CN105022972A - Memory device capable of remotely deleting data and use method thereof - Google Patents
Memory device capable of remotely deleting data and use method thereof Download PDFInfo
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- CN105022972A CN105022972A CN201510446200.4A CN201510446200A CN105022972A CN 105022972 A CN105022972 A CN 105022972A CN 201510446200 A CN201510446200 A CN 201510446200A CN 105022972 A CN105022972 A CN 105022972A
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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
- G06F21/88—Detecting or preventing theft or loss
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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
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/305—Authentication, i.e. establishing the identity or authorisation of security principals by remotely controlling device operation
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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
- G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F2221/2143—Clearing memory, e.g. to prevent the data from being stolen
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Abstract
The invention relates to a memory device capable of remotely deleting data and a use method thereof. The memory device is characterized in that the memory device comprises a control unit and an execution unit, wherein the control unit is a preset mobile phone which is communicated with the execution unit; the execution unit receives an instruction sent from the control unit and comprises a double-serial-port single chip microcomputer, a GSM (Global System for Mobile Communications) module, a GPS (Global Positioning System) module, a USB (Universal Serial Bus) reading and writing module, memory equipment, an EEPROM (Electrically Erasable Programmable Read-Only Memory), a lithium battery, a coded lock and a triple gate circuit, wherein the double-serial-port single chip microcomputer serves as a central processing chip to communicate with the GSM module through a first serial port; the double-serial-port single chip microcomputer is connected with the GPS module through a second serial port; the double-serial-port single chip microcomputer is connected with one end of the USB reading and writing module through a parallel port; the other end of the USB reading and writing module is connected with the memory equipment; the double-serial-port single chip microcomputer is connected with the EEPROM through an I2C (Inter-Integrated Circuit) bus; the double-serial-port single chip microcomputer is connected with the lithium battery through A/D conversion; and the lithium battery supplies power to the whole execution unit.
Description
Technical field
The present invention relates to a kind of can the memory storage of long-range deletion data and using method thereof.
Background technology
Along with the development of science and technology, movable storage device, especially USB storage device is because its volume is little, memory space is large, the advantage such as to be easy to carry has become the main tool that people store information, but the thing followed is safety problem, and the problem that memory device all can be had all the time to lose occurs.
Though nowadays have many methods to ensure the safety of memory device, such as cryptographic technique carries out software cryptography to memory device; Or utilize environment perception technology, make memory device run in certain circumstances or destroy; Encryption technology, access control technology combine by the people such as Peng Dong in " research and implementation of movable storage device safety management technology ", prevent USB flash disk information leakage, but can not give USB flash disk for change.These class methods have certain limitation, have encryption just to have deciphering, and the method for only encrypting can not ensure the safety of memory device; Environment perception technology is then subject to the restriction of position, only just can use memory device in specific position, makes the use of memory device have significant limitation.
Want fundamentally to solve memory device to lose and information security issue, only by antitheft, or to carry out software cryptography to equipment be inadequate, must provide the strategy given for change when ensureing data security.
Summary of the invention
For the deficiencies in the prior art, the technical matters that quasi-solution of the present invention is determined is, provide a kind of can the memory storage of long-range deletion data and using method thereof.This memory storage lose or stolen time carry out long range positioning and manipulation, can give or track this device for change, and the information of memory storage can be deleted when giving for change, prevent from leaking, the safety of guarantee information.The method assigns instruction by pre-set mobile phone by the long-range performance element to memory storage of operational order, and this memory storage also performs different operations under specific circumstances by different instruction determination status, the possibility that the equipment of improving is given for change, and can when giving for change to memory device locking or deleted file, method is flexible, has effectively ensured the safety of memory device and information.
The present invention solves the technical scheme that described memory storage technical matters adopts, there is provided a kind of can the memory storage of long-range deletion data, it is characterized in that this memory storage comprises manipulation unit and performance element, described manipulation unit be preset carry out with performance element the mobile phone that communicates, performance element receives the instruction that manipulation unit sends; Described performance element comprises dual-serial-port single-chip, gsm module, GPS module, USB module for reading and writing, memory device, EEPROM, lithium battery, coded lock and tri-state gate circuit; Described dual-serial-port single-chip is communicated with gsm module by first serial as central processing element, dual-serial-port single-chip is connected with GPS module by second serial, dual-serial-port single-chip is connected with USB module for reading and writing one end by parallel port, and the other end of USB module for reading and writing is connected with memory device; Dual-serial-port single-chip is connected with EEPROM by I2C bus, and dual-serial-port single-chip is connected with lithium battery by A/D conversion, and lithium battery is that whole performance element is powered; Dual-serial-port single-chip is connected by corresponding I/O interface to coded lock and tri-state gate circuit respectively, memory device through tri-state gate circuit export USB interface, be connected with outer computer by this USB interface, lithium battery to be connected with external power supply by the VCC line of this USB interface and to charge.
The present invention solves the technical scheme that described method and technology problem adopts, provide a kind of above-mentioned can the using method of memory storage of long-range deletion data, the concrete steps of the method are:
(1) when normal use memory device, without the need to using any remote functionality, safeguard measure instruction can be closed by manipulation unit to performance element transmission, performance element being closed, facilitates the use of memory device user to greatest extent;
(2) when memory device is lost, manipulation unit first sends to performance element and opens defencive function instruction, then sends the instruction of locking memory device, prevents other people from using outer computer to read the data of this memory device; And by the instruction of inquiry gps data, mobile alignment and the current location information of this memory device can be obtained, the possibility that increase equipment is given for change; By instructions query electric quantity of lithium battery, when still giving for change after memory device acquisition GPS information or electricity is too low, by the instruction of format storage device data, prevent data stolen; When memory device inserts outer computer during losing, perform memory device and to power on automatic reaction process; Manipulation unit can send instruction and select whether open inform by short message simultaneously, selects when memory device powers at every turn, whether sends note and reports this time reading to the mobile phone reminding of specifying.
Compared with prior art, the invention has the beneficial effects as follows:
1, the long range positioning based on GPS module manipulates, and stablizes easy.When memory device is lost, memory device is positioned.
2, user can be controlled memory device by gsm module at any time and obtain the positional information of memory device, realizes, when memory device is lost, can giving for change, and can delete the data in memory device at any time, and then effectively prevent data stolen.
2, control tri-state gate circuit by dual-serial-port single-chip, can memory device be locked, any computing machine or other platforms cannot be set up with this memory device and communicate and read storing device information, effectively ensured the safety of memory device internal information.
3, the gsm module of performance element is after receiving note, the interference of automatic other SMS of filtering.Dual-serial-port single-chip can adjust different measures in different situations, ensures storing device information safety, also can guarantee information can not reveal when giving for change, and Measures compare is flexible, and degree of safety is higher.
Accompanying drawing explanation
Fig. 1 is that the present invention can the structured flowchart of a kind of embodiment of memory storage of long-range deletion data;
Fig. 2 is that the present invention can the manipulation instruction flow chart of manipulation unit of memory storage of long-range deletion data;
Fig. 3 be the present invention can long-range deletion data memory storage using method in memory device to power on automatic reacting flow chart;
In figure, 1. performance element, 101.GSM module, 102. dual-serial-port single-chip, 103. coded locks, 104.USB module for reading and writing, 105.EEPROM (band EEPROM (Electrically Erasable Programmable Read Only Memo)), 106. tri-state gate circuits, 107.GPS module, 108. lithium batteries, 109. memory devices, 2. manipulation unit, 3. outer computer.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated, but not in this, as the restriction to the claims in the present invention protection domain.
Embodiment illustrated in fig. 1ly to show, in Fig. 1 in dotted line frame for the present invention can the memory storage (abbreviation memory storage) of long-range deletion data, comprise manipulation unit 2 and performance element 1, described manipulation unit 2 carries out with performance element 1 mobile phone that communicates for what preset, and performance element 1 receives the instruction that manipulation unit 2 sends; Described performance element 1 comprises dual-serial-port single-chip 102, gsm module 101, GPS module 107, USB module for reading and writing 104, memory device 109, EEPROM (band EEPROM (Electrically Erasable Programmable Read Only Memo)) 105, lithium battery 108, coded lock 103 and tri-state gate circuit 106; Described dual-serial-port single-chip 102 is communicated with gsm module 101 by first serial as central processing element, dual-serial-port single-chip 102 is connected with GPS module 107 by second serial, obtain the information of GPS module, dual-serial-port single-chip 102 is connected with USB module for reading and writing 104 one end by parallel port, and the other end of USB module for reading and writing 104 is connected with memory device 109; Dual-serial-port single-chip 102 is connected with EEPROM 105 by I2C bus, and dual-serial-port single-chip 102 is connected with lithium battery 108 by A/D conversion, the dump energy of monitoring lithium battery 108, and lithium battery 108 is powered for whole performance element; Dual-serial-port single-chip 102 is connected by corresponding I/O interface to coded lock 103 and tri-state gate circuit 106 respectively, memory device 109 exports USB interface through tri-state gate circuit 106, be connected with outer computer 3 by this USB interface, lithium battery 108 to be connected with external power supply by the VCC line of this USB interface and to charge.
Memory device 109 exports USB interface through tri-state gate circuit 106, be connected with outer computer 3 by this USB interface, memory device 109 is communicated with outer computer 3 by differential signal by USB interface, well known, USB interface is by positive source (VCC) line, negative voltage data line (Digital Minus, be called for short DM), positive voltage data line (DigitalPositive, be called for short DP) and ground wire (GND) four wire compositions, Digital Positive and Digital Minus is used to transmit data, when USB interface inserts computing machine, computing machine to be powered to memory device by VCC port and is read the information on this memory device by DM and DP port.
The present invention is at the DM of existing USB interface, tri-state gate circuit 106 is introduced in DP, namely the negative voltage data line DM in USB interface and being connected with tri-state gate circuit respectively between positive voltage data line DP, the negative voltage data line DM of memory device and positive voltage data line DP accesses the negative voltage data line DM after tri-state gate circuit and positive voltage data line DP again in conjunction with original positive source (VCC) line and ground wire (GND), the USB interface of the whole memory storage of common formation, positive source (VCC) line is connected with lithium battery 108 simultaneously, when accessing outer computer, this USB interface is the interface that whole memory storage carries out correspondence with foreign country and charging.This tri-state gate circuit is by the I/O Interface Controller of single-chip microcomputer 102, can the Enable Pin of anergy tri-state gate circuit by single-chip microcomputer, tristate logic (TSL) out gate is made to be in elicit illness state-high-impedance state, now output terminal is equivalent to unsettled, thus control store equipment 109 cannot be set up with outer computer 3 and communicates, memory device is in the lock state, but now single-chip microcomputer can be operated by USB module for reading and writing 104 pairs of memory devices 109; And memory device is when being in unlock state, the Enable Pin of the enable triple gate of single-chip microcomputer, memory device 109 and outer computer 3 can proper communications, if now single-chip microcomputer 102 need operate memory device 109, need anergy tri-state gate circuit, the communication between locking memory device 109 and outer computer 3; Namely memory device is connected with outer computer through tri-state gate circuit by USB interface, and when outer computer operates memory device, USB module for reading and writing does not do any operation.When single-chip microcomputer need operate memory device, disconnect the connection between memory device and outer computer by tri-state gate circuit.
The dual-serial-port single-chip 102 adopted in memory storage of the present invention, gsm module 101, GPS module 107, USB module for reading and writing 104, memory device 109, EEPROM 105, lithium battery 108 and coded lock 103 are known technology.
The present invention can the concrete steps of using method of memory storage of long-range deletion data be:
(1) when normal use memory device, without the need to using any remote functionality, safeguard measure instruction can be closed by manipulation unit 2 to performance element 1 transmission, performance element 1 being closed, facilitates the use of memory device user to greatest extent;
(2) when memory device is lost, manipulation unit 2 first sends to performance element 1 and opens defencive function instruction, send the instruction of locking memory device again, prevent other people from using outer computer 3 to read the data of this memory device 109, and can by the instruction of inquiry gps data, obtain mobile alignment and the current location information of this memory device, the possibility that increase equipment is given for change; By instructions query electric quantity of lithium battery, when still giving for change after memory device acquisition GPS information or electricity is too low, by the instruction of format storage device data, prevent data stolen; When memory device inserts outer computer during losing, perform memory device to power on automatic reaction process, manipulation unit can send instruction and select whether open inform by short message simultaneously, selects when memory device powers at every turn, whether sends note and reports this time reading to the mobile phone reminding of specifying.
Arranging of the various parameter of performance element 1 can write dual-serial-port single-chip 102 in advance by computer platform, also can be changed by manipulation unit 2 in the later stage, performance element 1 needs to set the instruction whether receiving only special handset before use, the instruction of special handset is only accepted if be set as, then need to set the mobile phone communicated with, also can set multiple phone number, and can be undertaken adding or deleting by manipulation unit 2 in the later stage.The mobile phone of manipulation unit 2 for presetting in the present invention, this mobile phone can be usual the used mobile phone of user, without the need to other purchase.When GPS module 107 receives SMS, cellphone information is filtered by single-chip microcomputer 102, no matter correctness is all left in the basket the short message content that other numbers send except pre-set cellphone information, only have when pre-set phone number have sent discernible instruction, performance element 1 just can perform corresponding operation, and various instruction is stored in EEPROM 105, after lithium battery 108 electricity exhausts, still can effectively preserve data and setting like this.
Dual-serial-port single-chip 102 monitors the duty of gsm module 101, GPS module 107, memory device 109, the electricity residue monitoring lithium battery 108 is changed by A/D, detected the no access outer computer 3 of VCC port voltage determination memory device 109 of USB interface by dual-serial-port single-chip 102, dual-serial-port single-chip 102 by EEPROM 105 periodically record from GPS module 107 obtain gps data and the time and by single-chip microcomputer write EEPROM 105; When dual-serial-port single-chip 102 judges without gps signal, stop upgrading gps data, lithium battery 108 is connected with external power supply by USB interface, the VCC line of USB interface is that lithium battery 108 charges, whole performance element 1 is powered by lithium battery 108, when USB interface is connected with outer computer 3, performance element 1 stops being powered by lithium battery 108, turns and is powered by the USB interface VCC power lead of outer computer 3.
Described dual-serial-port single-chip 102 is as central processing element, and its task is monitoring and controls modules, receives the manipulation instruction that sends of unit 2 or to manipulation unit 2 feedback operation state by gsm module 101 with short message mode; Obtain the longitude and latitude of memory device 109 and temporal information by GPS module 101 thus determine current storage devices 109 present position; Read-write operation is carried out by USB module for reading and writing 104 pairs of memory devices 109, by the voltage of A/D conversion monitoring lithium battery 108, store gps data that performance element gets and performance element state (example: whether defencive function is opened, whether memory device lock) by EEPROM 105, can data be preserved under power-down conditions; Realize locking memory device by I/O Interface Controller tri-state gate circuit, determine whether memory device is read by external device by monitoring memory device electrifying condition (i.e. the VCC line voltage of USB interface); Also each submodule can optionally be closed in varied situations.
Gsm module receives the short-message instruction manipulating unit and send by note, can set whether special handset just can manipulate performance element in advance by the single-chip microcomputer of computing machine to performance element, also can add/delete/change the mobile phone that can manipulate performance element.Gsm module 101 receives the short-message instruction that after information, first filtering is invalid, and effective instruction is passed to dual-serial-port single-chip 102.Dual-serial-port single-chip 102 is according to the information adjustment performance element status received or performance element status is fed back to manipulation unit.
Manipulation unit 2 can change the various important parameters of performance element by specific note, use during this mobile phone mistakenly send text message for preventing other people, except carrying out except requirement to messaging format, need add specific character string and just can be performed unit 1 and identify before note.
GPS module 107 in the open time data passed to dual-serial-port single-chip with some cycles store by satnav determination equipment current time, longitude and latitude and height above sea level, single-chip microcomputer 102 records the location and time information of memory device and the presence or absence of moment detection gps signal, when being in the environment not having gps signal, single-chip microcomputer stops more new data.
If memory device powers on when not having GSM signal, activating pin lock, need Password Input be carried out, input password repeatedly mistake enter lock-out state can only by manipulation unit 2 unlock.
USB module for reading and writing 104 receives the instruction of dual-serial-port single-chip 102 pairs of memory devices 109 and carries out corresponding operation to memory device, when dual-serial-port single-chip 102 receives the appointed information that user sends, and the data of format memory device 109 li.
Tri-state gate circuit 106, when specific manipulation instruction or coded lock input error, by dual-serial-port single-chip 102 by I/O Interface Controller tri-state gate circuit, and then realizes controlling the USB interface of locking between this memory device and computing machine.
Embodiment illustrated in fig. 2ly to show, the present invention can manipulate the various instructions that unit 2 pairs of performance elements 1 send in the memory storage of long-range deletion data, comprises after the setting to performance element running parameter and the inquiry to storage device status and performance element receive by gsm module 101 instruction that manipulation unit 2 sends and to decode made corresponding reactiveness and the feedback to manipulation unit 2 through single-chip microcomputer 102.
The manipulation instruction that manipulation unit 2 can send comprises: instruction A1, closes/open defencive function; Instruction A2, locking/unlocking memory device; Instruction A3, On/Off inform by short message; Instruction A4, deletes data, namely formats memory device 109; Instruction A5, inquiry lithium battery 108 electricity; Instruction A6, inquiry gps data; Instruction A7, change coded lock.
Receive instruction A1, performance element On/Off defencive function.
Receive instruction A2, the single-chip microcomputer locking/unlocking memory device of performance element.
Receive instruction A3, the Single-chip Controlling gsm module of performance element is opened or is closed inform by short message.
Receive instruction A4, the single-chip microcomputer of performance element perform deletion (format) storage device data and by delete successfully or failed result feedback give manipulation unit.
Receive instruction A5, lithium battery dump energy is fed back to manipulation unit by note form by the single-chip microcomputer of performance element.
Receive instruction A6, store in EEPROM 12 groups of gps datas are fed back to manipulation unit by the single-chip microcomputer of performance element.
Receive instruction A7, the Single-chip Controlling coded lock of performance element, amended new password is also fed back to manipulation unit by the password that Modify password is locked.
Embodiment illustrated in fig. 3ly to show, the present invention can long-range deletion data memory storage using method in the memory device automatic reaction process that powers on be:
(1) whenever by three state circuit 106, dual-serial-port single-chip detects that the VCC line of memory device 109 is high voltage, illustrate that memory device 109 and outer computer 3 connect, namely memory device 109 powers on,
(2) performance element detects whether open defencive function after step (1) detects that memory device powers on, performance element detects whether open defencive function, if do not open defencive function, then performance element does not do any reaction, memory device reads successfully, enters step (5); If open defencive function, then enter step (3);
(3) detect and whether there is GSM signal and detect through step (2) and open defencive function, detect whether there is GSM signal by gsm module 101 again, when there is not GSM signal, gsm module 101 cannot run, then coded lock 103 is opened, require that user inputs password, judge that whether password that user inputs is correct, if the number of times of input error password exceedes limited number of times, password is still incorrect, then automatically lock memory device 109, enter step (5); If input proper password in predetermined number of times, then read successfully; When there is GSM signal, enter step (4);
(4) whether detection memory device is in the lock state and determines to there is GSM signal through step (3), now detect memory device 109 whether to be locked, if dual-serial-port single-chip 102 receives the short message that gsm module 101 locks memory device, then lock memory device, this memory device cannot read, and enter step (5); If dual-serial-port single-chip 102 did not receive the short message of locking memory device, then memory device 109 read successfully;
(5) whether open inform by short message single-chip microcomputer 102 and detect whether open inform by short message, if do not open inform by short message, then whole EOP (end of program); If unlatching inform by short message, read successfully at each memory device or after failure, send note by gsm module 101 to manipulation unit 2, report the result this time read, whole EOP (end of program).
When lithium battery 108 electricity is too low, gsm module 101 sends inform by short message electric quantity of lithium battery from trend manipulation unit.
When memory device 109 enters lock-out state in any way, only have manipulation unit 2 can unlocker device.
After dual-serial-port single-chip 102 receives deletion data processing instructions, delete the data in memory device 109 immediately, this instruction cannot be cancelled.
Memory device in the present invention is not limited to USB storage device, also can be the memory device of other types, can realize long range positioning and long-range deletion data equally, pass in and out corresponding process in time when memory device is lost.
The present invention does not address part and is applicable to prior art.
Claims (3)
1. can the memory storages of long-range deletion data, it is characterized in that this memory storage comprises manipulation unit and performance element, described manipulation unit be preset carry out with performance element the mobile phone that communicates, performance element receives the instruction that manipulation unit sends; Described performance element comprises dual-serial-port single-chip, gsm module, GPS module, USB module for reading and writing, memory device, EEPROM, lithium battery, coded lock and tri-state gate circuit; Described dual-serial-port single-chip is communicated with gsm module by first serial as central processing element, dual-serial-port single-chip is connected with GPS module by second serial, dual-serial-port single-chip is connected with USB module for reading and writing one end by parallel port, and the other end of USB module for reading and writing is connected with memory device; Dual-serial-port single-chip is connected with EEPROM by I2C bus, and dual-serial-port single-chip is connected with lithium battery by A/D conversion, and lithium battery is that whole performance element is powered; Dual-serial-port single-chip is connected by corresponding I/O interface to coded lock and tri-state gate circuit respectively, memory device through tri-state gate circuit export USB interface, be connected with outer computer by this USB interface, lithium battery to be connected with external power supply by the VCC line of this USB interface and to charge.
2. according to claim 1 can the using method of memory storage of long-range deletion data, the concrete steps of the method are:
(1) when normal use memory device, without the need to using any remote functionality, safeguard measure instruction can be closed by manipulation unit to performance element transmission, performance element being closed, facilitates the use of memory device user to greatest extent;
(2) when memory device is lost, manipulation unit first sends to performance element and opens defencive function instruction, then sends the instruction of locking memory device, prevents other people from using outer computer to read the data of this memory device; And by the instruction of inquiry gps data, mobile alignment and the current location information of this memory device can be obtained, the possibility that increase equipment is given for change; By instructions query electric quantity of lithium battery, when still giving for change after memory device acquisition GPS information or electricity is too low, by the instruction of format storage device data, prevent data stolen; When memory device inserts outer computer during losing, perform memory device and to power on automatic reaction process; Manipulation unit can send instruction and select whether open inform by short message simultaneously, selects when memory device powers at every turn, whether sends note and reports this time reading to the mobile phone reminding of specifying.
3. according to claim 2 can the using method of memory storage of long-range deletion data, it is characterized in that the power on concrete steps of automatic reaction process of described memory device are:
(1) when dual-serial-port single-chip is high voltage by three state electric circuit inspection to the VCC line of memory device, illustrate that memory device and outer computer connect, namely memory device powers on,
(2) performance element detects whether open defencive function after step (1) detects that memory device powers on, performance element detects whether open defencive function, if do not open defencive function, then performance element does not do any reaction, memory device reads successfully, enters step (5); If open defencive function, then enter step (3);
(3) detect and whether there is GSM signal and detect through step (2) and open defencive function, detect whether there is GSM signal by gsm module again, when there is not GSM signal, gsm module cannot run, then coded lock is opened, require that user inputs password, judge that whether password that user inputs is correct, if the number of times of input error password exceedes limited number of times, password is still incorrect, then automatically lock memory device, enter step (5); If input proper password in predetermined number of times, then read successfully; When there is GSM signal, enter step (4);
(4) whether detection memory device is in the lock state and determines to there is GSM signal through step (3), now detect memory device whether to be locked, if dual-serial-port single-chip receives the short message of gsm module locking memory device, then lock memory device, this memory device cannot read, and enter step (5); If dual-serial-port single-chip did not receive the short message of locking memory device, then memory device read successfully;
(5) whether open inform by short message microprocessor detect and whether open inform by short message, if do not open inform by short message, then whole EOP (end of program); If unlatching inform by short message, read successfully at each memory device or after failure, send note by gsm module to manipulation unit, report the result this time read, whole EOP (end of program).
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| CN106331069A (en) * | 2016-08-16 | 2017-01-11 | 瓦戈科技（上海）有限公司 | Method for remotely deleting data through cloud |
| CN106598491A (en) * | 2016-11-29 | 2017-04-26 | 新华三技术有限公司 | Data processing method and device |
| CN106599642A (en) * | 2016-12-19 | 2017-04-26 | 广东小天才科技有限公司 | Information leakage prevention method and electronic terminal |
| CN111062062A (en) * | 2019-11-19 | 2020-04-24 | 安徽机电职业技术学院 | Mobile storage device with positioning and remote data processing functions |
| CN111859473A (en) * | 2020-07-28 | 2020-10-30 | 北京中科麒麟信息工程有限责任公司 | External terminal protection equipment and protection system based on space detection |
| CN114721593A (en) * | 2022-03-18 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Storage device information collection method and system and electronic device |
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