CN201877127U - USB (Universal Serial Bus) flash disk capable of preventing important data from being lost - Google Patents
USB (Universal Serial Bus) flash disk capable of preventing important data from being lost Download PDFInfo
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- CN201877127U CN201877127U CN2010206577043U CN201020657704U CN201877127U CN 201877127 U CN201877127 U CN 201877127U CN 2010206577043 U CN2010206577043 U CN 2010206577043U CN 201020657704 U CN201020657704 U CN 201020657704U CN 201877127 U CN201877127 U CN 201877127U
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- flash disk
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- write
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Abstract
The utility model relates to a USB flash disk capable of preventing important data from being lost, which comprises a USB flash disk body, a USB male connector, a USB-HUB chip, a main control chip A, a flash memory chip A, a main control chip B, a flash memory chip B, a write-protecting switch and leads, wherein the USB flash disk body is provided with the USB male connector, the USB-HUB chip, the main control chip A, the flash memory chip A, the main control chip B, the flash memory chip B and the write-protecting switch, the leads connect the positive and the negative voltage connectors and the positive and the negative data connectors of the USB male connector to the USB-HUB chip, the main control chip A is connected with the USB-HUB chip and the flash memory chip A through the leads, the main control chip B is connected with the USB-HUB chip and the flash memory chip B through the leads, and the write-protecting switch is connected to the write-protecting pins of the main control chip B through the leads. The USB flash disk has the advantages that: the USB flash disk is convenient to carry, and cannot be easily lost, the USB flash disk does not need to be replaced when important data need to be stored, the user habit is satisfied, and while the USB flash disk is convenient to use, the USB flash disk protects important data.
Description
Technical field
The utility model relates to a kind of electronic product, a kind of USB flash disk that prevents loss of vital data of saying so more specifically.
Background technology
Develop rapidly along with computer technology and information storage technology, advantages such as USB mobile storage disc (USB flash disk) is easy to carry because of it is small and exquisite, memory capacity is big, easy to use, in modern's information life, playing the part of important role, the important data of people's USB flash disk storage commonly used.USB flash disk just can cause loss of vital data in a single day because of line fault, improper use or virus damage, causes heavy losses.For this reason, many people carry two USB flash disks simultaneously, and a USB flash disk is used for normal use, and another USB flash disk is used to store significant data, but is inconvenient to carry like this, lose easily, and need change USB flash disk when the storage significant data, and inconvenient operation does not meet use habit.The USB flash disk of write-protect function has also appearred having in the market; its write protector can be by manually enabling; can't confirm that a computing machine is safe; when not having computer virus; people can open the write-protect function of USB flash disk; but all interior data informations of USB flash disk this moment all can't call; some unessential data also can't be carried out write operation; and people when the USB flash disk that the write-protect function will be arranged connects the computer can't confirm data security, often only wish USB flash disk in important data carry out write-protect; for general in the USB flash disk, unessential data people then wish to carry out write operation and use with convenient.
The utility model content
The purpose of this utility model is that a kind of USB flash disk that prevents loss of vital data is provided in order to solve existing issue, when this USB flash disk can't be confirmed the computer of data security in connection, the write-protect switch of USB flash disk can be opened, significant data in the USB flash disk is carried out write-protect, significant data can only be carried out read operation, can prevent loss of vital data or damage, and the general data in the USB flash disk then without limits, can carry out read-write operation arbitrarily, use with convenient; When this USB flash disk connection can be confirmed the computer of data security, the write-protect switch of USB flash disk can be disconnected, all data in the USB flash disk all can be carried out read-write operation, to upgrade the significant data in the USB flash disk.
The purpose of this utility model can realize in the following manner: a kind of USB flash disk that prevents loss of vital data; comprise the USB flash disk main body; the USB male; the USB-HUB chip; main control chip A; flash chip A; main control chip B; flash chip B; write-protect switch and lead; the USB flash disk main body is provided with the USB male; the USB-HUB chip; main control chip A; flash chip A; main control chip B; flash chip B and write-protect switch; lead is with the voltage "+" of USB male; "-" interface and data "+"; "-" interface is connected on the USB-HUB chip; main control chip A links to each other with flash chip A with the USB-HUB chip by lead; main control chip B links to each other with flash chip B with the USB-HUB chip by lead, and write-protect switch is wired on the write-protect pin of main control chip B.
Described write-protect switch is positioned at the side of USB flash disk main body.
The utility model compared with prior art has following advantage: compare with the scheme of carrying two USB flash disks, carry more conveniently, be difficult for losing, do not need to change USB flash disk during the storage significant data, meet user's use habit; Compare with the USB flash disk that has the write-protect function, can when USB flash disk be in the write-protect state, unessential data be carried out read-write operation, and significant data is only allowed to carry out read operation, protected significant data in the time of convenient the use.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1, USB flash disk main body, 2, the USB male, 3, the USB-HUB chip, 4, main control chip A, 5, flash chip A, 6, main control chip B, 7, flash chip B, 8, write-protect switch, 9, lead.
Embodiment
1 is as follows with reference to the accompanying drawings: a kind of USB flash disk that prevents loss of vital data; comprise USB flash disk main body (1); USB male (2); USB-HUB chip (3); main control chip A(4); flash chip A(5); main control chip B(6); flash chip B(7); write-protect switch (8) and lead (9); USB flash disk main body (1) is provided with USB male (2); USB-HUB chip (3); main control chip A(4); flash chip A(5); main control chip B(6); flash chip B(7) and write-protect switch (8); lead (9) is with the voltage "+" of USB male (2); "-" interface and data "+"; "-" interface is connected on the USB-HUB chip (3); main control chip A(4) by lead (9) and USB-HUB chip (3) and flash chip A(5) link to each other; main control chip B(6) by lead (9) and USB-HUB chip (3) and flash chip B(7) link to each other, write-protect switch (8) is connected to main control chip B(6 by lead (9)) the write-protect pin on.Main control chip B(6) the write-protect function is arranged.In the present embodiment, write-protect switch (8) is positioned at the side of USB flash disk main body.
The user with unessential data by main control chip A(4) deposit flash chip A(5 in) in; with important data by main control chip B(6) deposit flash chip B(7 in) in; when the connection of this USB flash disk can't be confirmed the computer of data security; the write-protect switch (8) of USB flash disk can be opened; this moment main control chip B(6) be in the write-protect state; computer system can not be to main control chip B(6) the flash chip B(7 that connects) in significant data carry out write operation; carry out read operation only; and since this moment main control chip A(4) be not in the write-protect state, computer system can be to main control chip A(4) the flash chip A(5 that connects) in non-significant data carry out read-write operation.So just can be in convenient the use protection flash chip B(7) in significant data.When the connection of this USB flash disk can be confirmed the computer of data security; the write-protect switch (8) of USB flash disk can be disconnected; this moment main control chip A(4) and main control chip B(6) all be not in the write-protect state; computer system can be to flash chip A(5) and flash chip B(7) in data carry out read-write operation, this moment, the user can be to flash chip B(7) in significant data upgrade.
Claims (2)
1. USB flash disk that can prevent loss of vital data, comprise USB flash disk main body (1), USB male (2), USB-HUB chip (3), main control chip A(4), flash chip A(5), main control chip B(6), flash chip B(7), write-protect switch (8) and lead (9), it is characterized in that: described USB flash disk main body (1) is provided with USB male (2), USB-HUB chip (3), main control chip A(4), flash chip A(5), main control chip B(6), flash chip B(7) and write-protect switch (8); Described lead (9) is connected to voltage "+", "-" interface and data "+", "-" interface of USB male (2) on the USB-HUB chip (3); Described main control chip A(4) by lead (9) and USB-HUB chip (3) and flash chip A(5) link to each other; Described main control chip B(6) by lead (9) and USB-HUB chip (3) and flash chip B(7) link to each other; And described write-protect switch (8) is connected to main control chip B(6 by lead (9)) the write-protect pin on.
2. USB flash disk according to claim 1 is characterized in that: write-protect switch (8) is positioned at the side of USB flash disk main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206577043U CN201877127U (en) | 2010-12-14 | 2010-12-14 | USB (Universal Serial Bus) flash disk capable of preventing important data from being lost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206577043U CN201877127U (en) | 2010-12-14 | 2010-12-14 | USB (Universal Serial Bus) flash disk capable of preventing important data from being lost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877127U true CN201877127U (en) | 2011-06-22 |
Family
ID=44165040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206577043U Expired - Fee Related CN201877127U (en) | 2010-12-14 | 2010-12-14 | USB (Universal Serial Bus) flash disk capable of preventing important data from being lost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877127U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820048A (en) * | 2012-08-09 | 2012-12-12 | 郑州信大捷安信息技术股份有限公司 | USB flash disk having write-protection function and implementation method thereof |
| CN103295618A (en) * | 2013-06-05 | 2013-09-11 | 黑龙江大学 | U disk capable of automatically removing hardware |
| CN106779025A (en) * | 2016-12-09 | 2017-05-31 | 杭州佩安科技有限公司 | A kind of new non-volatile anti-alterable storage |
| CN109961127A (en) * | 2019-05-07 | 2019-07-02 | 大连海事大学 | A kind of multimode multi partition USB flash disk |
-
2010
- 2010-12-14 CN CN2010206577043U patent/CN201877127U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102820048A (en) * | 2012-08-09 | 2012-12-12 | 郑州信大捷安信息技术股份有限公司 | USB flash disk having write-protection function and implementation method thereof |
| CN102820048B (en) * | 2012-08-09 | 2014-09-03 | 郑州信大捷安信息技术股份有限公司 | USB flash disk having write-protection function and implementation method thereof |
| CN103295618A (en) * | 2013-06-05 | 2013-09-11 | 黑龙江大学 | U disk capable of automatically removing hardware |
| CN106779025A (en) * | 2016-12-09 | 2017-05-31 | 杭州佩安科技有限公司 | A kind of new non-volatile anti-alterable storage |
| CN106779025B (en) * | 2016-12-09 | 2024-04-19 | 杭州佩安科技有限公司 | Novel nonvolatile anti-rewriting memory |
| CN109961127A (en) * | 2019-05-07 | 2019-07-02 | 大连海事大学 | A kind of multimode multi partition USB flash disk |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111214 |