CN101599297A - Safe U disc - Google Patents
Safe U disc Download PDFInfo
- Publication number
- CN101599297A CN101599297A CNA2009100410185A CN200910041018A CN101599297A CN 101599297 A CN101599297 A CN 101599297A CN A2009100410185 A CNA2009100410185 A CN A2009100410185A CN 200910041018 A CN200910041018 A CN 200910041018A CN 101599297 A CN101599297 A CN 101599297A
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- power management
- microprocessor
- management chip
- safe
- disc
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Abstract
A kind of safe U disc, by shell, lid and circuit board are formed, on circuit board, be provided with USB plug, microprocessor, pin-saving chip, power management chip, battery, the button clear switch, false action-proof switch and electronic switch, USB plug and microprocessor and power management chip are and are connected in parallel, pin-saving chip is connected on an end of microprocessor, microprocessor is by electronic switch and Safety Sweep switch in parallel, receive power management chip with the misoperation switch again, one termination of power management chip has dc-battery, and another end points and the USB plug of power management chip are joined.Adopt the said safe U disc of the present invention, because it has internal battery, so when being behind the safe U disc separating computer under the electroless state situation, battery can be powered to it, can carry out off line removing work, simultaneously USB plug is with microprocessor and power management chip and is connected in parallel, so still can normally use when safe U disc part assembly breaks down.
Description
Technical field
The present invention is a kind of data storage device with USB interface, particularly a kind of safe U disc with the storage of encrypting, off line removing function.
Background technology
The development course of modern computer many decades is carried and reflected to data storage as a basic technology.In existing technology, common in external memory device, all the dress with flash medium, password encryption, encrypting fingerprint, button scavenge unit, in any case, though the file data under off-line state in the external memory device is not temporarily opened, but can't prevent that but others from directly reading the data in the storage chip, the hidden danger of divulging a secret still leaves.The patent No. be CN99117225.6's " electronic flash storage method and the device thereof that are used for data handling system " invention introduce introduce the USB flash disk power supply by USB or IEEE1394 bus, external memory device is confined to not have after this device has electricity, separating computer when connecting computer the state of electricity, and external memory device can't be worked during off line; Application number is 200610145336.2 safe U disk memorizer, a kind of device that makes USB flash disk self have power supply is disclosed, having broken the patent No. is the defective as a result of the external memory device of CN99117225.6 setting, guaranteed that external memory device can in time remove the related data in the external memory device under offline condition, prevented that others from directly reading the data in the storage chip.But because in the connecting circuit of 200610145336.2 safe U disk memorizer, its USB plug is to adopt the mode that is connected in series with linking to each other of power management chip and microprocessor, in case in use be that power management chip breaks down or the part circuit of microprocessor occurs unusually all causing whole external memory device assembly to work.
Summary of the invention
Goal of the invention of the present invention is to provide a kind of built-in power that both had, can prevent again simultaneously when the inner subassembly of external memory device from breaking down still can operate as normal safe U disc.
The said safe U disc of the present invention, by shell, lid and circuit board are formed, on circuit board, be provided with USB plug 1, microprocessor 2, pin-saving chip 3, power management chip 4, battery 5, button clear switch S1, false action-proof switch S 2 and electronic switch Q1, wherein said USB plug 1 is with microprocessor 2 and power management chip 4 and is connected in parallel, pin-saving chip 3 is connected on an end of microprocessor 2, output terminal 6 at microprocessor 2,7 by electronic switch Q1 and 1 parallel connection of Safety Sweep switch S, be connected to the input end 8 of power management chip 4 again with misoperation switch S 2, one end 9 of power management chip 4 is connected to dc-battery 5, and another end points 10 of power management chip 4 joins by power lead and USB plug 1.
Adopt the said safe U disc of the present invention, be connected in parallel because said USB plug 1 is with microprocessor 2 and power management chip 4, so safe U disc still can normally use when safe U disc part assembly breaks down.In addition because the safety USB flash disk has internal battery 5, so when being behind the safe U disc separating computer under the electroless state situation, battery 5 can be given the safe U disc power devices.
Description of drawings
Fig. 1 connects block diagram for the said safe U disc circuit of the present invention.
Embodiment
Be described further below in conjunction with accompanying drawing.
As shown in Figure 1, the said safe U disc of the present invention, by shell, lid and circuit board are formed, on circuit board, be provided with USB plug 1, microprocessor 2, pin-saving chip 3, power management chip 4, battery 5, button clear switch S1, false action-proof switch S 2 and electronic switch Q1, wherein said USB plug 1 is with microprocessor 2 and power management chip 4 and is connected in parallel, pin-saving chip 3 is connected on an end of microprocessor 2, output terminal 6 at microprocessor 2,7 by electronic switch Q1 and 1 parallel connection of Safety Sweep switch S, be connected to the input end 8 of power management chip 4 again with misoperation switch S 2, one end 9 of power management chip 4 is connected to dc-battery 5, and another end points 10 of power management chip 4 joins by power lead and USB plug 1.Adopt the said safe U disc of the present invention, be connected in parallel, so safe U disc still can normally use when safe U disc power management chip 4 or internal battery 5 break down because said USB plug 1 is with microprocessor 2 and power management chip 4.Add false action-proof switch S 2 in the circuit, only when false action-proof switch S 2 closures, button clear switch S1 just can be effective in assurance; By power management chip 4 and internal battery 5 to button clear switch S1, guaranteed that safe U disc can in time remove the related data in the safe U disc under offline condition; Encrypt by microprocessor 2 direct control data storage chips 3, prevent that others from directly reading the data in the storage chip, microprocessor 2 and USB plug 1 directly link, after safe U disc inserts computer, open microprocessor 2 by password, microprocessor 2 is carried out built-in commands and is driven by safe U disc USB plug 1 all network interface cards of forbidding computer, effectively guarantees to prevent under a stable condition generation of divulging a secret.Simultaneously in use no matter be that the part circuit of microprocessor 2 occurs unusual or power management chip 4 or internal battery 5 is damaged, whole safe U disc can both normally carry out work.
The said safe U disc of the present invention has been installed rechargeable battery 5 on circuit board, when the USB plug 1 of safe U disc connected computer, computer was powered to safe U disc, charged for battery 5 by power management chip 4 simultaneously; Extracting computer when the USB plug of safe U disc is under the electroless state situation, battery 5 is powered for safe U disc, when pushing button clear switch S1, battery 5 is powered to microprocessor by electronic switch Q1, press continuously after 5 seconds, microprocessor 2 is carried out in house software the data in the data storage chip 3 is carried out full scale clearance, and removing finishes, and microprocessor cuts off the power supply automatically.
Claims (1)
1, a kind of safe U disc, by shell, lid and circuit board are formed, on circuit board, be provided with USB plug (1), microprocessor (2), pin-saving chip (3), power management chip (4), battery (5), button clear switch (S1), false action-proof switch (S2) and electronic switch (Q1), it is characterized in that: said USB plug (1) is with microprocessor (2) and power management chip (4) and is connected in parallel, pin-saving chip (3) is connected on an end of microprocessor (2), output terminal (6) in microprocessor (2), (7) by electronic switch (Q1) and Safety Sweep switch (S1) parallel connection, be connected to the input end (8) of power management chip (4) again with misoperation switch (S2), one end (9) of power management chip (4) is connected to dc-battery (5), and another end points (10) of power management chip (4) joins by power lead and USB plug (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100410185A CN101599297A (en) | 2009-07-10 | 2009-07-10 | Safe U disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100410185A CN101599297A (en) | 2009-07-10 | 2009-07-10 | Safe U disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101599297A true CN101599297A (en) | 2009-12-09 |
Family
ID=41420705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100410185A Pending CN101599297A (en) | 2009-07-10 | 2009-07-10 | Safe U disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101599297A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402656A (en) * | 2010-09-19 | 2012-04-04 | 邹芬 | Method for realizing software authorization by using dual power supply system device independent of host computer in real time |
| CN105809069A (en) * | 2015-01-21 | 2016-07-27 | 联想（新加坡）私人有限公司 | Device and method for prevention of removal of solid state drive being accessible, and solid state drive |
| CN108418260A (en) * | 2017-02-09 | 2018-08-17 | 百帝安（北京）科技有限公司 | USB product power supply techniques |
-
2009
- 2009-07-10 CN CNA2009100410185A patent/CN101599297A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102402656A (en) * | 2010-09-19 | 2012-04-04 | 邹芬 | Method for realizing software authorization by using dual power supply system device independent of host computer in real time |
| CN105809069A (en) * | 2015-01-21 | 2016-07-27 | 联想（新加坡）私人有限公司 | Device and method for prevention of removal of solid state drive being accessible, and solid state drive |
| CN108418260A (en) * | 2017-02-09 | 2018-08-17 | 百帝安（北京）科技有限公司 | USB product power supply techniques |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091209 |