KR20080012670A - Security apparatus using liquid crystal display - Google Patents

Abstract

A security device using an LCD(Liquid Crystal Display) is provided to offer user authentication information in various code types by using the LCD and enable a user to change code information freely for authenticating the user. A security key outputs a code for authentication through an LCD(50). An authenticator(30) determines the authentication for the security key by generating code information output from the LCD of the security key and permits a use right of a security requiring system(40) according to determination information. The security key includes the LCD for outputting the code in a light source type, an input device(21) receiving various kinds of control signal and the code information, a storing part(22) storing the code information and various kinds of operation program information, a controller(25) controlling each component, and a power supply unit(23) supplying power to each component. The input device includes an input port for receiving the code information from a code generator through communication with the code generator capable of generating the code information.

Description

SECURITY APPARATUS USING LIQUID CRYSTAL DISPLAY}

1 is a block diagram of an embodiment of a security device using a liquid crystal display device according to the present invention.

Figure 2 is an external configuration diagram of an embodiment of a security key applied to the present invention.

3 is an internal configuration diagram of a liquid crystal display device applied to the present invention.

<Explanation of symbols for main parts of the drawings>

10: security device using the liquid crystal display 30: authentication unit

40: security request system 60: security key

90: code

The present invention relates to a security device using a liquid crystal display device, and more particularly to a security device using a barcode provided through the liquid crystal display device.

The security devices (for example, various switchgear devices) commonly used today are mainly made of metal keys. In addition, a button-type security device capable of inputting a password and various electronic cards (RF card, etc.) Used security devices and security devices using biometric information such as fingerprints and irises are used.

In this case, a security device and a button type security device using a common metal key have a problem that the security function is limited only when the metal key is lost or the password is leaked.

In addition, electronic security devices using biometric information such as various electronic cards, fingerprints, irises, etc. are used in many cases where many users use security devices, or when the users have a lot of access, or when high security is required. However, once the electronic or biometric information of the user is leaked, there is a problem that the security function is limited.

On the other hand, electronic security devices are widely used because they are more advantageous for user authentication than security devices using metal keys and button type security devices, but such electronic security devices can be easily changed by the user. It is configured not to.

In this case, it may be advantageous for the user not to easily change the security information as described above, but the negative aspects are also highlighted by not being able to respond quickly when the security information is leaked.

Meanwhile, although not related to the security device as described above, the item information and price information of various items may be provided as a bar barcode or a rectangular two-dimensional code to be read through the reader. Bar code devices are now widely used.

At this time, the bar code device is conventionally used as a simple use for providing only the price information of the goods by simply consisting of a bar-shaped bar code, but in recent years is composed of a two-dimensional code to include more information It may also provide various image information or document information.

That is, as described above, even though the bar code, the two-dimensional code or the two-dimensional color code (hereinafter, simply referred to as 'code') may provide user information or more various information even though it is not at the level of a general storage medium, And yet there is a problem that security devices that can perform user authentication using it have not been developed.

Accordingly, an object of the present invention is to provide a security device using a liquid crystal display device which can perform user authentication by providing a code including user authentication information through the liquid crystal display device.

In order to achieve the above object, the security device using the liquid crystal display device according to the present invention, a security key for outputting a code for authentication through the liquid crystal display device; And an authentication unit configured to sense code information output from the liquid crystal display of the security key to determine whether to authenticate the security key, and to approve the use right of the security request system according to the determination information.

In addition, the security key, the liquid crystal display for outputting the code in the form of a light source (light); An input unit for receiving various control signals or code information; A storage device for storing code information transmitted from the input device and various driving program information; A controller for controlling the operation of the input device, the storage device and the liquid crystal display device; It includes a control unit including a power supply for supplying the power required for each of the components.

The input unit may include an input port for receiving the code information from the code generation device through communication with a code generation device capable of generating the code information.

The code may be any one of a bar code, a two-dimensional code, and a two-dimensional color code.

In addition, the security request system is characterized in that the door opening system or computer system.

The authentication unit may include: a light detection sensor for detecting a code output from the liquid crystal display in the form of light (light); An input unit for receiving various control signals from a user; A storage unit for storing program information for analyzing the authentication code and the code information inputted previously; A controller for controlling each of the components; And an interface for notifying the security request system of whether the authentication is approved under the control of the controller.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration of an embodiment of a security device using a liquid crystal display device according to the present invention, the security device 10 is a security that is equipped with a liquid crystal display device that can output a code, such as a bar code or two-dimensional code An authentication unit for sensing the image output from the liquid crystal display of the key 60 and the security key to determine whether to authenticate the security key, and then to approve the authority of the security request system 40 according to the determination information. 30) is configured to include.

First, the security key 60 will be described with reference to the drawings.

That is, as shown in the figure, the security key 60 applied to the present invention receives various control signals (open / close signal or use approval request signal, etc.) from the user or authenticates the code from an apparatus (not shown). An input unit 21 for receiving code information for input, a storage unit 22 for storing code information transmitted from the input unit and various driving program information, the components (input unit, storage unit) and the liquid crystal display device. Control unit 20 and control unit including a controller 25 for controlling the operation, a power supply 23 for supplying the power required for each of the components (input, storage, controller) According to the present invention, a liquid crystal display device 50 for outputting the code is included.

The input unit 21 is for receiving a control signal for outputting the code through the liquid crystal display, and may be configured in the form of a button. In addition, the input unit 21 may include a universal serial bus (Universal Serial Bus) port which is currently widely used to receive code information from the code generator. In addition to the USB, other devices capable of communicating with the code generating device capable of producing the code may be used. In this case, a personal computer (PC) or a personal digital assistant (PDA) may be used as the code generator. However, the present invention is not limited thereto, and thus, information for generating the code may be directly input through the function of the input unit 21. That is, the input port 21 includes a plurality of buttons and screens necessary for code generation, and in the case of the security key 60 configured to input code information directly through the input device, the USB port as described above. Etc. need not be provided. However, in order to generate a code by itself in the security key 60 as described above, the volume of the security key 60 itself and the function of the controller 25 should be excellent, so that code information generated by an external code generation device may be used. It is preferable to be provided through the input unit 21.

The storage unit 22 stores a program for driving the security key itself, and stores the code information input through the input unit.

On the other hand, the liquid crystal display device 50 is a device that can output a variety of characters or figures through the liquid crystal panel (Liquid Crystal Pannel), in the present invention (Bar code, two-dimensional code, two-dimensional color code, etc.) In order to output the code of, the description thereof will be described with reference to FIG. 3 below.

Next, the authentication unit 30 will be described with reference to the drawings.

That is, as shown in the figure, the authentication unit 30 applied to the present invention includes a light sensor 36 for detecting a code output from the liquid crystal display in the form of light (light), and various controls from a user. An input unit 31 for receiving a signal, a storage unit 32 for storing program information for analyzing the authentication code, pre-input code information, and the like, a controller 35 for controlling the respective components; And an interface 39 for notifying the security request system 40 of whether the authentication is approved or not under the control of the controller.

The photosensitive sensor 36 is a sensor capable of detecting an authentication code output from the liquid crystal display, and various types of sensors currently widely used, such as a charge coupled device (CCD), may be used. Can be.

The input unit 31 is a device for the user of the security device 10 using the liquid crystal display device to input various information required for the authentication unit 30 is configured in the form of various buttons, to analyze the authentication code It may be configured to include an interface for receiving an authentication program for receiving or an interface for receiving the authentication code information.

The storage unit 32 stores a variety of information input through the input unit.

On the other hand, the security request system 40 refers to a system that is approved for use in accordance with whether or not authentication in the security device using the liquid crystal display device, the most common use can be applied to the opening and closing system such as doors.

That is, the security request system 40 is composed of a drive device for driving the opening and closing system and the opening and closing device accordingly, so that the code output from the liquid crystal display device 50 of the security key 60 is the authentication When it is authenticated with a code allowed to be used in the unit 30, the driving device may be configured to open and close the opening and closing device according to a control signal transmitted from the controller 35 through the interface 33. .

The security request system 40 may also be a computer system for managing various documents. That is, the computer system 40 may be configured such that its use can be approved by the user who uses the security key 60 according to whether the authentication unit 30 is approved.

2 is a diagram illustrating an external configuration of the security key 60 shown in FIG. 1 as an external configuration diagram of a security key applied to the present invention.

That is, as shown in FIG. 2, the security key 60 includes a liquid crystal display device 50 for outputting a code 90 for authentication, a button 26 for receiving a control signal from a user, and a code generation. It includes an input port 27 for receiving the code information from the device and a frame 28 for mounting the respective components.

The button 26 is a component included in the input unit 21 of the security key described with reference to FIG. 1, but only one button is illustrated in FIG. 2, but in some cases, the button 26 may include a plurality of buttons. That is, the security key 60 may include a button for generating a door opening control signal and a button for generating a door closing control signal, and the like, and the security key 60 directly generates code information. When configured to store, buttons for various purposes for generating code information may be provided.

The input port 27 is also a component included in the input unit 21 of the security key described in FIG. 1, and the input port 27 is an interface for receiving authentication code information generated from the code generation device. In this case, a USB port may be applied as described above.

In FIG. 2, a two-dimensional code is output to the liquid crystal display device 50, but the present invention is not limited thereto. Therefore, the liquid crystal display device 50 has a function of the liquid crystal display device. Accordingly, at least one code 90 of a bar code, a two-dimensional code, or a two-dimensional color code may be output.

3 is an internal configuration diagram of a liquid crystal display device applied to the present invention, and shows a circuit configuration of the liquid crystal display device 50 shown in FIG.

The liquid crystal display (LCD) 50 is an apparatus for displaying an image by adjusting the light transmittance of a liquid crystal having dielectric anisotropy using an electric field. To this end, the liquid crystal display includes a liquid crystal panel having a pixel matrix, and a liquid crystal panel. A driver for driving is provided.

That is, the liquid crystal display includes a liquid crystal panel 51 having a pixel matrix as shown in FIG. 3, a gate driver 52 for driving gate lines GL1 to GLn of the liquid crystal panel, and data of the liquid crystal panel. The data driver 53 for driving the lines DL1 to DLm, the timing controller 54 for controlling the driving timing of the gate driver and the data driver, and the driving voltages VDD and VGH required by the components. And a power supply unit 55 for supplying VGL). Although not shown in the drawing, the liquid crystal display device 50 further includes a backlight unit including a light source for generating light irradiated onto the liquid crystal panel, and the power supply unit 55 is adapted to drive the light source. You can also supply the necessary power. At this time, various control signals for controlling the timing controller 54 and the power supplied to the power supply unit 55 are transmitted through the controller 25 and the power supply unit 24 of the control unit 20.

In the liquid crystal display device 50 having the above configuration, the liquid crystal panel 51 includes a pixel matrix composed of pixels formed at respective regions defined by intersections of the gate lines GL and the data lines DL. . In this case, each of the pixels includes a liquid crystal cell Clc for adjusting light transmittance according to a pixel signal, and thin film transistors TFT for driving the liquid crystal cell.

The thin film transistor TFT is turned on when the gate-on voltage VGH from the gate line GL is supplied to supply the pixel signal from the data line DL to the liquid crystal cell Clc. The thin film transistor TFT is turned off when the gate-off voltage VGL is supplied from the gate line GL to maintain the pixel signal charged in the liquid crystal cell.

The liquid crystal cell Clc may be equivalently represented by a capacitor, and includes a common electrode facing each other with a liquid crystal interposed therebetween and a pixel electrode connected to the thin film transistor TFT. In this case, the liquid crystal cell further includes a storage capacitor Cst so that the charged pixel signal can be stably maintained until the next pixel signal is charged. In the liquid crystal cell Clc, an array state of liquid crystals having dielectric anisotropy varies according to pixel signals charged through the thin film transistor TFT, thereby adjusting grayscale.

The gate driver 52 shifts a gate start pulse GSP from the timing controller 54 according to a gate shift clock GSC to the gate lines GL1 to GLm. The scan pulses having the gate-on voltage VGH from the power supply unit 15 are sequentially supplied. In addition, the gate driver 12 supplies the gate-off voltage VGL from the power supply unit 15 to the gate lines GL during the remaining period in which the scan pulse of the gate-on voltage VGH is not supplied. do. In addition, the gate driver 12 controls the pulse width of the scan pulse according to a gate output enable (GOE) signal from the timing controller 14.

The data driver 53 generates a sampling signal by shifting a source start pulse SSP from the timing controller 54 according to a source shift clock SSC. In addition, the data driver 13 latches the pixel data RGB input according to the SSC according to the sampling signal and supplies the data in units of lines in response to a source output enable (SOE) signal. Subsequently, the data driver 13 converts the pixel data RGB supplied in line units into an analog pixel signal using gamma voltages from a gamma voltage unit (not shown) and supplies them to the data lines DL. . At this time, the data driver 53 determines the polarity of the pixel signal in response to the polarity control (POL) signal from the timing controller 14 when converting the pixel data into the pixel signal. The data driver 53 determines an interval in which the pixel signal is supplied to the data lines DL in response to the source output enable signal SOE.

The timing controller 54 generates a GSP, GSC, GOE signal for controlling the gate driver 52, and generates an SSP, SSC, SOE, POL signal, etc. for controlling the data driver 53. In this case, the timing controller 54 may include a data enable (DE) signal, a horizontal sync signal (Hsync), a vertical sync signal (Vsync), and pixel data (RGB) indicating a valid data section input from the outside. Control signals such as the GSP, GSC, GOE, SSP, SSC, SOE, and POL are generated by using a dot clock (DCLK) for determining a transmission timing.

The power supply unit 55 generates an IC digital driving voltage, an IC analog driving voltage VDD, a gate-on voltage VGH, a gate-off voltage VGL, and the like using the input driving voltage VCC. The power supply unit 55 converts the IC digital driving voltage into the timing controller 54 and the data driver 53, the IC analog driving voltage VDD into the data driver 53, and the gate-on voltage VGH and the gate. The off voltage VGL is supplied to the gate driver 52. In addition, the power supply unit 55 generates a common voltage (not shown) which is a reference when driving the liquid crystal cell Clc of the liquid crystal panel 11 and supplies it to the common electrode. In this case, the power supply unit 55 may supply power required for the light source of the backlight unit as described above, but the liquid crystal display device applied to the present invention may be supplied to the light source through a separate power supply device in addition to the power supply unit 55. It can also supply power.

On the other hand, in the liquid crystal display device 50 having the above-described configuration, a control signal is input through the button 26 of the input unit 21 of the control unit 20 so that the controller 25 stores the storage unit 22. Transmits the code information stored in the C), and drives the data driver 53 and the gate driver 52 according to the code information so that the code can be output through the liquid crystal panel 51. do.

In this case, as described above, the code 90 may be a bar code, a two-dimensional code, or a two-dimensional color code. However, it is preferable to apply a two-dimensional code including user authentication information in more various ways, and when the liquid crystal display device 50 can implement color, it is preferable to apply a two-dimensional color code.

Meanwhile, the operating method of the security device 10 using the liquid crystal display device including the security key having the above configuration may be variously formed according to the configuration of the security key 60 and the authentication unit 30.

That is, in the method of inputting the authentication code into the security key 60, there may be a method of using the input port 27 of the input device 21 as described above, and directly authenticated through the input device 21. You can also set the code for this.

In addition, in order to analyze the code information stored in the security key 60 using the authentication program in the authentication unit 30, the code information is also stored in the storage unit 32 of the authentication unit 30 As such, various methods may be applied to the storage method.

That is, the authentication unit 30 may receive the authentication code information directly in the state in which the input unit 31 is connected to the code generation device, and store the authentication code information in the storage unit 32. The authentication code information stored in the security key 60 may be received and stored while being connected to the input device 21 of the security key 60. As another method, the authentication code information input through the optical sensor 36 may be received and stored while receiving the authentication code information input request signal from the input unit 31 of the authentication unit 30. .

On the other hand, the present invention relates to a security device using a security key that can output various codes through the screen of the liquid crystal display device as described above, the security device setting method for using the same and the authentication method using the same is currently common It can be used in various ways by applying the methods that are used as.

In addition, in the above description of the present invention, a code generating apparatus and a method for generating the code are widely used at present, and thus detailed description thereof has been omitted.

As described above, the present invention has an effect that the authentication information can be provided in various forms of codes using the liquid crystal display.

In addition, the present invention has an excellent effect that allows the user to freely change the code information for authentication.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (6)

A security key for outputting a code for authentication through the liquid crystal display; And An authentication unit for sensing the code information output from the liquid crystal display of the security key to determine whether to authenticate the security key, and then to approve the authority of the security request system according to the determination information. Security device using a liquid crystal display comprising a. The method of claim 1, The security key, A liquid crystal display for outputting the code in the form of a light source; And An input unit for receiving various control signals or code information; A storage device for storing code information transmitted from the input device and various driving program information; A controller for controlling the operation of the input device, the storage device and the liquid crystal display device; Control unit including a power supply for supplying the power required for each of the components Security device using a liquid crystal display comprising a. The method of claim 2, The input unit, And an input port for receiving the code information from the code generating device through communication with a code generating device capable of generating the code information. The method of claim 1, The code is Security device using a liquid crystal display, characterized in that any one of a bar code, two-dimensional code, two-dimensional color code. The method of claim 1, The security request system is a security device using a liquid crystal display, characterized in that the door opening system or computer system. The method of claim 1, The authentication unit, A photo sensor for sensing a code output from the liquid crystal display in the form of light (light); An input unit for receiving various control signals from a user; A storage unit for storing program information for analyzing the authentication code and the code information inputted previously; A controller for controlling each of the components; And An interface for notifying the security request system of authentication approval according to the control of the controller Security device using a liquid crystal display comprising a.

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