JPS61109171A - Communication system - Google Patents

Abstract

PURPOSE:To prevent foul replacement of contents of a file device by having comparison between the password transmitted from a calling device of the remote side and the stored password of the device of the remote side to which the transmission is permitted and performing the communication only when coincidence is obtained between both passwords. CONSTITUTION:A central device A dials a desired CD (automatic cash dispenser) to transmit a call for communication. At the CD a network control part 5 detects the ringing tones and informs them to a control part 1. The part 1 produces a circuit connection command via an MODEM4, and the part 5 connects the circuit. Then the device A transmits it own password. Then the CD confirms the reception and gives an answer, and the circuit is cut off with both the device A and the CD. Then a collation part 15 compares the received password stored in a main memory 2 with that stored in a security memory part 14 and informs the coincidence/discordance of said comparison to the part 1. The part 1 confirms the coincidence of the comparison and starts and automatic dial part 13 to call the device A through the part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication system between a transaction device or the like and a central device.

In recent years, systems that automate transactions such as cash payments have become popular in financial institutions, etc., by placing automated teller machines (hereinafter referred to as CDs) in each branch and connecting them via a line to a central device in one main branch. There is.

As a communication method for the above system, a method called a semi-online method has been devised, in which communication is performed by connecting to a central device only at the start and end of the CD operation time.

In other words, in this system, at the start of a day's operation, customer information is stored from the central device on a CD, transactions are performed on the CD based on that information, the day's transaction information is recorded on a floppy disk, etc. This method updates the parent file by transmitting it to the device.

The purpose of the above method is to reduce line costs and usually public lines are used, but for this reason it is possible to connect and communicate with the CD by pretending to be the central device, and therefore the CD
There is a possibility that a crime may occur in which transaction information recorded in a bank is deleted.

Therefore, there is a need for a communication method that can maintain confidentiality in a semi-online transaction system using a public line.

[Conventional technology]

The conventional technology will be explained below.

FIG. 2(a) is a block diagram showing a semi-online CD system, and FIG. 2(b) is a block diagram showing an example of the configuration of a conventional CD.

In FIG. 2 (al), A is the central unit, B and C are exchanges, and CD is an automatic teller machine.

When central device A communicates with CD, central device A communicates with CD.
Make a call using D's phone number, connect the line, wait for CD's response, and request transmission of transaction information.

On the line between the central device A and the CD, 100 is a home line, and if an unauthorized connection is made on this line 100, the ring tone will always connect you to the CD, and the public line 1
In the case of 01.102, it is possible to connect to the CD by making a call using the CD's telephone number, which raises the possibility of fraud.

An example of the configuration of a conventional semi-online CD is shown in Figure 2 (bl
will be explained below using

Reference numeral 1 denotes a control unit that is composed of a microprocessor or the like and controls each functional unit by a program stored in the main storage unit 2, 3 a communication control unit that communicates with the central device A, 4 a modulation/demodulation unit, and 5 a network control unit. , 6 is a file device for storing daily transaction information, 7 is an interface for controlling the modem section 4 and the network control section 5, and 8 is a central bag WA at the start of operation.
a customer information storage unit for storing customer information transmitted from 9;
1 is a cash counter that stores cash and counts and pays banknotes according to customer instructions; 10 is a passbook printer that prints a passbook or an in/out list; 11 is an operation unit having a display function and an input function; and 12 is a card reading unit. .

The general operation is as follows.

When the customer enters transaction information, ie, transaction card, PIN number, amount, etc. manually according to the guide display, the control unit 1 extracts the customer information from the customer information storage unit 8, verifies the customer himself, checks the validity of the amount, etc. .

Activate the cash counter 9 and pay cash.

At the end of the day's transactions, the central device A makes a call to the CD, connects the line, performs closing processing such as discontinuing handling, and instructs the transmission of the day's transaction information stored in the file device 6. .

The CD transmits transaction information and stops operating.

[Problem that the invention seeks to solve]

As explained above, in a semi-online trading system using a public line, since it is possible to connect to a transaction terminal device through the line, there is a problem that the transaction information stored in the transaction device will be deleted. child.

[Means for solving problems]

The above-mentioned conventional problem is that the central device is equipped with a means to send a password to the transaction device after making a call to the transaction device and connecting the line. The transaction device is provided with a verification means for comparing and verifying the password of the central device, and a means for calling the central device and connecting the line after confirming the match by the verification means, and After confirmation, the problem can be solved by the communication method of the present invention, in which the transaction device calls the central device and performs communication.

[Effect]

According to the present invention, the transaction device compares the password sent by the partner device that made two calls with the pre-stored password of the partner device that is permitted to send, and only if they match, makes a call to the partner device. In order to communicate using
This has the effect of preventing unauthorized updating of the contents of the file device.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1(a) is a block diagram showing the configuration of a transaction device implementing the present invention, and FIG. 1 (bl is a flowchart showing the operation). Note that the same symbols represent the same objects throughout the figures.

In FIG. 1 (al), reference numeral 14 denotes a security storage section in which passwords and telephone numbers of parties to whom one communication is permitted are recorded and held.

15 is a collation unit, and network control unit 5. The password received through the modulation/demodulation unit 4 and the communication control unit 3 is compared and verified with the password stored in the security storage unit 14.

13 is an automatic dialing section, and a security storage section 1
4. Extract the phone number corresponding to the password stored in 1. The network control unit 5 follows the line connection instructions from the control unit 1.
request to dial.

The above are the main parts for implementing the present invention, and the operation will be explained below with reference to FIG. 1(b).

(1) Central device A dials the CD with which communication is desired and makes a call.

(2) In the CD, the network control unit 5 detects the ringing tone and the control unit 1
When notified, the control unit 1 issues a line connection command via the modulation/demodulation unit 4, and the network control unit 5 connects the line.

(3) After the line is connected, central unit A transmits its own password, and after CD responds with an acknowledgment of receipt, both CD and central unit A disconnect the line.

(4) Next, the collation unit 15 compares the received password stored in the main storage unit 2 with the password stored in the security storage unit 14, and notifies the control unit 1 of the match/mismatch.

(5) The control unit 1 that has confirmed the match is the automatic dialing unit 1.
3 and calls the central device A through the network control section 5.

(6) Perform predetermined communication after connecting the line.

Note that the above procedure applies to all communications other than transaction information transmission.

In FIG. 1(a), the collation section 15 can be included in the control section 1. It is also possible to store the customer information together with the transaction information in the file device 6 and to omit the customer information storage section 8.

Although the automatic teller machine CD has been described above as an example of a transaction device, other transaction devices such as ATMs may also be used.

It can also be applied to POS terminal devices and the like.

〔Effect of the invention〕

As explained above, according to the present invention, the central device transmits a password, the receiving transaction device compares and verifies the password, confirms which central device is authorized to communicate, and calls the central device. In order to communicate, users will have double keywords for their password and phone number, which can be expected to be highly effective in preventing fraud.

[Brief explanation of drawings]

FIG. 1(a) is a block diagram showing an embodiment of the transaction device. FIG. 1(b) is a flowchart showing the operation. FIG. 2(a) is a block diagram showing the system configuration. FIG. 2 (BL is a block diagram showing a conventional transaction device. In the figure, CD is an automatic cash dispensing machine. A is a central device, B and C are exchanges 1, a control section, and 2 is a main storage section. 3 is a communication control unit; 4 is a modulation/demodulation unit; 5 is a network control unit; 6 is a file device; 7 is an interface; 8 is a customer information storage unit; 9 is a cash counter; 13 is an automatic dialing unit; 14 is a security storage unit. L5 is the collation part. Reed 1 diagram <a> Fu 1 diagram (b) Japanese 2 diagram
(α) Kaya 2 (shi)

Claims (1)

[Claims] A communication method for a transaction device that performs transactions by communicating with a central device connected to a public line, in which the central device is provided with a means for transmitting a password to the transaction device after making a call to the transaction device and connecting the line. and a verification means for disconnecting the line upon reception of the password and comparing and verifying the received password with the password of the central device that has been previously authorized to communicate, and after confirming a match by the verification means, calling the central device to connect the line. A communication method characterized in that the transaction device is provided with a means for communicating with the central device, and after confirming a password transmitted from the central device, the transaction device calls the central device to perform communication.