JPS5925260B2 - electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic cash register that is connected to an electronic scale and is capable of registering and processing data from the electronic scale.

Generally, electronic scales and electronic cash registers are connected,
In a system where data from an electronic scale is registered in a cash register, weight data from the electronic scale is read into the cash register.

Then, at the cash register, sales data is calculated and registered from the weight data based on the unit price data per unit weight that has been entered in advance from the keyboard, and the sales data is printed on a receipt, journal, etc. using a printer. I try to go out. By the way, with electronic cash registers that can be connected to electronic scales, it is important to check whether the printed sales data was obtained using the electronic scale.
You may want to know whether the data was entered directly from the cash register keyboard.

For this reason, in this type of electronic cash register, before reading data from the electronic scale, the register side can print out a product code indicating that the data is from the electronic scale, and the sales data and A receipt with the product code printed on it can also be issued. In the United States, some states require by law that when printing out sales data using an electronic scale, the product code must also be printed out.

Conventionally, in the case of this type of electronic cash register, regardless of whether the product code is printed out or not, when data is retrieved from the electronic scale, the data is retrieved from the electronic scale and the sales data is stored. is known to be printed out.

However, if such a device is used in a place where the printing of a product code is required, even though the product code must be printed on every receipt issued, receipts without a product code printed on them will be issued. There was a problem with the lack of practicality as there was a risk of the document being published.

This invention was made in view of these points,
When using an electronic scale, data cannot be retrieved from the electronic scale unless the product code is set as print data. The purpose of the present invention is to provide an electronic cash register that can be used in practicality without the risk of being issued.

A further object of the present invention is to provide an electronic cash register which achieves the above-mentioned purpose and is capable of issuing a receipt without a product code printed thereon by operating a switch.

Embodiments of the present invention will be described below with reference to the drawings.

First, the external appearance of an electronic cash register will be explained with reference to FIG.

In the figure, 1 is a housing. A display section 2 and a paper storage section 3 containing receipt paper and journal paper are provided at the top of the housing 1. The paper storage section 3 is provided with a receipt issuing port 31 and a window 32 for viewing the recorded contents of the journal paper at the lower front side. The receipt paper stored in the paper storage section 3 is issued from the receipt issuing port 31 after data is printed by the printer, and the journal paper passes under the window 32 after data is printed by the printer. The paper is wound onto a journal paper winding roll housed inside. Further, a keyboard 4 is provided on the front surface of the central portion of the housing 1, located below the display section 2. Arranged on this keyboard 4 are a number key 4a, a department key 4b, a scale key 4c for calling data from the price scale, and a cross key 4d that is operated when setting a product code. Further, a memo holder 5 is provided below the paper storage section 3. Furthermore, a drawer 6 is provided at the bottom of the housing 1, and a main switch 7, a scale presence/absence switch 8, and a product code presence/absence switch 9 are provided between the drawer 6 and the memo holder 5. The main switch 7 is the power source “0N” and “0FF”.
This is a control switch that executes the following tasks: ``registration'', ``setting'', ``inspection'', and ``payment'' when the power supply is ``ON''. The scale on/off switch 8 is a switch for setting the cash register in a state in which data can be exchanged with the fee scale, or in a state in which data cannot be exchanged. The product code presence/absence switch 9 sets the cash register in a state in which the price scale data can be printed out without printing out the product code, or in a state in which the price scale data cannot be printed out without printing out the product code. It is a switch that can be set to Next, the circuit configuration of the main part of the electronic cash register will be explained with reference to FIGS. 2 and 3.

In FIG. 2, 1c is a main switch input determination circuit that determines the operation content of the main switch 7 and transmits it to the central processing circuit (CPU) 11. Reference numeral 12 denotes a keyboard input determination circuit that determines the content of the operation on the keyboard 4 and transmits it to the central processing circuit 11.

Reference numeral 13 denotes a numeric data generator controlled by the central processing circuit 11, which generates numeric data based on the operation of the numeric key 4a on the keyboard 4.

The data generated from the numeric data generator 13 is stored in the numeric register 14 and is subjected to arithmetic processing through communication with the arithmetic register 15. The result of the arithmetic processing is then stored in the storage section 16. Further, the data stored in the storage unit 16 is subjected to arithmetic processing in the arithmetic register 15 by a call operation, and then called to the number register 14. On the other hand, the data stored in the number register 14 is called to the display print register 17,
It is displayed on the display unit 2 and printed out on a receipt and journal using the printer 18. In the figure, reference numeral 19 denotes a clock pulse generation circuit that generates a timing signal so that the keyboard input determination circuit 12 can determine which key has been operated on the keyboard 4. This circuit is provided with a control circuit 20, which is a feature of the present invention. This control circuit 20
As shown in the figure, it is formed from a memory circuit 21 and a memory state detection circuit 22. The front storage circuit 21 includes, for example, a number flip-flop 23, a code flip-flop 24, and a NO. It is formed of a flip-flop 25, and the numeric flip-flop 23 is set in response to a signal a from the numeric key 4a inputted from the keyboard 4. Further, the code flip-flop 24 is set and operated by the signal d of the cross key 4d inputted from the keyboard 4. Then, the AND gate 25 performs an AND operation between the set output of the numeric flip-flop 23 and the set output of the code flip-flop 24, and then combines the output of the AND gate 25 with the print ready signal Pr sent from the central processing circuit 11. Take it with the AND gate 26,
The output of the AND gate 26 is supplied to the printer 18 as a print command signal PO. The print command signal PO is also supplied to the numeric flip-flop 23 as a reset signal via the OR gate 27.
The code flip-flop 24 is supplied as a heliset signal. It should be noted that another key signal k is also input to the numeric flip-flop 23 via an OR gate 27 as a reset signal. Further, the print command signal PO and the scale presence signal S from the scale presence/absence switch 8 are ANDed by an AND gate 28, and the output of the AND gate 26 is passed through an OR gate 29 to the NO. It is supplied to the flip-flop 25 as a set signal. The scale presence/absence switch 8 generates a scale presence signal S when it is closed, and when it is in the open state, it is forcibly controlled so that the AND of the AND gate 28 does not hold. On the other hand, the product code no signal C from the product code presence/absence switch 9 is passed through the OR gate 29 to NO. The signal is supplied to the flip-flop 25 as a set signal. The product code presence/absence switch 9 generates a product code no signal C when it is closed. Therefore, the product code presence/absence switch 9 is closed when the product code does not need to be printed out.
Then, a print end signal Pe from the printer 18 is sent.
n as NO. It is supplied as a flip-flop 25 heliset signal. The memory state detection circuit 22 includes, for example, a scale flip-flop 30 and an AND gate 31, and the scale flip-flop 30 is set in response to the signal Sc from the scale key 4C. And said NO. flipflop 25
The set output of the scale flip-flop 30 and the set output of the scale flip-flop 30 are ANDed by an AND gate 31, and the output of the AND gate 31 is supplied to the central processing circuit 11 as a scale enable signal Se. The scale flip-flop 30 is reset by a scale end signal Sen from the central processing circuit 11. An electronic scale 32 is connected to such a cash register.

The electronic scale 32 is configured to exchange signals with the central processing circuit 11 via an interface 33. That is, when the scale enable signal Se is supplied from the central processing circuit 11 while the electronic scale 32 is in a state where data can be sent to the register side, the electronic scale 32 supplies the hereday signal Redy to the central processing circuit 11. Then, the clock signal CL is supplied from the central processing circuit 11 to the electronic scale 32, and the weight data from the electronic scale 32 is stored in the number register 14. Then, the weight data is processed in the calculation register 15 according to the unit price data per unit weight inputted in advance from the keyboard 4, and the sales data obtained as a result is stored in the storage section 16 and the display print register 17. is displayed on the display section 2 and printed out on the printer 18. Therefore, when registering data using the electronic scale 32, the main switch 7 is set to "registration" and the scale presence/absence switch 8 is closed.

If the user wishes to print out the product code on the receipt, the user further opens the product code presence/absence switch 9. First, the user operates the numeric keys 4a and the cross keys 4d on the keyboard 4 to set the product code. Thus, the number flip-flop 23 and the code flip-flop 24 are each set, and when a print ready Pr is generated from the central processing circuit 11, a print command signal PO is sent to the printer 18. On the other hand, the product code input from the keyboard 4 is stored in the display print register 17 and displayed on the display section 2. Then, the printer 18 is driven once and prints out the product code on the receipt and journal. Further, when the print command signal PO is generated, the number flip-flop 23 and the code flip-flop 24 are reset. Also, since the scale presence/absence switch 8 is now closed and the scale presence signal is being supplied to the AND gate 28, when the print command signal PO is generated, the AND gate 28 outputs NO. Flip-flop 25 is set. In this state, when unit price data is input by operating the numeric key 4a and department key 4b and further by operating the scale key 4c, a signal Sc is supplied from the central processing circuit 11 to the scale flip-flop 30 of the memory state detection circuit 22. Then, the scale flip-flop 30 is set. Therefore, the AND of the AND gate 31 is established, and the AND gate 31
A scale enable signal Se is supplied from the central processing circuit 11 to the central processing circuit 11 . The central processing circuit 11 sends the scale enable signal Se to the electronic scale 3 via the interface 33.
Supply to 2. Then, a ready signal Re is sent from the electronic scale 32.
dy is supplied to the central processing circuit 11, and the central processing circuit 11
A clock signal CL is supplied from the electronic scale 32. Therefore, the weight data from the electronic scale 32 is transferred to the number register 14.
be called to. Then, sales data is calculated from the weight data and unit price data inputted in advance and stored in the display print register 17. The sales data is displayed on the display section 2 and printed out on receipts and journals by the printer 18.
When the printer 18 finishes printing out the sales data, a print end signal Pen is generated from the printer 18, and NO. The flip-flop 25 is also set. On the other hand, a scale end signal Sen is generated from the central processing circuit 11, and the scale flip-flop 30 performs a setting operation. The product code and sales data are printed out on the receipt and journal. In addition, if you forget to set the product code and do not operate the cross key 4d while the product code presence/absence switch 9 is open, in this case, the memory circuit 2
Since the code flip-flop 24 of No. 1 is not set, the AND gate 25 does not open the gate, and the print command signal PO is sent from the memory circuit 21 to the printer 18.
will not be supplied. Therefore, the scale enable signal Se is not generated from the memory state detection circuit 22. Therefore, even if the user forgets to set the product code and operates the scale key 4c, weight data will not be read from the electronic scale 32 to the register side. That is, data exchange between the cash register and the electronic scale 32 is prohibited. In this way, when the product code presence/absence switch 9 is open, weight data is not read from the electronic scale 32 unless the product code is set, so there is no risk of issuing a receipt without a product code printed on it, so it is not practical. can improve sexual performance.

Therefore, when using this cash register in a place where printing of a product code is required, it is only necessary to open the product code presence/absence switch 9. Also, when the product code presence/absence switch 9 is closed, the NO. Since the flip-flop 25 is always in the set state, the memory state detection circuit 2 can be activated by operating the scale key 4c regardless of the setting of the product code.
2, the scale enable signal Se starts to be generated.

Therefore, in this case, a receipt without a product code printed on it can be issued, and even in places where printing a product code is not required, it can be used in an appropriate manner. The above control process is shown in a flowchart as shown in FIG.

It goes without saying that the circuit configurations of the memory circuit 21 and the memory state detection circuit 22 are not necessarily limited to those of the embodiments described above.

Furthermore, in the above embodiment, the product code is printed out and then the sales data from the electronic scale is printed out. However, the invention is not limited to this. For example, the product code is not printed out. It may be stored once and later printed out together with the sales data printed by the electronic scale.

As detailed above, according to this invention, when used together with an electronic scale, data cannot be retrieved from the electronic scale unless the product code is set as print data. It is possible to provide an electronic cash register that can improve practicality without the risk of issuing a receipt without a product code printed on it when used.

Furthermore, according to the present invention, when used together with an electronic scale, data cannot be retrieved from the electronic scale unless the product code is set as print data. It is possible to issue receipts without printed codes, and it is possible to provide an electronic cash register that can further improve practicality.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is a perspective view showing the external appearance, FIG. 2 is a block diagram showing the circuit configuration of the main part,
FIG. 3 is a circuit diagram of the control circuit, and FIG. 4 is a flowchart showing the control process. 4... Keyboard, 9... Product code presence/absence switch, 11... Central processing circuit, 20...
... Control circuit, 21 ... Memory circuit, 22
...Memory state detection circuit, 23, 24, 25, 3
0...Flip-flop, 32...Electronic scale.

Claims (1)

[Scope of Claims] 1. An electronic cash register connected to an electronic scale and capable of registering and processing data from the electronic scale, which is provided with a memory circuit for storing the product code when it is set as print data, A storage state detection circuit is provided for detecting the storage state of the storage circuit in response to an operation of reading data from the electronic scale, and when the setting state of the product code is stored in the storage circuit, the electronic scale reads the data from the electronic scale. The electronic cash register is characterized in that the data from the electronic scale is read in, and when the setting state of the product code is not stored in the storage circuit, the data from the electronic scale is prohibited. 2. In an electronic cash register that is connected to an electronic scale and can register and process data from the electronic scale, a memory circuit that stores the product code when it is set as print data, and reads the data from the electronic scale. A memory state detection circuit for detecting the memory state of the memory circuit in response to an operation, and a means for clearing the memory circuit in response to a data print operation subsequent to the product code print operation are provided. When the code setting state is stored, data is read from the electronic scale, and when the product code setting state is not stored in the storage circuit, data is prohibited from being read from the electronic scale. An electronic cash register characterized by: 3. In an electronic cash register that is connected to an electronic scale and can register and process data from the electronic scale, a memory circuit that stores the product code when it is set as print data, and reads the data from the electronic scale. A memory state detection circuit that detects the memory state of the memory circuit in response to an operation, and a switch that forces the memory state of the memory circuit to a product code setting memory state,
When the product code setting state is stored in the storage circuit, data is read from the electronic scale, and when the product code setting state is not stored in the storage circuit, data is read from the electronic scale. An electronic cash register characterized by prohibiting the call-in of cash registers.