JPH0332118B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Related Field of the Invention This invention relates to a PLU as a data file.
(Price Look Up) file and departmental file, and the register itself is a CMT (cassette device).
The present invention relates to a method for changing the data file of an electronic cash register connected to an external storage device such as a floppy disk drive or FDK (floppy disk device), or a data processing device such as a center or other register.

(b) Disadvantages of the conventional technology In order to facilitate processing and searching for each transaction, the data file in the register itself usually stores data such as the unit price of the product and the total transaction amount for each product in blocks for each product or department. It is configured to memorize. Such a data file needs to be changed each time a product unit price is changed, a product is deleted, or a new product is introduced. In this case, the part that needs to be changed is only a specific part within the data file, and data such as transaction totals must not be destroyed by changing the entire file. Therefore, by using a general file replacement command such as a load command,
It is impossible to send data that changes the entire data file to the register body from an external storage device or other data processing device.

Therefore, in the past, when it became necessary to change a file such as changing a product unit price, data could be added, deleted, or changed directly using the keyboard.

However, when there are many parts of the data file that need to be changed, it takes time to process them, the key input operations are complicated, and there is also a high possibility of input errors.

(c) Purpose of the Invention The purpose of the present invention is to add, delete, or change specific data within a data file in a quick and reliable manner, without having to perform complicated keyboard operations even when the number of data is large. The purpose is to provide a method for changing data files that can be processed.

(d) Structure of the invention This invention can be summarized as follows.

Data files are changed by sending data related to file changes (additional data, deleted data, or changed data) from an external storage device, a center, or the like. The data file stores information such as the unit price of each product and the department to which it belongs, one block at a time.
It consists of a PLU file and a departmental file that stores product group names and sales totals for each department, one block at a time. CMT or FDK is used as the external storage device. Modification of data files is performed in one of three operating modes: data addition mode, data deletion mode, and data modification mode. In the data addition mode using the PLU file, add the new product code you want to add along with its unit price, etc. in blocks.
In the data deletion mode for PLU files, delete the product code you want to delete along with its unit price in blocks. Similarly, in the data change mode in the PLU file, specific data such as the unit price that you want to change is also replaced with new data. The same process as described above for PLU files is performed for departmental files.

When transmitting the specific data related to the data file change from the external storage device or the center, first, control data for determining the operation mode in the file change mode is sent. The register body determines how to process the next data sent from this control data. After transmitting the control data, the external storage device or center subsequently transmits addition, deletion, or modification data. If the control data supports data addition mode, additional data will be transmitted, if it supports data deletion mode, deleted data will be transmitted, and if it supports data modification mode, changed data will be transmitted. Become. Since the register body determines the operating mode in the file change mode according to the transmitted control data, it processes the next transmitted data according to that mode.

(e) Effects of the Invention According to the present invention, since only the data necessary for file modification is transmitted from an external storage device or other data processing device to the register body, data in the file unrelated to the modification is not destroyed. It has the advantage of being able to process large quantities in a short time.

(f) Description of Embodiments FIG. 1 is a key layout diagram of the register main body of an electronic cash register embodying the present invention, and FIG. 2 is an overall block diagram of the register.

In FIG. 1, 1 is a numeric key, 2 is a department key, 3 is a function key, and 4 is an operation mode switching lock. Function key 3 is
It has a PLU file designation key 3a, an I/O file designation key 3b, etc. In addition, the mode switching lock 4 has a file change mode P, a registration mode REG,
Switch between inspection mode X, settlement mode Z and power OFF. As shown in FIG. 2, this register includes the CPU 10, memory 11, keyboard 12,
CMT13, FDK14, display 15, printer 1
6 and a modem 17. memory 11
consists of ROM and RAM, and RAM includes
Contains PLU files, departmental files, and other work areas. Further, the modem 17 is connected to a center (not shown) via a transmission line.

Figure 3 shows the structure of the data file. Figure a
shows the structure of the PLU file, and b shows the structure of the departmental file.

The PLU file consists of N blocks of transaction data with product numbers 1 to N, and each block is
It consists of five items of data: product code, product name, unit price, number of units sold for the product, and department to which the product belongs. The departmental file also consists of N blocks of transaction data with department numbers 1 to N. Each block contains the product group name, unit price, number counter representing the number of units sold in that product group, and sales amount in that department. It consists of a totalizer that represents

FIG. 4 is a configuration diagram of a work area allocated to RAM.

The work area consists of a number area MA for setting the number entered with number key 1, a number flag FKN for storing the number entered, and control data or additions transmitted in the file conversion mode.
It has a transmission data storage area MB that temporarily stores deleted and changed data.

FIG. 5 is a configuration diagram of transmission data in the file change mode. FIG. 5A is a configuration diagram of modem request data, and FIG. 1B is a data configuration diagram for each operating mode in the file change mode.

The register in this embodiment is designed to determine the direction of data transmission between the center and the register body. As shown in FIG. 5a, if $01 appears at the beginning of the first block of data transmitted from the center, it indicates that there is a data transmission request from the register to the center. Also,
If there is $02, it indicates that there is a data transmission request from the center to the register. Therefore,
Between the register and the center, the file change mode is actually executed only in the latter case.

As shown in FIG. 5b, the structure of the transmission data in the file change mode is such that control data is located first and processing data is located next. Then, when the control data that determines the operation mode is $01,
Indicates that the mode is PLU file data addition mode, and when $02 is displayed, it indicates that it is PLU file data deletion mode. Further, when it is $03, it indicates that the unit price data change mode is in the PLU file, and when it is $04, it indicates that the unit data change mode is in the departmental file. When the control data is $01 (data addition mode), the processing data is data in blocks of product number (N+1) or less, and when it is $02 (data deletion mode), it is the product of the block to be deleted. It becomes code data. Also, when it is $03 (unit data change mode), it becomes the product code data and new unit price data to which the unit price should be changed, and when it is $04 (unit price data change mode of department file), it is the department whose unit price should be changed. Number data and new unit price data. Any number of these pieces of processing data can be successively connected until a predetermined constant data length is reached.

FIG. 6 shows a key input operation procedure when changing a data file using an external storage device.
Figure a shows the key input operation procedure when CMT is used, and Figure b shows the key input operation procedure when FDK is used. That is, when using CMT, the mode switching lock 4 is set to file change mode P, then "0" and "0" are entered, and finally the I/O key 3b is pressed. Also, when using FDK, set the numeric value in the above operation to "0",
Set it to “1”. When the register body performs the above operations, it issues a READ command to CMT or FDK and reads the data necessary to change the file.

Next, the control procedure in the register body will be explained with reference to the flowchart shown in FIG.

When the power is turned on, step n1 (hereinafter step ni)
is simply called ni. ) and check for modem requests. This check is performed by determining whether data is being sent from the center. without modem request
Proceed to n2, reset the numeric area MA and set the numeric flag FKN=0. After completing the initialization on n2, you can input keys on n3. If the first input key is a numeric key, proceed to n5, otherwise proceed to n7. The contents of the numeral when proceeding from n4 to n5 are stored in the replacement area MA, and the numeral flag FKN is set to 1 to represent the numeral state (n6). When proceeding from n4 to n7, check whether the file change mode P is in effect at n7, and check whether the I/O key has been pressed at n8. In normal registration mode, inspection, and settlement mode, after setting n7
Proceed to other processing from ~n9. In the case of the register change mode, the operation proceeds from the operation contents shown in FIG. 6 to n7→n8→n9→n10 after setting the number. In n10 and n11, the contents of the digits are determined. If the numbers are set as "0" or "0", proceed to n12; if the numbers are set as "0" or "1", then proceed to n12.
Proceed to n13. If the number is "0" or "0",
Since you will be reading data from CMT,
Sends a READ command to the CMT and sets the first block of data sent to the transmission data storage area MB. On the other hand, the number set is "0",
If it is "1", a READ command is sent to the FDK and the first block of the sent data is set in the transmission data storage area MB. next
At n14, it is checked whether the data set in the area MB is an end code, and if it is an end code, the process returns to n1, otherwise it proceeds to n15.

The transmission data set in area MB is n15
The control data is judged at . If the data is "01", the operation mode is set to PLU file data addition mode, and if it is "02", the operation mode is set to PLU file data deletion mode.
Also, if it is "02", it is the unit price data change mode for the PLU file, and if it is "03", it is the unit price data change mode for the department file. n16 to n19 are respective judgment steps.

After the control data has been judged and the operation mode has been determined, the processing data is subsequently processed in steps n20 to n23 according to each operation mode. That is, in n20,
One block of new additional data is added to the PLU file, and in n21, deleted data (product code)
Delete one block of transaction data corresponding to .
In addition, in n22, the unit price in the transaction data corresponding to the changed data (product code) is changed to the new unit price, and n23
Now, change the unit price in the transaction data corresponding to the changed data (department number) to the new unit price.

When the processing of one block is finished, return to n10,
Process the next block using the same procedure as above. and from n14 when exit code is detected
Return to n1 and transition to the first standby state.

If there is a modem request at n1, the process advances to n24, where the data transmission direction is determined from the data of the first block, and if it is from the center to the register body, the same procedure as n12 to n23 is executed at n25 and below.

By performing the above steps, only the data necessary for changing the data file can be transmitted in large quantities at high speed from CMT, FDK, or the center.

[Brief explanation of the drawing]

FIG. 1 is a key layout diagram of the register main body of an electronic cash register embodying the present invention, and FIG. 2 is an overall block diagram of the register. Figure 3 shows the configuration of the data file, and a in the figure shows the PLU
File Structure: Figure b shows the structure of a departmental file. FIG. 4 is a configuration diagram of a work area allocated to RAM. 5A and 5B are diagrams showing the structure of transmission data in the file change mode. FIG. 5A is a structure diagram of modem request data, and FIG. FIG. 6 shows a key input operation procedure when changing a data file using an external storage device. FIG. 7 is a flowchart showing the control procedure in the register body. 1...Numeric key, 2...Department key, 3...Function key, 4...Mode switching key, 1
1...Memory (for data file storage), 13...
...CMT (external storage device), 14...FDK (external storage device), 17...modem (for connection between centers).

Claims (1)

[Scope of Claims] 1. An electronic cash register having a data file for storing transaction data such as unit price and total in blocks for each product or department, and in which the register main body is connected to an external storage device or other data processing device. transmitting control data for determining an operation mode in the data file change mode and addition, deletion, or modification data for each block according to the operation mode from the external storage device or other data processing device to the register body; A method for changing a data file of an electronic cash register, characterized in that an operating mode is determined from the control data in the register body, and then data is added, deleted or changed for each block according to the operating mode.