KR100887551B1

KR100887551B1 - Usb equipped with locking means

Info

Publication number: KR100887551B1
Application number: KR1020080103595A
Authority: KR
Inventors: 이경묵
Original assignee: (주)화이트클라우드
Priority date: 2008-09-18
Filing date: 2008-10-22
Publication date: 2009-03-09

Abstract

The present invention relates to a USB (removable storage device), and more specifically, it is necessary to enter a password to communicate data with a PC, and if the password input is wrong more than several times, the memory is destroyed so that an external person loses the USB. It strengthens security by preventing access to the data stored in memory, and goes a step further by setting a password for each folder stored in memory so that even if an outsider accidentally accesses the memory, the data cannot be accessed unless the password of the folder is known. Improved security by preventing it, and interlocked with various OFFICE programs to automatically save files in the case of password setting error in memory, built-in battery in USB main body and MP3 player in addition to memory to enhance user convenience It relates to a USB having a device.

USB having a lock of the present invention main body; A terminal unit provided at an external side of the main body and connected to a USB port of a PC; A data communication unit embedded in the main body and including a memory for storing various data and a communication controller controlling data communication between the PC and the memory through the terminal unit; A discrimination unit comparing a plurality of input buttons provided on the outside of the main body with a password inputted from the input button and a previously stored password, and determining whether or not a match is detected; And a locking device unit including a connection controller configured to control an electrical connection between the terminal and the communication controller by turning on and off a driving power supply for driving the communication controller.

Description

USB equipped with locking means

As peripherals become more diverse today, there is a shortage of physical space between the slots that connect card-type devices used in conventional PC environments, and the ports that connect peripheral devices such as printers and mice. Many peripherals cannot be connected.

To solve this problem, a new method of device connection, called Universal Serial Bus (USB), has been developed.

USB has a built-in memory, which can be useful for many kinds of tasks such as users who move data frequently, give presentations frequently, and work in graphic related fields.It can also be used as a backup device by attaching it to expensive equipment. It is also useful for archiving files that should not be viewed by others.

However, the existing USB has a problem that anyone can easily access the PC to read and write the data stored in the memory and frequently leak important data when lost.

As a security measure for the problems of the existing USB, the Korean Utility Model Registration No. 0382521, "USB drive device incorporating a mechanical / electronic access control / blocking device", has been proposed.

However, the registration utility model states that 'key or other mechanical method' or 'control access to the USB drive by using an input unit including a button and an LCD or other electronic method' is disclosed. It is nothing more than a question of the need to prevent outsiders from accessing USB.

And even if the registration utility model has a built-in mechanical or electronic access restriction device, a third party who acquires USB will someday release it if he tries to release the access restriction device. The data will be passed on to third parties.

Therefore, if the attempt to release the restricted device is repeated several times, it is necessary to strengthen the security by destroying the USB itself so that important data stored in the memory cannot be passed on to outsiders.

The present invention has been made to solve the above problems, the password must be correctly entered in order to access the memory of the USB, and if the password is input several times in error more than a few times by destroying the memory itself to the outsiders Enhance security so that it does not fall, and even if an outsider accidentally accesses the memory, the password is re-entered for each data folder in the memory for added security, and a built-in battery and an MP3 player are provided to enhance user convenience. It is an object to provide a USB with a device.

USB having a locking device of the present invention for achieving the above object is

main body;

A terminal unit provided at an external side of the main body and connected to a USB port of a PC;

A memory built in the main body and storing various data;

A data communication unit including a communication controller controlling data communication between the PC and the memory through the terminal unit;

A plurality of input buttons provided on the outside of the main body,

A determination unit for comparing the password inputted from the input button with a previously stored password and determining whether or not a match is obtained;

And a connection controller configured to control the electrical connection between the terminal and the communication controller by turning on and off a driving power supply for driving the communication controller according to a password matching result determination signal transmitted by the determination unit.

And the locking device unit

When the password inputted through the input button is different from the password previously stored in the determination unit several times in succession, the password is operated by a signal transmitted by the determination unit, so that the memory or the communication controller or the memory and the communication controller It characterized in that it further comprises an overcurrent applying unit for applying an overcurrent to the destruction;

Earphone jack to which the earphone is connected,

A reading unit which reads sound source data stored in the memory and outputs the same through the earphone jack;

Further comprising an MP3 player unit including a plurality of command buttons for inputting various command signals to the read unit,

The reading unit may be driven only when the driving power supply is turned on and off by the connection control unit so that the password inputted to the determination unit matches a previously stored password.

A battery for supplying power to the MP3 player;

Further comprising a charging unit for charging the battery by receiving power through the terminal unit,

And the connection controller controls the battery to supply power to the MP3 player through the charging unit only when there is a password matching signal from the determination unit.

The connection control unit

A first transistor turned on and off by a password matching determination result signal transmitted from the determination unit;

A second transistor which is turned on as the first transistor is turned on, and conducts power input from the terminal unit;

And a capacitor for supplying driving power to the communication controller by smoothing the output power of the second transistor.

The overcurrent applying unit

An amplifier comprising a resistor and a coil connected in series with the resistor and amplifying a current input from the battery;

An output unit configured to include a diode and a capacitor connected to the diode in parallel, and outputting the output current of the amplifier to direct current to the memory or the communication controller or the memory and the communication controller;

And receiving a signal from the discriminating unit and controlling the microcomputer to control the power of the battery to be input to the amplifying unit.

According to the present invention having the above-described configuration, the user can access the memory only by correctly inputting a password using a button, and if the password is input wrongly several times, the memory is destroyed by itself so that outsiders cannot acquire the data of the memory. It enhances data security and enhances user convenience by embedding battery and MP3 player.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a perspective view of a USB having a lock according to the present invention, FIG. 2 is a schematic block diagram of components built into the main body, FIG. 3 is a circuit diagram of a data communication unit and a lock unit, and FIG. 4 is a charging unit. 5 is a circuit diagram of the MP3 player unit.

As shown in the figure, the USB device with the lock of the present invention includes a main body 10, a terminal unit 20, a data communication unit 30, a lock unit 40, an MP3 player unit 50, a battery 60, It includes a charging unit 70.

The main body 10 protects the built-in components, and the terminal unit 20 is connected to a USB port of a PC.

The data communication unit 30 includes a memory 31 in which various data are stored;

And a communication controller 33 for controlling data transmission and reception between the memory and the PC.

The memory 31 and the communication controller 33 are provided with a plurality of connection portions 3V3 to which an overcurrent (including an overvoltage) is applied from the overcurrent applying unit 47 when a password input error occurs several times or more. The communication controller 33 is provided with a clock oscillation unit 33a for transmitting and receiving data with a PC connected through the terminal unit 20 in a digital communication method.

Since the data communication unit 30 is not significantly different from the data communication unit provided in the general USB, a detailed description thereof will be omitted.

The locking device 40 has a plurality of input buttons 41 provided on the outside of the body,

A discriminating unit 43 which compares the password inputted through the input button with a previously stored password and determines whether the password is matched;

The data communication unit 30 and the terminal unit 20 are electrically connected to each other (i.e., supplying driving power to the data communication unit) only when a signal indicating that the password is identical from the determination unit enables data exchange between the PC and the data communication unit. And the connection controller 45 for supplying driving power to the MP3 player unit 50.

An over-current applying unit for applying an over-current (including over-voltage) to the memory 31 or the communication controller 33 when the password inputted through the input button 41 is wrong more than several times (eg, three times). 47 is made.

The input button 41 is usually composed of numeric buttons and is connected to the IC chip U4 of the discriminating unit 43.

The determination unit 43 compares the password inputted from the input button 41 with a previously stored password to determine whether the IC chip U4 and the password input to the IC chip U4 match. Including red and green LED lamp 43a indicating whether or not,

The IC chip U4 is connected with a setting / release button 42 used for setting or releasing a stored password, and downloading various programs from the outside to the overcurrent applying unit 47 and the MP3 player unit ( A connection port U5 is connected to the reading part 53 of FIG. 50 and transmits a signal.

The connection controller 45 supplies power input through the terminal unit 20 to the communication controller 33 when there is a password matching signal from the determination unit 43, and there is a signal from the determination unit 43. Is transmitted to the charging unit 70 so that the power of the battery 60 is supplied to the MP3 player unit 50.

The connection control unit 45 is a first transistor (Q1) is turned on, off (ON, OFF) by the password matching result determination signal transmitted by the IC chip (U4) of the determination unit 43, and the first As the transistor Q1 is turned on, the second transistor Q2 which is turned on to conduct the power input from the terminal unit 20 and the output power of the second transistor Q2 are smoothed to form the second transistor Q2. And a capacitor C2 for supplying driving power to the communication controller 33.

The overcurrent applying unit 47 is connected to the determination unit 43 and the battery 60,

When the password is received from the determination unit 43 several times in succession of an input error, the power input from the battery 60 is increased by a voltage or a current (UP) and the overcurrent or overvoltage is supplied to the data communication unit 30. And destroys them by applying them to the memory 31 or the communication controller 33 so that important data stored in the memory 31 is not leaked to a third party.

The overcurrent applying unit comprises a resistor R83 and a coil L5 connected in series with the resistor, an amplifier 47a for amplifying a current (or voltage) input from the battery;

And a diode D10 and capacitors C55 and C60 connected in parallel to the diode, and directing the output current of the amplifier 47a to the memory 31 or the communication controller 33 or An output unit 47b for applying an overcurrent to the memory and the communication controller,

It receives a signal from the determination unit 43 and comprises a microcomputer (U7) for controlling the power of the battery 60 is input to the amplifier 47a.

The charging unit 70 receives power from the outside (usually a PC) through the terminal unit 20 to charge the battery 60, the user inputs a command button in the state that the password input to the determination unit 43 is matched When the 55 is operated, the power of the battery 60 is supplied to the MP3 player 50.

The charging unit 70 is composed of a diode (D7, D14), a transistor (Q13), a capacitor (C51), an inductor (BD9, BD10), etc., the charging circuit unit 71 for charging the battery 60,

A driving power supply circuit unit 73 for converting power of the battery 60 and supplying driving powers (eg, 1.2V and 3.3V) of various sizes to the MP3 player unit 50;

An IC chip U11 connected to the charging circuit unit 71 and the driving power supply circuit unit 72 to control them;

The charging state monitoring circuit unit 72 monitors the charging state of the battery 60 and transmits the result to the IC chip U11 and the reading unit 53.

The MP3 player unit 50 includes a plurality of command buttons 55, an earphone jack 51 to which earphones are connected, an output unit 52 for filtering and outputting sound source data, and a dock for controlling the MP3 player unit 50 as a whole. It is connected to the output unit 53, the display unit 56 for displaying the operating state of the MP3 player unit 50 by LED, the noise removing unit 57 for removing the noise of the power supplied from the battery, the connection controller 45 If the match is made to include a battery connection 58 for supplying power to the battery.

The battery connection unit 58 is connected to the connection control unit 45, and when the password input to the determination unit 43 matches the signal to the reading unit 53 and at the same time of the charging unit 70 The battery 60 and the MP3 player unit 50 are electrically connected to the IC chip U11.

The reading unit 53 processes a command signal input from the command button 55, reads sound source data stored in the memory, and outputs the sound through the earphone jack.

The plurality of command buttons 55 are for user operation, and the display unit 56 including a plurality of LEDs D5, D6, D12, and D13 is for displaying an operation state of the MP3 player to the user.

The noise removing unit 57 is composed of a plurality of capacitors, so that the noise included in the output power of the battery can be removed to listen to a cleaner sound quality.

The output unit 52 includes an HPF 52a and an LPF 52b for filtering the high frequency band and the low frequency band of the sound source data transmitted from the reader, and the recording unit 52c for recording an external sound source; The silencer 52d for temporarily blocking the output of the sound source through the earphone jack 51 is connected.

Reference numeral 54 is a constant voltage circuit for converting and outputting the output voltage of the battery into a constant voltage of a constant size and supplying it to the output unit 52, the display unit 56, the command button 55, etc.

Reference numeral 59 is a clock oscillator for generating a signal issued by the reader 53 or a signal input to the reader.

In the above description of the present invention has been described with reference to the accompanying drawings, a USB having a locking device having a specific structure, but the present invention can be variously modified and changed by those skilled in the art, such variations and modifications of the present invention It should be interpreted as being within the scope of protection.

1 is a perspective view of a USB with lock according to the invention.

2 is a schematic block diagram of a USB according to the present invention;

3, 4, and 5 are more specific circuit diagrams of FIG.

10: main body 20: terminal

30: data communication unit 31: memory

33: communication controller 40: locking device

41: input button 43: discrimination unit

45: connection control unit 50: MP3 player unit

60: battery 70: charging unit

Claims

delete

main body;

A memory built in the main body and storing various data;

A plurality of input buttons provided on the outside of the main body,

A locker unit including a connection controller for controlling electrical connection between the terminal unit and the communication controller by turning on or off a driving power supply for driving the communication controller according to a password matching determination result signal transmitted by the determination unit; Including but not limited to

The lock unit

When the password inputted through the input button is different from the password previously stored in the determination unit several times in succession, the password is operated by a signal transmitted by the determination unit, so that the memory or the communication controller or the memory and the communication controller And an overcurrent applying unit for applying an overcurrent to and destroying the overcurrent.

The method of claim 2,

Earphone jack to which the earphone is connected,

And the readout part is driven only when the driving power supply is turned on and off by the connection control part and the password inputted to the discrimination part matches a pre-stored password.

The method of claim 3, wherein

A battery for supplying power to the MP3 player;

The method of claim 4, wherein the connection control unit

The method of claim 5, wherein the overcurrent applying unit

And a microcomputer for receiving a signal from the determination unit and controlling the power of the battery to be input to the amplifying unit.