KR950005530B1 - Automatic data recognition method of magnetic card and barcode and its control system - Google Patents

Abstract

The system controls a hardware between systems using data recognized by a magnetic strip card and a barcode or processes data recognized by data communication between the system and a computer. It comprises : (i) means transmitting a data processed by a microprocessor(1) to a printer(8) through a buffer(21); (ii) means displaying a data processed by the microprocessor on LCD; (iii) a magnetic strip reader(10) transmitting it to microprocessor after reading and amplifying a data of a magnetic strip card. (iv) means displaying it with LED or buzzer through an input-output part(4) after the microprocessor judges a read data; (v) means displaying state of function on LCD; (vi) communication means(14) transmitting data between the computer and the system; (vii) means connecting a barcode scanner(15) with the microprocessor; and (viii) means sharing ports with a conversion switch(17).

Description

Automatic data recognition method of magnetic card and bar code and control device

1 is a block diagram showing a circuit configuration of a main part of the present invention.

2 is a block diagram showing a circuit configuration of an input / output unit according to the present invention.

3 is a block diagram showing a state in which the first and second views are combined.

Figure 4 (a) (b) (c) (d) (e) is a flow chart for controlling the overall operation of the present invention.

* Explanation of symbols for the main parts of the drawings

1: microprocessor 2: decoder

3: memory 4: input / output

5: clock 6: reset signal generator

7: Communication Driver 8: Printer

9 liquid crystal panel 10 magnetic strip reader

11: LED: 12: Buzzer

13: keypad 14: communication

15: Barcode scanner 16: TTL signal input / output terminal

17: conversion switch 18: input device

19: output device 20: backup power

21: buffer

The present invention relates to a method for automatically recognizing data of a magnetic card and a bar code and a control device capable of simultaneously processing data of a magnetic card and data of a bar code.

More specifically, the present invention is a device for recognizing data read from a magnetic strip card and data of a barcode entered through a barcode scanner, using the recognized data and controlling the hardware between the devices or by data communication with a computer. The data can be processed on a computer.

The conventional magnetic card reader system is divided into a reader that reads data using a simple recognition device and a control device that receives and stores the data and transmits the data to a computer. Not only that, there was a drawback that when an abnormality occurred in the control device, all readers connected to the control device were stopped.

In addition, the system reads and stores data, processes the data, and controls a door. In particular, a system in which a control device and a reader are separated cannot control the door. There was a drawback to using separate door controls.

In addition, there has been a problem in that, in order to have a visual effect when processing the data, an LED or an LCD is attached to the system to indicate the reading state of the card.

The present invention has been invented to solve the above-mentioned matters, and an object of the present invention is to connect a barcode scanner to read barcode data and to perform data processing in parallel with the data of the magnetic strip card.

Another object of the present invention is that the control unit and the reader unit are integrated so that the computer and the control unit correspond to 1: 1 in online communication, so that even if a failure occurs, the other device is not affected at all.

Still another object of the present invention is to attach two readers so that magnetic card data and barcode data can be processed simultaneously.

Still another object of the present invention is to provide a printer control function so that data read by the control device can be directly output to the printer.

Another object of the present invention is to provide a wide range of applications having a control function such as a door and the like, and a small number of parts, so as to reduce cost and facilitate transportation, installation and operation.

The configuration of the present invention for achieving the above object will be described in detail by the accompanying drawings.

1 is a block diagram showing the circuit configuration of the main part of the present invention, a microprocessor 1 for controlling the overall operation, a decoder 2 for outputting a signal controlled by the microprocessor 1, and a decoder ( A decoder 2 for outputting a signal controlled by 2) and an input / output terminal 4 designated by the decoder 2 for controlling the memory 3 and input / output are selected.

The memory 3 sets a ROM 3A containing a program for controlling the entire apparatus by the microprocessor 1 and an initial value, various parameters and a work area when the microprocessor 1 controls the apparatus. The main memory is composed of a RAM 3B and a ROM 3C which temporarily stores data read from the magnetic strip writer 10.

The input / output terminal 4 can control peripheral device functions by a signal controlled by the decoder 2 to control the printer 8, the liquid crystal panel 9, the LED 11, the buzzer 12, and the like. do.

The input / output stage 4 is a portion in which the decoder 2 analyzes a command exported from the microprocessor 1 to send a command to an external device or receive data, for example, inputting a time generated from the clock 5. When displaying on the liquid crystal panel 9 through the output terminal 4, data is sent out through the input / output terminal 4.

The clock 5 has a built-in time function to automatically calculate the year, month, day, hour, minute, and second. When the backup power source 20 is connected, the clock 5 automatically calculates the time without the help of the microprocessor 1.

The reset signal generator 6 generates and provides a reset signal to the circuit. When the power supply is unstable, the operation of the device may be stopped by a momentary power failure. In this case, the reset signal generator 6 provides a reset signal to the device.

Conventional devices have a problem in the circuit that generates the reset signal, the operation is often stopped or abnormal operation due to a momentary power failure, the device generates a reset signal even if the power is momentarily It does not stop the device or cause malfunction.

The communication driver 7 functions to drive the communication device when communicating between the device and a computer or when inputting data recognized by a barcode scanner into the device.

2 is a block diagram showing a circuit configuration of an input / output unit of the present invention, and shows a function of controlling external peripheral devices. The buffer 21 is attached to the printer 8 and the liquid crystal panel 9 for the stability of the data when the data is exported, and in the case of the printer 8, the buffer 8 prevents the influence on the circuit when exchanging data. .

The printer 8 can be connected to any existing product, and in this device, the data read by the magnetic strip reader 10 can be taken to the printer 8, and the data sent from the computer by connecting the computer and the device. The printer 8 can be photographed through the apparatus.

The liquid crystal panel 9 displays the data of the magnetic strip writer 10 and displays the year, month, day, hour, minute, and second sent to the clock 5, and sets the state and parameters of the function as the KEY is pressed on the KEY PAD. And display the status of the device controlled by the other microprocessor 1.

The magnetic strip reader 10 reads data from the magnetic strip card and sends the data to the microprocessor 1 and has a function of simply inputting data.

The LED 11 determines the normal or error of the data read by the magnetic strip reader 10 from the microprocessor 1 and displays the function according to the pressed state of the keypad. .

Like the LED 11, the buzzer 12 may express whether the data is normal or error with a buzzer sound to determine whether the card is normally read, and determine whether the key is pressed correctly when the key 13 is pressed on the keypad 13. Express it with a buzzer.

The keypad 13 uses the keypad 13 to set various functions possessed by the device. The password, communication speed, address of the device, and control mode group (GROUP), individual, and key mode (KEY) at the time of door control are used. -MODE), status display such as the current remaining capacity of memory and the number of data stored, status display such as the number of data stored in memory, erasure of data stored in memory, year displayed on LCD panel You can change the month day hour minute second.

Communication 14 is a part necessary for data transmission between a computer and the device, and the device and the device, and the communication method of the device is an RS-422A serial communication method.

The conventional device (RGC-900) is a STAND ALONE TYPE, which has a built-in control function in the device itself. Since RS-422A is used to set the device to be connected to the computer as a control device, other devices communicate with the computer 14 via this control device.

However, the disadvantage of this device is that if the control device fails, communication between the computer and other devices is lost and data transmission is not possible at all.

To compensate for this drawback, the device communicates with RS-422A when connected to a computer, so that all devices are connected to the computer as 1: 1 by using MULTI-DROP method.

In addition, the conventional device has a communication distance of only a few tens of meters between the computer and the control device, but the device can transmit data up to 1.5 km.

The barcode scanner 15 and the TTL signal input / output terminal 16 share a single port and are connected to the outside, and the barcode scanner 15 or the TTL signal input / output terminal 16 is operated by operating the conversion switch 17 according to the purpose. I use it. The barcode scanner 15 connects to the communication driver 7 shown in FIG. 1 to perform RS-232C communication, and transmits data read from the barcode scanner 15 to the microprocessor 1.

The signal input / output terminal 16 is used to connect with equipment that processes TTL level signals.

The input circuit 18 constitutes a circuit for controlling the electric door lock by a combination with the output circuit 19 to control the door. The remaining contact of the output circuit 19 checks the open state of the door to control the alarm. When you read the magnetic strip card by ringing or attaching a bell or lamp on the outside, it plays the role of ringing the bell or turning on the lamp when the data is normal.

The backup power source 20 should be preserved when the device stops working due to a power failure. Therefore, the backup power source 20 is attached to the backup power source 20 to preserve the data stored in the RAMs 3B and 3C. In addition to preserving the data of the year, month, day, hour, minute, and second contained in the clock (5), the normal time can be improved.

Referring to the operation and effects of the present invention configured as described above are as follows.

FIG. 3 is a circuit block diagram showing a combination of FIG. 1 and FIG. 2. When the power switch is first turned on, the reset signal generator 6 generates a reset signal to initialize the IC of the microprocessor 1 and the peripheral circuit. The device is ready for normal operation. The data read from the barcode scanner 15 or the TTL signal input / output terminal 16 by the magnetic strip reader 10 is input to the microprocessor 1 or read simultaneously. When data is input, the microprocessor 1 reads the input data to distinguish whether or not it is normal. If the data is normal, the microprocessor 1 first stores the data in the memory 3C through the decoder 4 and passes through the input / output terminal 6. The data is displayed on the liquid crystal panel 9 through the buffer 21.

And turn on the buzzer (12) once and then light the LED (11). If necessary, data is taken out to the printer 9 through the buffer 21.

If the input data is abnormal, the buzzer 12 is sounded four times through the input / output stage 4 and then lights up the LED 11 which means abnormal. The clock 5 has a built-in time calculation function, so that the time calculation is performed without the control of the microprocessor 1 to generate the year, month, day, hour, minute, second, and generate time when data is input from the magnetic strip reader 10. The data is stored in the RAM 3C together with the data, and at the same time, the time is periodically displayed on the liquid crystal panel 9. The backup power supply 20 preserves the data and initial settings stored in the RAMs 3B and 3C when the power is turned off. The backup power supply 20 also supplies the backup power supply 20 to the clock 5 to calculate the time even when there is no power supply. To generate the current time.

The keypad 13 recognizes the state in which the key is pressed via the input / output terminal 4, and the parameters set according to the key press on the keypad 13 are stored in the RAM 3B. When the device performs the operation, the operation is performed by the parameters stored in the RAM 3B. When the key of the keypad 13 is pressed, the microprocessor 1 recognizes the pressed state of the key and if the key is pressed normally, the buzzer 12 sounds once and if the key press is abnormal or does not match the set parameter, the buzzer 12 Ring four times.

There are two types of methods for transferring data stored in the RAM 3C to a computer 14 as necessary, for batch processing. One method is to store the data in RAM (3C) for a certain period of time and send it to a computer. The other method reads data from the magnetic strip reader 10, and then the microprocessor 1 determines the data and stores the data only when it is normal. There is a method of ON-LINE transmission to the computer through the communication (7).

This is one of the most important parts of the device, and when performing communication 14 with a computer, it is possible to connect 100 of the devices per computer to perform communication 14.

One of the essential functions of the device is to control an external device (entrance door, copier, bell, lamp) using the device. When controlling the door, the combination of the input device 18 and the output device 19 is used. It is possible to control the opening and closing of the door by controlling the electric door lock (ELEC-TRIC DOOR LOCK), and the operation method is RELAY (RL1) when the microprocessor 1 reads the data read from the magnetic strip reader 10 normally. The door is opened (OPOEN) by applying a current to the electric door lock, and in case of abnormal data, the contact of the relay (RL2) is attached to it and a bell or lamp is attached to indicate that the door is not opened.

In addition, when the door is arbitrarily opened, the microprocessor 1 detects that the door is open and can be confirmed by ringing the buzzer 12.

In addition, additional circuitry must be added to control the copier and is not included in the device.

However, when the circuit is attached to the outside and connected to the output device 19 of the device, the operation of the copier can be controlled by connecting the contact of the device to the inside of the copier. The magnetic strip card is read into the magnetic strip reader 10 so that the copier operates after the microprocessor 1 determines whether or not the data is normal.

In addition, the device can be used as an application product by interfacing with other devices rather than a simple card reader system, and can also be incorporated into home automation and factoring automation.

4 is a flowchart for controlling the overall operation of the present invention, which will be described in connection with FIG.

When the power switch is first turned on, the reset signal generator 6 generates a reset signal, and the microprocessor 1 reads a program from the ROM 3A to start operation.

Flowchart, Checks the free space of the RAM 3C, displays a scanning message MESSAGE on the liquid crystal panel 9 when there is free space, and goes to the flowchart ①.

If there is no free space, a message “FULL” is displayed on the liquid crystal panel 9, the input of the magnetic strip reader is stopped, and the flow proceeds to the flowchart ①.

The flowchart ① is a part which detects the press of the keypad 13, and when the press of the keypad 13 is not detected, Go to

If the pressing of the keypad 13 is detected, it branches to the possible processing part according to the pressed state (the number of the keypad 13).

When "0" of the keypad 13 is pressed, the password is inputted from the keypad 13 as a part for changing the date, time, and day of the week, and compared with the storage password (RAM (3B)). Will be input again. When a normal password is entered, a new date, time, and day of the week are input from the keypad 13.

After inputting a new date, time, and day of the week, the input date, time, and day of the week are compared to be normal, and if it is abnormal, the input is received from the keypad 13 again. If normal, the new date, time, day of the week is outputted to the clock (5), changed, and then the flow chart, Go to

When "1" of the keypad 13 is pressed, it is a part for changing the storage password and receives the password from the keypad 13 and compares it with the storage password (RAM (3B)). Receive input.

When the normal password is entered, a new storage password is input from the keypad 13 and after completion of the input, the new storage password is stored in the RAM 3B. Go to

When the "2" times of the keypad 13 is pressed, a password is inputted from the keypad 13 as a part of changing the device, and the password is input again when the password is different from the storage password (RAM 3B).

When the normal password is entered, the address of the new device is inputted from the keypad 13, and after completion of the input, the address of the new device is stored in the ROM 3B, and then the flowchart, Go to

When "3" of the keypad 13 is pressed, it is a part for changing the communication 14 speed, receives the password from the keypad 13, compares it with the storage password (RAM (3B)), and then compares it with the password. Will be input again.

When the normal password is entered, the new communication 14 speed is input from the keypad 13, and after completion of input, the new communication 14 speed is stored in the RAM 3B, and the serial communication charge IC (microprocessor 1) is inputted. Flow chart, after changing the speed) Go to

When "4" of the keypad 13 is pressed, it is a part for changing the communication 14 speed and receives the password from the keypad 13 and compares it with the storage password (RAM (3B)). Will be input again.

When the normal password is entered, the new communication 14 speed is input from the keypad 13 and after completion of the input, the new communication 14 speed is stored in the RAM 3B, and the serial communication charge IC (microprocessor 1) is inputted. After changing the speed of the built-in flow chart, Go to

When "5", "6", "7", "8", and "9" of the keypad 13 are pressed, it is the part to change to work, leave, go out, your company, and other modes. After changing (RAM (3B)), Go to

Flowchart, In the above, the free space of the RAM 3C is displayed on the liquid crystal panel 9, and it is checked whether there is data to be output to the printer. If there is data to be output to the printer, it is output through the printer (8), and then the data is input from the magnetic strip reader (10). Branch to

If there is input data, compare normal data application. If abnormal data, LED 11 and buzzer 12 indicate abnormality, Go to

If it is normal, compare the current mode with the control mode or time and attendance mode. If it is the control state, compare the start group (GROUP) and the key control. Branch to

In the case of group control, the input data of the magnetic strip reader 10 is compared with the stored (RAM (3B)) group code by the set length, and in case of abnormality, a warning message is displayed on the liquid crystal panel 9. The date, time, day of the week, status, and input data are combined and stored in the RAM 3C. After storing the LED (11), buzzer (12) indicates abnormality and flow chart, Go to If it is normal, a PASS message is displayed on the liquid crystal panel 9, and the LED 11 and the buzzer 12 are displayed normally. Go to

However, if the key is control, the flow chart, In the case of T & A mode, the input data of the magnetic strip reader 10 is stored in the RAM 3C, displayed on the LCD panel 9, and then the date, time, input data and the like in the RAM 3B for printer output. Stores a combination of Korean graphic fonts in the mode of going to work, leaving work, going out, your company, or other modes (RAM (3B)). After the operation is completed, the flow chart after indicating that the normal input to the LED (11) and the buzzer (12), Go to

Flowchart, Displays an enter code message on the liquid crystal panel and waits for input of the keypad 13. If there is no input of keypad 13 until 1 second has elapsed, Branch to

If there is an input of the keypad 13 before 4 seconds have elapsed, the input data is stored in the RAM 3B and a new input is waited from the keypad 13. Waiting time for new input is 4 seconds and if there is no input until 4 seconds elapse, flow chart, Branch to

The input operation of the keypad 13 is repeated until the enter key is input. When the enter key is input, the input data of the keypad 13 and the magnetic strip reader stored in the RAM 3B are input. If the input data is compared by the set length and abnormal, the flow chart, Branch to

If it is normal, the LED 11 shows normal and displays a pass (RSAA) message on the liquid crystal panel 9, Go to

Flowchart, Displays a warning message on the LCD panel 9 that the LED 11 and the buzzer 12 are abnormal, and stores the date, time, day of the week, state, and input data in the RAM 3C. Go to

Flowchart, In the clock (5) input the date, time, day of the week and display on the liquid crystal display and once again compares whether the current status is the control mode or time and attendance mode. Branch to

In the control state, the group and the key are controlled again. In the case of the key control, the input data of the keypad 13 stored in the RAM 3B and the input data of the magnetic strip reader are the group strip. When the input data of the reader 10 is compared with the stored group code (RAM (3B)) by the set length, and when it is abnormal, a flowchart, Branch to the normal flow, Branch to Flowchart, Compares the entry (RAM 35), the opening time, and determines whether the opening time is zero.

If the open time is zero, branch to the input device X0 (18) input part, otherwise connect the output device Y0 (19) and count the set time. If the set time is equal to the counted time, disconnect Y0 (19) and go to X0 (18) input part.

X0 (18) input part monitors the door's open state. If the door is not closed even after the set time has elapsed, the LCD panel 9 shows the message "CHK DOOR" on the buzzer and the magnetic strip Stop input of the header and go to the input data storage section.

However, when the door is normally closed, the scanning message is displayed on the liquid crystal panel 9 and then the input data storage part is moved. In the input data storage section, a date, time, day of the week, status, and input data are stored in the RAM 3C, and then the flowchart, Go to

Flowchart, In the case where the data input from the magnetic strip reader is abnormal, that is, if the key control is performed, the input data of the keypad 13 stored in the RAM (3B) and the input data of the magnetic strip reader are the group control. It compares the input data of the reader 10 with the stored group code (RAM 3B) by the set length and compares the alarm time stored as a part to be processed in case of abnormality (RAM 3B). Determine if time is zero.

If the alarm time is zero, the flow chart, If not, connect the output device Y1 (19) and count the set time. If the set time and the counted time are the same, Y1 (19) is cut off and a scanning message is displayed on the liquid crystal panel (9). Go to

Flowchart, In the process of processing the data input from the barcode scanner 15 and the TTL signal input / output terminal 16, if there is no input data, the communication 14 goes to the input / output portion.

If there is input data, the data is analyzed to determine whether it is an ASCII CODE or a BAR IMAGE, and when it is a BAR IMAGE, it is converted to an ASCII CODE after code conversion.

Then, the input data is displayed on the liquid crystal panel 9, and the date, time, day of the week, state, and input data are combined and stored in the RAM 3C, and then the communication 14 goes to the input / output part. The communication 14 input / output section branches to the flow chart A when there is no input data compared.

If there is input data, it branches to the flowchart ② and stores the data in RAM 3B until GR (CARRIGE-RETURN) data is input. When continuous data is input, GR (CARRIGE RETURN) is compared, and when GR (CARRIGE RETURN) data is not detected, the operation is repeated, and when detected, branching is performed to determine whether it is a normal input. In the normal input determination section, it is determined whether the input data and the device number stored in the RAM 3B are the same, and whether the command structure itself is normal is compared. If the two conditions are not met, the flow branches to the flowchart A. FIG.

If the two conditions are met, the instruction is decoded. There are 15 types of commands, and each command is divided into two types. Commands 00-03 transmit data stored in the RAM 3C to the computer, and command 04-14 is a command for changing various parameters and the clock 5 stored in the RAM 3B. After receiving each command, the microprocessor completes the execution of the command and sends the response to the computer. Go to

As described above, according to the present invention, the device itself operates without being connected to another control device, and the device itself has a built-in control function to store and store the read data, to communicate online with a computer, and to control the door. It has the ability to control access to restricted areas.

And with communication function, up to 100 MULTI-DROPs can be used to communicate with a computer, and models can be connected for long distance communication.

This device has address for each device. 00 address is the starting address, and 00 address acts as a control device for RS-232C communication with computer, and 01-99 address for RS-422A communication with control device. Therefore, the function can be diversified, and the device can be made compact and the device can be easily transported and installed, and the number of parts can be greatly reduced, thereby reducing the price.

Claims (2)

Means for sending the data processed by the microprocessor 1 to the printer 8 through the buffer 21 or directly from the computer to the printer 8 without passing through the microprocessor 1; and the microprocessor Means for displaying the data processed in (1) on the liquid crystal panel 9 through the buffer 21 or displaying the data sent from the computer directly on the liquid crystal panel 9 without passing through the microprocessor 1; After reading and amplifying the data of the card, the magnetic strip reader 10 to be sent to the microprocessor 1 and the read data are judged by the microprocessor 1 to determine whether the data is normal or not. Means for displaying the LED 11 and the buzzer 12 through (4), means for pressing the keypad 13 to display the state of the function on the liquid crystal panel 9, between the computer and the apparatus. Means for transmitting data, means for connecting the barcode scanner 15 with the microprocessor 1 in the RS-23C communication method, and signals for input and output via the TTL signal input / output terminal 16; Means for connecting the microprocessor 1 with a means for setting one port so that the port can be shared by the conversion switch 17, and the input circuit 18 and the output circuit 19 are combined. Means for controlling, means for checking the open state of the door at the time of door control by using the remaining contacts of the output circuit 19, and backup means for storing data of the RAMs 3B, 3C, and the clock 5; Automatic data recognition method of the magnetic card and bar code, characterized in that consisting of (20). A microprocessor (1), a decoder (2) for controlling the memory (3) and input / output terminals by the microprocessor (1), and a control signal from the decoder (2) to receive and execute a command An input / output terminal 4 for connecting the memory 3 and an external device to perform input / output of data, and the input / output terminal 3 are an input device keypad 13 and an output device. A device (8), a buzzer (12), a buffer (21), a printer (8) and a liquid crystal panel (9), a clock (5) and a magnetic strip reader directly controlled by the microprocessor (1). (10) When the barcode scanner 15 is controlled through the communication 14 and the communication driver 7, an input device connected to the TTL signal input / output terminal 16 and directly controlled by the microprocessor 1 ( 18) and an output device 19 and a reset signal generator 6 which initializes the magnetic card. And bar code control device.