KR100915891B1 - Wireless modem having sign pad as one body and control method - Google Patents

Abstract

The present invention is provided with a sign pad integrally in a wireless modem for performing the preceding call (Call), it is possible to easily and easily build a wireless card authentication system, the sign pad integrated wireless modem that can exhibit a high-speed approval processing speed And a control method.

The sign pad integrated wireless modem of the present invention mounts the wireless modem module 150 and the wireless circuit inside the modem case so as to communicate wirelessly between the card terminal 20 and the van server 40, but not in the communication standard of the card terminal. A corresponding data cable connection interface unit 130; A data conversion unit 140 for transmitting the communication signal and data received through the interface unit to the wireless modem module unit 150; A microcomputer 110 in charge of general operation control of a wireless circuit; A power supply unit 120 for providing an operating power source for the wireless circuit component including the microcomputer; A timer 180 installed in the microcomputer; A sign pad 190 connected to the microcomputer to generate a sign image; Keypad 170 is connected to the microcomputer to generate a pin number; and performs the preceding call setup transmission.

Card, terminal, wireless modem, ban server, call setup, sign pad

Description

Wireless modem with integrated sign pad and control method {Wireless modem having sign pad as one body and control method}

1 is a block diagram illustrating a card transaction approval method according to the prior art.

2 is a network diagram of a sign pad integrated wireless modem according to an embodiment of the present invention.

3 is a plan view of the sine pad integrated wireless modem shown in FIG.

4 is a block diagram showing the configuration and connection of the sign pad integrated wireless modem shown in FIG. 2 and a card terminal.

FIG. 5 is an information flowchart for describing a method of controlling the wireless modem shown in FIG. 2.

             <Description of the symbols for the main parts of the drawings>

10: card 20: card terminal

30: wireless network 31: wireless network infrastructure

40: ban server 50: data cable

100 Example 110 Microcomputer

120: power supply unit 130: interface unit

140: data conversion unit 150: wireless modem module unit

160: antenna unit 170: keypad

180: timer 190: sign pad

The present invention relates to a sign pad integrated wireless modem and a control method for realizing a wireless environment by interworking with a wired card terminal (CAT), a card payment machine, a card inquiry machine, and the like.

In general, a wireless modem refers to a device that converts a digital signal into an analog signal so that it can be transmitted through a wireless network, that is, modulates and converts an incoming analog signal into a digital signal, that is, a demodulator.

On the other hand, financial services such as inquiry or payment of credit card, check card, debit card, credit card and cash receipt or check are not directly communicated with financial institutions such as credit card companies, banks, etc. by using value added network (VAN) infrastructure. If you do not have it through a bansa with VAN infrastructure.

For example, Bansa's business uses a credit or debit card system in a value-added communication network (VAN), allowing card users (consumers) to use card payment machines or card transaction approval checkers, such as CAT, which are available at card merchants. (Hereinafter referred to as the 'card terminal') by providing credit transactions through a stable transaction, by providing a stable sales of the merchants, through this operating fee from the merchants (ban fee, data communication Channel usage fees).

The card transaction approval method through the bansa according to the prior art is understood as shown in FIG.

The user is a card holder having a card 1 issued from a financial institution such as a credit card company.

The affiliated store has a normal card terminal 2 configured to connect to a predetermined bansa and transmit the professional request or the professional approval, which is payment information.

Here, the card terminal 2 of the affiliated store and the relay system 4 of Bansa are connected to a predetermined network 3 such as a wireless network, a mobile communication network, a public network (PSTN), an internet network, and the like. In addition, the relay system 4 and the transaction approval system 5 of the financial institution are connected by a packet network or a dedicated network.

The user makes a purchase request while presenting his or her card 1 at a merchant to pay for goods or services. The merchant uses the card terminal 2 to request or fulfill a request from the financial institution. At this time, the card terminal 2 reads the user's card 1, reads the user information contained in the card, and then reads the transaction history information and the merchant information generated by the card terminal 2. It is combined with one user information and a corresponding transaction approval request text is prepared.

Referring to the case of the public network (PSTN) as a reference, when the card terminal 2 receives a signal for pressing the input button of the card terminal 2, the card terminal 2 connects to the Bansa relay system 4 through the network network 3. And establishes a physical line (eg, a session) between the Bansa relay system 4 and the card terminal 2.

In this case, the transaction approval request message (combination of user information, transaction history information and merchant information) generated from the card terminal 2 of the merchant is transmitted to the Bansa relay system 4 via the physical line.

Bansa's relay system (4) receiving the transaction approval request text reads the card company information contained in the user information in the transaction approval request text for application, and converts the protocol according to the format of the financial institution. The approval system 5 sends a combination of data related to the transaction approval application.

The transaction approval system 5 receiving the transaction compares the user information, transaction history, and merchant information included in the combination of data related to the transaction approval application with the member data or the merchant data, respectively, so that both the user and the merchant as a transaction member. There are no reasons for disqualification and the validity of transactions between them is verified.

Thereafter, the transaction approval system 5 of the financial institution returns the approval information corresponding to the transaction approval application result to the relay system 4 through a dedicated network. The relay system 4 stores the authorization information and returns it to the corresponding card terminal 2 of the affiliated store.

As a result, the card terminal 2 outputs the payment result as a card receipt based on the returned authorization information, and terminates the connection with the Bansa relay system 4.

However, the card terminal 2 according to the related art has problems such as the card inquiry processing speed and the communication fee according to the existing communication method as shown in [Table 1].

For example, the PSTN wired method corresponding to the conventional public network has a disadvantage in that the approval process is performed through general dial-up dialing, which is very slow, and the communication cost is excessively charged in the case of an affiliate store having a high frequency of card transactions.

In addition, the conventional method using the ADSL wired Internet can be used only in an environment where a wired telephone line or an internet line is always connected, and although the approval processing speed is faster than that of the PSTN wired method, a relatively expensive communication cost is required every month. Has disadvantages.

In addition, the conventional method using a dedicated wireless terminal adopts a thermal transfer method that has a problem in storing a document, and is much more expensive than a general wired card terminal, has a relatively low approval processing speed, and reduces communication dropped from a wireless base station. It is not possible to use in the province, and there is a time delay such as call setup due to the use of the wireless network, which is used only in a visiting sales company.

On the other hand, the applicant has attempted to use the existing conventional external wireless modem to the wired card terminal, in addition to the existing dedicated wireless terminal.

Existing conventional external wireless modems have been recently developed for CDMA 2000 1X as well as IS-95B in their technical specifications, which are relatively expensive but have a low possibility of physical disconnection, and can be used at any time without a mobile terminal. This is because the presenter has presented to the present applicant the expectation that the connection may exceed the limit of the place compared to the wire.

However, the external wireless modem does not have a configuration or method that can be interlocked with the card terminal for wired connection provided in the merchant. That is, the external wireless modem has an absolute disadvantage in that it does not exhibit the desired high-speed authorization processing speed at the affiliate store due to its call setup and network access characteristics, and thus encounters fundamental limitations of the CDMA mobile communication network itself.

Nevertheless, the Applicants endeavor, after connecting the conventional external wireless modem and the card terminal with the data cable of the corresponding communication standard, the internal control signal of the card terminal and the communication control signal of the external wireless modem to match the card The attempt was made to complete the approval process.

The card terminal reads the user's card, reads the user information contained in the card, and combines the transaction history information generated by the card terminal with the merchant information with the read user information.

The preparation of the transaction approval request preamble takes 3 to 7 seconds.

Thereafter, corresponding to the pressing of the input button, the card terminal transmits the written transaction approval request text to the wireless modem.

Based on the time point at which the full message is received, the wireless modem is transmitted through a CDMA mobile communication network or a wireless network, using PPP (Point-to-Point Protocol) and TIP / IP (TCP / IP: Transmission Control Protocol / Internet Protocol). Attempt to connect. The bus modem receives an acknowledgment (ACK) from the communication server of the van server or the mobile communication company and completes call setup.

This call setup process takes 5 ~ 6 seconds later than the high speed wired communication environment due to the fundamental limitation of the CDMA mobile communication network as described below.

CDMA mobile communication network (network made for the purpose of delivering voice), which is a commercially available wireless network in Korea, is used for IWF (Inter-Working Function), Packet Data Serving Node (PDSN), and GGSN (Gateway) for wireless transmission of data as well as voice. Since a wireless network interworking device such as GPRS Support Node is used for CDMA One IS 95-A, IS 95-B, and IS 95-C networks, the wireless network and the data network (IP network: Internet Protocol network) are interworked. Since the call setup time is greatly delayed, the overall approval processing speed is very slow so that it cannot be used at the affiliate store, which can be understood as the same disadvantage as the speed problem of the aforementioned dedicated wireless terminal.

As a result, the present applicant encountered a speed problem as a result of simply combining the card terminal and the external wireless modem of the prior art, and eventually failed to implement the desired wireless environment in the affiliate store.

On the other hand, the card terminal of the prior art was used to connect an external sign pad separately for the construction of a wired card terminal system, such as a wired POS terminal, a wired CAT terminal, etc. In the process, complicated cable connection and line arrangement are required, and installation space It has the disadvantage of taking up a relatively large amount.

In particular, various attempts to wirelessize a conventional wired card terminal using an external wireless modem do not solve the critical speed problem mentioned above, and thus, many problems are caused in the transmission of a sign image.

Therefore, the present invention has been made to solve the above problems, and by providing a sign pad integrally in the wireless modem for performing the preceding call (Call), it is possible to easily and easily establish a wireless card authentication system, It is a technical problem to provide a sign pad integrated wireless modem and a control method capable of exhibiting high-speed approval processing speed.

In addition, another object of the present invention is to provide a sign pad integrated wireless modem that is easy to use, install, line arrangement is connected in the form of a kit (kit) using a single data cable, without changing the function of the existing general card terminal. .

In addition, another object of the present invention is to provide a sign pad integrated wireless modem that can simultaneously achieve the effect of improving the functional processing speed and communication cost reduction.

Still another object of the present invention is to provide a sign pad integrated wireless modem that is easy to use by providing a keypad, which can perform pin number input, and further includes a pen holder for accommodating a stylus pen.

The above object of the present invention is to provide a wireless communication between a card terminal and a van server, and to connect a data cable corresponding to a communication standard of the card terminal in an external wireless modem having a wireless modem module unit and a wireless circuit installed inside a modem case. An interface unit; A data conversion unit for transmitting a communication signal and data received through the interface unit to a wireless modem module unit; A microcomputer that is in charge of general operation control of the wireless circuit; A power supply unit for providing an operating power source for a wireless circuit component including the microcomputer; A timer installed in the microcomputer to terminate the PPP connection within a preset time after terminating the TCP / IP connection by the microcomputer; A sign pad connected to the microcomputer to generate a sign image; A keypad connected to the microcomputer to generate a pin number, wherein the microcomputer is provided with a central processing unit (CPU) and a memory unit, and stored in the memory unit and accessed by the central processing unit in the card terminal. As soon as the call setup procedure is started as soon as the card is read, a call setup transmitter is further installed to operate in a bypass mode by setting up a call during the user's payment history input. Is achieved by

Furthermore, the objects of the present invention are realized by a control method relating to prior call setup.

Hereinafter, a sign pad integrated wireless modem and a control method according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 to 5.

2 is a diagram illustrating a network of a sign pad integrated wireless modem according to an embodiment of the present invention, and FIG. 3 is a plan view of the sign pad integrated wireless modem illustrated in FIG. 2. 4 is a block diagram showing the configuration and connection relationship between the sign pad integrated wireless modem shown in FIG. 2 and a card terminal, and FIG. 5 is an information flowchart for explaining a control method of the wireless modem shown in FIG.

As shown in Figure 2, the embodiment 100 of the sign pad integrated wireless modem of the present invention using a data cable 50 of the communication standard, a wired card transaction approval inquiry machine, that is, a wired card pre-installed in the merchant Disclosed is an external type used in connection with a terminal 20 (hereinafter referred to as a card terminal 20).

The biggest feature of the wireless modem according to the present embodiment 100 is based on the time when the card 10 is read by the card terminal 20 or when the card 10 is read by the card terminal 20. In addition, the card terminal 20 performs a prior call setup to perform a PPP and a TCP / IP connection before the transaction approval request text is written or before the text is written, and as a kind of pin pad. A sign pad 190 for transmitting a sign image input and a keypad 170 for transmitting a pin number input are integrally formed.

Of course, in general, the wireless modem according to the embodiment 100 allows the card terminal 20 to establish a physical line with the van server 40 through the wireless network 30 and the wireless network infrastructure 31 such as the aforementioned mobile communication network. It is supposed to perform the basic functions that make it form.

Ban server 40 is responsible for allocating radio and packet resources using the wireless network infrastructure 31, PPP and TCP / IP.

Since the wireless modem having this basic function has an advanced call setup transmission function or an operation environment setting function, the wireless network 30 and the wireless network infrastructure 31 are disconnected at the moment of reading the card 10 for card payment. The process of allocating radio resources and packet resources to the van server 40 is started.

Thereafter, the wireless modem proceeds or completes call setup corresponding to the allocation of radio resources and packet resources while the user inputs payment details.

In addition, the wireless modem receives a sign image and a pin number necessary for inputting payment contents through the sign pad 190 or the keypad 170, and inputs them to the card terminal 20.

As described above, the wireless modem of the embodiment 100 interworking with the card terminal 20 actually precedes a transaction approval request message (hereinafter, abbreviated as 'special text') when the user presses an input button after actually inputting payment details. Since the call setup can be transmitted to the van server 40 through the completed wireless network 30 and the wireless network infrastructure 31, the conventional method of allocating resources or starting call setup when pressing a previous input button is performed. As a result, it is possible to display a faster and faster approval processing speed, so that even in a wireless environment, a sign image can be used for payment without being restricted by the approval speed.

As the call setup procedure is started at the same time as the card 10 is read from the card terminal 20, a call setup is made during the user's payment history input, and the time actually used for payment approval is 1.5 to 2 seconds. It only takes about 15 seconds, and the cancellation speed is 1.5 seconds, which can dramatically improve the processing speed of card inquiry, so the merchants can make full use of the existing merchant's infrastructure without any additional investment or change of device equipment. The special advantage is that you can receive.

Embodiment 100 according to the wireless modem of the present invention has a modem case with a built-in wireless circuit.

On one side of the modem case, an interface unit 130 including a socket for power connection 121 and a plurality of ports prepared for connecting a data cable 50 or a firmware update cable are disposed on the side of the socket 121. have.

The other side of the modem case is further provided with a pen holder 195 for storing the stylus pen 191 is easy to use, it is easy to manage the stylus pen 191.

Coil spring connection wire is formed between the end of the stylus pen 191 and the pen holder 195 to facilitate storage.

In particular, as shown in Figure 3, the modem case of the wireless modem according to the embodiment 100 of the present invention is the upper and narrow shape (N) of the wide shape (W) so that it can be conveniently moved by hand It has a lower portion of), which makes it convenient to use when signing or signing a user at a merchant.

A sign pad 190 corresponding to a scratch-resistant LCD (Liquid Crystal Display) touch screen having a hardness of about 3H is disposed on a wide upper surface of the modem case.

In addition, it is preferable that a keypad 170 composed of a plurality of numeric keys, character keys or function keys (eg, input keys) is disposed on the lower surface of the narrow case in the modem case.

As shown in FIG. 4, the data cable 50 is used for connecting the embodiment 100 and the card terminal 20.

One end of the data cable 50 is connected to the second port of the interface unit 130 of the wireless modem, and the other end of the data cable 50 is connected to the first port of the card terminal 20.

The data cable 50 includes various interface communication standards, such as universal serial bus (USB) communication standard, RS232C serial communication standard, universal asynchronous receiver transmitter standard (UART) such as UART (Universal Asynchronous Receiver Transmitter) used for the card terminal 20, and It may have a standard connector jack (RJ45, PS2, USB) corresponding to the port.

The card terminal 20 has a configuration of a pre-produced apparatus. For example, the card terminal 20 is a hardware component of a general wired card terminal inquiry machine, and includes a memory unit of a ROM and a RAM, a CPU, an input / output (I / O) driver, a screen display unit, a print output unit, and a numeric key. And a key input part of a function key, a communication part equipped with a first port such as a telephone modem or a dedicated line or an RS232C communication port, and a card readout part, which is a basic communication port for connecting a wireless communication device to the first port and an external sign pad ( 190 or the sign pad and keypad processing unit which is responsible for integrating the sign image or pin number inputted from the keypad 170 into the payment details.

Card terminal 20 is a software installed on its hardware to perform the function of the card terminal inquiry, credit, debit, check, credit card inquiry processing program, check inquiry processing program, bank transfer and banking program, merchant sales management program Has

The wireless modem according to the embodiment 100 of the present invention includes a wireless circuit configured using the electronic circuit technology. The radio circuit is mounted inside the modem case.

The wireless circuit includes a microcomputer 110 connected to the interface unit 130 to control the general wireless circuit for performing wireless communication through a wireless network such as a mobile communication network; In addition to the microcomputer 110 has a power supply unit 120 for providing an operating power suitable for the wireless circuit components.

The microcomputer 110 performs a control method to be described below. During the execution of the control method, the microcomputer 110 interlocks with the sign pad driver 114 (sign pad driver) and the keypad driver 115 (key pad driver) to display data corresponding to the sign image and the pin number of the card terminal 20. It is responsible for inputting to).

The sign pad driver 114 and the keypad driver 115 (key pad driver) are installed in the memory unit of the microcomputer 110.

The sign pad 190 has a planar area corresponding to a standard size, but is capable of supplying abundant power from the power supply unit 120 so that a diagonal resistive touch panel is stacked on the LCD panel to support high-brightness backlight emission. Protected by a treated touch film, and operates as a power source of the power supply unit 120 of the wireless modem, supports the interface communication standard, and has a central processing unit (eg ARM7 / 32bit) and a pad memory. The sign pad 190 is driven by the corresponding sign pad driver 114. The sign pad 190 and the sign pad driver 114 generate a sign image generated by using the stylus pen 191, that is, signature information, and input the same to the card terminal 20.

The keypad 170 is a well-known pin number input device. The keypad 170 is combined with a conventional keypad driver 115 to input a pin number generated by pressing a key on the keypad 170 to the card terminal 20. Driven by).

The power supply unit 120 has a socket 121 for connecting a connection jack of a dedicated power adapter for converting and supplying AC commercial power to DC circuit power (DC P / W).

The power supply unit 120 provides a high power operating environment in a separate power supply form unlike the conventional method, and enables an installation configuration of additional devices requiring power.

In addition, the radio circuit of the radio modem according to the embodiment 100 has an interface unit 130. Here, the interface unit 130 is connected to the power supply unit 120, one end of the data cable 50 is connected, the second port of the corresponding communication standard connected to the data conversion unit 140, and the operating environment settings It consists of a third port connected to the environment setting unit 113 to connect the external update equipment (not shown) for.

In addition, the wireless circuit has a data conversion unit 140 for transmitting the communication signal and data received through the interface unit 130 to the wireless modem module unit 150 under the control of the microcomputer 110.

Here, the wireless modem module unit 150 is composed of a CDMA standard wireless modem circuit. The output terminal of the wireless modem module unit 150 is connected to the antenna unit 160 for any one of the internal type, external type, modem case integrated type.

The modem case integrated antenna unit 160 is manufactured using in-mold injection, laser direct structuring (LDS) technology, molded interconnect device (MID) technology, and insert molding technology.

In addition, the microcomputer 110 may be further provided with a timer 180 for driving in accordance with the operating conditions of the wireless modem to terminate a predetermined function (eg, PPP connection, etc.) within a predetermined time. .

The microcomputer 110 is provided with a central processing unit (CPU) and a memory unit, stored in the memory unit, accessed by the CPU, and operated in a bypass mode, and the preceding call setup transmission unit 111 to the same. Similarly, a separate PPP setting transmission unit (not shown) for establishing a PPP connection in advance and then performing a TCP / IP connection and transmitting a full message in response to a preamble command (pressing an input button) is further installed. It is preferable.

In addition, it is preferable that the environment setting unit 113 is further provided in the memory unit of the microcomputer 110 like a normal firmware device.

The memory unit of the microcomputer 110 has destination address information (hereinafter referred to as "destination address information") for the van server connection for performing PPP and TCP / IP connection to the van server 40 of FIG. 2 through a dedicated mobile communication network. It is desirable to be recorded, stored or updated in advance.

The preceding call setup transmitter 111 refers to a control algorithm corresponding to the control method to be described with reference to FIG. 4 below, and the preceding PPP setup transmitter 112 is not shown in detail through the drawings. As described above, it means a control algorithm for establishing a PPP connection in advance and then performing a TCP / IP connection in response to a full text transfer command (pressing an input button) and transmitting the full text. Means a known update algorithm, such as firmware update by the update device.

The microcomputer 110 is configured to use a preset environmental setting value or a preset environmental setting value by firmware update while performing the control method.

Hereinafter, a control method of a sign pad integrated wireless modem according to the present invention will be described.

In the description of FIG. 5, the van server 40 will be described as allocating radio resources and packet resources on behalf of a wireless network and a wireless network infrastructure such as a mobile communication company, which is connected to the van server 40 by a mutual network. And to explain the easy and concise description of the redundant description of the wireless network infrastructure.

FIG. 5 is a data flowchart illustrating a method of controlling a radio modem related to a preceding call setup.

Referring to FIG. 5, in order to help understanding the control method of the present invention, a basic data transmission control character or code of a 7-bit character set for information exchange determined by ISO / CCITT (International Standard Organization / Consulative Committee on International Telegraphy and Telephony) (ASCII: American Standard Code for Information Interchange) The meaning of codes used in the present invention will be described.

CR (Carriage Return) is a carriage return code, ENQ (Enquiry) is a response code used to obtain a response from the inquiry or the other terminal, STX (Start of Text) is the start code of the text start or full text, ETX (End of Text is an end-of-text code, ACK (Acknowledge) is an acknowledgment signifying that it was received without error, EOT (End of Transmission) is an end-of-transmission code, and DLE (Data Link Escape) is a transmission control extension. .

The card terminal 20 reads the user's card, reads user information contained in the card, and generates <CR> corresponding to the carriage return code.

The wireless modem receives the <CR> from the card terminal 20 and through this, performs a card recognition step S10 for recognizing that the card has been read from the card terminal 20.

The wireless modem sends a destination request signal to the card terminal 20, and obtains an address corresponding to the corresponding destination address information and a second <CR> (for example, xxx / yyyy <CR>) from the card terminal 20. (S11). In particular, in the address acquiring step (S11), the predefined destination address information is pre-defined by the wireless modem's own environment setting unit on the basis of the time when the wireless modem receives the second <CR> regardless of the existence of the xxx / yyyy. It can also be used by reading.

On the other hand, the wireless modem using the destination address information to receive a radio channel and packet resources or a communication channel for accessing the van server 40, the communication channel opening request for sequentially connecting both PPP and TCP / IP Step S12 is performed.

In this case, the wireless modem receives a plurality of response codes <ENQ> <ENQ> <ENQ> from the van server 40, and is predetermined until receiving the preamble <STX> from the card terminal 20. A call setup completion step S13 is performed to transmit <ENQ> <ENQ> <ENQ> to the card terminal 20 at each time interval (for example, 500 ms).

Meanwhile, while the steps S10 to S13 are performed, the user generates transaction details using the card terminal 20.

In this process, an image generation operation is performed by a sign pad of the wireless modem in accordance with a known touch input method corresponding to a sign operation using a stylus pen, and the card terminal 20 receives data corresponding to the generated sign image. The image input step (S14) for inputting is performed.

In addition, a pin number generation operation is performed by a keypad of the wireless modem in accordance with a known key input method corresponding to a plurality of numeric keys and function key operations. The pin number input step (S15) for inputting is performed.

The data corresponding to the inputted sign image and pin number are combined with the merchant information, the user information, and the transaction history information in the card terminal 20 to be created as the specialized request information.

Thereafter, the user presses an input button of the card terminal 20 for payment history approval or professional approval.

In this case, the wireless modem transmits from the card terminal 20 according to the input button operation as it operates in the bypass mode regardless of the transmission / reception information between the card terminal 20 and the van server 40. A specialized request transmission step (S16) of transmitting the received specialized request information (eg, <STX> specialized request <ETX>) to the van server 40 is performed.

In the specialized request, the sign image or pin number is individually merged for each wireless payment.

Thus, the van server 40 can perform more secure card authorization. Ban server 40 performs the application for approval in accordance with the normal credit card financial business process with the financial institution, writes the content of the professional approval with the received approval information, and returns it to the wireless modem.

In this case, the wireless modem also operates in the bypass mode regardless of the transmission / reception information between the card terminal 20 and the van server 40, and thus the professional approval information received from the van server 40 (eg, <STX>). A professional approval receiving step (S17) of delivering the professional approval <ETX> to the card terminal 20 is performed.

In this case, the card terminal 20 outputs the payment result as a card receipt based on the professional approval information received from the wireless modem.

The operation in the bypass mode results in a relatively quick payment approval for the present invention.

On the other hand, the wireless modem transmits an acknowledgment code (eg <ACK>) corresponding to the reception of the professional approval information and the transmission end code (eg < EOT>) is operated in the bypass mode between the card terminal 20 and the van server 40.

In addition, after receiving the <EOT> from the van server 40, the wireless modem performs a TPC termination step (S18) of terminating the TCP / IP connection at the request of the van server 40.

Of course, the wireless modem may stop the payment process and terminate the TCP / IP connection when the transmission control extension code <DLE> is input from the card terminal 20 during the payment process.

In addition, when the wireless modem reads another card from the card terminal 20 in the PPP connection state and the corresponding <CR> is further input (S19), the wireless modem sends a corresponding destination request signal to the card terminal 20, After receiving the destination address information from the card terminal 20 performs a reconnection step (S20) for reconnecting the TCP / IP.

After the reconnection step (S20), the steps S13 to S18 are repeated so that the approval and payment of another card are performed without delay of allocating a separate radio resource. Since this reconnection step (S20) is made in the PPP connection state, it can be relatively fast card payment approval through this.

In addition, the wireless modem drives the timer after the reception of the <EOT> or the TCP / IP connection is terminated to terminate the PPP connection (S21) to terminate the PPP connection when the timer expires.

Such a wireless modem performs a quick authentication and inquiry process while completely implementing a wireless environment without changing the system of the card terminal 20 provided in a wired type in the existing merchant, as compared to the conventional method as shown in [Table 2] In addition to excellent features, it can secure communication reliability and provide fast and reliable card approval and inquiry services without the time delay associated with existing wireless call setup.

As described in detail above, the sign pad integrated wireless modem and the control method of the present invention are interlocked with the modem operation based on the point of time of the card reading, so that the call setting is made during the input of the payment history in the card terminal, and eventually the payment is made. The time used for the authorization can be used for a high-speed card inquiry and approval processing speed that takes only 1.5 to 2 seconds, and the merchant makes the best use of the existing merchant's infrastructure without any additional investment or change in device. It has the advantage of unlimited benefits.

In addition, the sign pad integrated wireless modem of the present invention has an advantage of facilitating wireless system construction, simplifying cable connection and line arrangement, and occupying a relatively small installation space according to the integrated configuration of the wireless modem and the sign pad.

In particular, while the sign pad integrated wireless modem of the present invention uses the existing wired card terminal as it is, while performing the wireless payment function and sign and pin number input function at the same time, signing without being restricted by the approval speed despite the wireless environment It has the advantage that the image can be used for payment.

In addition, the sign pad-integrated wireless modem of the present invention is configured by configuring a second setting port and a third port for connecting a data cable connection for supporting a universal communication standard, and an external update equipment for setting the environment, firmware It is easy to follow-up management such as update, change setting value and add algorithm.

In addition, the sign pad integrated wireless modem of the present invention has an advantage in that the interface portion is formed on one side of the modem case, the stylus pen storage cradle is formed on the other side of the modem case, and is easy to use and easy to install.

In addition, the sign pad integrated wireless modem of the present invention provides a modem case having a wide upper portion and a lower portion of a narrow shape, and can be conveniently moved by hand, when requesting a signature from a merchant at a merchant. It has the advantage of being easy to use.

Claims (8)

In an external wireless modem in which a wireless modem module unit and a wireless circuit are mounted inside a modem case for wireless communication between a card terminal and a van server. An interface unit for data cable connection corresponding to the communication standard of the card terminal; A data conversion unit for transmitting a communication signal and data received through the interface unit to a wireless modem module unit; A microcomputer that is in charge of general operation control of the wireless circuit; A power supply unit for providing an operating power source for a wireless circuit component including the microcomputer; A timer installed in the microcomputer to terminate the PPP connection within a preset time after terminating the TCP / IP connection by the microcomputer; A sign pad connected to the microcomputer to generate a sign image; A keypad connected to the microcomputer to generate a pin number; The microcomputer is provided with a central processing unit (CPU) and a memory unit, stored in the memory unit and accessed by the central processing unit to read a card at the card terminal and simultaneously initiate a call setup procedure. A call pad integrated wireless modem, characterized in that a call setup is made during the entry of the details and a preceding call setup transmitter is further installed in the bypass mode. The method of claim 1, The sign pad integrated wireless modem, characterized in that the sign pad is disposed in the upper portion of the wide shape in the modem case, the keypad is disposed in the lower portion of the narrow shape in the modem case. The method of claim 1, The interface unit is disposed on one side of the modem case, and a pen holder for accommodating the stylus pen used for the sign pad is disposed on the other side of the modem case. The method of claim 1, The memory unit of the microcomputer includes a sign pad driver 114 and a keypad driver 115 for inputting a sign image and a pin number to the card terminal when the sign pad and the keypad are operated. Sign pad integrated wireless modem, characterized in that further installed. In the control method of a sign pad integrated wireless modem for wireless communication between the card terminal and the van server, The wireless modem, a) a card recognition step of recognizing a card read by receiving a first carriage return code <CR> input from the card terminal; b) an address obtaining step of sending a destination request signal to a card terminal based on the <CR>, receiving corresponding destination address information and a second <CR> from the card terminal; c) a communication channel opening request step of sequentially connecting both PPP and TCP / IP to the van server using the destination address information; d) receiving a plurality of response codes <ENQ> from the van server, and transmitting a plurality of <ENQ> to the card terminal at predetermined time intervals until receiving a full-text start code <STX> from the card terminal. Call setup completion step; e) an image input step of inputting data corresponding to a sign image generated by a sign pad of the wireless modem to the card terminal while steps a) to d) are performed; f) a pin number input step of inputting data corresponding to the pin number generated by the keypad of the wireless modem after step e); g) when the data corresponding to the input sign image and the pin number are generated in the card terminal as special request information in combination with merchant information, user information and transaction history information, the special request information is received from the card terminal. A specialized request transmission step of transmitting to the van server; h) a professional approval receiving step of delivering the professional approval information received from the van server to the card terminal; Control method of a sign pad integrated wireless modem, characterized in that performed. The method of claim 5, The wireless modem, After the step f), after receiving the transmission termination code <EOT> from the van server, the control method of the sign pad integrated wireless modem characterized in that the TCP / IP connection is terminated by the request of the van server. The method of claim 5, The wireless modem, If a <CR> corresponding to a read of another card is generated from the card terminal in the PPP connection state, a corresponding destination request signal is sent to the card terminal, and corresponding destination address information is received from the card terminal. Method of controlling a sign pad integrated wireless modem, characterized in that the TCP / IP after the re-connect. The method of claim 5, The wireless modem, If the transmission control extension code <DLE> is input from the card terminal during the payment process, the control method of the sign pad integrated wireless modem, characterized in that stops the payment progress operation and terminates the TCP / IP connection.

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