JPS60225277A - Password number input device - Google Patents

Abstract

PURPOSE:To improve the safety for input of password numbers to prevent input errors by changing the arrangement of function displays of individual key switches into randam each time when a password number is inputted and displaying the input number. CONSTITUTION:A transparent keyboard part 2 and a display part 4 are constituted into one body together with a directivity giving device 7. When an input command is inputted, the guide requesting the password number input is displayed in display digits D1-D6 and a display digit D12 is flickered to ask a customer to operate a key switch K12. When the key switch K12 is operated, an input/output control part 3 accesses a random number generator in order from the display digit D1 for the purpose of setting a key arrangement for password number input to display digits D1-D9 and D11. Numbers selected by the random number generator are displayed successively in display digits D1-D11, and they are stored in a key retrieval table.

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a PIN number input device, and in particular, it is provided in an automatic teller machine, an automatic teller machine, etc., and is used to input a PIN number with a predetermined number of digits. This invention relates to an improvement in a password input device used.

(Description of the Prior Art) Conventionally, in automatic teller machines, automatic teller machines, etc., it has been common to enter a password using a numeric keypad. However, because the layout of the 0 to 9 keys on the numeric keypad is fixed, even people around the person who is inputting the PIN number can easily read the number entered by the operator's finger movements. I understand. If the password is known to someone else, there is a problem that it may be used illegally, such as when the magnetic cart 9 is stolen.

In addition, conventional PIN input devices do not have a function to confirm the input number, so if you repeatedly enter the wrong number two or three times,
There were problems such as being forced to stop transactions or being treated as a criminal.

(Object of the invention) The object of the invention is to
To prevent a personal identification number from being easily discovered by people around the personal identification number input device, and to provide an input number confirmation function for confirming the input number.

(Configuration and Effects of the Invention) To summarize the invention, there is provided a plurality of key switches for inputting a password, and a function for displaying the function or input number of each key switch corresponding to each of these key switches. A display means is provided, and each time a password is input, the arrangement of the function display of each key switch on the display means is randomly changed, and a key output signal corresponding to the function of the operated key switch is derived, and the input number is This allows the input number to be displayed for confirmation.

Therefore, according to this invention, the function display of the key switch is not fixed and changes randomly each time the customer enters the PIN number, so even if someone else knows the movement of the customer's finger, no one else can The next time the user enters the PIN number, the function display is changed randomly, so there is no fear that the PIN number will be known. Therefore, it is possible not only to improve the safety when entering the PIN number, but also to prevent secondary crimes caused by theft of the PIN number.

In addition, since it is possible to confirm the input number, it is no longer necessary to enter a PIN number incorrectly too many times and be forced to cancel the transaction. Therefore, it is not only possible to provide more friendly service to customers, but also to prevent customers from being treated as criminals and damaging their social status and honor by canceling transactions.

(Description of Embodiments) The present invention will be described in more detail below with reference to embodiments shown in the drawings.

FIG. 1 is a schematic block diagram of an embodiment of the present invention.

The PIN input device 1 shown in FIG. 1 is installed in an external device such as an automatic teller machine or an automatic teller machine. Used only for entering numbers.

In FIG. 1, a password input device 1 is a keypad Y section 2.
It consists of an input/output control section 3 and a display section 4, and the input/output control section 3 receives an input command signal from a CPU built in an external device via an input line 5, and receives an input PIN code. is provided to the CPU via output line 6.

FIG. 2 is an exploded perspective view of one embodiment of the present invention. Second
In the figure, the keyboard section 2 and display section 4 shown in FIG. 1 described above are integrally constructed together with the directivity imparting device 7. The keyboard unit 2 is composed of a transparent flat keyboard 9 including key switches 1 to K and 12 arranged in a 3×4 matrix configuration. Further, the display section 4 uses a liquid crystal panel having a dot matrix structure, and display digits DI to DI2 are arranged on this liquid crystal panel in correspondence with each of the key switches 1 to 12 of the keyboard 9 section 2. . These display digits DI to D12 are
Due to the dot matrix configuration, not only numbers 0 to 9 but also katakana, alpha, and some special characters are displayed. In this embodiment, when idling, the special character: [CLJ is displayed as a clear key in the display digit DIO, and rEJ is displayed as an entry in the display digit DI2, and when both are displayed, the power is on. It shows.

The directivity imparting device 7 is arranged between the keyboard 9 section 2 and the display section 4. This directivity imparting device 7 has a rectangular hole formed corresponding to each display digit D to D12 of the display section 4, and displays information from the transparent keyboard 9 section 2 via this directivity imparting device 7. When looking at the display on section 4, the display cannot be seen unless it is within a certain angle range from the vertical direction.

The light 8 is used to prevent the surface of the display section 4 from becoming dark due to the directivity imparting device 7 and making the display difficult to see. The display is easy to read.

3A to 3J are diagrams showing display examples of an embodiment of the present invention, and FIG. 4 is a diagram showing a key search function 31 included in the input/output control section 3 shown in FIG. 1. , FIG. 5A, and FIG. 5B are flowcharts for explaining the specific operation of an embodiment of the present invention.

Next, the specific operation of one embodiment of the present invention will be described with reference to FIGS. 1 to 5B.

When the input/output control section 3 is powered on, it displays 'CL' on the display digit DIO of the display section 4 and 'E' on the display digit D12, as shown in FIG. 3A. Notify the controller that it is powered on. continue,
The input/output control section 3 determines whether or not an input command 9 is given from the CPU of the external device through the input line 5.

If input command 9 is not given, the system waits until input command 9 is given, and when input command 9 is entered, a guide to enter the password is displayed on display digits D to D6, and display digit DI2 is blinked. Ask the customer to perform 12 operations on the key switch. This state is shown in FIG. 3B. When 12 is operated on the key switch, the input/output control unit 3 accesses the random number generator in order from the display digit D1 in order to set the key arrangement for entering the password in the display digits DI to D9 and Dll. .

The random number generator is configured, for example, by a program as shown in FIG. 5B, and determines whether there are any numbers to be deleted. This determination step is provided because it is necessary to display numbers other than those already displayed.

In the initial state, no numbers are displayed yet, so one arbitrary number is selected at random from the target numbers 0 to 9 and output.

In this example, the number 1141+ is first selected.

Therefore, as shown in FIG. 3C, °'4'' is displayed as the number A in the display digit DI.Then, the input/output control unit 3 uses the address °'01 of the key search table shown in FIG.
"°°4" is stored as the number A. Then, delete 4' as the number A from the random number generator. Furthermore, the input/output control section 3 accesses the random number generator in order to display the next number on the display digit D2. The random number generator deletes the digit ``4'' displayed in the display digit D1 and randomly selects one arbitrary digit from among the other target digits.

In this embodiment, for example, °゛7'' is selected as the next number and 1171+ is displayed in the display digit D2 as shown in FIG. Then, the input/output control unit 3 deletes the already displayed 7" from the random number generator. Then, the input/output control unit 3 accesses the random number generator to obtain the number to be displayed in the display digit D3. The random number generator selects II OII, for example. Input/output control unit 3
causes the selected "0" to be displayed in the display digit D3. Then, enter 0 as the number C in address 9 address 03 of the key search table.
Memorize ″°.

Thereafter, the above-described operation is repeated to sequentially display the numbers selected by the random number generator in the display digits D4 to D9 and Dll, and to store each number in the key search table. When different numbers are displayed in all the display digits DI to D12 of the display section 4, as shown in FIG. 3F, 4,
7,0,1°8.3,9,2,6.5 are displayed. When numbers and symbols have been displayed on all display digits D to DI2, the password can be entered from the keyboard section 4.

Next, the method of inputting the password will be explained.

First, 1 is set as the count value n of the display digit number counter. Although this display digit number counter is not shown, it is included in the input/output control section 3. When a customer operates any one of the key switches 1 to 12 included in the keyboard section 2, a key code signal is given to the input/output control section 3 from the key switch. The input/output control unit 3 determines that there is a human key force based on the key code signal.

Then, it is determined whether the key code 9 signal is the key code signal of the key switch KIO, and the key code 9 signal is the key code signal of the key switch KIO.
If it is not an IO key code signal, it is determined whether the key switch is a 12 key code signal. If the key code signal from 12 is not sent to the key switch, it is determined whether the key code signal is 1 to 9 or Kll for that key switch.

If the first operated key switch is 1, the input/output control unit 3 reads numerical data II 411 from address 9 address 01 of the key search table corresponding to the key code 9 signal of 1 for that key switch, and inputs It is stored in the first digit of a transmission buffer (not shown) included in the output control section 3. Thereafter, the digit counter is incremented by 1 and the process waits until the next key is activated.

When 5 is operated on the key switch as the second digit,
The input/output control unit 3 reads out the numerical data ``8'' from the key search table corresponding to the key switch 5 and stores it in the second digit of the transmission buffer.

Thereafter, in the same way, numerical data is read from the address of the key search table corresponding to each operated key switch of the keyboard unit 2 and stored in each digit of the transmission buffer.

Incidentally, if the customer makes a mistake in inputting the password from the keyboard unit 2, the customer operates the key switch KIO. Then, the input/output control section 3 erases all numerical data stored in the transmission register and sets the display digit number counter to 1 again. When the customer has finished inputting the correct password, he or she operates the key switch 12. Input/output control section 3
determines that 12 has been operated on the key switch,
In order to let the customer decide whether or not confirmation is required for the entered PIN number, the display digits D2.
D5. D8. and display a confirmation guide on DIO or DI2. At this time, the display digits DIO and D12 flash to notify KIO and 12 that the operable key switch is 12. If the customer determines that confirmation is not necessary, the key switch is set to 10, and if the customer determines that it is necessary, the key switch is set to 12.

When the key switch KIO is operated, the input/output side control unit 3 sends the data from the first digit to the nth digit of the transmission buffer to the external device via the output line 6, and then outputs the data from the display digit DI.
Or erase all the displays of D9 and Dll, and erase the numerical data stored in the key search function. and,
Waits until the next input command 9 is input from the CPU of the external device, and when the input command is input, displays the numbers selected by the random number generator on the display digits DI to D9 and D1.1 of the display unit 4. .

Further, in response to the above-mentioned confirmation guidance, when the customer decides that confirmation is required and operates the key switch 12, the input/output control unit 3
As shown in FIG.
Display the first digit of the PIN number in ll.

Below, every time you operate 12 on the key switch, the displayed digit Dll
The contents of the 2nd to nth digits of the password are sequentially displayed. Then, when the number of times the key switch is pressed 12 is one more than the password input method, the input/output control unit 3 transmits the data from the first digit to the nth digit of the transmission buffer to the external device through the output line 6. . FIG. 3J shows the display when the key switch 12 is operated twice. When the key switch KIO is input while confirming the PIN number, the input/output control unit 3 determines that the customer has made a mistake in inputting the PIN number.
Returning to the state shown in FIG. 3B again, the display digits DI to D9 and Dll of the display section 4 are caused to display the numbers selected by the random number generator.

As described above, according to this embodiment, the display contents of the display section 4 that displays the contents of 1 to 9 and Kll on each key switch are randomly arranged each time the PIN input command is input. Since the directionality imparting device 7 changes, the input number cannot be known to others just by looking at the movement of the customer's finger when inputting the PIN number.
This gives the key arrangement a strong directivity in the direction of the customer's line of sight, making it impossible for someone else to steal the input number when entering the password. Furthermore, after entering the PIN number,
Since the customer can now confirm the input number by selecting a key switch before transmitting it, it is possible to prevent incorrect input of the password.

(Scope of Application of the Invention) In the above-mentioned embodiment, a case has been described in which the numeric keypad of the external device and the keyboard for inputting the PIN number are provided separately, but the keyboard for inputting the PIN number may also be used as the numeric keypad. You may also do so. In this case, when inputting amounts, etc., it is preferable that the keyboard layout be the same as a numeric keypad.

Further, in the above description, a liquid crystal panel is used as the display section, but other display devices such as a CRT may be used.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an embodiment of the present invention. FIG. 2 is an exploded perspective view of one embodiment of the present invention. Third
Figures A to 3J are diagrams showing display examples according to an embodiment of the present invention. FIG. 4 is a diagram showing a key search table. FIGS. 5A and 5B are flowcharts for explaining the specific operation of an embodiment of the present invention. In the figure, 1 is a password input device, 2 is a keyboard 9
3 is an input/output control unit, 4 is a display unit, 5 is an input command line, 6 is a password output line, 7 is a directivity imparting device, K1 to 12 are key switches, DI to DI2
indicates the displayed digit. Patent Applicant Tateishi Electric Co., Ltd. Representative Patent Attorney Tatsuo Ito Representative Patent Attorney Tetsuya Ito Figure 3G Figure 3H Figure 3J

Claims (1)

[Claims] 1. A plurality of key switches for inputting a password;
An input/output control means that assigns a predetermined function or input number to each of these key switches and derives a key output signal corresponding to the function of the operated key switch, and a display means for displaying information corresponding to the password, and when inputting the password, the assigned contents are randomly changed for each password, and after inputting the password, the input contents are displayed on the display means. A PIN number input device characterized by: 2. The plurality of key switches are transparent channel switches, and the display means is provided between a display section provided on the lower side of the channel switch and between this display section and the panel switch. The personal identification number input device according to claim 1, further comprising directivity imparting means for imparting directivity.