JPH0650068Y2 - Sales data processor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sales data processing device such as an electronic cash register or a POS system for collecting sales data for each product code.

[Prior Art] Conventionally, in an electronic cash register (ECR),
It is known that the contents of a PLU memory that stores sales data for each product corresponding to various product codes (PLU codes) are read out according to a search method called a hash method.

[Problems to be solved by the invention] However, in the hash search method, since a certain operation is performed on the PLU code using a hash function and the address of the PLU memory corresponding to the PLU code is obtained, the search speed is fast, It is impossible to use all the areas in the PLU memory efficiently, the usage efficiency of the PLU memory is low, and there are disadvantages that many empty areas remain in the memory. Further, in the electronic cash register, in addition to the process of storing sales data corresponding to PLU data in the PLU memory, single item data such as a PLU code of a registered product is stored. In this case, in order to store this single item data, a dedicated memory was prepared as a single item collecting memory separately from the PLU memory.

An object of this invention is to effectively use an empty area in a data memory that stores sales data for each product code to store predetermined data such as single product data, and to save a dedicated memory provided separately. It is to be.

[Means for Solving the Problem] The means of the present invention is an input means having a key for inputting a product code of a product to be registered for sale and a key for inputting an amount of the product, and data for storing data. A flag indicating that the data stored in the storage area and the data storage area is sales data by product code aggregated by product code, a flag indicating that the data is predetermined data different from the sales data by product code, or data Storage means having a flag storage area for storing a flag indicating that the storage area is an empty area, and a hash function storage for storing a hash function for calculating an address of the storage means corresponding to the product code. Means, the product code input from the input means, and the hash read from the hash function storage means Calculating means for calculating the address of the storage means corresponding to the product code based on the function, and a product code corresponding to the product code in the data storage area of the storage means corresponding to the address calculated by the calculating means Means for storing separate sales data, and means for storing a flag indicating that the sales data is for each product code in a flag storage area of the storage means corresponding to the address, and storing the predetermined data in an empty area of the storage means. In order to do so, pointer means for designating the storage means in an address order, and based on the contents of the flag storage area at the address designated by the pointer means, the sales data by commodity code is stored in the data storage area of the address. Determining means for determining whether or not the data storage area is stored in the data storage area by the determining means. When it is determined that the sales data by product code is not stored,
Means for storing the predetermined data in the data storage area, and means for updating the pointer means when it is determined by the determination means that the sales data by product code is stored in the data storage area. It is characterized by having.

[Operation] The operation of the means of this invention is as follows.

When the product code is input from the input means, the address of the storage means corresponding to the product code is calculated based on the product code and the hash function read from the hash function storage means, and the product corresponding to the product code is calculated at the address. Sales data by code is stored.

In this case, the addresses calculated based on the product code and the hash function are not continuous and random, so that empty areas are formed in places in the storage means. Therefore, if the predetermined data other than the sales data for each product code is stored in this empty area, the storage means can be effectively used without waste.

Therefore, in order to search the empty area of the storage means, the pointer means designates the storage means according to the address order, and the discrimination means stores the commodity code in the data storage area of the address based on the contents of the flag storage area at the designated address. It is determined whether or not the separate sales data is stored.

When it is determined that the sales data for each product code is not stored in the designated data storage area, the predetermined data is stored in this data storage area.

When it is determined that the sales data for each product code is stored in the designated data storage area, the pointer means is updated and the next data storage area is designated.

Therefore, the empty area in the data memory that stores the sales data for each product code is effectively used, and the dedicated memory that is separately prepared to store the predetermined data other than the sales data for each product code is not required. Can save

[Embodiment] An embodiment will be described below with reference to FIGS. 1 to 3.

FIG. 1 is a block circuit diagram showing the basic configuration of the ECR.

On the keyboard of the key input unit 11, various keys normally provided, that is, a numeral key KA, a function key KB, and a mode changeover switch MS are provided. In addition, the mode changeover switch MS is set according to the changeover position, "setting", "registration", "OFF (power off)", "X
This is a control lock that switches between "inspection" and "Z (settlement)" modes. Then, the key input signal output from the key input unit 11 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 12.

The CPU 12 executes normal PLU code setting processing, PLU-specific registration processing, and the like according to a microprogram stored in advance. That is, the PLU code setting process is performed in the state where the mode changeover switch MS is set to the setting mode,
A PLU based on the PLU code input from the key input unit 11 and the hash function read from the hash function storage unit 14
This is performed by calculating the address of the memory 13 and setting the input PLU code in the area of the PLU memory 13 corresponding to this calculated address. As a result, each PLU code is randomly set in the PLU memory 13 according to the hash method and distributedly stored. Further, in the PLU-specific registration process, the PLU code input from the key input unit 11 or the PLU code reading unit 15 is searched from the PLU memory 13 according to the hash method while the mode changeover switch MS is set to the registration mode. , PLU memory 13 corresponding to the PLU code
This is done by accumulating the number of sales and the amount of sales stored in.

The PLU memory 13 is composed of a random access memory, and its contents are accessed according to a hash search method or a normal forward search method. And PLU memory 1
3 has a data storage area DM in addition to the flag storage area FM,
In the flag storage area FM, a flag indicating the type of data stored in the corresponding data storage area DM, that is, a PLU data flag “P”, a single item data flag “S”, and an empty area flag “E” are set. To be done. Where flag storage area
Although the flag "E" for empty area is initially set in FM, the flag "P" for PLU data is set in the flag storage area FM in which the PLU code is set at the time of setting the PLU code described above. The single item data flag “S” is set at the time of single item data collection described later. In this case, when the single item data is stored in the PLU memory 13 during the single item data collection, the value indicating the final storage position (address of the PLU memory 13) is set in the pointer SP in the CPU 12. Furthermore, at the time of inspection or settlement, single item data is read from the PLU memory 13 to inspect or settle the individual item data.
At this time, the single-piece data is read from the PLU memory 13 using the work pointer SP1 in the CPU 12. The PLU memory 13
In the data storage area DM corresponding to the PLU data flag “P”, PLU data (PLU code, unit price, number of sales, amount of sales, etc.) is stored.

On the other hand, in the CPU 12, in addition to the above-mentioned pointers SP and SP1, the arithmetic unit and the control unit that are normally provided are provided. Then, the CPU 12 executes the above-mentioned PLU code setting processing, PLU-specific registration processing, inspection, and various processing at the time of settlement, and further gives sales data etc. to the display control section 16 to display it on the display section 17. The print control unit 18 is caused to print on the receipt and journal set in the print unit 19.

Next, the operation of this embodiment will be described with reference to FIG. 2 and FIG.

FIG. 2 is a flowchart showing an operation at the time of collecting single item data, which is executed together with the PLU-by-PLU registration processing. First, the pointer
Increment processing for adding "1" to the value of SP is performed (step A1). Then, the flag is read from the flag storage area FM of the PLU memory 13 addressed by the value of the pointer SP, and if the read flag is the PLU data flag “P”, other flags are read from the PLU memory 13. Until step A2 is returned to step A1.
Since the pointer SP is set to a value after the final storage position of the single item data, the flag read from the PLU memory 13 is the PLU data flag "P" or the empty area flag "E". Now, when the empty area flag "E" is read from the PLU memory 13, the single item data flag "S" is set in the empty area of the PLU memory 13 addressed by the value of the pointer SP, and the individual item data is also written. Store (step A3).

Such an operation is executed every time PLU registration for one product is performed. As a result, as shown in FIG. 1, individual product data is sequentially stored in the empty area of the PLU memory 13 so that it can be identified by its flag “S”. To be done. Therefore, single item data is collected using the empty area of the PLU memory 13.

The single item data collected in this way is read at the time of inspection or settlement.

FIG. 3 is a flow chart showing the operation in this case. When the mode changeover switch MS is set to the inspection or settlement mode, a predetermined key for instructing inspection or settlement of single item data is operated. Then, first, the pointer SP
Initialize the value of 1 (step B1) and flag storage area FM of the PLU memory 13 addressed by the value of this pointer SP1
The flag is read from and whether or not this read flag is the single product data flag "S" (step B
2) If the flag is not for single item data, update the value of pointer SP1 (step B3), and as a result, from step B4 on condition that the value of pointer SP1 does not exceed the value indicating the final storage position of single item data. Return to step B2.

Then, from the PLU memory 13, the single product data flag "S"
Is read out, the single item data stored in the data storage area DM of the PLU memory 13 corresponding to the single item data flag “S” is read out and sent to the print control unit 18,
Print to the journal set to 19 (step
B5).

If the inspection mode has been set, this is detected in step B6 and the process proceeds to step B3. As a result, PL
Steps B2 to B6 are repeated until the single item data is sequentially read from the U memory 13 and all the individual item data are printed. After printing all the single item data, step
The process proceeds to B8, and the mode is determined, but since the inspection mode is set now, the inspection report of the single item data is issued (step B10).

If the payment mode has been set, the process proceeds from step B6 to step B7, and the flag "E" for the empty area is set in the flag storage area FM of the PLU memory 13 addressed by the value of the pointer SP1. After rewriting and clearing the single item data stored in the data storage area, the process proceeds to step B3. As a result, the single item data is sequentially read from the PLU memory 13, and steps B2 to B7 are repeated until all the single item data have been printed. When all the single item data have been printed, the process proceeds to step B9 where the pointer SP is initialized and then a settlement report is issued (step B10).

Modified Application Example In the above embodiment, the PLU memory is taken as an example, but it can be applied to other classification files. Further, not only ECR but also POS system and office computer can be applied.

[Effect of the Invention] According to the present invention, in order to store the predetermined data other than the sales data by product code, the empty area in the data memory for storing the sales data by product code is effectively used to improve the usage efficiency. The dedicated memory, which was separately prepared in, becomes unnecessary, and the memory can be saved.

[Brief description of drawings]

1 to 3 show one embodiment, FIG. 1 is a block circuit diagram showing the basic configuration of ECR, FIG. 2 is a flow chart showing the operation at the time of collecting single item data, and FIG. 3 is single item data. 5 is a flowchart showing an operation at the time of inspection or settlement. 11 …… Key input section, 12 …… CPU, 13 …… PLU memory, 14…
... Hash function storage section.

Claims (1)

[Scope of utility model registration request] 1. An input unit having a key for inputting a product code of a product to be registered for sale and a key for inputting an amount of the product, a data storage area for storing data, and a storage in the data storage area. Is a flag indicating that the generated data is sales data by product code aggregated by product code, a flag indicating that the data is predetermined data different from the sales data by product code, or an empty area in which no data is stored. Storage means having a flag storage area for storing a flag indicating that a hash function storage means stores a hash function for calculating an address of the storage means corresponding to the product code; and input from the input means. The product code based on the product code and the hash function read from the hash function storage means. Calculating means for calculating the address of the corresponding storage means, and storing sales data by product code corresponding to the product code in the data storage area of the storage means corresponding to the address calculated by the calculating means. Means for storing a flag indicating that it is sales data by product code in the flag storage area of the storage means corresponding to the address, and the storage means for storing the predetermined data in the empty area of the storage means in the order of addresses. Pointer means for designating in accordance with the above, and a judging means for judging whether or not the sales data by product code is stored in the data storage area of the address based on the contents of the flag storage area at the address specified by the pointer means. The sales data for each product code is stored in the data storage area by this determination means. When it is determined that no,
Means for storing the predetermined data in the data storage area, and means for updating the pointer means when it is determined by the determination means that the sales data by product code is stored in the data storage area. A sales data processing device characterized by being provided.