KR910007768B1 - Mode controlling method of cash register - Google Patents

Abstract

The method is for inputting code to protect the mode change or to release the mode change protect and for checking the possbility of mode change. The method comprises steps: (A) controlling the mode change according to a first and a second flag of next mode; (B) scanning key input to check the code process mode when no mode change or normal mode change is occured and executing the corresponding mode; (C) storing the code of the corresponding mode when code input key is depressed, setting the first flag to mask, and returning to the step (A); and (D) setting the second flag according to the stored code and a received code when the code release key is input and returning to the step (A).

Description

Control method of cash register mode

1 is a system block diagram of a cash register for carrying out the invention.

2 is a flow chart of the present invention.

3 is a flowchart of a code input process in FIG.

4 is a flow chart of the decryption process of FIG.

5 is a flowchart of a second middle mode analysis process.

6 is a buffer configuration diagram used in the present invention.

* Explanation of symbols for the main parts of the drawings

11: central processing unit 12: ROM

13: ram 14: keyboard

15: display portion 16: printing portion

The present invention relates to a method for controlling a mode of a cash register, and more particularly, to a method for controlling mode movement by enabling masking or unmasking of a predetermined mode.

In general, the cash register can register a registration mode (R mode) for registering and processing transaction information generated at the point of sale, an inspection mode (X mode) for checking transaction information stored in the memory, and transaction information. There is a mode switch that can designate a Z mode, a program mode in which the selling price, discount items, and the like can be preset. In the check mode of the above modes, only the accumulated information in the memory can be checked. Therefore, the accumulated information in the memory is maintained. In the settlement mode, the accumulated information in the memory is settled and then changed. Only certain people (master level) should be able to perform this mode. In addition, in the program mode, it is possible to preset the selling price and product information on the discount period, so this mode should also be executed only by certain people.

In the conventional cash register, a mechanical mode shifting method using a key key is used for mode selection as described above. In this case, a method of restricting the mode selection by dividing the key into various types or covering the mode key itself is applied. The owner used a key, such as a key on the case.

Another method was to select a mode using a slide switch. However, the former method was mechanical, so it was inconvenient to use, and it could damage the cash register and it was not good at all. The latter method could be used by anyone to change the mode freely. There was a problem such that the purpose of use of the cash register is impaired due to the ease.

Accordingly, an object of the present invention is to provide a method for inputting a code for limiting mode movement in a predetermined mode of a cash register or for releasing a mode movement restriction state by an input code.

Still another object of the present invention is to provide a method for controlling mode shift by checking whether a function is changed for a corresponding mode when a mode is changed.

Hereinafter, the present invention will be described in detail with reference to the drawings.

1 is a system block diagram of a cash register for carrying out the present invention, which includes a central processing unit 11 for controlling the overall operation of the cash register, a ROM 12 storing a cash register program, and a program during execution. A RAM 13 for storing data, a keyboard 14 for designating various key commands and modes, a display unit 15 for displaying transaction information under the control of the central processing unit 11, and the central processing unit. Under the control of (11) is composed of a printing unit 16 for generating a receipt according to the transaction information.

2 is a flow chart of the present invention, the first step of controlling the mode movement state according to the state of the first flag and the second flag of the corresponding mode to be changed at the time of changing and checking the mode change, and the mode change in the first step The second process of performing a function of the corresponding mode and the second process of performing a function of the corresponding mode, and checking whether a code processing mode temporary input key is generated in the second process. A third step of setting the first flag for masking and simultaneously storing the code input value of the corresponding mode and returning to the first step; and checking the code input key temporary decode key in the third step A fourth step of setting the second flag for releasing the corresponding mode according to the state of the stored code and the received code value only at a key date and time and returning to the first step; Achieved.

FIG. 3 is a detailed flowchart of the code input process of FIG. 2, FIG. 4 is a detailed flowchart of the code decryption process of FIG. 2, and FIG. 5 is a detailed flowchart of the mode change state analysis process of FIG.

FIG. 6 is a buffer configuration diagram used in the present invention. In (6A), a flag of Z mode masking (FZM) is set when a key for restricting a Z mode (hereinafter referred to as an "R" key) is input, and a flag of FPM (Flag of P mode Masking) is set when a key for limiting the P mode (hereinafter referred to as the "S" key) is set, and a Flag (Z) (Flag of Z mode clear) key for releasing the Z mode restriction (hereinafter referred to as the "T" key) It is set at the input, and the FPC (Flag of P mode Clear) is set at the time of input of a key (hereinafter referred to as "Q" key) for releasing the P mode restriction.

Therefore, in Z mode, FZM becomes the first flag, FZC becomes the second flag, in P mode, FPM becomes the first flag, and FPC becomes the second flag. In addition, FZC or FPC is set only when the code input value (that is, the stored password: an1-an4) and the reception code value (am1-am4) are the same when the "T" key or the "Q" key is pressed. Reference numeral 6B denotes a code buffer, in which the Z code buffer is an area for storing code input values for limiting the Z mode, and the P code buffer is an area for storing code input values for restricting the P mode. Here, the code input means a decimal number (an1-an4) less than 4 magnetic digits stored in a memory to control each mode and is generated according to a key input combination. 6C is a buffer for storing a flag value corresponding to each mode (hereinafter referred to as F mode buffer), which is set to recognize the mode switch when it is determined that the movement is normal by the mode check when the mode switch is moved.

Based on the above configuration, the present invention will be described in detail with reference to the first, second, third, fourth, fifth, and sixth degrees.

The cash register keyboard 14 is composed of a key matrix for generating various key commands and a mode switch for designating a cash register mode. The mode switch of the keyboard 14 can designate the R mode, X mode, Z mode and P mode functions as described above as in 1A.

At the first power-on, the central processing unit 11 initializes the cash register in step (A1) and checks whether there is a mode change in step (A2). It is analyzed whether it has moved from the state or the mode movement limit state. The operation process of step (A2) will be described in detail later in the flowchart of FIG. 5 to be described later. In this step, if there is no normal mode shift or mode change, the operation can be performed in step (A3) and then in step (A4). Check if the mode of is in code processing mode. Here, the code processing mode may add a separate code processing mode on the mode switch, or may be used by designating an arbitrary mode among the existing modes. The present invention will be described on the assumption that it can be executed in the X mode. Therefore, when the mode switch is not in the X mode in step (A4), the function of the mode is processed in step (A5). That is, the R mode, the Z mode, or the P mode may be performed. Information generated at this time is displayed through the display unit 15 and the print unit 16.

When the mode switch is located in the X mode in the step (A4), it is checked in the step (A6) that the "R", "S" key for the code input, the "R", "S" through the keyboard 14 If a key is input, the code input is processed in the flow of FIG. 3 in the step (A7). First, in step (B1), the central processing unit 11 checks whether a numeric key has been entered so that a password for mode shift restriction can be specified through the keyboard 14, and if four or fewer numeric keys are entered (B2). In step S, the FZM and FPM of (6A) are set according to the "R" and "S" key inputs, and the input numeric keys are stored in the Z code buffer and the P code buffer of (6B). At this time, in step (A6), the "R" and "S" keys may be simultaneously input, and only one "R" or "S" key may be input. The R key is a Z mode input key and the S key is As it is a P code input key, in step (B2), FZM and FPM for mode masking are set according to the code input, and the input numeric key values are stored in the Z and P code buffers, and then returned to the main routine.

At this time, if there is no input number key in step (B1) (an = 0), it is the case that there is no restriction on mode position movement when changing mode, and according to the state of R, S code input key in step (B3). Reset FZM and FPM, write "0" to Z, P code buffer and return to main routine. In this case, anyone can operate the mode switch to the desired mode.

At this time, if the code input key is not in step (A6), it is checked whether the "T" and "Q" keys are input for code release in step (A8), and if the code release key is generated, step (C1) Compares the numerical value (an1-an4) stored in Z code buffer and P code buffer of (6B) with the current input numerical value (am1-am4) in (6B), and if it is the same, release the mode in (C2) Set the flags for FZC, FPC and return to the main routine. In this case, in step (A8), when the code release key is generated, the "T" and "Q" keys may be simultaneously generated, and only one "T" or "Q" key may be generated. The "T" key is a Z code release key. Since "Q" key is P code release key, FZC and FPC are set to release mode movement restriction according to code release key and then return to main routine.

In this case, when the code value stored in the Z code buffer and the P code buffer is different from the current reception value in the step (C1), the code release input is incorrect. Therefore, the corresponding flag is reset and an error tone is generated. Then return to the main routine.

If it is not the code release key in step (A8), since the code input and release keys are not generated in the X mode which is the code processing mode, the function of the X mode is performed in step (A10).

While performing the above flow, the mode change state is analyzed as the flow as shown in FIG. 5 as described above. First, in step (D1), the central processing unit 11 checks whether a mode change of the previous state and the present state has occurred, and returns to the main routine when no mode change occurs.

At this time, when the mode change occurs in the step (D1), it is checked whether it is changed to the R or X mode in the step (D2). When the mode is changed to the R or X mode, the FZC and FPC of (6A) are cleared in the (D3) step. In step (D4), input R or X to F mode buffer of (6C). At this time, since the R mode is a registration mode, it does not restrict the mode movement so that anyone can execute it, and the X mode does not change only the inspection information accumulated in the RAM 13 as the inspection mode, but does not change the mode movement when moving to both modes. Don't let that happen. In addition, when changing to R or X mode, the reason of resetting FZC and FPC is that the master user who can limit the mode change in Z mode or P mode uses the cash register as Z mode or P mode function in all states. This is to cancel the previous mode (P or Z mode) function when returning to X or R mode.

At this time, if it is not in R or X mode in step (D2), it is checked whether it is changed to Z mode in step (D5), and in Z mode date and time, the FZC of (6A) is analyzed in step (D6). In the release state (FZC), enter Z into the F mode buffer of (6C) in step (D7) to enable the cash register to operate in Z mode and return to the main routine. However, when the FZC is in the reset state in step (D6), the state of the FZM is analyzed to analyze whether the Z mode movement is restricted in the step (D8), and the movement to the Z mode is masked when the FZM is in the set state. Since it is a state, it handles an error and returns to the main routine.

At this time, since in step (D6) and (D7), the user does not mask the Z mode in the reset state date and time in the FZC and FZM everyone can jointly change the mode of the cash register.

At this time, if the mode is not changed to the P mode in step (D5), the mode is changed to the P mode. In step (D9), the FPC state of (6A) is analyzed. Save to enable the cash register to operate in P mode and return to the main routine. However, in step (D9), the FPC checks whether the FPM is in the set state at the time of the reset state. In step (D11), the FPM is masked to limit the movement of the P mode at the set state. In this reset state, the mobile station does not move to the P mode as described above, so that P is stored in the F mode so that the P cash register can operate in the P mode and returns to the main routine.

Therefore, in the mode change analysis process, a code value is input in the code input process of step (A7), and a code value stored to move to a desired position among Z and P modes controlled in the code release process of step (A9). Analyze whether or not to allow the movement state of Z mode and P mode by analyzing the state of inputting the same number as, and to determine the normal operation in each mode. If the previous state is changed to X mode from another mode, clear the mode release flag (FZC, FPC). On the other hand, if the FZC flag is set in X mode when it is moved to Z mode in another mode, it is allowed to operate in Z mode by entering Z in F mode.If the FPC flag is set when P mode is set, P is set in F mode. Input to allow operation in P mode.

As described above, in the cash register using the free-moving mode selection (slide switch, etc.), the use of the mode can be restricted as needed when the mode is designated, and thus the cash register can be efficiently used. Since it can be executed using a flag without a device, there is an advantage that it is possible to easily limit the use of the mode and to improve reliability.

Claims (1)

A method of controlling a cash register in a mode, the method comprising: a first step of controlling a mode moving state according to a predetermined first flag and a second flag state of a corresponding mode to be changed when the mode is changed and the mode is changed; The second process of performing the function of the corresponding mode and the second process of performing the function of the corresponding mode, and checking whether or not the code processing mode date and time input key is generated in the fourth process. A third step of setting the first flag for masking and simultaneously storing the code input value of the corresponding mode and returning to the first step; and checking whether the code input key is temporarily decoded at the third step A fourth step of setting the second flag for releasing the corresponding mode according to the state of the stored code and the received code value only at a key date and time and returning to the first step Mode control method of the cash register, characterized in that made in the process.

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