JPH05307685A - Data transmission method - Google Patents

Abstract

PURPOSE:To transmit processed data to a master side at the time of processing data by prescribed number. CONSTITUTION:ECR (electronic cash register) 11 on the master side retrieves PLU file PF with respect to the inquiry of a unit price corresponding to a PLU number from ECR 13 on a slave side and transmits unit price data obtained by it to inquiring ECR 13 on the slave side. Besides, ECR 13 on the slave side update-processes sales data based on unit price data transmitted from ECR 11 on the master side and inputted sales objects number data, etc., in response to an inquiry and stores the updated piece of sales data in a one- transaction portion register memory D. Data stored in the one-transaction portion register memory D is transmitted to ECR 11 on the master side at the time of operating a cash/keeping key and ECR 11 updates the PLU file PF with the piece of transmission data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission system used in a POS system.

[0002]

2. Description of the Related Art Conventionally, in an ECR (electronic cash register) or POS system, a plurality of slave side ECRs are connected to a master side ECR, and a master side ECR is connected.
A centralized data transmission system is known in which a PLU file for storing sales data for each product is provided, and the sales data for each PLU sold by each slave ECR is transmitted to the master ECR and collected in the PLU file. Has been. In such a centralized data transmission system, each time PLU registration is performed on the slave side, sales data for each PLU (PLU code, sales quantity, etc.) input from a barcode reader etc. is transmitted to the master side. Therefore, the data of the PLU file on the master side is updated.

[0003]

However, as described above, each time PLU-specific registration is performed on each slave side,
If the PLU code, the number of sales, etc. are transmitted to the master side, the amount of data transmission becomes very large and the use efficiency of the line drops. In addition, there is a problem that the transmission processing load on the master side is heavy. Further, if the data on the slave side is collected by the master side when the store is closed, it is not possible to confirm the sales situation during the business by inspection. An object of the present invention is to enable data to be transmitted to a master side by an instruction to end one transaction.

[0004]

FIG. 1 is a functional block diagram showing the configuration of the present invention, in which 1 is a master side electronic device and 1a is a master side electronic device.
The electronic device 2 on the slave side is a classification file that stores classification setting data such as PLU code, first unit price, second unit price, and the like.
It is updated based on the update data transmitted from the. Reference numeral 2a is a storage unit provided in the slave electronic device and storing, for example, classification-based data such as a PLU code and a unit price.

[0005]

The master electronic device 1 is provided with a classification file 1a for storing classification-specific update data, and the update data of this classification file 1a is updated based on the update data transmitted from the slave electronic device 2. In addition, the slave electronic device 2 performs a data update process based on the input data, stores the updated data in the storage unit 2a, and instructs the data stored in the storage unit 2a to end one transaction. Is transmitted to the master electronic device 1. Further, even if the unit price is changed in the master electronic device 1 before the instruction to end one transaction, the unit price is not changed in the slave electronic device. Therefore, the data can be transmitted to the master side by an instruction to end one transaction.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be specifically described below with reference to FIGS. FIG. 2 is a basic block circuit diagram showing an ECR data transmission system. Master side ECR
11 are connected to a plurality of slave side ECRs 13 ...
Data is transmitted and received between 11, 13, ...

In the ECR 11 on the master side, the input unit 1
On the keyboard of 1A, ten keys KA, function keys KB, cash / deposit money key KC, PLU key KD,
A first unit price key KE, a second unit price key KF and the like are provided, and a mode changeover switch MS is provided.
Here, the mode changeover switch MS is "set", "register", "power off", "check",
The “accounting” mode is selected, and for example, the PLU unit price can be set in the setting mode. In this case, when the PLU unit price is entered in the setting mode and the first unit price key KE is operated, the unit price is set as the first unit price, and when the second unit price key KF is operated, the unit price is set. Is set as the second unit price. The key input signal output from the input unit 11A corresponding to the operation key and the mode designation signal output corresponding to each switching position of the mode changeover switch MS are input to the CPU (central processing unit) 11B. And specify its input program. Also, this E
The CR is provided with a bar code reader (fixed scanner) 11C as another external input means, and its output is the CPU 11
Read into B.

The CPU 11B performs input processing, registration processing, according to various microprograms stored in advance.
It executes data transmission processing and the like, and has a configuration including a transmission register, a transfer register, a control unit, and a calculation unit. Then, the CPU 11B exchanges data with a RAM (random access memory) 11D to accumulate sales data. The RAM 11D executes data writing and reading operations under the control of the CPU 11B, and corresponds to each PLU number, the first unit price, the first unit price sales quantity, the second unit price, the second unit price sales quantity and the second unit price. A PLU file PF that stores selection flags and the like is provided. The CPU 11B is connected to a transmission unit 11H in addition to the display unit 11E, the printing unit 11F, and the drawer 11G that are included in a normal ECR. And CPU1
1B sends the sales data to the display unit 11E for digital display, or sends it to the printing unit 11F for printing on receipt paper and journal paper, and further controls the release operation of the drawer, and also transmits with the transmission unit 11H. Send and receive data.

The slave side ECR 13 is the master side E
It is configured almost the same as CR11, and the master side EC
Input unit 11A, CPU 11B, fixed scanner 11C, RAM 11D, display unit 11E, and printing unit 11 indicated by R11.
F, drawer 11G, input unit 13 corresponding to transmission unit 11H
A, CPU 13B, fixed scanner 13C, RAM 13
D, a display unit 13E, a printing unit 13F, a drawer 13G, and a transmission unit 13H are provided. In this case, the RAM 13D stores the contents of the PLU number memory A in which the PLU number input this time in the PLU-based registration is stored, the registration number counter B for counting the number of registrations by one customer (one transaction), and the registration number counter B. While being transferred, it has a subtraction counter C for subtracting the number of registrations and a transaction memory D for sequentially storing registration data for one transaction. Here, the registration memory D for one transaction is "1"-
The PLU number, unit price, and sales quantity are stored in correspondence with the "n" address, and the contents are cleared when the closing key for ending one transaction is operated. The other slave side ECR 13 has the same configuration as that described above, and therefore is denoted by the same reference numeral and its description is omitted.

Operation FIG. 3 is a flowchart executed by the ECR 11 on the master side by interruption at regular intervals, and FIG. 4 is an ECR 13 on the slave side.
5 is a flowchart showing a registration operation executed in step S6. First, when executing registration by PLU in the slave side ECR 13, the registration mode is selected by the mode selector switch MS, and then the bar code (PLU number) recorded on the product label or the like is read by the fixed scanner 13C. As a result, the flow of FIG. 4 starts to be executed. First, whether the first registration in one transaction is the registration number counter B
Is determined based on the contents of (step S1). Now
If the value of the registration number counter B is "0", it is determined that the registration is the first time, so the process proceeds to step S6, where PL
PL input this time transferred to U number memory A
The U number is transmitted to the master side ECR11 and the PLU is transmitted.
Inquire about the unit price for the number. Then, in response to this inquiry, the unit waits to receive the unit price transmitted from the master ECR 11 (step S7).

Here, the master side ECR 11 executes the flow of FIG. 3 by interruption at regular intervals. First, in step S21, it is executed by the master itself. P
It is checked whether there is data input associated with registration by LU or the like. If there is no data input on the master side, the process proceeds to step S23 to check whether the data transmitted from the slave side ECR 13 has been received. If there is no received data, this flow is ended. Therefore, the master side E
The CR 11 detects data input on the master side or data reception from the slave side at regular time intervals. Now, assuming that the slave side ECR 13 has inquired about the unit price, in step S23 this is detected and the process proceeds to step S24, in which the transaction memory D for one transaction of the slave side ECR 13 for which the unit price is inquired is full (overflow. It is determined whether or not the closing state has been entered or the closing key has been operated after the registration of one transaction is completed. Now, since it is the first registration of one transaction, it is neither the full state of the registration memory D for one transaction nor the case where the closing key is operated. Therefore, the process proceeds to step S30, where the inquiry of the unit price is answered and the PLU file is read. Applicable PLU
The unit price data for the number is read and transmitted.
In this case, when the second unit price selection flag corresponding to the corresponding PLU number in the PLU file is turned on, the second
When the unit price is turned off, the first unit price is transmitted to the slave side ECR 13 that has made an inquiry.

When the unit price data is transmitted from the master side ECR 11 in response to the unit price inquiry in this way, the slave side ECR 13 detects this in step S7 of FIG. With the registration, the increment processing for incrementing the value of the registration number counter B by 1 is executed. Then, the registration memory D for one transaction is addressed by the value of the registration number counter B, and the number data in the designated address area D (B) is incremented by +.
The addition process of 1 (step S9) is executed, and then the registration process is performed based on the received unit price data (step S10).
Is executed. In this case, the PLU number and the reception unit price data are stored in the address area D (B) of the registration memory D for one transaction, and the display, printing and subtotal addition processing of the input data are executed. As a result, for example, in the first registration of one transaction, as shown in FIG. 2, the PLU number “2” and the unit price “10 yen” are set in the address 1 of the registration memory D for one transaction.
The number "1" is stored. After that, whether or not the registration memory D for one transaction is full is checked according to whether the value of the registration number counter B has reached its final address "n". Now, since the first registration of one transaction has been completed, the registration memory D for one transaction has not reached the full state, and the flow directly ends.

However, when the following registration is made in the slave side ECR 13, steps S1 to S
In step 2, the value of the registration number counter B is transferred to the subtraction counter C. Then, the transaction memory D for one transaction is addressed by the value of the subtraction counter C, and it is determined whether the PLU number in the designated address area is equal to the PLU number in the PLU number memory A input this time. .. If the PLU number registered last time and the PLU number input this time are not equal, the subtraction counter C
The process of decrementing the value of -1 (step S4) is executed, and then it is determined whether the value of the subtraction counter C is "0" (step S5). Here, if the value of the subtraction counter C is not "0", the process returns to step S3 to check whether the PLU number registered two times before and the PLU number input this time become equal. In this way, the contents of the one-transaction registration memory D are accessed in the reverse direction, and it is searched whether the same PLU number as the PLU number input this time is stored in the one-transaction registration memory D. In this case, as a result of searching all the PLU numbers in the registration memory D for one transaction, if the same PLU number is not stored, the process proceeds to step S6, and the master ECR 11 is queried for the unit price. As a result, the master ECR
When the unit price data is sent from 11, the process proceeds from step S7 to steps S8 to S10. by this,
For example, if the second registration is made in one transaction,
As shown in FIG. 2, P is set at the second address of the registration memory D for one transaction.
The LU number "3", the unit price "20 yen", and the number "1" are stored. If the PLU number input this time is not stored in the registration memory D for one transaction as a result of such an operation being performed each time registration is performed, the unit price is inquired and transmitted from the master side ECR 11. The incoming unit price data is sequentially stored in the registration memory D for one transaction, and the registration is performed based on the received unit price data. On the other hand, as a result of searching for one transaction registration memory D according to the PLU number input this time, if it is found in step S3 that the same PLU number is stored in one transaction registration memory D, The process proceeds from step S3 to step S11, and an addition process of incrementing the sales quantity corresponding to the PLU number stored in the transaction memory D for one transaction by +1 is executed. Then, the unit price data corresponding to the PLU number is read from the registration memory D for one transaction, and the registration process (display, print, subtotal addition) is performed based on this (step S12). Therefore, when the PLU number of the same product as the already registered product is input in one transaction, the unit price is not inquired to the master ECR 11 and is stored in the registration memory D for one transaction. Registration is performed based on the unit price.

However, when it is detected in step S13 that the registration memory D for one transaction is full during the registration because the number of registrations of one transaction is large, the process proceeds to the next step S14, and one transaction is executed. Of the data in the minute registration memory D, all other data except the data in the final address area are sequentially transmitted to the master side ECR 11. And
After clearing the value of the registration count counter B, add the value to +
Then, the initial value "1" is set in the registration number counter B (steps S15 and S16). Next, a data editing process (step S17) of transferring the data in the final address area of the registration memory D for one transaction to the head address area thereof is performed. Such an editing process is performed in preparation for the last-minute correction, and even if the transaction memory D for one transaction becomes full, the data registered immediately before is retained in the leading address area, so that the correction can be performed. However, when such processing is finished, it is checked whether or not predetermined data described later has been transmitted from the master side ECR 11 within a fixed time (steps S18 and S19). Now, if the predetermined data has not been transmitted from the master side ECR 11 even after a lapse of a certain time, the flow directly exits from this flow. However, if the data has been transmitted, the process of sequentially writing the received data into the registration memory D for one transaction is performed. Performed (step S
20).

Here, when data is transmitted from the slave side ECR13 in the master side ECR11 according to the full state of the transaction memory D for one transaction, this is detected in steps S23 and S24 of FIG. In step S25, it is checked whether the data is transmitted according to the closing key operation. Now, since the data transmission corresponds to the full state of the registration memory D for one transaction, the process proceeds to step S26, and each PLU transmitted from the slave side ECR 13
The second unit price selection flag in the PLU file is sequentially searched according to the number, and as a result, it is checked whether the second unit price selection flag is turned on. Now, assuming that the second unit price selection flag is turned on, it is checked whether the unit price corresponding to the PLU number transmitted from the slave side ECR 13 is the first unit price. Here, the searched P
The second unit price selection flag corresponding to the LU number is turned on,
Moreover, assuming that the unit price of the PLU number transmitted is the first unit price, it means that there is a change from the first unit price to the second unit price during the registration of the transaction. In this case, In step S28, the PLU number and the first unit price are transmitted to the slave side ECR 13.
Therefore, during registration of one transaction, the master side E
Even if the unit price is changed by the CR 11, the original first unit price is sent back to the slave side ECR 13 instead of the changed second unit price for those already registered with the first unit price. Then, in the next step S29, a data collection process of adding the data transmitted from the slave side ECR 13 to the PLU file is performed.

As described above, when the first unit price data and the like are sent back to the slave side ECR 13 in step S28, the slave side ECR 13 has the above-mentioned step S20.
Then, the received data is sequentially stored in the registration memory D for one transaction. As a result, the PLU number whose unit price has been changed during the registration of one transaction and the first unit price thereof are written in the registration memory D for one transaction. As a result, even if the same merchandise is registered for the subsequent registration for the customer, the registration is performed at the same unit price.

FIG. 5 shows a correction process executed in the slave side ECR 13. When the sales data is corrected, the PLU number to be corrected is read by the fixed scanner 13C after operating the correction key. As a result, the flow of FIG. 5 is executed, and first, the value of the registration number counter B is transferred to the subtraction counter C (step S31). Then, with the value of the subtraction counter C, one transaction registration memory D
Is designated, and a match between the PLU number stored in the designated address area and the corrected PLU number read in the PLU number memory A is detected (step S32). Here, when the sales data registered immediately before is corrected, a match is detected in step S32, but if it is not immediately before correction, a mismatch is detected and the process proceeds to step S33, where the value of the subtraction counter C is decremented by one. .. As a result, in the next step S34, it is checked whether the value of the subtraction counter C is "0", and if it is not "0", the process returns to step S32, and steps S32 to S34 are performed until the corrected PLU number is searched.
Is repeated. Now, when the corrected PLU number is retrieved, the process proceeds to step S36, the correction process is performed, and the sales quantity in the transaction memory D for one transaction addressed by the value of the subtraction counter C is decremented by one. Then, the correction data is printed and displayed (step S37). On the other hand, as a result of searching the registration memory D for one transaction, if the corrected PLU number is not stored in the registration memory D for one transaction, the registration memory D for one transaction becomes full state and all the contents are mastered. Since it has been transmitted to the side ECR 11, in this case, the process proceeds to step S35, and a notification is made to turn on the correction addition lamp (not shown) for a certain period of time. In this case, the receipt is printed and correction is performed by key input.

FIG. 6 is a flow chart when the closing key such as a cash / deposit key is operated on the slave side ECR 13. First, when the tightening key is operated, a normal tightening process (step S41) is executed. Then, all the data in the registration memory D for one transaction is ECR1 on the master side.
1 is transmitted (step S42). After that, the contents of the registration memory D for one transaction are all cleared and the PLU
Number memory A, registration number counter B, subtraction counter C
Are cleared respectively (steps S43, S4
4).

When the registration of one transaction is completed and the closing key is operated in this way, all the data in the registration memory D for one transaction is transmitted to the master side ECR 11, but in this case,
In the master side ECR11, steps S23 to S2
This is detected in step 5, and the process proceeds to step S29, where the received data is added to the PLU file.

Although the PLU-specific data has been described in the above embodiment, the same applies to department-specific data and the like.

[0021]

According to the present invention, each slave side has a PL
The data can be transmitted to the master side by an instruction to end one transaction without transmitting the data such as the PLU code and the number of sales to the master side every time the registration by U is performed. Therefore, it is possible to reduce the data transmission amount and improve the use efficiency of the line. Further, the burden on the transmission process on the master side can be reduced.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing the configuration of the present invention.

FIG. 2 is a basic block circuit diagram showing an ECR data transmission system according to an embodiment.

FIG. 3 is a flowchart showing an operation executed by a master ECR.

FIG. 4 is a flowchart showing a registration operation executed by each slave ECR.

FIG. 5 is a flowchart showing a correction operation executed by a slave side ECR.

FIG. 6 is a flowchart showing an operation actually performed in the slave side ECR according to a tightening key operation.

[Explanation of symbols]

 11 Master side ECR 11B, 13B CPU 11D, 13D RAM 11H, 13H Transmission section 13 Slave side ECR 13A Input section 13C Fixed scanner PF PLU file D Registration memory for one transaction

Claims (2)

[Claims] 1. In a data transmission method capable of transmitting and receiving data between a master electronic device and a slave electronic device, the master electronic device includes a classification file for storing classification data, and The slave side electronic device is provided with a storage means for storing update data updated based on the input classification data, and the update data in this storage means is transmitted to the master side electronic device in response to an instruction to end one transaction, A data transmission method in which the master electronic device updates the data of the classification file based on the update data transmitted from the slave electronic device. 2. A master-side electronic device classifying file stores class-specific data including a first unit price and a second unit price, and when the master-side electronic device changes the unit price, the slave-side electronic device stores only one unit price. 2. The data transmission method according to claim 1, wherein the unit price is not changed until a transaction end instruction is given.