CN201812500U - Removable storage device - Google Patents
Removable storage device Download PDFInfo
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- CN201812500U CN201812500U CN2010205647621U CN201020564762U CN201812500U CN 201812500 U CN201812500 U CN 201812500U CN 2010205647621 U CN2010205647621 U CN 2010205647621U CN 201020564762 U CN201020564762 U CN 201020564762U CN 201812500 U CN201812500 U CN 201812500U
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- storage device
- control chip
- storer
- movable storage
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Abstract
The utility model relates to a removable storage device, comprising an interface module, a storage, a clock circuit, a main control chip, a power supply and a sensor, wherein the interface module is respectively connected with the storage and the main control chip; the main control chip is respectively connected with the storage, the clock circuit, the power supply and the sensor; and the clock circuit is respectively connected with the interface module and the storage. The sensor sends trigger signals to the main control chip; the main control chip receives the trigger signals, and sends erase instructions and write instructions to the storage; the storage receives the erase instructions and the write instructions, all the addresses in all the block logic areas in the storage are erased, and all the addresses in the storage are written in a random number. Therefore, in the removable storage device, the main control chip is triggered to automatically destruct data in the storage; besides, the utility model has the advantages of simple structure, high safety and reliability, and repeated use, the problem of data leak, which is caused by accident factors, can be effectively solved, and the risk of the data leak is reduced.
Description
Technical field
The utility model relates to a kind of movable storage device, relates in particular to a kind of movable storage device with data auto-destruct function.
Background technology
Along with development of times, informationalized step arrives, the use amount of movable storage device (for example USB flash disk) is increasing, but problem has occurred, because the data of storing in the movable storage device under some situation are needs to be keep secret, if lose accidentally, the situation of leakage of data may appear.The Brute Force that may run into for example, perhaps the USB flash disk internal information is by illegal unauthorized copying copy, and these risks all are unavoidable.Require very high user for security and confidentiality, leaking of confidential data more can bring immeasurable loss.
Existing movable storage device, for example the USB flash disk structure mainly is made of main control chip, interface module, memory module, if wish the data in the USB flash disk are carried out associative operation, must depend on the interface of USB flash disk and outer computer, and USB flash disk itself can't be realized data auto-destruct function.
Again for example, the data confidentiality of existing USB flash disk all is to utilize USB flash disk to design aspect access authentication, data encryption protection, but, for USB flash disk out of control after then safety problem can't solve, do not have a kind ofly can not carry out the movable storage device that data file is destroyed by own resource by equipment such as outer computers.
The utility model content
The purpose of this utility model is at the defective of existing movable storage device, and a kind of movable storage device is provided, and not only has reading and writing data and memory function, and under specific circumstances with the data auto-destruct of being stored, to realize data security to greatest extent.
For achieving the above object, the utility model provides a kind of movable storage device, and described movable storage device comprises: interface module, storer, clock circuit, main control chip, power supply and sensor;
Described interface module is connected with main control chip with described storer respectively, and described main control chip is connected with described storer, clock circuit, power supply and sensor respectively, and described clock circuit is connected with storer with described interface module respectively;
Described sensor sends to described main control chip with trigger pip; Described main control chip receives described trigger pip, sends erasing instruction and writes instruction to described storer; Described storer receives described erasing instruction and writes instruction and all addresses in all the piece logic areas in the described storer wiped and all addresses in the described storer are write random number.
Described movable storage device also comprises timer, is connected with described sensor.Power supply is connected with described main control chip.Described power supply is a lithium battery.Described storer is specially: flash memory, safe digital storage card, high-capacity secure digital memory card, multimedia card, standard flash memory card, memory stick, transmission flash card, extreme digital card, smart media card or solid state hard disc.
Therefore, movable storage device of the present utility model can utilize the sensor-triggered main control chip with the data auto-destruct in the storer, and it is simple in structure, safe and reliable, can effectively solve the leakage of data problem that causes because of unexpected factor, reduce the leakage of data risk.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model movable storage device.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Movable storage device of the present utility model, not only can realize that existing movable storage device is for functions such as data storage, read-write and encrypting and authenticatings, and can be when particular case occurring the data of own storage inside be all moved destruction, thereby realize data security to greatest extent.
Fig. 1 is the synoptic diagram of the utility model movable storage device, and as shown in the figure, movable storage device of the present utility model comprises: interface module 1, storer 2, clock circuit 3, main control chip 4 and sensor 5.
Utilize interface module 1, clock circuit 3 and main control module 4 can realize the function of all data storage, read-write, encryption and the authentication of existing movable storage device.
Again as shown in Figure 1, movable storage device of the present utility model also comprises power supply 6, is connected with main control chip 4, is the main control chip power supply separately; Timer 7 is connected with sensor 5.
When external cause satisfies the data self-destruction condition of the utility model movable storage device, sensor 5 can produce a trigger pip and give main control chip 4, but the measured information that sensor 2 perception come from the outside, when timer 7 starts, external USB power cut-off or power up triggering, temperature triggered, gravity resistance, pressure resistance, radio-frequency (RF) identification (Radio Frequency Identification, RFID) etc. under the triggering of sensor, send trigger pip to main control chip 4.Sent erasing instruction and write instruction to storer 2 by main control chip 4, storer 2 receives erasing instruction and writes instruction and all addresses in all the piece logic areas in the storer 2 wiped and all addresses in the described storer are write random number.
During concrete work, the trigger pip that main control chip sends according to sensor is carried out the self-destruction operation, and main control chip can force switchable memory to write the chip controls logic, carries out following processing:
Step 101 starts the Flash piece erasing instruction in the storer, and all piece logic areas are carried out the piece erase operation of full 0XFF or full 0X00, is wiped free of up to whole Flash address to finish;
Step 102 starts the Flash piece and writes logic, at 12M or more under the support of high primary frequency 480M clock, with set read-write (WR),, insert the random number signal at data D0-D8 in Flash initial address assignment, beginning write operation repeatedly is up to the address area of finishing whole Flash chips.
It should be noted that and before power supply exhausts, repeat to begin to write random number, stop the residual monitored possibility of electric charge in the storage unit from the Flash start address if degree of depth self-destruction then needs execution in step 103.
Therefore data auto-destruct ultimate principle of the present utility model is the storage principle according to Flash, and it is infeasible according to present technological means that dependence comes recovery of stored data to dielectric electric charge residue detection.
Triggering sensor, to produce the reason of trigger pip a lot, for example following but be not limited to the appearance of following situation:
1, illegally inserted peripheral hardwares such as computing machine when movable storage device of the present utility model, when attempting to carry out reading and writing data, this type of situation can trigger (being the device authentication function) by the bound device ID condition of carrying out, when being made as nonpermissive connection device outside computing machine that is inserted etc., main control chip is illegal equipment by checkout equipment ID, promptly send command-destruct, begin to carry out the self-destruction operation.
2, be set under the situation about only reading once when the data in the movable storage device of the present utility model, halfway in the transport process during the unauthorized read-write of mandatory, can realize that self-destruction triggers by encrypting and authenticating function or oxygen sensor in light of the circumstances, when main control chip detects when being input as invalid password, fingerprint or oxygen sensor and sending trigger pip, promptly send command-destruct, begin to carry out the self-destruction operation.
3, the data in movable storage device of the present utility model have exceeded the access time threshold values of regulation, and for example file is written into after 4 hours auto-destruct; This type of situation is carried out self-destruction by the setting of timer and is triggered, and when the time reached the timer preset parameter, main control chip promptly sent command-destruct, begins to carry out the self-destruction operation.
4, when the peripheral hardware that is associated in the movable storage device of the present utility model computing machine or other read-write equipments are out of control, destroy or that abnormal power-down etc. takes place is urgent constantly time for example, this type of situation can be carried out sensing by technology such as gravity resistance, acceleration detection, interface voltage change-detection and be triggered, and finishes the self-destruction operation by main control chip control.
5, when movable storage device of the present utility model and particular kind of relationship people's physical distance surpasses the requirement (for example 10 meters) of regulation, this type of situation is carried out self-destruction by the RFID technology and is triggered, when physical distance surpasses predetermined distance parameter, main control chip promptly sends command-destruct, begins to carry out the self-destruction operation.
Existing movable storage device is not possess data auto-destruct function, but finishes reading and writing of data by storer and interface module.The characteristic of flash card is non-volatile simultaneously, so the data of existing movable storage device eliminate be by the computing machine USB interface to USB flash disk format, operation such as deletion, this operation relies on the file operation function of computer operating system, deletion is deleted or be denoted as to file chained list in the movable storage device, can not carry out data dump usually the physical memory regions of movable storage device.So depend on external computer system or file system, depending on USB interface must power.This generic operation mainly externally interface finish.
Movable storage device of the present utility model can pass through the automatic triggering for generating self-destruction of main control chip random number, the control flash memory carries out the autonomous block write operation, and by main control chip and sensor realization triggering self-destruction logic control automatically, having is exactly by the built-in power powered operation again, does not need by equipment such as outer computers.
Therefore movable storage device of the present utility model not only can be realized the general utility functions of existing movable storage device, for example password authentication/finger print identifying, file encryption, data self-destroying function, and can guarantee that the data file of storing only can be read and write by legal people on the computing machine of authorizing in the time of authorizing.So movable storage device of the present utility model is simple in structure, safe and reliable, use repeatedly, can effectively solve because of unexpected factor (as lose, stolen, illegally read, unauthorized copying copy, Brute Force) the leakage of data problem that causes, reduce the leakage of data risk.
Movable storage device of the present utility model can be applicable to a lot of occasions.For example, can be used as the parameter medium etc. in official document office, ciphertext distribution carrier, airplane data storage, radio station.Also can be applicable to and want field of traffic, thereby prevent the reading of data that has the transit staff unauthorized midway, and during meeting, can regularly destroy function, avoid the processing of past-session documentation and cleaning etc.
And movable storage device of the present utility model can be presented as various devices, if having memory function movable storage device can, such as but not limited to USB flash disk, mobile phone and digital camera etc.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is an embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. a movable storage device is characterized in that described movable storage device comprises: interface module, storer, clock circuit, main control chip, power supply and sensor;
Described interface module is connected with main control chip with described storer respectively, and described main control chip is connected with described storer, clock circuit, power supply and sensor respectively, and described clock circuit is connected with storer with described interface module respectively;
Described sensor sends to described main control chip with trigger pip; Described main control chip receives described trigger pip, sends erasing instruction and writes instruction to described storer; Described storer receives described erasing instruction and writes instruction and all addresses in all the piece logic areas in the described storer wiped and all addresses in the described storer are write random number.
2. movable storage device according to claim 1 is characterized in that described movable storage device also comprises timer, is connected with described sensor.
3. movable storage device according to claim 1 is characterized in that described power supply is a lithium battery.
4. movable storage device according to claim 1 is characterized in that described storer is specially: flash memory, safe digital storage card, high-capacity secure digital memory card, multimedia card, standard flash memory card, memory stick, transmission flash card, extreme digital card, smart media card or solid state hard disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205647621U CN201812500U (en) | 2010-10-18 | 2010-10-18 | Removable storage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205647621U CN201812500U (en) | 2010-10-18 | 2010-10-18 | Removable storage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201812500U true CN201812500U (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205647621U Expired - Fee Related CN201812500U (en) | 2010-10-18 | 2010-10-18 | Removable storage device |
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| Country | Link |
|---|---|
| CN (1) | CN201812500U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390125A (en) * | 2013-07-19 | 2013-11-13 | 丁贤根 | Design method for safe and mobile storage controller authorized and encrypted/decrypted by wireless terminal |
| CN103778959A (en) * | 2012-10-23 | 2014-05-07 | 三星电子株式会社 | Data storage device, controller, and operating method of data storage device |
| CN105151526A (en) * | 2015-07-31 | 2015-12-16 | 武汉家事易农业科技有限公司 | Food packaging box with self-destruction function |
| CN105827398A (en) * | 2016-04-01 | 2016-08-03 | 山东超越数控电子有限公司 | Secret key destruction method of hand-held device |
| CN111291390A (en) * | 2020-01-20 | 2020-06-16 | 中国人民解放军海军工程大学 | Key data safety destruction triggering system and triggering method |
-
2010
- 2010-10-18 CN CN2010205647621U patent/CN201812500U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103778959A (en) * | 2012-10-23 | 2014-05-07 | 三星电子株式会社 | Data storage device, controller, and operating method of data storage device |
| CN103778959B (en) * | 2012-10-23 | 2019-04-16 | 三星电子株式会社 | The operating method of data storage device, controller and data storage device |
| CN103390125A (en) * | 2013-07-19 | 2013-11-13 | 丁贤根 | Design method for safe and mobile storage controller authorized and encrypted/decrypted by wireless terminal |
| CN103390125B (en) * | 2013-07-19 | 2016-01-06 | 丁贤根 | By the safety moving memory controller method for designing of wireless terminal mandate and encryption and decryption |
| CN105151526A (en) * | 2015-07-31 | 2015-12-16 | 武汉家事易农业科技有限公司 | Food packaging box with self-destruction function |
| CN105827398A (en) * | 2016-04-01 | 2016-08-03 | 山东超越数控电子有限公司 | Secret key destruction method of hand-held device |
| CN111291390A (en) * | 2020-01-20 | 2020-06-16 | 中国人民解放军海军工程大学 | Key data safety destruction triggering system and triggering method |
| CN111291390B (en) * | 2020-01-20 | 2022-05-20 | 中国人民解放军海军工程大学 | Triggering system and triggering method for safe destruction of critical data |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100085 No. 1, building 2, international pioneer garden, No. 2 information road, Beijing, Haidian District, 22D Patentee after: Liu Yong Address before: Box No. 86 No. 10 Beijing University of Posts and Telecommunications Beijing 100876 Haidian District Xitucheng Road Patentee before: Liu Yong |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20121018 |