CN203825637U - USB flash disk encryption starting-up device for computer - Google Patents
USB flash disk encryption starting-up device for computer Download PDFInfo
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- CN203825637U CN203825637U CN201420228730.2U CN201420228730U CN203825637U CN 203825637 U CN203825637 U CN 203825637U CN 201420228730 U CN201420228730 U CN 201420228730U CN 203825637 U CN203825637 U CN 203825637U
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Abstract
The utility model discloses a USB flash disk encryption starting-up device for a computer. The USB flash disk encryption starting-up device comprises a computer power source, a decoder and an encoder, wherein the computer power source, the decoder and the encoder are installed on a computer host. The computer power source is provided with a power source input socket, a filtering rectification circuit, an auxiliary switching power source and a main switching power source. The decoder is installed in the computer host. The encoder is externally inserted in a case of the computer host. The device is reasonable in design and simple in structure, power sources of a mainboard of the computer can be locked at the same time and can be unlocked only through the encoder on a USB flash disk structure, the anti-theft performance of data of the computer is effectively improved, and the safety of the data is ensured.
Description
Technical field
The utility model relates to computer anti-theft technical field, is specifically related to a kind of computing machine USB flash disk formula and encrypts opening device.
Background technology
Computing machine is widely used in work, especially the large career field of data volume such as finance, scientific research, in these career fields, often there are a lot of confidential datas, once confidential data leaks, may be a deathblow to whole company, the main frame of prior art or mainframe box all do not have anti-theft feature, calculate function and are arbitrarily opened and use, and data security exists very large hidden danger.
Summary of the invention
The purpose of this utility model is exactly the defect existing for prior art, provides a kind of computing machine USB flash disk formula to encrypt opening device.
Its technical scheme is: computing machine is encrypted opening device by USB flash disk formula, comprise the computer power, demoder and the scrambler that are arranged on host computer, computer power is provided with power supply input socket, filter rectifier, auxiliary switching power supply and main switch power supply, described demoder is arranged in host computer, and scrambler is extrapolated on computer host housing, described scrambler is by button, the first resistance, the second resistance, the first integrated package, the first toggle switch and plug composition, 1 pin of plug and the positive terminal of the first toggle switch, 18 pin of the first integrated package and one end of button are connected, 2 pin of plug are connected with 17 pin of 3 pin of plug and the first integrated package, the moved end of the first toggle switch is connected with 1-8 pin of the first integrated package respectively, between 15 pin of the first integrated package and 16 pin of the first integrated package, be connected the first resistance, the other end of button connects 10 pin of the first integrated package by the second resistance, 4 pin of plug and 14 pin of the first integrated package, 9 pin of the first integrated package and the negative pole end of the first toggle switch are connected, described demoder is by socket, the second toggle switch, the second integrated package, the 3rd resistance, the 4th resistance, electric capacity, triode, relay, the first diode, the second diode and the 3rd diode composition, 1 pin of socket and the positive terminal of the second toggle switch, 18 pin of the second integrated package, one end of relay, the negative pole of the second diode and the cathode output end of auxiliary switching power supply are connected, 2 pin of socket are connected with 14 pin of 3 pin of socket and the second integrated package, the moved end of the second toggle switch is connected with 1-8 pin of the second integrated package respectively, 4 pin of socket and the negative pole end of the second toggle switch, 9 pin of the second integrated package, the negative pole of electric capacity, the emitter of triode and the negative pole of computer power are connected, and between 15 pin of the second integrated package and 16 pin of the second integrated package, are connected the 3rd resistance, and the positive pole of 10 pin the first diodes of the second integrated package is connected, the negative pole of the first diode and the positive pole of electric capacity, one end of the negative pole of the 3rd diode and the 4th resistance is connected, and the 4th other end of resistance and the base stage of triode are connected, and the collector of triode is connected with the positive pole of the other end of relay and the second diode, described power supply input socket is connected with the input end of filter rectifier, output terminal one tunnel of filter rectifier is connected with the input end of auxiliary switching power supply, the relay normally open contact of separately leading up to is connected with the input end of main switch power supply, the output terminal of main switch power supply connects computer main board, main switch power supply+5V output terminal connects the positive pole of the 3rd diode.
Wherein, described plug is the plug of USB structure, and described socket is the socket of USB structure, is socket connection between plug and socket.Described scrambler is arranged in the housing of a USB flash disk structure, and the button of described button exposes outside housing.The model of described the first integrated package is PT2262.The model of described the second integrated package is PT2272-M6.Described the first toggle switch and the second toggle switch are tri-state toggle switch.
The utility model compared with prior art, has the following advantages: reasonable in design, simple in structure, lock the power supply of computer motherboard simultaneously, and the scrambler by USB flash disk structure could release, has effectively improved the theftproof performance of computer data, guarantees data security.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the utility model.
Embodiment
With reference to Fig. 1-Fig. 2, a kind of computing machine is encrypted opening device by USB flash disk formula, comprise the computer power 1, demoder 2 and the scrambler 3 that are arranged on host computer, computer power 1 is provided with power supply input socket CZ, filter rectifier LZ, auxiliary switching power supply FK and main switch power supply ZK, demoder 2 is arranged in host computer 4, and scrambler 3 is extrapolated on host computer 4 shells, described scrambler 3 is by button AN, resistance is the first resistance R 1 of 1.2M Ω, resistance is the second resistance R 2 of 5.1K Ω, model is the first ic chip 1 of PT2262, the first toggle switch K1 and plug N1 composition, 1 pin of plug N1 and the positive terminal of the first toggle switch K1, 18 pin of the first ic chip are connected with one end of button AN, 2 pin of plug N1 are connected with 17 pin of 3 pin of plug N1 and the first ic chip 1, the moved end of the first toggle switch K1 is connected with 1-8 pin of the first ic chip 1 respectively, between 16 pin of 15 pin of the first ic chip 1 and the first ic chip 1, be connected the first resistance R 1, the other end of button AN connects 10 pin of the first ic chip 1 by the second resistance R 2, 14 pin of 4 pin of plug N1 and the first ic chip 1, 9 pin of the first ic chip 1 and the negative pole end of the first toggle switch K1 are connected, demoder 2 is by socket N2, the second toggle switch K2, model is the second ic chip 2 of PT2272-M6, resistance is the 3rd resistance R 3 of 200K Ω, resistance is the 4th resistance R 4 of 5.1K, the capacitor C of 100Uf/25V, model is 9014 triode T, relay J, model is the first diode D1 of 1N4148, model is the second diode D2 of 1N4148 and the 3rd diode D3 composition that model is 1N4148,1 pin of socket N2 and the positive terminal of the second toggle switch K2, 18 pin of the second ic chip 2, one end of relay J, the cathode output end of the negative pole of the second diode D2 and auxiliary switching power supply FK is connected, 2 pin of socket N2 are connected with 14 pin of 3 pin of socket N2 and the second ic chip 2, the moved end of the second toggle switch K2 is connected with 1-8 pin of the second ic chip 2 respectively, 4 pin of socket N2 and the negative pole end of the second toggle switch K2, 9 pin of the second ic chip 2, the negative pole of capacitor C, the negative pole of the emitter of triode T and computer power 1 is connected, between 16 pin of 15 pin of the second ic chip 2 and the second ic chip 2, be connected the 3rd resistance R 3, the positive pole of 10 pin the first diode D1 of the second ic chip 2 is connected, the first negative pole of diode D1 and the positive pole of capacitor C, one end of the negative pole of the 3rd diode D2 and the 4th resistance R 4 is connected, and the other end of the 4th resistance R 4 is connected with the base stage of triode T, and the collector of triode T is connected with the positive pole of the other end of relay J and the second diode D2, power supply input socket CZ is connected with the input end of filter rectifier LZ, output terminal one tunnel of filter rectifier LZ is connected with the input end of auxiliary switching power supply FK, the relay normally open contact J-1 of separately leading up to is connected with the input end of main switch power supply ZK, the output terminal of main switch power supply ZK connects computer main board ZB, main switch power supply ZK+5V output terminal connects the positive pole of the 3rd diode D3.Plug N1 is the plug of USB structure, and socket N2 is the socket of USB structure, is socket connection between plug N1 and socket N2.The first toggle switch K1 and the second toggle switch K2 are tri-state toggle switch.
Principle of work: the first resistance R 1, the resistance that is 1.2M Ω by button AN, resistance is the scrambler 3 that the first ic chip 1, the first toggle switch K1 and plug N1 that the second resistance R 2, the model of 5.1K Ω is PT2262 form, be arranged in the housing 5 of a USB flash disk structure, the button of button AN exposes outside housing 5, and computer owner carry.The second ic chip 2, the resistance that is PT2272-M6 by socket N2, the second toggle switch K2, model is the demoder 2 that the 3rd diode D3 that the first diode D1, model that the capacitor C of the 3rd resistance R 3, the resistance of 200K Ω the 4th resistance R 4 that is 20-100K, 100Uf/25V, triode T, relay J, model that model is 9014 the are 1N4,148 second diode D2 that is 1N4148 and model are 1N4148 forms, and is arranged in host computer 4.When use, the power supply input socket CZ of computer is connected to power supply by power lead, auxiliary switching power supply FK work, for demoder 2 provides power supply; In the time that the socket N2 of host computer 4 shells does not insert scrambler 3,10 pin non-output signals of the second ic chip 2 in demoder 2, not adhesive of relay J, due to series relay normally opened contact J-1 between filter rectifier LZ output terminal and main switch power supply ZK input end, therefore main switch power supply ZK does not work without input voltage, and computer main board ZB can not get any output voltage of main switch power supply ZK and the work of cannot starting shooting.When in the time that the socket N2 of host computer 4 shells inserts scrambler 3, 1 pin of socket N2 and 4 pin obtain working power by 1 pin and 4 pin of scrambler 3 plug N1, at this moment, press button AN, 17 outupt coded signals of the first ic chip 1, 14 pin that this coded signal is delivered to the second ic chip 2 by 3 pin of plug N1 and 3 pin of socket N2 are decoded, after decoding is correct, 10 pin output voltages of the second ic chip 2 drive triode T conducting, relay J adhesive, relay normally open contact J-1 closure, main switch power supply ZK obtains input voltage work, the output voltage that computer main board ZB the obtains main switch power supply ZK work of can starting shooting.After start, due to main switch power supply ZK+effect of 5V output voltage and the 3rd diode D3, the conducting and the adhesive that therefore keep triode T and relay J, computer main board ZB normally works, at this moment, computer owner can pull up scrambler 3.After the complete shutdown of computer work, because the output voltage of main switch power supply ZK all makes zero, triode T cut-off, relay J discharges, and disconnects being connected between filter rectifier LZ output terminal and main switch power supply ZK input end, and computer returns treats decrypted state.Because the model of the second ic chip 2 adopts PT2272-M6, so, 10 pin of IC2 are pressed and are had a Voltage-output with button AN's in scrambler 3, and button AN is not according to no-output, therefore, in the time of each start, insert after scrambler 3 button AN, press immediately the start button of computer, as do not pressed the start button of computer in certain hour, cannot start shooting, this time is determined by the parameter of capacitor C and the 4th resistance R 4.
While making the utility model, the dial-up position of the first toggle switch K1 and the second toggle switch K2 must be identical, otherwise cannot decode; The first ic chip 1 and the second ic chip 2 specific works principles are existing disclosed technology.
The utility model is reasonable in design, simple in structure, locks the power supply of computer motherboard simultaneously, by the scrambler ability release of USB flash disk structure, has effectively improved the theftproof performance of computer data, guarantees data security.
Claims (6)
1. computing machine is encrypted opening device by USB flash disk formula, comprise the computer power, demoder and the scrambler that are arranged on host computer, computer power is provided with power supply input socket, filter rectifier, auxiliary switching power supply and main switch power supply, it is characterized in that: described demoder is arranged in host computer, scrambler is extrapolated on computer host housing, described scrambler is by button, the first resistance, the second resistance, the first integrated package, the first toggle switch and plug composition, 1 pin of plug and the positive terminal of the first toggle switch, 18 pin of the first integrated package and one end of button are connected, 2 pin of plug are connected with 17 pin of 3 pin of plug and the first integrated package, the moved end of the first toggle switch is connected with 1-8 pin of the first integrated package respectively, between 15 pin of the first integrated package and 16 pin of the first integrated package, be connected the first resistance, the other end of button connects 10 pin of the first integrated package by the second resistance, 4 pin of plug and 14 pin of the first integrated package, 9 pin of the first integrated package and the negative pole end of the first toggle switch are connected, described demoder is by socket, the second toggle switch, the second integrated package, the 3rd resistance, the 4th resistance, electric capacity, triode, relay, the first diode, the second diode and the 3rd diode composition, 1 pin of socket and the positive terminal of the second toggle switch, 18 pin of the second integrated package, one end of relay, the negative pole of the second diode and the cathode output end of auxiliary switching power supply are connected, 2 pin of socket are connected with 14 pin of 3 pin of socket and the second integrated package, the moved end of the second toggle switch is connected with 1-8 pin of the second integrated package respectively, 4 pin of socket and the negative pole end of the second toggle switch, 9 pin of the second integrated package, the negative pole of electric capacity, the emitter of triode and the negative pole of computer power are connected, and between 15 pin of the second integrated package and 16 pin of the second integrated package, are connected the 3rd resistance, and the positive pole of 10 pin the first diodes of the second integrated package is connected, the negative pole of the first diode and the positive pole of electric capacity, one end of the negative pole of the 3rd diode and the 4th resistance is connected, and the 4th other end of resistance and the base stage of triode are connected, and the collector of triode is connected with the positive pole of the other end of relay and the second diode, described power supply input socket is connected with the input end of filter rectifier, output terminal one tunnel of filter rectifier is connected with the input end of auxiliary switching power supply, the relay normally open contact of separately leading up to is connected with the input end of main switch power supply, the output terminal of main switch power supply connects computer main board, main switch power supply+5V output terminal connects the positive pole of the 3rd diode.
2. computing machine according to claim 1 is encrypted opening device by USB flash disk formula, it is characterized in that: described plug is the plug of USB structure, and described socket is the socket of USB structure, is socket connection between plug and socket.
3. computing machine according to claim 1 is encrypted opening device by USB flash disk formula, it is characterized in that: described scrambler is arranged in the housing of a USB flash disk structure, and the button of described button exposes outside housing.
4. computing machine according to claim 1 is encrypted opening device by USB flash disk formula, it is characterized in that: the model of described the first integrated package is PT2262.
5. computing machine according to claim 1 is encrypted opening device by USB flash disk formula, it is characterized in that: the model of described the second integrated package is PT2272-M6.
6. computing machine according to claim 1 is encrypted opening device by USB flash disk formula, it is characterized in that: described the first toggle switch and the second toggle switch are tri-state toggle switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228730.2U CN203825637U (en) | 2014-05-07 | 2014-05-07 | USB flash disk encryption starting-up device for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420228730.2U CN203825637U (en) | 2014-05-07 | 2014-05-07 | USB flash disk encryption starting-up device for computer |
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| Publication Number | Publication Date |
|---|---|
| CN203825637U true CN203825637U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420228730.2U Expired - Fee Related CN203825637U (en) | 2014-05-07 | 2014-05-07 | USB flash disk encryption starting-up device for computer |
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| Country | Link |
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| CN (1) | CN203825637U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112540945A (en) * | 2021-02-01 | 2021-03-23 | 郑蕊蕊 | Accounting special computer with novel keyboard |
-
2014
- 2014-05-07 CN CN201420228730.2U patent/CN203825637U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112540945A (en) * | 2021-02-01 | 2021-03-23 | 郑蕊蕊 | Accounting special computer with novel keyboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20150507 |
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| EXPY | Termination of patent right or utility model |