JP2651861B2 - Switch having judgment mechanism for judging coincidence / mismatch of numerals and numeral display function - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a determination mechanism for comparing a registered password registration number with an inputted number to determine whether they match or not.

(Prior Art) A password registration number is registered in advance, and a switch group including at least 10 independent switches corresponding to numbers from 0 to 9, that is, a switch in which individual numbers of a so-called ten-key switch are sequentially described. 2. Description of the Related Art Numerical coincidence / mismatch determination mechanisms for operating and determining whether or not a password matches a registered password are used for various purposes.

Conventionally, since numbers are in the decimal system, a minimum of 10 switches 0 to 9 is required as a switch group. In addition, an additional operation switch is required, and the number of individual switches in the switch group is inevitably increased. This has hindered attempts to reduce the size of the device having this determination mechanism. This is because the switches in this switch group are operated by a human finger, so that the size of each switch cannot be reduced too much.

(Problems to be Solved by the Invention) It is an object of the present invention to improve such a point and to provide a coincidence / non-coincidence determination mechanism for numbers which can be downsized.

Another object is to provide a switch for use in a mechanism that solves the above-mentioned problems.

(Means for Solving the Problems) The present invention provides a number group in which each switch is provided with a number display function without fixing the number corresponding to each switch in the switch group, and each switch is randomly displayed. , The user is allowed to select a single digit number of the personal identification number. That is, the personal identification number is selected from a random number group for each digit.

Therefore, the present invention has a display number setting circuit for displaying a number, that is, a group of numbers, separately on each switch of this switch group, but this circuit selects one number from among the digits before the password registration number. When the switch on which the number is displayed is operated, the number group is deleted,
It is configured to display a group of numbers for the next digit. In addition, the number group always includes the number of the corresponding digit of the password registration number, and the other numbers are different.

The present invention further includes a comparison circuit, which compares a number selected from a group of numbers with a digit corresponding to the personal identification number for each digit. It is configured to output a coincidence signal when all the digits are equal, and to output a non-coincidence signal if any one digit is different.

Although the number of switches in the switch group for selecting a number is between 2 and 9, the number is preferably five.

Another invention is a plurality of numeric displays for displaying a single digit from 0 to 9 by an external signal input, and a numeric whose position can be detected by pressing a position of the number displayed on the numeric display. A switch comprising an input panel.

(Operation) In the mechanism of the present invention, a password registration number is registered in advance. During operation, first, the display number setting circuit
A number group corresponding to the highest digit of the personal identification number is displayed on the switch group. The number group always has the most significant digit of the personal identification number. If you know your PIN, you will press the correct number. Since this number is displayed on the switch, the switch operates to input the information to the comparison circuit and operate the display number setting circuit to display the number group corresponding to the next digit. Naturally, one of them matches the number in the next digit of the password registration number. Similarly, by operating the switch, the selection of a numeral for each digit of the personal identification number is performed over all the digits.

Each time the switch is operated, the comparison circuit compares the number with the corresponding digit of the personal identification number. If all the digits match, a match signal is issued so that the device equipped with this mechanism operates normally. Conversely, if any one of the numbers is different, a mismatch signal is issued at that time or after collation of the whole, and an alarm or the like is issued. Handling after the coincidence signal and the non-coincidence signal is not particularly different from the case using a general numeric keypad.

As described above, a number is randomly displayed for each digit of the personal identification number, and a correct number is selected from the numbers. Therefore, the number of switches in the switch group may be any number as long as the number is plural.

In addition, the switch has a plurality of numeric displays, and a numeric input panel capable of detecting the position by pressing the location of the numeric displayed on the numeric display is provided. , That number information can be passed on to others. Therefore, it is not necessary to fix a number corresponding to each switch in advance, and it is possible to display a number as necessary and input the displayed number to another electric circuit. In other words, a ten-key switch can be changed with a small number of switches.

(Embodiment) FIG. 3 is a plan view of a switch for selecting numbers, and five switches 2, 2,... Are arranged in a line as shown. The number of switches in the switch group is not limited to five, but may be at least two. Since the object of the present invention is to reduce the number of switches in the switch group, ten switches have the same meaning as a conventional numeric keypad, and need to be at least nine switches. The number may be two, but the probability of coincidence is increased by chance, so that about five is desirable as in the embodiment.

As shown in FIG. 4, each switch 2 is constituted by a numeric input panel 5 provided on a numeric display 4 formed on a printed circuit board 3. The surface of this panel is covered with a protective cover 6. The position of the numeral input panel 5 can be electrically detected by applying pressure with a fingertip, and is made of a transparent or translucent material. This is to make the number displayed on the number display 4 visible. An input / output cable 7 is connected to the printed board 3, and the board 3 and the numeric input panel 5 are connected via a connector 8. The whole is covered with a case 9 except for the surface of the switch group. That is, the switch group 1 is composed of five switches 2, and the switch 2 is a switch which is turned on by pressing the numeral input panel 5, and the numeral of the numeral display 4 is displayed on its surface. It has become so.

The electrical circuit configuration of the mechanism of this embodiment is as shown in FIG. Buttons 1 to 5 indicate a state where a number is displayed at the same time as the portion where the switch 2 is pressed. The figure shows that when each button is pressed, the switches SW1 to SW5 drawn thereon are turned on. This switch is connected to the switch input circuit 11, and gives information on which switch is pressed here.

Reference numeral 12 denotes a password registration number registration circuit in which a desired password registration number is registered in advance. It is assumed that a four-digit number "1234" has been registered.

The control circuit 13 sends the number displayed on the switch turned on in response to the input to the switch input circuit 11 to the comparison circuit 14 as information and sends a signal for operating the display number setting circuit 15.

The display number setting circuit 15 uses the information that one of the switches SW1 to SW5 has been turned on from the control circuit 13 to assign a group of numbers corresponding to the lower digits of the personal identification number to the switches 2, 2,. The information is transmitted to the numeric display 4 so as to be displayed. Individual numbers in the group of numbers are preset to be random, but one of them always matches the corresponding digit of the personal identification number. Further, at the start of the operation, the switch group 1 is configured to display a number group corresponding to the highest digit of the personal identification number. That is, in this embodiment, the numbers are selected in order from the upper digit of the personal identification number, but if the lower digits are selected, there is no difference in the operation and effect.

The number group corresponding to the digit of the personal identification number is as follows in a specific example. If the password registration number is "345", the number group corresponding to the most significant digit is a number "3" and four other randomly selected numbers, for example, "0", "1", "9". For example, “8”. The number group in this case is “0, 1, 3, 8, 9”, and the order of arrangement is arbitrary.

The comparison circuit 14 compares and compares the number displayed on the selected and pressed switch with the number of the corresponding digit of the password registration number, and outputs a coincidence signal 16 when the collation matches for all digits. If any one is different, a mismatch signal 17 is output. The coincidence signal 16 becomes a control output 18 and the non-coincidence signal 17 becomes an alarm output 19.

The use in the case where the above-described embodiment mechanism is installed in combination with, for example, a door key will be described with reference to the flowchart of FIG.

Switch 2 is not initially displayed at all. For example, a key is inserted into a keyhole, or a cover is provided to cover the switch group 1 and the cover is opened.
The operation is started by pressing one of the switches of any of the above. When the operation is started, first, a group of numbers is displayed on the display section of each of the switches 2, 2,... Of the switch group 1 (first number display).

The number includes the number “1” at the highest digit of the password registration number “1234”. A person who knows the password registration number naturally presses the switch on which the numeral "1" is displayed (first button operation). The information is sent from the switch input circuit 11 to the control circuit 13, and further sent to the comparison circuit 14. The display number setting circuit 15 is operated, and the number group corresponding to the next digit of the password registration number is stored in the switch group 1. Display (second number display). After the number is displayed, the timer operates, and if a button operation is not performed for 5 seconds, a counter (not shown) is operated.

The numeral group displayed in the second numeral display includes "2" in one of the numbers, and the others are different numbers. The person who knows the password registration number naturally presses the switch displaying the number "2" (the second button operation). Similarly, the comparison circuit 14
The information is transmitted, and the display number setting circuit 15 is operated to cause the switch group 1 to further display a number group corresponding to the next digit of the personal identification number (third number display). When there is no button operation, the counter is operated. It goes without saying that the numbers include "3". Similarly, when the switch displaying the number "3" is pressed (the third button operation), the next group of numbers corresponding to the lowest digit of the personal identification number is displayed on the switch group 1 (the fourth time). Number display). The switch in which “4” is displayed is turned on from the group of numbers. This ends the operation.

As shown in the figure, if each button operation is not performed within a predetermined time, the counter is operated, and if it is not operated three times, an alarm output is issued.

A number group is displayed on the switch group for each digit of the above-mentioned password registration number, and the number of the switch pressed for each digit is compared by a comparison circuit. When all the numbers match the password registration number, a match signal 16 is displayed. And release the key lock by the control output. On the other hand, if any one digit is different, the counter is operated and an instruction is given to perform the operation from the beginning. In the present embodiment, redoing is performed three times, and if the fourth time is different, a mismatch signal 17 is output, an alarm is output, and an alarm is output.

As described above, in this embodiment, it is possible to redo three times, but this is not necessary. Further, in the present embodiment, the entire security code digit is input and the whole number is compared to make a determination. When any of the digits is different, the counter is operated at that stage and the process returns to the beginning. It goes without saying that this may be done.

(Effects of the Invention) As described above, according to the present invention, at least the number of switches in the switch group can be correctly compared with the password registration number and the input number, and the same function as the conventional ten-key function including ten switches The function could be achieved with few switches. Therefore, it is possible to help reduce the size of equipment using this mechanism.

Further, since the switch of the present invention is constituted by a number display and a number input panel, it is not necessary to make the number correspond to each switch in a fixed manner, and the number is displayed as necessary, and the displayed number is displayed. Can be input as information to another electric circuit.

[Brief description of the drawings]

 1 is a block diagram of an electric circuit according to an embodiment of the present invention, FIG. 2 is a flowchart thereof, FIG. 3 is a plan view of an example of a switch group used in the present invention, and FIG. 4 is a side view thereof. DESCRIPTION OF SYMBOLS 1 ... Switch group, 2 ... Switch 3 ... Printed circuit board, 4 ... Numeric display 5 ... Numeric input panel, 6 ... Protective cover 7 ... Input / output cable, 8 ... Connector 9 ... Case, 11 Switch input circuit 12 Registration circuit 13 Control circuit 14 Comparison circuit 15 Display number setting circuit 16 Match signal 17 Mismatch signal 18 Control output 19 Alarm output

Claims (2)

(57) [Claims] 1. A judging mechanism for comparing a pre-registered password registration number with a number inputted by a switch and for judging whether or not a number which outputs an appropriate output when they match is displayed. A switch group provided with a plurality of switches each having a display unit for displaying the number of the most significant digit of the personal identification number on one of the switches on the display unit of each switch of the switch group, and the other switches have the same. The top digit group that displays different numbers at random is displayed, and in response to operation of one of the switches, the display of the digit group is changed from the display of that group to the display of the number group corresponding to the next digit of the personal identification number. A display number setting circuit for sequentially changing the number display to a number group corresponding to the lowest digit of the personal identification number by the operation of one switch; A comparison circuit that performs one digit selected by operating a switch from the group of digits to all digits of the password registration number, and outputs a coincidence signal when the whole matches, and a non-coincidence signal when any one is different. And a determining mechanism for determining whether the numbers match or not. 2. A numeral display for displaying a single digit of 0 to 9 by an external signal input, and a numeral input capable of detecting the position by pressing a position of the numeral displayed on the numeral display. A switch comprising: a panel.