KR100343011B1 - Data exchange control method for ecr - Google Patents

Abstract

The present invention relates to a data exchange control method of an electronic cash register which enables the function of the IRC even between devices of any number rather than a continuous range.

The data exchange control method of the electronic cash register of the present invention clears a counter indicating the number of a connected device when the currently input key is an IRC key, and flags a device for performing an IRC function on a pre-allocated communication table. And setting the device number and simultaneously inputting a device number thereof, and increasing or increasing the counter, and performing or not performing an IRC function with the corresponding device except for itself according to the flag setting state on the communication table. Characterized in that made.

Description

Data exchange control method of electronic cash register {DATA EXCHANGE CONTROL METHOD FOR ECR}

The present invention relates to a method for controlling data exchange of an electronic cash register, and more particularly, to an electronic cash register capable of exchanging data between arbitrary electronic cash registers in a system having a plurality of electronic cash registers having mutual data exchange functions. Data exchange control method.

In general, a cash register is a device that processes various data accompanying product sales and informs users of results so that information management can be smoothly managed. It ranges from point of sales system to comprehensively manage the distribution economy. Hereinafter, in the present specification, the term Electronic Cash Register (ECR), which means an electronic cash register controlled by a microprocessor, is used as a broad concept including a low-end cash register to a POS terminal.

Among the above ECR, there are some of higher class ones, which are equipped with a communication function for mutual data exchange between the same devices, and this function is commonly referred to as IRC ( I nter r egister C ommunication). Through the IRC function, tasks such as downloading of data or collecting and exchanging sales information between different ECRs are performed.

However, assuming that, for example, ten ECRs having the above-described IRC function are interconnected at a store, conventionally, ECR numbers are sequentially assigned, for example, sales data from ECRs 5 to 9 ECRs. There was a problem that communication was only possible by downloading, and a command to download sales data of non-consecutive designations, for example, ECR 3, ECR 5 and ECR 9, was impossible.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a method for controlling data exchange of an electronic cash register which enables the function of the IRC even between devices of any number rather than a continuous range.

The data exchange control method of the electronic cash register of the present invention for achieving the above object is to clear the counter indicating the number of the connected device when the current input key is the IRC key, and the IRC function on the pre-allocated communication table. Setting a flag for a device to be performed and simultaneously inputting a device number of the device and performing the IRC function with the corresponding device except for itself according to the flag setting state on the communication table while increasing the counter; or Characterized in that it comprises a step that does not perform.

1 is a block diagram of an electronic cash register to which a data exchange control method according to the present invention can be applied;

2 is an exemplary configuration diagram of a key input unit in FIG. 1;

3 is a flowchart illustrating a data exchange control method of an electronic cash register according to the present invention;

4 is a diagram showing the structure of a communication table used in the data exchange control method of the electronic cash register according to the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: central processing unit, 20: key input unit,

30: rom, 40: ram,

50: communication control unit, 60: display unit,

70: printer, 80: buzzer,

90: power supply

Hereinafter, a method for controlling data exchange of an electronic cash register according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of an electronic cash register to which a data exchange control method according to the present invention can be applied. As shown in FIG. 1, the electronic cash register to which the data exchange control method of the present invention can be applied includes a key input unit 20 for generating various key codes for mode designation and cash registration, including selection of an IRC function, and a key. The system for the system operation including the program according to the method of the present invention, the central processing unit 10 for performing the various functions in the designated mode, and specify the mode of the ECR according to the key code received while kissing the input unit 20 Customer receipt and various processing results under control of the ROM 30, the RAM 40, which stores various data generated during a program or a transaction set by the user, and a communication table to be described later, and the central processing unit 10. Operation of the display unit 60 for visually displaying various information related to a transaction under the control of the printer 70 and the central processing unit 10 which issue a document as a document. A buzzer unit 80 for notifying the state or abnormal operation, a power supply unit 90 for receiving commercial AC power and converting it into various types of DC power required for driving the ECR, and then supplying it to each part of the circuit including the central processing unit 10. And a communication controller 50 for controlling communication with other ECR so that the IRC function can be performed.

FIG. 2 is an exemplary configuration diagram of a key input unit in FIG. 1, and in fact, arrangement and number of functions (functions) may be changed or added according to the height or ease of use of a model. As shown in FIG. 2, the key configuration of the ECR to which the data exchange control method according to the present invention can be applied is a mode selection switch 21 used to designate a desired operation mode among various operation modes, and the device number setting of the ECR. Executes a desired function among the functions provided in the number / letter key group 27 used for inputting various numbers / letters, the item key group 25 used for designating the desired item, and the ECR, such as the number of the ECR desired for communication. It can be roughly divided into the function key group 23 used for the purpose. In the function key group 23, an IRC selection key 23a necessary in the present invention is defined.

3 is a flowchart illustrating a data exchange control method of an electronic cash register according to the present invention, and FIG. 4 is a view illustrating a structure of a communication table used in the data exchange control method of the electronic cash register according to the present invention. As shown in Fig. 3, in the data exchange control method of the ECR according to the present invention, in step S10, it is determined whether there is any key input. As a result of the determination in step S10, if there is any key input, the flow advances to step S12 to determine whether the input key is the IRC communication key 23a. As a result of the determination in step S12, if the input key is the IRC key 23a, the process proceeds to step S14 again to clear the counter i indicating the number of the ECR in which the current IRC function can be performed. In addition, each flag on the communication table assigned to the RAM 40, that is, the communication table corresponding one-to-one with the device number of the ECR, is set as to whether or not to exchange data as shown in FIG. Enter its own device number in the memory area MY_REG. In the example of FIG. 4, ECR # 2, ECR # 3, ECR # 5, and ECR #N want to exchange data, and the rest do not want to exchange data.

In step S16, it is determined whether the counter i is equal to or greater than the maximum number of connected devices in the communication table. As a result of the determination in step S16, if the counter i is less than the maximum number of connected devices in the communication table, the flow advances to step S18 to determine whether the device indicated by the current counter i is itself. As a result of the determination in step S18, when the device indicating the current counter i is not itself, the process proceeds to step S20 to determine whether the flag setting state of the communication table Comm_tbl of the corresponding device is '1'. do. As a result of the determination in step S20, when the flag setting state of the communication table Comm_tbl of the corresponding device is '1', the process proceeds to step S22 to perform an IRC operation through communication with the corresponding device. That is, data such as sales data and programs are exchanged, and the process proceeds to step S24 again, whereby the value of the counter i is increased by one.

On the other hand, when the flag setting state of the communication table (Comm_tbl) for the ECR indicated by the current counter i in step S20 is '0' or the device indicated by the current counter i in step S18 is itself. Immediately proceeds to step S24. If the counter i is equal to or larger than the maximum number of connected devices in the communication table Comm_tbl in step S16, the flow returns to step S10. In addition, when the key currently input in step S12 is not the IRC key 23a, the process proceeds to step S26 to perform a general ECR function and then returns to step S10. The data exchange control method of the electronic cash register of the present invention can be performed well in the program (PGM) mode.

The data exchange control method of the electronic cash register of the present invention is not limited to the above-described embodiment, and can be modified in various ways within the scope of the technical idea of the present invention.

According to the method of controlling data exchange of the electronic cash register of the present invention as described above, the convenience of exchanging data between arbitrary electronic cash registers in a system equipped with several electronic cash registers having mutual data exchange functions. There is this.

Claims (1)

In the data exchange control method of an electronic cash register having an mutual data exchange (IRC) function, If the current input key is an IRC key, clear the counter indicating the number of the connected device, and set a flag for the device to perform the IRC function on the pre-allocated communication table and input the device number. Steps and And performing or not performing an IRC function with a corresponding device except for itself according to a flag setting state on the communication table while incrementing the counter.