KR200304869Y1 - Apparatus For Inquiring Credit Card Using Wireless LAN And Wireless Bridge For Bridging Inquiring Credit Card - Google Patents

Abstract

The present invention relates to an access point expander and a wireless LAN credit card lookup machine coupled with a VAN server and a card company server through a network via an access point, and transmits credit card information to the access point expander, and credits from the access point expander. Wireless LAN card unit for receiving card transaction approval information, a card reader for reading the credit card and transmitting the read credit card information to the wireless LAN card unit, receiving and outputting the credit card transaction approval information from the WLAN card unit And a medium conversion unit for performing physical signal matching processing between the WLAN card unit and the card reader.

Description

Apparatus For Inquiring Credit Card Using Wireless LAN And Wireless Bridge For Bridging Inquiring Credit Card}

The present invention relates to a wireless LAN credit card querying machine and an access point expander for credit card inquiry using a wireless LAN, and more particularly, an access point expander and a media conversion unit for applying a wireless LAN method to a credit card inquiry system. The present invention relates to a wireless LAN credit card inquiry machine and an access point expander for credit card inquiry using a wireless LAN capable of enabling a high speed credit card inquiry processing at a lower cost.

Currently, credit cards are widely used as a means of payment for the purchase of goods or the use of services due to the convenience of use and the convenience of portability, and the government strongly recommends the use of credit cards to maintain a transparent commerce order. It is true.

As the number of credit card users is increasing, damages caused by insolvent traders and fraudsters are occurring. To prevent this, card companies use a card checker to check the credit status of a payer when using a card.

1 is a configuration diagram of a credit card inquiry system using a conventional wired method.

Referring to FIG. 1, when the credit card terminal 17 reads the credit card information and transmits the credit card information to the VAN server 10 through the wired network and the core network 13 including the general telephone network 21 or the dedicated network 23, The VAN server 10 transmits the received credit card information to the card company server 15 to receive the credit card transaction approval information and transmits the credit card transaction approval information to the credit card terminal 17 to perform a credit card inquiry.

However, in the case of the general telephone network 21 as described above, the access time for the service takes a long time, and the voice service becomes impossible as it occupies the general telephone network 21 used in the use of the service. In addition to the charge, there is a problem in that the economic burden of the affiliate store is increased by being charged a separate telephone charge.

In addition, according to the dedicated network 23, there is an advantage that can be a high-speed inquiry, accordingly has a problem that the maintenance cost is high.

2 is a block diagram of a conventional credit card inquiry system using a wireless method.

In the wireless credit card inquiry system, the credit card information read from the credit card terminal 17 is transmitted to the VAN server 10 through the core network 13 through the PCS repeater 19 through the wireless network 25. Will be.

However, by the wireless network 25, there is an advantage that the installation and mobility is excellent, but still has a problem that a lot of usage fees are required.

Accordingly, there is an increasing demand for a credit card inquiry system capable of overcoming such a conventional credit card inquiry system and enabling cheap and high speed credit card inquiry.

The present invention has been made to solve the above problems, the first object of the present invention is to provide an access point expander and a medium conversion unit for applying a wireless LAN method to a credit card inquiry system at a high cost at a lower cost It is to provide a wireless LAN credit card query and an access point expander for credit card query using a wireless LAN that can enable credit card inquiry processing of.

A second object of the present invention is to provide a credit card inquiry by a wireless LAN method while using a conventional credit card terminal function by providing an interface unit converted into a conventional credit card terminal, a wireless LAN card unit and a media conversion unit. It is to provide a wireless LAN credit card query and an access point expander for credit card inquiry using a wireless LAN.

1 is a configuration diagram of a credit card inquiry system using a conventional wired method;

2 is a configuration diagram of a credit card inquiry system using a conventional wireless method;

3 is a configuration diagram of a credit card inquiry system using a wireless LAN according to the present invention;

4 is a block diagram showing an internal configuration of an access point expander according to the present invention;

5 is a block diagram showing the internal configuration of a wireless LAN credit card query device according to the present invention,

6 is a block diagram showing an internal configuration of a wireless LAN card of FIG. 5;

7 is a block diagram illustrating an internal configuration of a media converter of FIG. 5;

8 is a block diagram showing the internal configuration of the card reader of FIG.

9 is a flowchart illustrating a process of performing a credit card inquiry in a WLAN credit card query according to the present invention;

10 is a flowchart illustrating a process of performing a credit card inquiry relay in an access point expander according to the present invention.

<Brief description of the major reference numerals>

30: VAN server, 33: core network,

35: card company server, 41: access point,

50: access point expander, 60: wireless LAN credit card inquiry,

61: antenna, 63: wireless LAN card unit,

65: medium conversion unit, 65-1, 65-9: physical layer connection unit,

65-3: storage unit, 65-5: control unit,

65-7: operation unit, 67: card reader.

According to a first aspect of the present invention for achieving the above object, in the WLAN credit card inquiry machine coupled to the VAN server and card company server through the network via the access point expander and access point, the access point expander WLAN card unit for transmitting credit card information and receiving credit card transaction approval information from the access point expander-The credit card information is transmitted to a VAN server and a card company server via an access point, and the credit card transaction approval information Is received from a VAN server and a card company server via an access point, reads a credit card and transmits the read credit card information to the WLAN card unit, and receives and outputs credit card transaction approval information from the WLAN card unit. A card reader and the wireless LAN card unit and the card reader Groups of matching physical signal processing performed to the media conversion WiFi WLAN credit inquiry with characterized in that it comprises parts for can be provided.

According to a second aspect of the present invention for achieving the above object, in the access point expander for credit card inquiry coupled to the access point and a plurality of wireless LAN credit card query to connect the access point and WLAN credit card query And a wireless LAN card unit for transmitting and receiving data wirelessly with the access point and the plurality of WLAN credit card inquiry machines, a wired LAN unit for transmitting and receiving data with the access point over a wire, and a card company server at a remote location via a general telephone network. Modem unit for transmitting and receiving, a drive module, a private IP generation module, an address conversion module, a storage unit for storing the data matching processing module, a power supply unit for supplying power for driving the access point expander and the wireless LAN card unit, the Control the wired LAN unit, the modem unit, the storage unit and the power supply unit It is connected to the WLAN credit card inquiry, and drives the modules stored in the fraud storage unit to perform physical signal matching processing and network address assignment and conversion functions of the access point and the plurality of WLAN credit card inquiry periods. An access point expander for credit card inquiry including a control unit may be provided.

Other objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

Hereinafter, with reference to the accompanying drawings to describe the embodiment of the present invention in detail.

3 is a block diagram of a credit card inquiry system using a wireless LAN according to the present invention.

As shown in Figure 3, the credit card inquiry system using a wireless LAN according to the present invention is largely a plurality of wireless LAN credit card terminal 60, access point expander 50, access point 41, VAN server 30 ), The card company server 35.

The wireless LAN credit card inquiry device 60 reads a credit card and transmits credit card information by a wireless LAN method, and receives and displays and outputs credit card transaction approval information, which will be described in detail with reference to FIG. 5. Shall be.

The access point expander 50 is coupled to the access point 41 and the plurality of wireless LAN credit card inquiries 60 to connect the access point 41 and the wireless LAN credit card inquiring device 60. It will be described in detail in FIG.

The access point 41 is for connecting a wired network and a wireless network, and the access point expander 50 is combined with a wireless network based on a wireless LAN method or a wired network based on a wired LAN method, and includes a VAN server 30 and a card company server ( 35) is connected via a core network 33, which is a wired network, through an xDSL 39 and a DSL subscriber multiplexing device (DSLAM) 37.

The VAN server 30 receives the credit card information through the core network 33, transmits it to the card company server 35, and then receives the credit card transaction approval information from the card company server 35 to receive the core network 33. And it is for transmitting to the wireless LAN credit card inquiry machine 60 through a wireless or wired network.

The card company server 35 receives credit card information from the VAN server 30 and compares the data with the data stored in the customer database to generate credit card transaction approval information and transmit the credit card transaction approval information to the VAN server 35.

Referring to FIG. 3, when the user has a plurality of WLAN credit card lookups 60, the plurality of WLAN credit card lookups 60 is connected to the access point 41 through the access point expander 50. Is connected to, but in the case of one WLAN credit card query 60 is connected directly to the access point 41, not through the access point expander 50.

4 is a block diagram showing an internal configuration of an access point expander 50 according to the present invention.

As shown in FIG. 4, the access point expander 50 according to the present invention includes a wireless LAN card unit 50-1 and 50-2, a wired LAN unit 50-6, a modem unit 50-7, and a storage unit. 50-3, the power supply unit 50-4, and the control unit 50-5.

The wireless LAN card unit 50-1 and 50-2 may include a wireless LAN card 50-2 and a plurality of wireless LAN credit card inquiry machines 60 for the purpose of wirelessly transmitting and receiving data with the access point 41. It consists of a wireless LAN card 50-1 for transmitting and receiving data wirelessly.

The wired LAN unit 50-6 is for transmitting and receiving data with the access point 41 by wire, and is configured with a 10 / 100BaseT Ethernet port. That is, the wired LAN unit 50-6 may be used to back up the normal data transmission / reception if it is impossible to wirelessly transmit or receive data due to a failure of the WLAN card 50-1.

The modem unit 50-7 is for enabling processing using a telephone network, and a dial-up modem using a general telephone network can be used. The modem unit 50-7 is to provide a more reliable service by enabling a credit card inquiry service through a general telephone network in the event of an abnormality in a wireless LAN or a wired LAN system.

The storage unit 50-3 stores a driving module for driving the access point expander 50, a private IP generation module, an address conversion module, a data matching processing module, and the like for the plurality of WLAN credit card lookups 60. It consists of a nonvolatile memory such as a ROM and a flash memory, and a volatile memory such as a RAM for loading each module when the module is executed.

The power supply unit 50-4 is for supplying DC power to each component of the access point expander 50.

The controller 50-5 is a wireless LAN card unit 50-1, 50-2, a wired LAN unit 50-6, a Moden unit 50-7, a storage unit 50-3 and a power unit 50-4. ), And performs a physical signal matching process and network address generation and conversion function between the access point 41 and the plurality of WLAN credit card inquiries 60. The controller 50-5 is connected to the wireless LAN card units 50-1 and 50-2 via a PCMCIA interface. The PCMCIA (Personal Computer Memory Card International Association) is a credit card sized memory or input / output for use in a notebook computer. Created as a standard for devices, it is commonly used as an interface for WLAN cards. In addition, the controller 50-5 generates a private IP by driving a private IP generation module stored in the storage 50-3, thereby communicating with the plurality of WLAN credit card lookup devices 60 using only one public IP. This enables a function and a function to translate addresses.

Figure 5 is a block diagram showing the internal configuration of a wireless LAN credit card query 60 according to the present invention. As shown in FIG. 5, the WLAN credit card inquiry machine 60 according to the present invention is largely composed of a WLAN card unit 63, a medium conversion unit 65, and a card reader 67.

The WLAN card unit 63 transmits credit card information to the access point expander 50 and receives credit card transaction approval information from the access point expander, which will be described in detail with reference to FIG. 6.

The card reader 67 reads a credit card and transmits the read credit card information to the WLAN card unit, and receives and outputs credit card transaction approval information from the WLAN card unit, which will be described in detail with reference to FIG. 7. Let's do it.

The media conversion unit 65 is a portion for performing physical signal matching processing between the WLAN card unit 63 and the card reader 67. The medium conversion unit 65 interconnects the IEEE 802.11b WLAN card unit and the UART portion of the card reader. The medium conversion unit 65 will be described in detail with reference to FIG.

FIG. 6 is a block diagram illustrating an internal configuration of the WLAN card unit 63 of FIG. 5. As shown in FIG. 6, the WLAN card unit 63 includes an RF amplifier 63-1, a frequency converter 63-3, a modulator demodulator 63-5, and a base signal processor 63-7. And a physical layer connection portion 63-9.

The RF amplifying unit 63-1 is for amplifying an RF signal. When the RF amplifying unit 63-1 transmits a signal from the WLAN card unit 63 to the access point expander 50, the RF amplifying unit 63-1 transmits the signal converted into the RF signal to propagate the space. A power amplifier PA is used to amplify the power of the signal to be used, and when a signal is received from the access point expander 50, a low noise amplifier LNA is used to amplify the received high frequency signal without noise. The RF amplifier 63-1 is coupled to the antenna 61.

The frequency converter 63-3 is used to perform a signal conversion between the RF signal and the IF signal, and the RF signal 2412 ˜ 2472 received from the access point expander 50 and amplified by the RF amplifier 63-1. It converts an MHz signal into an IF signal (about 374 MHz), and converts an IF signal (about 374 MHz) into an RF signal (2412 to 2472 MHz) when transmitting a signal to the access point expander 50.

The modulation / demodulation unit 63-5 is to load a digital signal, which is a base signal, on a carrier wave, which is an IF analog signal, or perform the reverse process. Convert to

The base signal processor 63-7 spreads or despreads a digital signal which is a base signal. The base signal processor 63-7 spreads and spreads information in a wide frequency region using a spread coding technique.

The physical layer connection unit 63-9 is for physically connecting the WLAN card unit 63-1 and the media conversion unit 65, and processes the PCMCIA type interface. The MAC layer (not shown) of the physical layer connection unit 63-9 is equipped with a protocol for processing in accordance with a communication protocol for a wireless LAN service and functions to control normal wireless LAN service. Are very diverse and may need to be adjusted accordingly. The typical functions of the MAC layer include power management functions to reduce power consumption and complementary algorithms. The service structures include an infrastructure structure in the form of a centralized control method and an ad-hoc structure for direct communication between terminals.

FIG. 7 is a block diagram showing an internal configuration of the media converter 65 of FIG. As shown in FIG. 7, the media conversion unit 65 includes a physical layer connection unit 65-1 and 65-9, a storage unit 65-3, a control unit 65-5, and an operation unit 65-7. Consists of

The physical layer connection units 65-1 and 65-9 are for physically connecting the WLAN card unit 63, the card reader 67, and the media conversion unit 65, and the connection unit with the WLAN card unit 63. It is provided in the connection part with the card reader 67, respectively.

The storage unit 65-3 stores a driving module and a signal matching module for driving the media converter, and includes a nonvolatile memory for storing the modules and a volatile memory for loading the modules when the module is driven. have.

The control unit 65-5 controls the operations of the physical layer connection units 65-1 and 65-9 and the storage unit 65-3, and drives the signal matching module stored in the storage unit 65-3. A process for matching the format of the physical signal transmitted and received between the WLAN card unit 63 and the card reader 67 is performed.

In general, the interface of a WLAN card is PCMCIA, and in the case of a card reader, serial communication is generally used. In this case, in order to provide a wireless network service using a card reader, the control unit 65-5 performs a function of converting PCMCIA into serial communication and serial communication into PCMCIA. That is, a function of matching a physical signal format and a protocol for physical connection between the card reader unit and the WLAN card unit is performed.

The operation unit 65-7 provides a dynamic IP to the upgrade module for upgrading the drive module, the TCP / IP support module for enabling credit card inquiry through wired and wireless networks, the telnet application module, and the WLAN credit card inquiry machine. This section provides the DHCP client module to support.

FIG. 8 is a block diagram showing an internal configuration of the card reader 67 of FIG. As shown in Fig. 8, the card reader 67 includes an output section 67-3, a display section 67-5, a card reading section 67-7, a key input section 67-9 and a control section 67-. It consists of 1).

The output unit 67-3 is a portion for outputting information such as credit card transaction approval information, an installment period, payment price, etc. received from the VAN server 30, and a dot printer, a laser printer, or the like is mainly used.

The display unit 67-5 displays the credit card transaction approval information received from the VAN server 30 on a screen so that the credit card holder can check information such as whether the credit card transaction has been approved, the payment period, and the payment amount. Display elements such as CRT, LCD, and EL are used.

The card reader 67-7 reads the credit card information recorded on the credit card. The card reader 67-7 reads the magnetic band portion of the credit card to read information on the credit card holder.

The key input unit 67-9 is for inputting payment price and installment amount information. A keyboard or the like is used a lot, but a touch screen or the like may be used.

The control unit 67-1 is for controlling the constituent means, and converts the credit card information read out from the card reading unit 67-7 and the payment price and the installment period information input through the key input unit 67-9. An output unit 67-3 and a display unit 67- generate a command signal for transmitting to the unit 65, and display and output a control command signal for displaying and outputting credit card transaction approval information received from the media conversion unit 65. 5) to send.

9 is a flowchart illustrating a process of performing a credit card inquiry in the WLAN credit card inquiry device 60 according to the present invention.

First, when a user swipes a credit card on the card reader 67-7 of the wireless LAN credit card inquiry 60 provided in the credit card merchant, the credit card information is read, and the read credit card information is controlled by the controller 67-1. Is transmitted to the medium conversion unit 65 by the control signal (S10). In addition, the payment price and the installment period information input through the key input unit 67-9 are also transmitted to the medium converting unit 65.

Next, the medium conversion unit 65 converts the received credit card information into a physical signal format that can be processed by the WLAN card unit 63 (S20). That is, the credit card information of the serial data format is changed into the PCMCIA data format so that the WLAN card unit 63 can process the credit card information.

Next, the WLAN card unit 63 converts the converted credit card information into an RF signal and transmits the converted credit card information to the access point expander 50 (S30 and S40). As described above, the WLAN card unit 63 transmits credit card information in the RF signal format to the access point expander 50 through digital data spreading, modulation, RF frequency conversion, and RF signal amplification.

Credit card information transmitted to the access point expander 50 is transmitted to the VAN server 30 and the card company server 35 via the access point 41 (S50).

The access point expander 50 receives the credit card transaction approval information from the card company server via the VAN company server via the access point (S60).

The received credit card transaction approval information is transmitted from the access point expander 50 to the wireless LAN card unit 63 of the wireless LAN credit card query 60 (S70).

Next, the WLAN card unit 63 receives credit card transaction approval information from the access point expander 50 and converts the received credit card transaction approval information into digital data (S80). RF signal low noise amplification, IF frequency conversion, demodulation, and digital data despreading process transmit credit card transaction authorization information in digital data format.

Next, the media conversion unit 65 converts the credit card transaction approval information received from the WLAN card unit 63 into a physical signal format that can be processed by the card reader 67 (S90). That is, the credit card transaction authorization information in the PCMCIA data format is converted into the serial data format so that the card reader 67 can process it.

Thereafter, the card reader 67 receives, displays and outputs the converted credit card transaction approval information (S100). That is, the credit card transaction approval information, payment price, and installment period information are output as slips through the output unit 67-3, and are output to the screen through the display unit 67-5 so that the credit card holder can check them.

10 is a flowchart illustrating a process of performing a credit card inquiry relay in the access point expander 50 according to the present invention.

First, the access point expander 50 connects the WLAN credit card inquiry machine 60 with the access request to the access point 41 (S110 to S140). The access point 41 allows the access point expander 50 to have a public IP address through the IEEE802.1x authentication function, and the access point expander 50 again uses the wireless LAN credit card inquiry ( 60) by assigning a private IP address through DHCP to enable communication with a plurality of wireless LAN credit card inquiry machine 60 with one public IP.

Then, the credit card information is received from the wireless LAN credit card inquiry (60) (S150).

Then, the received credit card information is converted into a physical signal format that can be processed in the access point 41 (S160). That is, the controller 50-5 in the access point expander 50 drives the signal matching module to convert the data into a data format that can be processed by the access point 41 through an address conversion process.

Next, the controller 50-5 transmits the converted credit card information to the access point 41 (S170). That is, credit card information that has undergone address conversion is transmitted to the access point 41 through the WLAN card unit 50-1.

Then, the credit card information is transmitted to the VAN server 30 and the card company server 35 (S180).

Then, the credit card transaction approval information received from the card company server through the VAN company server is received (S190, S200).

Next, the controller 50-5 converts the received credit card transaction approval information into a physical signal format that can be processed by the WLAN card unit 63 of the WLAN credit card inquiry 60 (S210). That is, the credit card transaction approval information is converted into a data format that can be processed by the WLAN card unit 63 through an addressing function.

Thereafter, the converted credit card transaction approval information is transmitted to the WLAN credit card inquiry (S220).

Finally, the wireless LAN credit card inquiry 60 displays and outputs the received credit card transaction approval information (S230).

Although this embodiment has been illustrated and described with reference to a wireless LAN credit card lookup only, the present invention is not limited to this, in addition, it is of course possible to apply to a variety of terminals that can be adopted a wireless LAN method.

According to the wireless LAN credit card query and credit card query access point expander using the wireless LAN as described above, by providing an access point expander and a media conversion unit for applying the wireless LAN method to the credit card query system, a lower cost As a result, it is possible to enable a high speed credit card inquiry processing.

In addition, by providing a wireless card and a media conversion unit in the function of the conventional credit card terminal, it is possible to enable credit card inquiry by the wireless LAN method with minimal modification to the conventional credit card terminal.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will include such modifications and variations as fall within the spirit of the present invention.

Claims (6)

In the WLAN credit card inquiry machine coupled with the VAN server and card company server through the network via the access point expander and access point, The wireless LAN card unit that transmits credit card information to the access point expander and receives credit card transaction approval information from the access point expander—The credit card information is transmitted to a VAN server and a card company server via an access point. Credit card transaction authorization information is received from the VAN server and the card company server via the access point; A card reader for reading the credit card and transmitting the read credit card information to the WLAN card unit, receiving and outputting credit card transaction approval information from the WLAN card unit; And A medium conversion unit for performing physical signal matching processing between the WLAN card unit and the card reader WLAN credit card query using a wireless LAN, characterized in that it comprises a. The method of claim 1, The WLAN card unit An RF amplifier for amplifying the RF signal; A frequency converter for performing signal conversion between the RF signal and the IF signal; A modulation / demodulator for performing signal conversion between the digital data and the IF signal; A base signal processor for spreading or despreading the digital data; And And a physical layer connection unit for physically connecting the WLAN card unit and the medium conversion unit. WLAN credit card query using a wireless LAN, characterized in that. The method of claim 1, The media converter A physical layer connection unit for physically connecting the WLAN card unit and the medium conversion unit, wherein the physical layer connection unit is provided in a connection unit with the WLAN card unit and a connection unit with the card reader, respectively; A storage unit in which a driving module for driving the medium conversion unit is stored; And And a controller configured to control operations of the physical layer connection unit and the storage unit, and to perform a process for matching a format of a physical signal transmitted and received between the WLAN card unit and a card reader. WLAN credit card query using a wireless LAN, characterized in that. The method of claim 3, wherein The media conversion unit further includes an operation unit, The operation unit An upgrade module for upgrading the drive module, TCP / IP support module for enabling credit card inquiry through wired and wireless networks, Telnet application module and Including at least one of a DHCP client module for supporting dynamic IP in the WLAN credit card WLAN credit card query using a wireless LAN, characterized in that. The method of claim 1, The card reader An output unit for outputting the credit card transaction approval information; A display unit for displaying the credit card transaction approval information; A card reader for reading credit card information recorded in a credit card; A key input unit for inputting the price information and the installment amount information; And Comprising a control unit for controlling the constituent means WLAN credit card query using a wireless LAN, characterized in that. In the access point expander for credit card inquiry coupled to the access point and a plurality of wireless LAN credit card query, connecting the access point and the WLAN credit card query, A wireless LAN card unit for wirelessly transmitting and receiving data to and from the access point and the plurality of wireless LAN credit card inquiry devices; Wired LAN unit for transmitting and receiving data with the access point by wire: A modem unit for transmitting and receiving data with a card company server at a remote location through a wired network; A storage unit for storing a driving module, a signal matching module, and an addressing and converting module for driving the access point expander; A power supply unit supplying power for driving the access point expander; And The wireless LAN card unit, the wired LAN unit, the modem unit, the storage unit and the power supply unit controls the access point and the access point and the module stored in the fraud storage unit connected to the wireless LAN credit card inquiry, the access point and the And a control unit for performing physical signal matching processing and network address assignment and conversion functions of a plurality of WLAN credit card inquiry periods. Access point expander for credit card query characterized in that.