KR0125496B1 - Magnetic card reading method and circuit - Google Patents

Abstract

Disclosed is a reading method for a magnetic card including a first step which receives cash when a card key is not there and generates dealing items as a receipt according to a last key input, a second step which reads the card when there is a card key input in the first step and checks a card selection signal of JIS and JSO and when there is an error, displays the state of reading impossibility and converts into other card selection signal, and a third step which transmits the card data to a personal computer when there is no error and takes an action and prints the state of impossible card use and the dealing receipt according to the result.

Description

Information Reading Method and Circuit in Magnetic Card Reader

1 is a block diagram of an electronic cash register for a terminal connected to a personal computer system.

2 is an internal concrete block diagram of the electronic cash register of FIG.

3 is a positional view of JIS and ISO data arranged on a magnetic card.

4 is a data format diagram of the JIS and ISO magnetic strip shown in FIG.

5 is a layout view of the head of the magnetic card reader.

6 is a JIS and ISO signal timing diagram by the card reader of FIG.

FIG. 7 is a detailed circuit control diagram of JIS and ISO of the magnetic card reader 210 of FIG.

8 is a flow chart according to the present invention.

The present invention relates to a method of reading information in a card reader of a cash register connected to a computer system. In particular, when one side of the magnetic card is damaged, the other side can read information or select and read information even if the card type is different. The present invention relates to a method and circuit for reading information of a magnetic card.

The conventional card reader reads only information formatted in one type according to the JIS or ISO data format. If the format is incorrect, the card reader is treated as an error. Therefore, a card reader that can read JIS data format information cannot read card information in ISO format and vice versa. In addition, even if the card capable of reading all the data of the JIS or ISO recording method has been damaged, if the information recording surface of the magnetic card is damaged, it has been treated as an error. For this reason, the conventional magnetic card reader requires strict caution in storage against errors frequently occurring in card information reading, and has caused inconvenience in information reading.

Accordingly, an object of the present invention is to provide a method and a circuit which can reduce the occurrence of reading errors by reading the same purpose information on one side even if one side of the magnetic card is damaged.

Another object of the present invention is to provide a method and a circuit capable of reading all kinds of card information recorded in various different formats and increasing utilization efficiency.

The present invention for carrying out the above object is a subtotal input of the electronic cash register, if there is no card key input, cash is stored and the transaction details are generated as a receipt according to the closing key input, and when the card key input, the card information leads to the recording surface Check if there is an abnormal state due to damage or whether it matches the signal according to JIS or ISO card selection. If there is an error, the card information is displayed as unread and the other side that is not damaged or another side selection signal is read to read the other card information. And, if there is no error in the card reading is characterized in that the card information is sent to the personal computer to take an action and the card can not be processed and print the transaction receipt according to the result.

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

FIG. 1 is a system diagram according to the present invention, in which a personal computer 103 receives various card information from an aerial line and a card database base unit 101 via a modem 102, and the personal computer 103 is an in-line ( In-Line) The controller 108 connects the ECR terminals (electronic cash registers) 104 to 107 to check-in the magnetic card in the card reader of the ECR terminals 104 to 107. The full computer 103 retrieves the information corresponding to the read magnetic card number from the card database base unit 101 through the modem 102 and transmits the search result to the ECR terminals 104 to 107 via in-line. It is.

FIG. 2 is a circuit diagram embodying a part of the ECR terminals 104 to 107 of FIG. 1, in which information on the card number read by the magnetic card reader (MCR) unit 210 is transferred to the CPU 104 through the input / output unit 205. FIG. The result is processed by the in-line controller 108 through the in-line controller 108 and transmitted to the personal computer 103, and the personal computer 103 receives the search result through the modem 102. It is controlled by the line controller 108 to be received by the CPU 204 and outputted to the display device 206 through the input / output unit 205.

As shown in FIG. 3 of the magnetic card read from the magnetic card reader (MCR) unit 210 of FIG. 2, the front side is JIS data, and the back side is ISO data (recording the same membership number). As shown in FIG. 4, the data formats of JIS and ISO are similar, and the difference between JIS and ISO differs in the number of recording characters and the number of single character bits of the magnetic strip constituting the data as shown in FIG.

In addition, the head of the card reader 210 is provided with JIS and ISO heads arranged in separate positions according to the card reading direction as shown in FIG. 4, and the card selection control stage CS of the input / output unit 205 as shown in FIG. The 3-state buffer ST1-ST4 is enabled either directly or by inverting in the inverter LSψ4 according to the signal generated through the controller. Thus, as shown in (6a) and (6b) of FIG. The CLK) receives the JIS data and the clock (JIS DATA, JIS CLK) from the input / output unit 205 as shown in (6c) (6d).

8 is a flow chart of the magnetic card information reading method according to the present invention, when there is no card key input as a subtotal input, a storing process for storing cash, and a receipt issued to generate transaction details according to a closing key input in the storing process. A card information reading method of a magnetic card having a card information reading process for reading card information when a card key is input in the receipt issuing process, comprising: a JIS or ISO data format from information read in the card information reading process; The card type and status detection process for detecting the card type and status by checking the card type according to the card type, and the recording surface of the card is damaged from the value detected in the card type and status detection process or is incompatible with the recording type of the selected type of card. If there is an error that does not occur, the card reading status is displayed. When there is no error in the abnormal state processing and mode conversion process for generating the control signal and in the abnormal state display and mode conversion process, the card information data read for each ISO or JIS card is transmitted to the personal computer to determine whether or not it is a bad trader from the card company. After checking whether there is an abnormality, if there is an error, the message is processed according to the card unusable processing, and if there is no error, the receipt process includes receiving a closing key and performing a transaction process simultaneously with printing a transaction receipt.

Therefore, in detail with reference to FIG. 2 through FIG. 8 of a specific embodiment of the present invention, when the customer intends to pay the post-computation calculation with a card in the process of (8a), as shown in the flowchart of FIG. In the keyboard 207 of FIG. 2, the subtotal (sum of transactional unit prices) key is pressed in step 8 (b), and then the card key is pressed in step 8c. When the employee presses the card key in step (8c), the customer's card is read through the MCR (Magnetic Card Reader) unit 210 in step (8g). At this time, the CPU 204 reads from the MCR unit 210 through the clock and data stages of the input / output unit 205 together with the card selection signal CS of the input / output unit 105. If the card selection signal is 1 in the read result, an error is checked in step 8i. If the card selection signal is not 1, an error is checked in step 8l. The reason for checking the error in the process (8i, 8l) is to detect the presence or absence of error due to the damage of the magnetic strip. If the card selection signal is 1, the card selects a JIS data format card. If the card select signal is 0, the card select signal is a ISO data format card. Accordingly, when the CPU 204 encounters an error in the process (8i), the CPU 204 messages the message display return in the process (8j) through the display device 206 of FIG. 2, and when there is an error in the process (8i) ( In the process of 8m), the card unavailable message is displayed. Then, in the process of 8k and 8n, the state of the current card selection signal stage CS is changed to another state.

That is, when the card selection signal is 1 to the card selection signal terminal CS of the input / output unit 205 as shown in FIG. 7, it becomes 0 through the inverter LS04 to enable the 3-state buffers ST1-ST2. Input information about ISO (DATA, CLK), and if 0, output of inverter LS04 is high (1), so 3-state buffer ST1-ST2 is disabled, 3-state buffer ST2-ST4 Is enabled to input information (DATA, CLK) on JIS. Therefore, the CPU 204 sets this value to 0 to generate the signal through the input / output unit 205 for this purpose. At the same time, if it is not 1, it is set to 1. If there is no clear key input in the next step (8o), it executes again from the step (8g). If there is no error in the 0 state other than 1 in the above steps (8h) and (8l), the process of the card of the ISO data format is performed through steps (8p) to (8u).

However, when the employee reads the card again in step (8g) by the card selection signal converted in steps (8k) and (8n), the card information of the JIS data format method is read. If it is not an error in the process (8i), the card data (member number) is transmitted to the personal computer via the in-line of FIG. The personal computer 103 inquires its own member magnetic card information in step 8q or refers to the card data base unit 101 using on-line to check whether the card can be used in step 8r. If there is no abnormality in step (8u), the transaction is printed by pressing the closing key in step (8s) and the transaction history receipt is printed. The transaction is closed by issuing the card receipt. However, if there is an abnormality in the process (8r) (card use period elapsed, lost card, etc.), the card unusable message is displayed in the process (8u) and the transaction is canceled after confirming the clear key input in the process (8o).

As described above, when one side of the magnetic card is damaged, the other side may be read and recognized, thereby improving the card utilization efficiency.

Claims (2)

If there is no card key input by subtotal input, the storing process for storing cash, the receipt issuing process for generating transaction details as a receipt according to the closing key input during the storing process, and the card information when there is a key key input for the receipt issuing process. A card information reading method of a magnetic card having a card information reading process for reading a card, the card information reading method of checking a card type according to JIS or ISO data format from the information read in the card information reading process, and detecting the card type and status If the recording surface of the card is damaged from the value detected in the type and status detection process and the value detected in the card type and status detection process or if there is an error that does not match the recording type of the selected type of card, the card reading status is displayed. Or an abnormal state process and mode conversion process of changing a signal for selecting a counterpart card; When there is no error in the status display and mode conversion process, the card information data read is transferred to the personal computer to check whether there is an error from the card company, and if there is an error, the message is processed according to the card unavailable processing. If not, the reading information method of the magnetic card reader, characterized in that the transaction process of receiving a closing key input in the receipt issuing process and printing a transaction receipt at the same time. In the card information reading circuit of an electronic cash register having an in-line controller 108, a ROM 201, a RAM 202, a CPU 204, and an input / output unit 205, the input / output unit 205 Input the inverter LS04 to generate the selection signal according to the selection of the card type ISO and JIS, the data (ISO DATA, JIS DATA) and the clock (ISO CLK, JIS CLK) of the JIS and ISO cards. 3-state buffer ST1-ST4 which inputs the data DATA and clock CLK of the selected card to the input / output unit 205 when there is no error according to the output of the inverter LS04. A leading circuit in a magnetic card reader characterized by the above-mentioned.