JPS5816214B2 - Machine lock method of electronic cash register - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a machine lock system for electronic cash registers, and relates to a machine lock system for electronic cash registers. This invention relates to an ECR machine lock system that electronically locks the ECH function by not attaching a receiver.

Prior Art and Its Problems Conventionally, ECRs with excellent operating instructions and functions have been installed in supermarkets and the like.

The operator who operates such an ECR may be replaced, or may leave his/her desk to confirm the price of a product purchased by a customer if the price is unclear.

At this time, in order to prevent someone else from inadvertently operating the ECH keys and destroying the previously registered data, the ECR will not accept the input signal even if the keys on the ECR are operated by another person. is locked (machine lock).

Therefore, in the conventional ECR, a machine lock code (for example, roll) is input to enter the machine lock state, and when the machine is unlocked, a two-digit supervisor code is input to unlock the machine.

However, anyone could unlock the machine by entering a two-digit code, and it was not possible to completely lock the machine.

Purpose of the Invention Therefore, it is an object of the present invention to provide an ECR machine tampering system in which the machine lock can only be unlocked by the person who locked the machine, thereby preventing unauthorized persons from operating the keyboard. The main purpose is

Structure of the Invention To summarize, the present invention is to put the ECR into the machine lock state by inputting a machine lock number consisting of predetermined multi-digit numerical information using numerical keys, and pressing the machine lock key to specify the machine lock state. A machine lock number is stored in a machine lock number storage means in accordance with the operation, and the machine lock means is thereby energized to disable input of a function key.

When releasing the machine lock, input the machine lock number using the numerical keys, and in response to operating the machine lock key, the machine lock number set and stored in the storage means and the machine lock number input using the numerical keys are input. The machine locking state by the machine locking means is released in response to a match.

Effects of the Invention According to the present invention, the ECR can be placed in the machine lock state by inputting a secret machine lock number known only to an operator who can operate the ECR and storing it in the memory. The machine cannot be unlocked unless you enter the secret machine lock number that you entered when locking the machine.

Therefore, since the secret machine lock number cannot be known by anyone other than the operator, it is possible to prevent the machine lock of the ECR from being undesirably released by another person.

DESCRIPTION OF EMBODIMENTS FIG. 1 is a layout diagram showing a keyboard included in an embodiment of the present invention.

The operation of the ECR is controlled by keystrokes from the keyboard 1.

The keyboard 1 includes a mode setting switch 11 that also serves as a power switch.

This mode setting switch 11 is set to the OFF position to turn off the power, insert the key into the keyhole and turn clockwise, set the product registration operation mode at the REG position, and set the inspection mode at the X position. , Set the payment mode at the Z position.

Furthermore, this keyboard 1 includes function keys 12., which are composed of a person-in-charge key 121, a clear key 122, an exchange key 123, and the like. Numeric keypad 13, department key 14. It has calculation keys 15 including a deposit/cash total key 151 and a subtotal key 152.

The responsible person key 121 is a key that is operated when two-digit numerical information is input from the numeric keypad 13 in order to set a responsible person number, to identify that the numerical information is the responsible person number, When, for example, four-digit numerical information is input from the numeric keypad 13 to input a machine lock number, the key is also used as a machine lock key to specify that the numerical information is the machine lock number.

Further, the clear key 122 is a key for correcting input data when the numeric keypad 13 is operated incorrectly, and the exchange key 122 is a key for correcting input data when the numeric keypad 13 is operated incorrectly.
23 is for simply printing and recording only the exchange mark on the receipt when exchanging money.

The numeric keypad 13 is used to manually input the value of the price of each item purchased by the customer, as well as the person in charge number and machine lock number.

Further, the department key 14 is used to manually enter the department code of the item price.

The deposit/cash key 151 is used when a customer pays a high-value bill.
Commands calculation of change.

The subtotal key 152 is used for single item registration operations, total calculations, and other controls.

FIG. 2 is a schematic block diagram of an embodiment of the present invention.

Key input signals from the keyboard 1 shown in FIG. 1 are given to a central processing unit (hereinafter referred to as CPU) 2 for arithmetic control. clear key 1
22 and 13 are input signals from the keys K excluding the numeric keypad 13.

Each output signal to the key is gated G,. G2. ...Gn
is applied to one input terminal of

Each gate Gl, G2 . . . . A gate opening/closing signal, which will be described later, is applied to the other input terminal of Gn from the CPU 2.

The CPU 2 includes a read-only memory (ROM; not shown) in which a program for operating the ECR is preset and stored, and a comparator (to be described later) that compares the contents of a display register 31 with the contents of a machine lock number storage area 33. (not shown).

A memory 3 composed of a random access memory (RAM) or the like is provided in association with the CPU 2 for storing necessary data.

This memory 3 includes an area 31 as a display register for temporarily storing numerical information input from the numeric keypad 13, an area 32 for storing a two-digit person-in-charge number, and a four-digit area for placing the ECR in a machine lock state. an area 33 for storing the machine lock number of the ECR, and an area 34 as a machine lock state storage means for storing a machine lock flag (ML) that specifies that the ECR is in the machine lock state.
including.

Furthermore, a display 4 for displaying product registration data input into the CPU 2, and a printer 5 for printing and recording the product registration data are provided.

FIG. 3 is a flow diagram for explaining the operation of one embodiment of the present invention.

Next, with reference to FIGS. 1 to 3, a specific operation of an embodiment of the present invention will be described.

In the detailed description of the present invention, the person-in-charge keys 121 . Even if you operate a key K other than the clear key 122 and numeric keypad 13, the output signal from that key will be C.
The state in which the ECR is disabled by not being applied to the PU2 will be referred to as a machine lock.

First, the operation when setting and storing the responsible person number in the area 32 of the memory 3 will be explained.

It should be noted in advance that the operation of setting and storing the responsible person number is not the gist of the present invention.

First, insert the key into the mode setting switch 11 and turn it clockwise to set the X mode.

Then, the user manually enters the two-digit person-in-charge number using the numeric keypad 13.

In response, the CPU 2 determines whether or not a key has been operated (step 1).

If the key is not operated, it waits, and when it determines that it has been operated, it determines whether the key is the numeric keypad 13 (Step 2: When it determines that it is the numeric keypad 13,
It is determined whether the numerical value entered using the numeric keypad 13 is the eighth digit (step 3).

That is, for example, if the display digit of the display 5 is 8 digits, 8
If a numerical value of more than 1 digit is entered manually, the display will overflow, so in order to prevent overflow, it is determined whether the 8th digit has been entered.

If it is 8 digits or more, it is an overflow, so an error is displayed (step 4) and an alarm buzzer sounds (
Step 5).

If it is not the 8th digit, the first numerical value input from the numeric keypad 13 is stored in the display register 31 (step 6).

Then, the numerical value is displayed on the display 5 (step T: a confirmation sound is sounded to inform the operator that the numerical value has been input securely from the numeric keypad 13 (step 8).

In the above description, when inputting a two-digit supervisor number using the numeric keypad 13, if another key on the numeric keypad 13 is operated by mistake, the clear key 122 is operated.

In response, the CPU 2 determines that the operated key is not the numeric keypad 13 or the person-in-charge key 121 (steps 2 and 9), and determines whether the clear key 122 has been operated (step 23).

When it is determined that the clear key 122 has been operated, the display register 31 is cleared (step 24) and the display displayed on the display 5 is erased (step 25).

Then, the operator operates the numeric keypad 13 again and inputs the correct two-digit responsible person number.

Incidentally, if the G key is not the clear key 122 in step 23, it is determined whether the flag ML is logic "1" or not.

(Step 26) If the flag ML is logic "1", the machine is in a locked state and the process ends without performing any other operations.

If the flag ML is not logical rlJ, normal registration processing is performed (step 27).

That is, after inputting the individual item price information of the product purchased by the customer using the numeric keypad 13, the department key 14 is operated to input the department code, and the information is stored in an unillustrated single item registration information storage area of the memory 3.

Next, the operator operates the person-in-charge key 121 to specify that the two-digit number input using the numeric keypad 13 is the person-in-charge number.

In response, the CPU 2 determines that a key has been operated (step 1), and determines that it is not the numeric keypad 13 (step 2).
), it is then determined whether or not the person in charge key 121 has been operated (step 9).

In this case, it is the person in charge key 121, so next it is determined whether the numerical value stored in the display register 31 is two digits or not (step 10).

If it is a two-digit number, it is determined whether the ECR is in transaction (step 11).

That is, since the person in charge number is always input when the operator is replaced, setting the person in charge number is prohibited during a transaction.

If the transaction is not in progress, it is determined whether the mode setting switch 11 is set to the X mode.

If the mode is not the X mode, the operation ends, and if the mode is the X mode, it is determined whether the flag ML is set to logic "1" (step 13).

If the flag ML is logical "1", the machine is in a locked state, and the subsequent operations are terminated.

If the flag ML is not logical "1", the two-digit numerical information stored in the display register 31 is used as the responsible person number in the area 32.
The data is transferred to and stored (step 14).

Further, the person in charge number is printed and recorded on a receipt (not shown) by the printer 5 (step 15).

After clearing the display register 31 (step 16), the series of operations for setting and storing the responsible person number is completed.

If you want to set a supervisor number in this way, first enter the X mode and then enter the two-digit supervisor number using the numeric keypad 13.
．． are executed sequentially, and then when the person in charge key 121 is pressed,
Steps 1, 2, 9゜10.11, 12, 13, 14,
15 and 16 will be executed sequentially.

Next, the operation when setting and storing a machine lock number, which is a feature of the present invention, will be explained.

In the same manner as described above, the numeric keypad 13 is operated to enter four-digit numerical information and store it in the display register 31 (steps 1 to 8).

This four-digit numerical information is a number that can only be known by the operator operating this ECR, and is, for example, the numerical value of the month and day of the operator's birth.

Next, when the person in charge key 121 is operated, the CPU 2 determines that the key has been operated (step 1), determines that the key is not the numeric keypad 13 (step 2), and determines that the key is the person in charge 121 (step 2). 9) After determining that the numerical value is not two digits (step 10), it is determined that the numerical value is four digits (step 17).

Next, it is determined whether the flag ML is logical "1" (step 18).

If the ECR power button is not currently pressed, the flag ML is logic "0", and therefore the 4-digit numerical information stored in the display register 31 is used as the machine lock number in the area 33.
(Step 19).

Furthermore, the logic rlJ is stored as a flag ML in the area 34, and the CPU 2 machine-locks the ECR so that it will not accept input signals even if keys K other than the person in charge key 121, clear key 122, and numeric keypad 13 are operated. 20).

That is, in FIG. 2, in response to setting the flag ML to logic "1", the CPU 2 sends a gate "close" signal to each gate G1. G2. ...Send to Gn and prohibit key power from key K.

Furthermore, the four-digit numerical information stored in the display register 31 is cleared (step 16), and the series of operations for machine locking the ECR is completed.

When locking the machine in this way, by inputting the 4-digit machine lock number using the numeric keypad 13, steps 1, 2, 3, 6, 7, and 8 will be executed in sequence, and then by pressing the person in charge key 121. , steps 1, 2, 9, 10
．． 17, 18, 19° and 20.16 will be executed sequentially.

Next, the operation for releasing the ECR machine lock will be described.

In the same manner as described above, the operator inputs 4-digit numerical information as machine rank information using the numeric keypad 13 and stores it in the display register 31 (steps 1 to 8).
.

Next, when the person in charge key 121 is operated, the CPU 2 determines that the key has been operated (step 1), determines that the key is not the numeric keypad 13 (step 2), and determines that the key is the person in charge 121 (step 2). 9), to determine if the number is not 2 digits, step 10), if the number is 4
After determining that it is a digit (step 17), it is determined whether the flag ML is logical "1" or not.

(Step 18). In this case, the ECR is already in the machine lock state, so the flag ML is logic "1".

Therefore, the process moves to step 21, where the four-digit numerical information stored in the display register 31 and the machine lock number stored in the area 33 of the memory 3 are compared to determine whether they match.

This determination is made by the aforementioned comparator.

If they do not match, it is determined that the numerical information input from the numeric keypad 13 is not the machine lock number, that is, the operation was performed by a person other than the operator who locked the machine, and the operation is terminated without releasing the machine lock.

If they match, CPU2 sends the gate “open” signal to gate G.
1. G2. ...Give to Gn to open each gate.

At the same time, the flag ML stored in the area 34 is cleared to logic "0".

As a result, key input from key K of keyboard 1 becomes possible, and the machine lock of the ECR is released (step 22).

Further, the CPU 2 clears the four-digit numerical information stored in the display register 31 (step 16) and completes a series of operations for releasing the machine lock.

In this way, to unlock the machine, use the numeric keypad 13 to re-enter the same 4-digit machine lock number as when locking, and step 1゜2.3, 6, 7, 8
．． are executed sequentially, and then when the person in charge key 121 is pressed,
Steps 1, 2, 9゜10.17, 1B, 21, 22,
16 will be executed sequentially.

In the above embodiment, the person in charge key 121 is used as the machine lock key, but it may be used as another function key if it can be distinguished by, for example, the number of digits to be input.

Further, a machine lock key may be provided individually without being used in combination with other function keys.

[Brief explanation of drawings]

FIG. 1 is a layout diagram of a keyboard included in one embodiment of the present invention. FIG. 2 is a block diagram of an embodiment of the present invention. FIG. 3 is a flow diagram for explaining the operation of one embodiment of the present invention. In the figure, 1 is the keyboard, 11 is the mode setting switch, 12 is the function switch, 121 is the person in charge key (machine "sick key"), 13 is the numeric keypad, and 2 is the CP
U, 3 is a memory, 31 is a display register, 32 is a supervisor number storage area, 33 is a machine lock number storage area, 34 is a flag ML storage area, 4 is a display, 5 is a printer, G,
, G2°...Gn indicates a gate.

Claims (1)

[Scope of Claims] 1. In an electronic cash register including numerical keys and a function key for processing single product registration information, the electronic cash register is placed in a machine lock state by disabling input of the function key. A machine locking means for setting the machine locking state, a machine locking key for commanding the machine locking state, a storage means for setting and saying a predetermined multi-digit machine locking number for specifying the machine locking state, and an electronic cash register in the machine locking state. the machine lock number is input using the numeric key and the machine lock key is operated. In some cases, the machine lock number is stored in the storage means, thereby instructing the machine lock means to operate the machine lock, and the discriminating means determines that the machine lock is in the state, and the numerical value is When the machine lock number is input using a key and the machine lock key is operated, the machine lock number set and stored in the storage means is compared with the machine lock number input using the numerical key. There is also a machine locking method for an electronic cash register, characterized in that the machine locking state by the machine locking means is released in response to matching of both bank plates.