleted when the mobile phone is powered on next time.
As a preferred embodiment of the tamper-evident shield cover system of the present invention, the cover switch includes: a plurality of layers of wires disposed in the shield cover 10 and electrically connected to the security chip 40; when the shield cover 10 and the main board are separated or the shield cover 10 is damaged, the signal of the trace is cut off, and the secure chip 40 is triggered to notify the CPU20 of the information of the memory chip 30 being deleted.
Furthermore, the shielding cover comprises a cover body and a frame which is arranged and fixed on the cover body in a surrounding mode, the frame is connected with the main board through screws, and the cover body and the main board are arranged oppositely.
Specifically, all be equipped with the multilayer in lid and the frame and walk the line. If the shielding cover 10 is taken away or a hole is made in the shielding cover 10 to damage the shielding cover 10, the wiring signal is cut off, and the security chip 40 detects that the wiring signal is disconnected, the CPU20 is notified to delete the information of the storage chip 30, if the mobile phone is powered off, the information is deleted when the mobile phone is powered on next time, so that the information is prevented from being stolen, and a protection mechanism is realized.
As a preferred embodiment of the tamper-evident shield system of the present invention, the tamper-evident shield system further includes a light sensor 70 disposed in the shield cover 10 for detecting ambient light; when the shield cover 10 and the main board are separated, the light sensor 70 detects ambient light, and triggers the security chip 40 to notify the CPU of information for deleting the memory chip 30. As a second security measure, it can be used to protect the information in the memory chip from being stolen.
In particular, the optical sensor generally refers to a device that can sensitively sense light energy from ultraviolet light to infrared light and convert the light energy into an electrical signal. When the shield cover 10 is placed over the main board, the light sensor 70 is covered so that the light sensor 70 does not contact the external ambient light. When the shielding cover is broken, and the shielding cover 10 is taken away, the optical sensor 70 is exposed to the ambient light, the optical sensor 70 detects the ambient light and converts the ambient light into an electrical signal, and the security chip 40 is triggered to notify the CPU to delete the information of the storage chip 30, so that the information is prevented from being stolen.
As a preferred embodiment of the tamper system for the shielding cover of the present invention, the tamper system further comprises at least two lamps 80 disposed in the shielding cover 10, and the lamps flash according to a designed coding rule; when the shield cover 10 is separated from the main board and the light sensor 70 is shielded to avoid detecting the ambient light, the light sensor 70 cannot detect the blinking signal of the lamp, and the security chip 40 is triggered to notify the CPU20 of deleting the information of the memory chip 30. As a third security measure, it can be used to protect the information in the memory chip from being stolen.
In the present embodiment, the lamp 80 is an LED lamp. Two LED lamps are adopted, and the two LED lamps flicker according to a specific coding rule through coding.
If the first safety protection measure is broken by closing the switch and the light sensor 70 is shielded by a certain method before the shielding cover is taken away, the light sensor 70 is prevented from detecting the ambient light, that is, the second safety protection measure is broken, and then the third safety protection measure is started. Specifically, two LED lamps in the shielding cover can be turned on and off through codes, and flicker is carried out according to the designed coding rule. If the light sensor 70 cannot detect the brightness of the lamp when the lamp should be on, an abnormal signal is reported to the security chip, and the security chip informs the CPU to delete the information of the memory chip 30, for example, the mobile phone is deleted when the mobile phone is powered off.
As a preferred embodiment of the tamper-proof system for shielding cover of the present invention, the security chip 40 has a security code stored therein; before the mobile phone is started and accesses the storage chip 30, the security chip 40 is accessed to call the security code.
As a preferred embodiment of the tamper-proof system for shielding cover of the present invention, when the security chip 40 notifies the CPU20 that the information stored in the memory chip 30 is deleted and the mobile phone is in the power-off state, the security chip will continue to trigger the CPU20 to delete the information stored in the memory chip 30 when the mobile phone is powered on.
Furthermore, the system has low power consumption and low working voltage. Even if the mobile phone is automatically powered off due to low power, the system can still be supplied for running for a period of time.
The invention also provides a method for preventing the shielding cover from being disassembled, which comprises the following steps:
providing a shielding cover 10, and covering the shielding cover 10 on a mainboard of the mobile phone in a detachable mode;
providing a central processing unit CPU20, a memory chip 30, a security chip 40 and a power management chip 50, which are mounted in the shielding cover 10 and electrically connected with each other;
providing a cover switch which is arranged between the shielding cover 10 and the mainboard and is electrically connected with the safety chip 40;
the signal is cut off by the closing switch when the shield cover 10 is separated from the main board, triggering the security chip 40 to notify the CPU20 of the information to delete the memory chip 30.
The invention adopts the PCB board to manufacture the shielding cover which can be used for physically covering and protecting internal elements. If the shielding cover is detached, the cover-closing switch triggers the security chip to inform the CPU to delete the information of the storage chip, and the security chip can be used for protecting the information in the storage chip from being stolen as a first security protection measure.
As a preferred embodiment of the tamper-evident method for the shielding cover of the present invention, the method further includes providing a light sensor 70 for detecting ambient light, and disposing the light sensor 70 in the shielding cover 10; when the shield cover 10 and the main board are separated, the light sensor 70 detects ambient light, and triggers the security chip 40 to notify the CPU20 of the information to delete the memory chip 30. And as a second safety protection measure, when the first protection measure is cracked, triggering the second protection measure to protect the information in the storage chip from being stolen.
As a preferred embodiment of the method for preventing the detachment of the shielding cover, the method further includes providing at least two lamps 80, which are disposed in the shielding cover 10 and flash according to a designed coding rule; when the shield cover 10 is separated from the main board and the light sensor 70 is shielded to avoid detecting the ambient light, the light sensor 70 cannot detect the blinking signal of the lamp 80, and the security chip 40 is triggered to notify the CPU20 to delete the information of the memory chip 30. And as a third safety protection measure, when the first protection measure and the second protection measure are cracked, triggering the third protection measure to protect the information in the storage chip from being stolen.
The shielding cover anti-dismantling system and the anti-dismantling method thereof have the beneficial effects that:
the invention adopts three safety protection measures of a shielding cover, a Central Processing Unit (CPU), a storage chip, a safety chip, a power management chip, a cover switch, an optical sensor and a lamp. When the shielding cover is disassembled, the cover switch triggers the security chip to inform the CPU to delete the information of the storage chip, and the information in the storage chip is protected from being stolen as a first security protection measure, so that the problem that the stored information can still be stolen by disassembling the cover of the mobile phone, disassembling the storage chip and carrying out transplantation welding in the prior art is solved.
When the first protective measure is cracked and the shielding cover is separated from the main board, the optical sensor detects ambient light, the safety chip is triggered to inform the CPU to delete the information of the storage chip, and the information is used as a second protective measure to protect the information in the storage chip.
If the mode that the first safety protection measure covers the switch is cracked and before the shielding cover is taken away, the optical sensor is shielded in a certain mode to prevent the optical sensor from detecting ambient light, namely the second safety protection measure is also cracked, and then a third safety protection measure is started. When the lamp is supposed to be on, the light sensor cannot detect the brightness of the lamp, an abnormal signal is reported to the safety chip, and the safety chip informs the CPU to delete the information of the storage chip.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. A shield cover tamper-evident system, comprising:
a shielding cover detachably covering the main board of the mobile phone;
a Central Processing Unit (CPU), a storage chip, a safety chip and a power management chip which are carried in the shielding cover and are electrically connected with each other;
the covering switch is arranged between the shielding cover and the main board and is electrically connected with the safety chip; when the shielding cover is separated from the main board, the safety chip is triggered to inform the CPU to delete the information of the storage chip by cutting off a signal through the cover closing switch.
2. The shield cover tamper system of claim 1, wherein the closure switch comprises:
the elastic sheet is arranged on the main board;
the contact is arranged on the shielding cover and corresponds to the elastic sheet, when the shielding cover covers the mainboard, the elastic sheet is in compression joint with the contact, when the shielding cover is separated from the mainboard, the elastic sheet and the contact are separated, so that a signal is cut off, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
3. The shield cover tamper system of claim 1, wherein the closure switch comprises:
the multilayer wiring is arranged in the shielding cover and electrically connected with the safety chip;
when the shielding cover is separated from the main board or the shielding cover is damaged, the signal of the routing is cut off, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
4. The shield-cover tamper system of claim 1,
the light sensor is arranged in the shielding cover and used for detecting ambient light; when the shielding cover is separated from the main board, the optical sensor detects ambient light and triggers the security chip to inform the CPU to delete the information of the storage chip.
5. The shield-cover tamper system of claim 4,
the lamp cover is characterized by also comprising at least two lamps arranged in the shielding cover, and the lamps flicker according to a designed coding rule; when the shielding cover is separated from the main board and shields the optical sensor to avoid detecting ambient light, the optical sensor cannot detect the flickering signal of the lamp, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
6. The shield-cover tamper system of claim 1,
the security chip is stored with a security code;
and before the mobile phone is started and accesses the memory chip, the security chip is accessed to call the security code.
7. The shield-cover tamper system of claim 1,
and when the safety chip informs the CPU to delete the information of the memory chip and the mobile phone is in a power-off state, the safety chip continuously triggers the CPU to delete the information of the memory chip when the mobile phone is started.
8. A method for preventing a shielding cover from being disassembled is characterized by comprising the following steps:
providing a shielding cover, and covering the shielding cover on a mainboard of the mobile phone in a detachable mode;
providing a Central Processing Unit (CPU), a storage chip, a safety chip and a power management chip, carrying in the shielding cover and electrically connecting with each other;
providing a cover switch which is arranged between the shielding cover and the mainboard and electrically connected with the safety chip;
when the shielding cover is separated from the main board, the safety chip is triggered to inform the CPU to delete the information of the storage chip through the closing switch cut-off signal.
9. The tamper-evident method of claim 8, wherein,
the method also comprises the steps of providing a light sensor for detecting ambient light, and arranging the light sensor in the shielding cover;
when the shielding cover is separated from the main board, the optical sensor detects ambient light and triggers the security chip to inform the CPU to delete the information of the storage chip.
10. The tamper-evident method of claim 9, wherein,
the shielding cover is provided with at least two lamps which are arranged in the shielding cover and flash according to a designed coding rule;
when the shielding cover is separated from the main board and shields the optical sensor to avoid detecting ambient light, the optical sensor cannot detect the flickering signal of the lamp, and the safety chip is triggered to inform the CPU to delete the information of the storage chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952886.XA CN113766819B (en) | 2021-08-19 | 2021-08-19 | Anti-disassembly system and anti-disassembly method for shielding cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952886.XA CN113766819B (en) | 2021-08-19 | 2021-08-19 | Anti-disassembly system and anti-disassembly method for shielding cover |
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| Publication Number | Publication Date |
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| CN113766819A true CN113766819A (en) | 2021-12-07 |
| CN113766819B CN113766819B (en) | 2023-09-29 |
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| CN113766819B (en) | 2023-09-29 |
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Effective date of registration: 20230728 Address after: No. 888, Shengli Road, Qingpu Industrial Park, Qingpu District, Shanghai, 201799 (No. 10055, Songze Avenue) Applicant after: SHANGHAI SUNRISE SIMCOM ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 200335 room 702, building 1, 633 Jinzhong Road, Changning District, Shanghai Applicant before: SHANGHAI SIMCOM Ltd. |
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