JPH10121804A - Code number device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the operability of a code number device by preventing a risk that a code number is read. SOLUTION: A code number device is provided with a number display part 1 which displays a plurality of numbers, a transparent switch part 2 which is provided on its front face and is operated by an operator, and a controller 3 to which the number display part 1 and the transparent switch part 2 are connected, respectively, and which arranges numbers in order sequentially on the number display part 1 from a position which corresponds to the transparent switch part 2 which is operated when any key in the transparent switch part 2 is operated to start the number display part 1 by using the key as a start point and arranges numbers in order sequentially on the number display part 1 from a position adjacent to a corresponding position when the start point is operated by n times (n is a positive integer of 2 or more) or more continuously. Since the controller 3 has a function that generates an alarm sound when the start point is operated by n times or more continuously, there is no risk that a code number is read due to the dirt of a specific number, the arrangement of numeric characters can be understood easily, and the operability of the device is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a security code device used for unlocking and locking an electric lock, and more particularly to a security code device for dispersing traces of an input operation.

[0002]

2. Description of the Related Art An entrance door incorporating an electric lock is unlocked by an unlocking operation from an indoor master unit in response to a call signal input from an entrance cordless handset, or a password provided outside the entrance. The user inputs a preset password from the numbering device or uses a key in some cases. When the password is unlocked by inputting the password, it is usually determined by the CPU of the master unit whether the input password matches the registered password.

Conventionally, as shown in FIG. 5, this type of personal identification number device has a number display section 1 composed of LEDs or liquid crystals.
A transparent switch unit 20 is provided on the front of the unit 0. The number display unit 10 and the transparent switch unit 20 are connected to the CPU 30, respectively. To input a password for unlocking, first, the start switch (vertical line in the figure) 20S of the transparent switch 20 is pressed. Thus, the start switch indicated by S of the number display unit 10 corresponding to the start switch unit 20S is activated, and the number display unit 10 has a one-to-one correspondence with the transparent switch unit 20. Display numbers randomly. The unlocking person normally enters the four-digit password number sequentially from the randomly displayed numbers, and finally presses the end switch (horizontal line in the figure) 20E to complete the password number input.

In this personal identification number device, the number display part 10 randomly displays a number because, when the same number is always displayed at the same position, the stain on the transparent switch part 20 at a specific place becomes conspicuous, and the other person's personal identification number is displayed. This is to avoid the danger of the number being decoded. However, every time you unlock, you have to look at the randomly displayed number and find the number that corresponds to the password, and in the same state as you always use it for the first time, you must find the arrangement of the numbers from the randomly displayed number It was inconvenient. Naturally, the randomly displayed numbers must be checked every time, and there is a drawback that a blind person cannot use them. For the latter difficulty, when the specific key is operated twice, the display can be switched to the alignment display. However, when the display is switched to the alignment display, the same difficulty as the former occurs.

In order to solve these difficulties, the applicant of the present application has proposed a number display section 1 for displaying a plurality of numbers as shown in FIG. 1, and a transparent switch provided on the front of the number display section 1 and operated by an operator. The unit 2, the number display unit 1 and the transparent switch unit 2 are connected to each other, and the numbers are sequentially arranged on the number display unit 1 from the position corresponding to the operated transparent switch unit 2 and input from the transparent switch unit 2. And a control circuit 3 having a transmission circuit for transmitting the data of the assigned number.
No. 8).

Thus, the control circuit 3 sequentially arranges the numbers on the number display section 1 from the position corresponding to the operated transparent switch section 2 and transmits the number data input from the transparent switch section 2 to the master unit. Since it is transmitted and compared with a preset PIN, it is possible to input the PIN using a numeric keypad arranged from any starting point, and there is no danger of decrypting the PIN from a stain of a specific number,
The arrangement of the numbers is easy to understand and the operability has been improved.

[0007]

However, since the operator forgets the starting point of the previous operation with the passage of time, he or she selects the same position many times due to the habit. For this reason, there was a problem that a specific part was stained and the password was decrypted. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a personal identification number device with improved operability while avoiding the risk of decrypting the personal identification number.

[0008]

In order to achieve the above object, a personal identification number device according to the present invention is provided with a number display section for displaying a plurality of numbers, and is provided on the front of the number display section and operated by an operator. The transparent switch unit, the number display unit and the transparent switch unit are connected to each other, and when one of the keys of the transparent switch unit is operated as a starting point to activate the number display unit, a position corresponding to the operated transparent switch unit. Are sequentially arranged on the number display section, and when the starting point is selected and operated continuously n times (where n is a positive integer of 2 or more), the position corresponding to the operated transparent switch section And a control device for sequentially arranging the numbers on the number display section from the position adjacent to the number.

Further, the control device has a function of generating a warning sound when the starting point is selected and operated n times or more (where n is a positive integer of 2 or more). When the same starting point is continuously selected and operated n times or more, a control device is provided which sequentially arranges numbers on the number display unit from a position adjacent to a position corresponding to the operated transparent switch unit,
When the starting point is selected and operated at least n times,
Since it has a function of generating a warning sound, the transparent switch portion is uniformly touched, and the danger of reading the personal identification number due to dirt is avoided.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a personal identification number device according to the present invention. The door of the entrance incorporating the electric lock is set in advance by an unlocking operation from the indoor master unit in response to a calling signal input from the entrance slave unit on the entrance side, or set in advance from an external PIN device. Enter your PIN or unlock using a key in some cases.
Whether or not the input password matches the registered password is determined by the master unit via the CPU.

As shown in FIG. 1, in the personal identification number device according to the present invention, a transparent switch matrix 2 is provided as a transparent switch section on the front surface of a number display section 1 composed of an LED or a liquid crystal. Each key and the number display section 1 have a one-to-one correspondence. On the front surface of the transparent switch matrix 2, a lattice frame 21 for partitioning the positions of the keys of the transparent switch matrix 2 is attached, and the number display section 1 and the transparent switch matrix 2 are connected to a CPU 3 as a control device.

As shown in FIG. 4, the CPU 3 includes a number display section 1, a transparent switch matrix 2, a piezoelectric buzzer 4, a data input circuit 5, a data output circuit 6, a reset signal generation circuit 7, a clock signal generation circuit 8, The continuous starting point selection prevention function setting switches 9 are respectively connected. As shown in FIG. 3, to enter a password for unlocking, first,
Press any key (circle) of the transparent switch matrix 2. The number 1 is displayed in the number display section 1 corresponding to the pressed key.
Are displayed in sequence from the upper left to the lower right, starting from the numeral 1 to 2, 3,..., 9, 0. Column a is the second row from the top of the number display section 1 and the left end is the starting point 1. Column b is the fourth row from the top and the second from the left is the starting point 1. From any of these first pressed keys, According to the ten keys displayed in sequence, a predetermined password is input.

Each time a number is pressed, the number of lamps 2L lit in a rectangular frame provided below the transparent switch matrix 2 increases, and a confirmation sound is emitted by the piezoelectric buzzer 4 (FIG. 4). Finally, the key of the transparent switch matrix 2 corresponding to the unlock switch 1b is pressed. When the password is correctly input, the electric lock (not shown) is unlocked, the clock signal generating circuit 8 operates, the unlock switch 1b flashes for a set time, and the transparent switch matrix 2 is turned on.
The lamps 2L illuminated below are sequentially turned off. At the time of locking, the key portion of the transparent switch matrix 2 corresponding to the locking switch 1a blinks.

The CPU 3 of the personal identification number device according to the present invention comprises:
Normally, the transparent switch matrix 2 is scanned, and FIG.
When an arbitrary key of the transparent switch matrix 2 is depressed (F1 in FIG. 2) as shown in FIG.
Check if (FIG. 4) is set (FIG. 2F11). If not set, a signal is sent to the number display unit 1 so that the numbers are sequentially arranged from 1 to 0 starting from the key pressed first as described above (F2 in FIG. 2), and the transparency corresponding to the display is transmitted. The number data of the switch matrix 2 is stored (F3 in FIG. 2).

In the number display section 1, numbers are sequentially arranged from 1 to 0 starting from an arbitrary key pressed first.
A password is entered using these numbers (F in FIG. 2).
Four). The CPU 3 operates the operated transparent switch matrix 2
(F5 in FIG. 2), a confirmation sound generation signal is transmitted (F6 in FIG. 2), and the piezoelectric buzzer 4 is sounded (F7 in FIG. 2). Next, the data of the pressed number is transmitted to the indoor master unit via the data output circuit 6 (F in FIG. 2).
8). Normally, after transmitting the 4-digit password, the indoor master unit confirms the data (F9 in FIG. 2), and the quality of the result is sent from the indoor master unit via the data input circuit 5 (10 in FIG. 2F), When it is confirmed that the password has been correctly entered, the electric lock at the entrance door is unlocked.

In the case of an erroneous input, the reset signal generating circuit 7 is activated and the input is made again. If the continuous starting point selection prevention function setting switch 9 is set, the data is compared with the stored data which is the same as the previous starting point (FIG. 2F12). If they do not match, the continuous starting point selection counter inside the CPU 3 is cleared (FIG. 2F13), and the number display section 1 is arranged so that the numbers are sequentially arranged from 1 to 0 starting from the key pressed first as described above. (F2 in FIG. 2), and operates in the same manner as described above until unlocking.

If they match, the continuous starting point selection counter is incremented (FIG. 2F14), and it is determined whether the continuous starting point selection counter value x is equal to or more than a set value n (n is a positive integer of 2 or more) (FIG. 2F15). ), If n> x, a signal is sent to the number display unit 1 so that numbers are sequentially arranged from 1 to 0 starting from the key pressed first as described above (F in FIG. 2).
2) The same operation as above is performed until unlocking.

If n ≦ x, a warning sound generation signal is transmitted (FIG. 2F16), the piezoelectric buzzer is sounded (FIG. 2F17), and it is warned that the same starting point has been selected n times or more.
A signal is sent to the number display unit 1 so that numbers are sequentially arranged from 1 to 0 starting from one key right pressed first (FIG. 2F18), and the number data of the transparent switch matrix 2 corresponding to the display is transmitted. It is stored (F3 in FIG. 2), and operates in the same manner as described above until unlocking.

Although the set value n is a positive integer of 2 or more, practically 3 to 5 is preferable, but not limited. Since the numbers are sequentially arranged from an arbitrary start position, that is, a position corresponding to the operated transparent switch section 2, the number input operation can be performed more smoothly than those arranged at random. In addition, since the specific position of the transparent switch matrix 2 is not intensively pressed, the danger of others being able to decode the personal identification number due to dirt is avoided. Further, since the surface of the transparent switch matrix 2 is partitioned by the lattice frame 21, it is suitable for use because the arrangement of the numbers can be recognized even by a blind person by confirming the pressed position first.

Although the embodiment has been described with reference to an entrance cordless handset incorporating an electric lock, the invention is also suitable for other security code devices.

[0021]

As is clear from the above embodiment, in the password number device according to the present invention, when the same starting point is selected and operated continuously n times or more, the same starting point is moved to a position corresponding to the operated transparent switch section. A control device is provided for sequentially arranging numbers on the number display section from adjacent positions, and is controlled by a control circuit to sequentially arrange numbers on the number display section from the position corresponding to the operated transparent switch section. When the starting point is continuously selected and operated n times or more, a control device is provided which sequentially arranges numbers on the number display section from the position adjacent to the position corresponding to the operated transparent switch section, and continuously sets the starting point. When it is selected and operated more than n times, it has a function to generate a warning sound, so that the transparent switch part is uniformly touched, and there is no danger that the secret number can be decoded from the dirt of the specific number, Location is easy operation is improved understanding.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an embodiment of a personal identification number device according to the present invention.

FIG. 2 is a flowchart of a control circuit of the personal identification number device according to the present invention.

FIG. 3 is an explanatory diagram of the operation of the personal identification number device according to the present invention.

FIG. 4 is a block diagram of a personal identification number device.

FIG. 5 is a diagram illustrating a conventional personal identification number device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Number display part 2 ... Transparent switch part 21 ... Lattice frame 3 ... Control device (control circuit) 4 ... Piezoelectric buzzer 5 ... Data input circuit 6 ... Data output circuit 7 ... Reset signal generation circuit 8 ... Clock signal generation circuit 9 ... Continuous starting point selection prevention function setting switch

Claims (2)

[Claims] 1. A number display unit (1) for displaying a plurality of numbers.
A transparent switch unit (2) provided on a front surface of the number display unit and operated by an operator; the number display unit and the transparent switch unit are respectively connected to the transparent switch unit to activate the number display unit When the operation is performed with any key of the section as a starting point, numbers are sequentially arranged on the number display section from the position corresponding to the operated transparent switch section, and the starting point is continuously n times (where n And a control device (3) for sequentially arranging numbers on the number display unit from a position adjacent to a position corresponding to the operated transparent switch unit when selected and operated. A personal identification number device comprising: 2. The apparatus according to claim 1, wherein the control device has a function of generating a warning sound when the start point is selected and operated n times or more (where n is a positive integer of 2 or more). The personal identification number device according to claim 1, wherein