JPH04217099A - Data processor - Google Patents

Abstract

PURPOSE:To prevent the illegality by warning a fact that there is possibility of an illegal correction to an operator by generating a warning sound by a buzzer for several seconds, in the case a second clear key is operated at the time of being not in an error. CONSTITUTION:An input detecting means 1 detects an input error in an input means. A correcting means 2 corrects a registration inputted by the input means. When the registration is corrected by the correcting means 2 in the case the input error is not detected by the input error detecting means, an informing means 4 reports this state. That is, when the input error by the input error detecting means 1 is not detected, when the registration is corrected by the correcting means 2, the informing means 3 generates a warning sound by a buzzer and reports this state. In such a way, when there is possibility that illegality is executed, a warning can be given directly to an operator and a responsible person, etc., ad illegality can be prevented in advance.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to data processing devices such as electronic cash registers and POS registers that can prevent unauthorized input corrections.

0002

[Prior Art] Conventionally, in data processing devices such as electronic cash registers and POS registers used in supermarkets, etc., after inputting amount data by operating number keys, a clear key is pressed instead of a registration key. If you operate it,
To the customer, it appears as if the entered amount has been registered. However, since the entered number data is cleared by the above input correction, it is not registered as sales data. For this reason, there is a risk of fraud in which the operator embezzles the amount received from the customer by making it appear as if the entered amount has been registered but not actually registering it.

0003

[Problems to be Solved by the Invention] In order to prevent such fraud, there has conventionally been a method of recording the operation status on journal paper when the clear key is operated. However, with this method, the journal papers were inspected later, so they could only be used as a reference to indicate that fraud had been committed, and could not be expected to be effective in preventing fraud.

[0004] An object of the present invention is to provide a warning when fraud is likely to be committed.

[0005]

[Means for Solving the Problems] The means of the present invention are as follows. Input error detection means 1 (see the functional block diagram of FIG. 1, the same applies hereinafter) detects input errors in the input means. The correction means 2 corrects the set number input by the input means. The notifying means 3 notifies this state when the correcting means 2 corrects the input number when no input error is detected by the input error detecting means 1.

[0006]

[Operation] The operation of the means of the present invention is as follows. When no input error is detected by the input error detection means 1,
When the number is corrected by the correction means 2, the notification means 3
For example, a buzzer generates a warning sound to notify this state. Therefore, a warning can be given if fraud is likely to be committed.

[0007]

[Embodiment] An embodiment will be described below with reference to FIGS. 2 and 3. Note that this embodiment is applied to an electronic cash register. FIG. 2 is a block diagram showing the circuit configuration of the electronic cash register. In the figure, the key input section 11 is a department key 11a for performing departmental registration.
, a numeric keypad 11b for inputting numerical data such as "0" to "9", and a function key 11 for specifying various functions.
c, clear key 11d, and PL for performing PLU-specific registration.
U key 11e and "Z (Payment)""X(Inspection)""OF
A mode switch 11f for specifying each mode such as "F", "REG (registration)", "P (setting)", etc. is provided. When a key is operated on the key input section 11, a key input signal corresponding to the key operation is sent to the CPU via the input control section 12.
13.

The CPU 13 has a built-in numeric key input flag 13a, and executes various processes such as numeric entry processing, registration processing, error processing, etc. in response to the input key input signal. These various processes are executed based on a control program stored in the ROM 14 in advance. In addition to the input control unit 12 and the ROM 14, the CPU 13 also includes a RAM 15,
A display drive section 17, a print control section 19, a drawer 20, and a buzzer 21 are connected.

The RAM 15 has data written/read under the control of the CPU 13, and includes a department memory 15a, a PLU memory 15b, another memory 15c, and a clear key counter 15d. The display section 16 is composed of, for example, a CRT display device, and the CPU
Based on the display data outputted from 13 via the display drive section 17, the amount of money to be placed, the amount of money to be deposited, etc. are displayed. Printing section 1
8 issues a receipt and a journal based on the print data outputted from the CPU 13 via the print control section 19. The drawer 20 is for storing various cash, and the CPU 1
It is released by the control of 3. The buzzer 21 generates a warning sound in response to a drive signal output from the CPU 13.

Next, the operation of this embodiment will be explained based on FIG. 3. FIG. 3 is a flowchart showing the operation of key scan processing. First, in step S1, it is determined whether or not it is after the numeric key entry, that is, whether the after numeric key entry flag 13a is set. If YES in step S1, the process proceeds to step S2; if NO, the process proceeds to step S4. Initially, since nothing has been input, a negative determination is made in step S1, and the process proceeds to step S4. Step S4
Then, it is determined whether or not a key has been pressed, that is, whether or not a key has been operated on the key input unit 11. If YES in step S4, the process advances to step S5; if NO, the process returns to step S1.

[0011] Here, it is assumed that, for example, the number "100" is input by operating the numeric keypad 11b. As a result, the answer is YES in step S4, and the process proceeds to step S5. In step S5, the input key is a numeric key (numeric keypad 11b
) is determined. If YES in step S5, the process proceeds to step S6; if NO, the process proceeds to step S8. In this case, since the numeric key was input, Y is entered in step S5.
The result is ES and the process proceeds to step S6. In step S6, the after-number-key flag 13a is set (ON), and the process proceeds to step S7. In the numeric key processing in step S7, the input numeric value is taken into an input register (not shown) in the CPU 13, and the process returns to step S1.

[0012] Returning to step S1, it is determined whether or not after the numeric key is entered in the same manner as above, and in this case, the answer is YES and the process proceeds to step S2. In step S2, it is determined whether a certain period of time, for example 10 seconds, has elapsed after the input of the numeric key. This is to warn the user, since it is unnatural for a certain period of time to pass without inputting a registration-related key after inputting a numeric key. Here, if the operator attempts to commit fraud and a certain period of time has elapsed after inputting the numeric key, the answer is YES in step S2 and the process proceeds to step S3. In step S3, a drive signal is output to the buzzer 21 to generate a warning sound for several seconds to warn the operator. As a result, an operator who attempts to commit fraud can either stop the act or be warned by a manager to prevent fraud. Further, if a certain period of time has not elapsed since the input of the numeric key in step S2, the determination is NO and the process proceeds to step S4.

[0013] Also, the department key 11a, the PLU key 11e
If a registration-related key such as , etc. is input, the process proceeds from step S4 to step S5, and in step S5, since it is not a numeric key, it is determined as NO, and the process proceeds to step S8. In step S8, it is determined whether the input key is a registration related key. If YES in step S8, step S
The process proceeds to step S9, and if NO, the process proceeds to step S14. In this case, the answer is YES in step S8 when the registration related key is input, and the process proceeds to step S9. In step S9, it is determined whether the after-number-key flag 13a is ON. This step S9 is a process for detecting input errors. That is, in step S9, if the registration related key is not input after the numeric key, the input order is incorrect, and this is detected. If YES in step S9, the input order is correct, so proceed to step S11; if NO, step S1
Proceed to error handling for 0.

If the input order is wrong, the process advances from step S9 to step S10, where an error flag (not shown) is set, and a drive signal is output to the buzzer 21 to generate a warning sound to notify the operator of the error condition. Then, the process returns to step S1.

If the input order is correct, that is, if the registration related key is input after the numeric key, the process advances from step S9 to step S11. In step S11, the after-number-key flag 13a is reset (turned OFF) and the process proceeds to step S12. In step S12, the clear key counter 15d of the RAM 15 is reset. Next step S1
In step 3, a registration process is performed and the entered amount data is registered in the department memory 15a or PLU memory 15b, and the process returns to step S1.

Next, when the clear key 11d is operated, the process advances from step S4 to step S5, and step S
5 and S8 are respectively determined as NO, and the process proceeds to step S14. In step S14, it is determined whether the clear key 11d has been operated. If YES in step S14, the process advances to step S15, and if NO, the process returns to step S1. Since the clear key 11d has now been operated, YES is determined in step S14, and the process proceeds to step S15. In step S15, it is determined whether an error is occurring, that is, whether an error flag is set. If it is determined in step S15 that an error has occurred, the process proceeds to clearing processing in step S16. In this clearing process, the numeric data and error flag stored in the input register are cleared, the error state is released, and the process returns to step S1.

However, if the determination in step S15 is NO, it is unnatural for the clear key 11d to be operated when no error is occurring, so the process advances to step S17. In step S17, the clear key counter 15d is set to +
1 to set it as "1" and proceed to step S18. Step S
At step 18, it is determined whether the contents of the clear key counter 15d are "2" or more. That is, the clear key 11d is allowed to be operated only the first time when no error is occurring. NO in step S18, that is, clear key counter 1
If the content of 5d is "1", the process advances to clearing processing in step S16. Further, if it is determined as YES in step S18, it is an invalid input correction, so step S19
Proceed to. In step S19, similarly to step S3, a drive signal is output to the buzzer 21 to generate a warning sound for several seconds to warn the operator that the input correction is incorrect. As a result, an operator who attempts to commit fraud can either stop the act or be warned by a manager to prevent fraud.

[0018] In the above embodiment, the clear key 11d is allowed to be operated only once when no error is occurring, but this is not limited to this.
When d is operated, the buzzer 21 may immediately generate a warning sound to notify of an incorrect input correction. Furthermore, the method of notifying the user of incorrect input correction is not limited to issuing a warning buzzer, but may also include, for example, lighting a warning lamp or the like.

[0019]

According to the present invention, when fraud is likely to be committed, it is possible to generate a warning sound using a buzzer, for example, to directly give a warning to an operator, a person in charge, etc., thereby preventing fraud.

[Brief explanation of the drawing]

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

FIG. 2 is a block diagram showing the circuit configuration of an electronic cash register.

FIG. 3 is a flowchart showing the operation.

[Explanation of symbols]

1...Input error detection means 2... Correction means 3...Notification means 11...Key input section 12...Input control section 13...CPU 14...ROM 15...RAM 16...Display section 17...Display control section 18...Printing section 19...Print control section 20...Doroa 21...Buzzer

Claims (1)

[Claims] [Claim 1] Input error detection means for detecting an input error in the input means; correction means for correcting a numeric value input by the input means; A data processing device characterized by comprising: notifying means for notifying a state when a number has been corrected by the correcting means.