CN101853347A - Dismounting monitoring method and device - Google Patents
Dismounting monitoring method and device Download PDFInfo
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- CN101853347A CN101853347A CN201010163656A CN201010163656A CN101853347A CN 101853347 A CN101853347 A CN 101853347A CN 201010163656 A CN201010163656 A CN 201010163656A CN 201010163656 A CN201010163656 A CN 201010163656A CN 101853347 A CN101853347 A CN 101853347A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012806 monitoring device Methods 0.000 claims abstract description 11
- 238000013475 authorization Methods 0.000 claims description 48
- 230000001681 protective effect Effects 0.000 claims description 15
- 230000011664 signaling Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 102100024061 Integrator complex subunit 1 Human genes 0.000 description 9
- 101710092857 Integrator complex subunit 1 Proteins 0.000 description 9
- 230000006870 function Effects 0.000 description 5
- 230000001960 triggered effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 102100028043 Fibroblast growth factor 3 Human genes 0.000 description 2
- 108050002021 Integrator complex subunit 2 Proteins 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 101000767160 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) Intracellular protein transport protein USO1 Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
- G06F21/86—Secure or tamper-resistant housings
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Abstract
The invention discloses a dismounting monitoring device, which comprises a judging module, a switch module, a processor and a storage module, wherein the judging module is used for judging the validity of the dismounting; the switch module is used for sending discontinuing signals to the processor; the processor is used for recording illegal dismounting information after receiving the discontinuing signals; and the storage module is used for storing the illegal dismounting information. The invention also discloses a dismounting monitoring method. Through judging the validity of the dismounting, the invention uses the processor for recording and storing the illegal dismounting information in a discontinuing signal sending mode when the dismounting is illegal, so during the equipment maintenance, the illegal dismounting possibly suffered by the equipment can be obtained through invoking the stored information, the monitoring on the illegal dismounting can be effectively realized, and the responsibility among manufacturers, providers and users can be defined.
Description
Technical Field
The present invention relates to monitoring technologies for electronic devices, and in particular, to a detachment monitoring method and apparatus.
Background
The conventional handheld electronic equipment is mainly used for preventing illegal disassembly, an automatic monitoring device mainly aims at preventing theft, the device has an alarm function in order to prevent the equipment from being abnormally lost, and the anti-theft device is often insufficient for protecting a circuit board.
Protection of board level circuit board is to the user, and the producer is in order to protect the circuit board not dismantled by the user in the guarantee period of guaranteeing the quality, often pastes the label on board level circuit protective housing, though can play the effect of preventing illegal dismantlement to a certain extent, dismantles to some malicious activities such as tearing the label, resumes the position of label after dismantling again, but can not play the effect that should, and often lead to the right and blame not clear moreover, causes to conflict between producer and the user. Moreover, some lawless persons use the leak of the labeling way to disassemble the original equipment parts, so as to claim for the manufacturer or retail department, on one hand, the image of the manufacturer is damaged, and on the other hand, the legal rights of the vast consumers are also infringed. Improvements are therefore needed.
Disclosure of Invention
The invention aims to solve the main technical problem of providing a disassembly monitoring method capable of effectively preventing illegal disassembly and a monitoring device based on the method.
In order to solve the above problems, the present invention provides a detachment monitoring device, which includes a determination module, a switch module, a processor and a storage module; wherein,
the judgment module is used for judging the disassembly validity;
the switch module is used for sending an interrupt signal to the processor;
the processor is used for recording illegal disassembly information after receiving the interrupt signal;
the storage module is used for storing the illegal disassembly information.
Wherein the determining module is further configured to: monitoring whether an authorization code is input; if the input authorization code is monitored, judging whether the input authorization code is correct or not; if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
The device further comprises a standby power supply, wherein the switch module comprises a spring switch in contact with the protective shell and is also used for starting the standby power supply to supply power when the protective shell is illegally opened.
The switch module is connected with an interrupt input pin of the processor and is also used for triggering low level to generate interrupt when the protective shell is illegally opened.
The switch module is also used for starting the standby power supply to supply power and sending an interrupt signal to the processor when legal disassembly is monitored;
the processor is also used for recording legal disassembly information after receiving the interrupt signal;
the storage module is also used for storing the legal disassembly information.
The invention also provides a disassembly monitoring method, which comprises the following steps:
the judgment module judges the disassembly validity;
if the switch module connected with the protective shell monitors illegal disassembly, an interrupt signal is sent to the processor;
the processor records illegal disassembly information;
the memory stores illegal disassembly information.
Wherein the judging the disassembly validity comprises:
monitoring whether an authorization code is input;
if the input authorization code is monitored, judging whether the input authorization code is correct or not;
if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
The method further comprises the step of starting a standby power supply to supply power if the switch module detects that the protective shell is illegally opened.
Wherein said signaling an interrupt to a processor comprises:
the switch module sends a low level signal to an interrupt pin of the processor to generate an interrupt.
The method further comprises the following steps:
if the switch module monitors that the module is legally detached, the standby power supply is started to supply power;
the switch module sends an interrupt signal to the processor;
the processor records legal disassembly information;
the memory stores legal disassembly information.
The invention has the beneficial effects that:
(1) according to the invention, through judging the legality of the disassembly, when the disassembly is illegal, the processor records and stores the information about the illegal disassembly in an interruption sending mode, so that the illegal disassembly possibly encountered by the equipment can be acquired by calling the stored information during equipment maintenance, the monitoring on the illegal disassembly is effectively realized, and the responsibility among manufacturers, suppliers and users is clarified.
(2) The invention starts the standby power supply to supply power, replaces the main power supply of the equipment, and ensures the monitoring process; the monitoring function is automatically executed by controlling the starting of the standby power supply and the sending interruption through the switch module, and the monitoring device is simple in structure and easy to realize.
(3) The invention can also record and store legal disassembly information when judging that the disassembly is legal, and further divide and clear authority through the maintenance of the disassembly information.
(4) The invention has small power consumption and strong adaptability, and can be realized on general electronic equipment.
Drawings
FIG. 1 shows a schematic structural view of one embodiment of a detachment monitoring device according to the present invention;
FIG. 2 shows a schematic structural view of another embodiment of a detachment monitoring device according to the present invention;
FIG. 3 illustrates a flow diagram of one embodiment of a disassembly monitoring method according to the present invention;
fig. 4 shows a flow chart of another embodiment of the method according to the invention.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
FIG. 1 is a schematic structural diagram of one embodiment of a detachment monitoring device according to the present invention, including a determination module, a switch module, a processor, and a storage module; the judging module is used for judging the legality of disassembly; the switch module is used for sending an interrupt signal to the processor when illegal disassembly is monitored; the processor is used for recording illegal disassembly information after receiving the interrupt signal; the storage module is used for storing the illegal disassembly information.
In this embodiment, the determining module is further configured to: monitoring whether an authorization code is input; if the input authorization code is monitored, judging whether the input authorization code is correct or not; if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
In this embodiment, the protection device may further include a standby power supply, and the switch module includes a spring switch in contact with the protection case and is further configured to start the standby power supply to supply power when the protection case is illegally opened.
In this embodiment, the switch module is connected to an interrupt input pin of the processor, and is further configured to trigger a low level to generate an interrupt when the protection cover is illegally opened.
In this embodiment, the switch module is further configured to start the standby power supply to supply power when legal detachment is monitored, and send an interrupt signal to the processor; the processor is also used for recording legal disassembly information after receiving the interrupt signal; the storage module is also used for storing legal disassembly information.
Fig. 2 is a schematic structural diagram of another embodiment of the detachment monitoring device according to the present invention, which is an application of the present invention in a handheld electronic device, and includes a main power supply, a standby power supply, a processor, a storage module, a keyboard control module, a keyboard, an LCD screen, a switch module, and the like.
The standby power supply and the switch module are matched with all functional modules of the handheld electronic equipment to monitor whether the handheld electronic equipment is illegally detached or not through program judgment and read-write operation on the storage module.
The hardware structure design of the switch module is simple and flexible, and the switch module can be realized by a switch combination of a contact on-off switch. One side of the switch module is in contact with the equipment board-level protective shell through a contact type spring switch, the other side of the switch module is connected to an interrupt input pin of the processor, when the shell is forcibly detached, a connection path between the spring switch and the board-level protective shell is disconnected, the standby battery is started to supply power, the power supply part comprises the processor and the memory of the power supply part, and the processor and the memory can comprise part of functional units, so that the processor and the memory can ensure that the disconnection of a main power supply does not influence the triggering of interrupt, and the recording storage and other monitoring functions are realized. The standby battery needs to be started before the switch in the switch module is switched off so as to ensure the triggerability of interruption after the processor normally supplies power. The power supply protection device is based on the structural design of the switch module, the structural design of the switch module adopts a two-stage switch, the standby battery is preferentially triggered to supply power during illegal disassembly, and the power supply protection device can be realized by simple cascade disconnection of switch reeds. The standby power supply takes over the main power supply to fulfill certain power supply functions, and the switch inside the switch module is triggered to be grounded through the disconnection of the path, so that an interrupt pin of the processor is set to be low level, and interrupt is generated. Those skilled in the art will appreciate that known techniques, such as photosensors, etc., may also be used to cause the processor to generate interrupts. The processor records the disassembly information by judging the interrupt source and writes the disassembly information into the storage module. The disassembly information is a character specified artificially, and is stored in the memory after the system judges that the disassembly is illegal, such as: "this equipment was illegally disassembled for the time: 4/2010, 19/14. "
If the manufacturer or after-sales service personnel disassemble, the disassembly is legal, the manufacturer or after-sales service personnel need to input a unique disassembly authorization code (the disassembly authorization code is provided by an equipment supplier) through the keyboard control module and the keyboard, so that the keyboard input interruption is triggered, whether the authorization code is correct or not is judged in the keyboard input interruption program, and the program running in the processor plays a role of a judgment module. In another embodiment, the system can write legal disassembly information into the memory module according to the correctness of the authorization code without closing the disassembly monitoring function. Therefore, after the handheld electronic equipment is illegally detached by the user, once the handheld electronic equipment is damaged, after-sales service or manufacturers can not guarantee or be responsible for irreparable responsibility according to the illegal detaching information recorded in the storage module.
FIG. 3 shows a flow diagram of one embodiment of a disassembly monitoring method according to the present invention, comprising the steps of:
step 302: judging the validity of disassembly;
step 304: if illegal disassembly is monitored, sending an interrupt signal to the processor;
step 306: : the processor records illegal disassembly information;
step 308: the memory stores illegal disassembly information.
In this embodiment, step 302 specifically includes: monitoring whether an authorization code is input; if the input authorization code is monitored, judging whether the input authorization code is correct or not; if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
In this embodiment, the method may further include: if the switch module connected with the protective shell detects that the protective shell is illegally opened, the standby power supply is started to supply power. Step 304 is then implemented by sending a low signal to the interrupt pin of the processor to generate the interrupt.
In this embodiment, the method may further include: if legal disassembly is monitored, starting a standby power supply to supply power; sending an interrupt signal to a processor; the processor records legal disassembly information; the memory stores legal disassembly information.
Fig. 4 shows a flow chart of another embodiment of the method according to the invention, which is based on the structure of another embodiment of the device according to the invention, comprising the following steps:
step 402: powering on the handheld electronic equipment, and initializing a system;
step 404: interrupt INT1 (in this embodiment, interrupt INT1 is an interrupt source generated by the switch module) is enabled, and keyboard input interrupt INT2 is enabled;
step 406: executing the main program; go to step 408 and/or 410;
step 408: monitoring a keyboard input command, and after the system is initialized, monitoring the keyboard input command in a keyboard input interrupt INT2 triggering mode; if the correct command symbol (correct authorization code) is input, triggering keyboard input interruption, and entering a keyboard input interruption program in step 414; if no command symbol is input, go to step 410 to continue executing the program;
step 410: monitoring interruption INT1 triggered by illegal disassembly, wherein the illegal disassembly is that the disassembly is implemented under the condition that no authorization code is input or the authorization code is input incorrectly, a detacher cannot obtain legal authorization and carries out forced disassembly, a standby battery is started by a switch module, after power is supplied, the switch module is grounded, and an interruption input pin INT1 of a processor is set to be at a low level so as to trigger interruption INT 1; if the triggered INT1 goes to step 412, otherwise goes to step 424;
step 412: interrupt processing, writing into the memory module; after triggering INT1 interrupt, the INT1 interrupt program records relevant information such as illegal disassembly and disassembly time according to the detected input authorization code and current time, stores the information into a storage module, and then shifts to step 424;
step 414: comparing the authorization codes, judging whether the input authorization codes are correct, if so, turning to a step 418, otherwise, turning to a step 416;
step 416: the LCD displays error information to prompt the user to input the authorization code again, and the step 406 is carried out;
step 418: judging that the assembly is legal, switching off the interrupt INT1 by software, and not triggering the interrupt even if the interrupt input pin is set to be low level by the switch module; the interruption INT1 can be not closed, but legal disassembly information is recorded when the interruption is monitored;
step 420: LCD prompts legal disassembly;
step 422: the user carries out legal disassembly and writes legal disassembly information into the storage module;
step 424: continuing to execute the program;
step 426: the routine is ended.
If the equipment is damaged in the warranty period, after-sales personnel read information in a storage module in the electronic equipment by using special software so as to judge whether the equipment is illegally detached by a user; if the storage module reads the illegal disassembly information, a manufacturer or a supplier does not bear the quality problem caused by the illegal disassembly of non-professional personnel according to the equipment condition, so that the guarantee and quality guarantee responsibility is not carried; if the storage module does not store illegal disassembly information, the storage module can be maintained and replaced according to the quality guarantee period.
The automatic monitoring device and the method for preventing illegal disassembly according to the embodiment of the invention can be used for, but not limited to, handheld electronic equipment, have simple hardware structure and low cost, and are easy to realize in both hardware and software design. The manufacturer is favorable for the equipment to effectively prevent the user from illegally disassembling the equipment, is favorable for clearing responsibility and reasonably provides guarantee and quality guarantee service. In view of the simple hardware structure, flexible implementation, low cost and strong operability of the device, the device has general applicability to common handheld electronic devices.
The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A disassembly monitoring device is characterized by comprising a judging module, a switch module, a processor and a storage module; wherein,
the judgment module is used for judging the disassembly validity;
the switch module is used for sending an interrupt signal to the processor;
the processor is used for recording illegal disassembly information after receiving the interrupt signal;
the storage module is used for storing the illegal disassembly information.
2. The apparatus of claim 1, wherein the determining module is further configured to: monitoring whether an authorization code is input; if the input authorization code is monitored, judging whether the input authorization code is correct or not; if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
3. The apparatus of claim 1, further comprising a backup power source, the switch module including a spring switch in contact with the protective case and further configured to enable the backup power source to supply power when the protective case is unlawfully opened.
4. The apparatus of claim 1, wherein the switch module is coupled to an interrupt input pin of the processor and is further configured to trigger a low level to generate an interrupt when the protective case is illegally opened.
5. The apparatus of any of claims 1 to 4,
the switch module is also used for starting the standby power supply to supply power and sending an interrupt signal to the processor when legal disassembly is monitored;
the processor is also used for recording legal disassembly information after receiving the interrupt signal;
the storage module is also used for storing the legal disassembly information.
6. A disassembly monitoring method, comprising:
the judgment module judges the disassembly validity;
if the switch module connected with the protective shell monitors illegal disassembly, an interrupt signal is sent to the processor;
the processor records illegal disassembly information;
the memory stores illegal disassembly information.
7. The method of claim 6, wherein said determining the validity of the detachment comprises:
monitoring whether an authorization code is input;
if the input authorization code is monitored, judging whether the input authorization code is correct or not;
if the input authorization code is correct, judging that the disassembly is legal; and if the authorization code is not input or the input authorization code is wrong, judging that the assembly is illegally disassembled.
8. The method of claim 6, further comprising enabling a backup power supply if illegal opening of the protective case is detected by the switching module.
9. The method of claim 6, wherein said signaling an interrupt to a processor comprises:
the switch module sends a low level signal to an interrupt pin of the processor to generate an interrupt.
10. The method of any of claims 6 to 9, further comprising:
if the switch module monitors that the module is legally detached, the standby power supply is started to supply power;
the switch module sends an interrupt signal to the processor;
the processor records legal disassembly information;
the memory stores legal disassembly information.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010163656A CN101853347A (en) | 2010-04-27 | 2010-04-27 | Dismounting monitoring method and device |
| PCT/CN2010/077015 WO2011134225A1 (en) | 2010-04-27 | 2010-09-16 | Device and method for monitoring disassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010163656A CN101853347A (en) | 2010-04-27 | 2010-04-27 | Dismounting monitoring method and device |
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| CN101853347A true CN101853347A (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010163656A Pending CN101853347A (en) | 2010-04-27 | 2010-04-27 | Dismounting monitoring method and device |
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| CN (1) | CN101853347A (en) |
| WO (1) | WO2011134225A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103793314A (en) * | 2014-02-21 | 2014-05-14 | 济南思克测试技术有限公司 | Disassembling detecting and recording system |
| CN103902934A (en) * | 2012-12-26 | 2014-07-02 | 研祥智能科技股份有限公司 | Computer case disassembling prevention detecting method and device |
| CN103955653A (en) * | 2014-04-17 | 2014-07-30 | 福建鼎恩协创电子科技有限公司 | Anti-cracking security system, POS (Point Of Sale) machine and method |
| CN104092084A (en) * | 2014-08-07 | 2014-10-08 | 穆林冉 | Optical fiber laser device as well as self-protection device and self-protection method thereof |
| CN104101788A (en) * | 2013-04-08 | 2014-10-15 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
| CN105427401A (en) * | 2015-11-05 | 2016-03-23 | 山东超越数控电子有限公司 | Device and method for recording electronic device detachment information |
| CN107450701A (en) * | 2017-07-21 | 2017-12-08 | 广东欧珀移动通信有限公司 | Terminal device and its cell safety monitoring method, system |
| CN109150543A (en) * | 2018-08-20 | 2019-01-04 | 广东九联科技股份有限公司 | Law-enforcing recorder tears machine examination geodesic structure, internal data guard method and system open |
| CN109945911A (en) * | 2017-12-15 | 2019-06-28 | 富泰华工业（深圳）有限公司 | Electronic device tears machine monitoring device and method open |
| CN110823277A (en) * | 2018-08-07 | 2020-02-21 | 中惠创智无线供电技术有限公司 | Equipment anti-dismounting device and equipment with anti-dismounting function |
| CN111753341A (en) * | 2020-06-29 | 2020-10-09 | 广州邦讯信息系统有限公司 | Illegal disassembly detection method for Internet of things equipment |
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| CN103902934A (en) * | 2012-12-26 | 2014-07-02 | 研祥智能科技股份有限公司 | Computer case disassembling prevention detecting method and device |
| CN103902934B (en) * | 2012-12-26 | 2018-07-17 | 研祥智能科技股份有限公司 | A kind of cabinet tamper machine method for detecting and device |
| CN104101788A (en) * | 2013-04-08 | 2014-10-15 | 鸿富锦精密工业（深圳）有限公司 | Electronic device |
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| CN103793314A (en) * | 2014-02-21 | 2014-05-14 | 济南思克测试技术有限公司 | Disassembling detecting and recording system |
| CN103955653A (en) * | 2014-04-17 | 2014-07-30 | 福建鼎恩协创电子科技有限公司 | Anti-cracking security system, POS (Point Of Sale) machine and method |
| CN104092084A (en) * | 2014-08-07 | 2014-10-08 | 穆林冉 | Optical fiber laser device as well as self-protection device and self-protection method thereof |
| CN105427401A (en) * | 2015-11-05 | 2016-03-23 | 山东超越数控电子有限公司 | Device and method for recording electronic device detachment information |
| CN107450701B (en) * | 2017-07-21 | 2020-02-21 | Oppo广东移动通信有限公司 | Terminal equipment and battery safety monitoring method and system thereof |
| CN107450701A (en) * | 2017-07-21 | 2017-12-08 | 广东欧珀移动通信有限公司 | Terminal device and its cell safety monitoring method, system |
| US11681343B2 (en) | 2017-07-21 | 2023-06-20 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Terminal device and method and system for monitoring battery safety in terminal device |
| CN109945911A (en) * | 2017-12-15 | 2019-06-28 | 富泰华工业（深圳）有限公司 | Electronic device tears machine monitoring device and method open |
| CN110823277A (en) * | 2018-08-07 | 2020-02-21 | 中惠创智无线供电技术有限公司 | Equipment anti-dismounting device and equipment with anti-dismounting function |
| CN110823277B (en) * | 2018-08-07 | 2021-12-17 | 中惠创智（深圳）无线供电技术有限公司 | Equipment anti-dismounting device and equipment with anti-dismounting function |
| CN109150543A (en) * | 2018-08-20 | 2019-01-04 | 广东九联科技股份有限公司 | Law-enforcing recorder tears machine examination geodesic structure, internal data guard method and system open |
| CN109150543B (en) * | 2018-08-20 | 2024-09-06 | 广东九联科技股份有限公司 | Tear quick-witted detecting system open of law enforcement record appearance |
| CN111753341A (en) * | 2020-06-29 | 2020-10-09 | 广州邦讯信息系统有限公司 | Illegal disassembly detection method for Internet of things equipment |
| CN111753341B (en) * | 2020-06-29 | 2023-09-22 | 广州邦讯信息系统有限公司 | Illegal disassembly detection method for Internet of things equipment |
| CN113806164A (en) * | 2020-08-18 | 2021-12-17 | 荣耀终端有限公司 | Terminal dismantling monitoring method and device, terminal and storage medium |
| CN113806164B (en) * | 2020-08-18 | 2024-04-09 | 荣耀终端有限公司 | Monitoring method and device for terminal disassembly, terminal and storage medium |
| CN113178130A (en) * | 2021-03-24 | 2021-07-27 | 重庆惠科金渝光电科技有限公司 | Display device |
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| Publication number | Publication date |
|---|---|
| WO2011134225A1 (en) | 2011-11-03 |
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