JPH0578848U - PIN code device - Google Patents

Abstract

(57) [Summary] [Structure] The transparent switch section 2 operated by the operator, the number display section 1 for displaying a plurality of numbers in one-to-one correspondence with the operated transparent switch section, the number display section and the transparent section. Each of the switch units is connected to the CPU 3 and is connected to the CP.
U sequentially arranges numbers on the number display section from the position corresponding to the transparent switch section that was operated first, and sends a signal based on the personal identification number input from the transparent switch section to the master unit. The result of comparison with the preset personal identification number is received and an unlocking signal is issued. [Effect] The numeric keypads are aligned and arranged from an arbitrary starting point on the transparent switch section, and the personal identification number is input using this numeric keypad, so there is no danger of the personal identification number being deciphered due to stains on the specific number key, and the arrangement of numbers is also possible. Easy to understand and operability is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a personal identification number device used for unlocking and locking an electric lock.

[0002]

[Prior Art]

 The entrance door with the electric lock installed is either unlocked by the indoor master unit in response to the call signal input from the entrance slave on the entrance side, or preset by an external security code device. You will be unlocked using your PIN or in some cases using a key. Normally, the CPU on the base unit side determines whether or not the input personal identification number matches the registered personal identification number.

Conventionally, as shown in FIG. 5, in this type of personal identification number device, a transparent switch section 20 is provided on the front surface of a number display section 10 composed of an LED or liquid crystal, and these number display section 10, The transparent switch section 20 is connected to each of the CPUs 30. To enter the personal identification number for unlocking, first press the start switch portion (vertical line in the figure) 20 _S of the transparent switch portion 20. This activates the start switch indicated by S in the number display section 10 corresponding to the start switch section 20 _S , and the transparent switch section 20 has a one-to-one correspondence with the number display section 10 from 0 to 9. The numbers are displayed randomly. People to unlock, from the numbers that are displayed in this random, last to the end switch (in the figure, the horizontal line) personal identification number input by pressing the 20 _e sequentially enter the normal 4-digit security code is completed.

[0004]

[Problems to be solved by the device]

 By the way, in the above-mentioned conventional personal identification number device, the number display section 10 randomly displays the number because if the same number is always displayed at the same position, the transparent switch section 20 at a specific position becomes conspicuous and the other person's personal identification number is identified. This is to avoid the risk of the number being decrypted.

However, each time the lock is unlocked, it is necessary to look at the numbers displayed randomly to find the number corresponding to the personal identification number, and the numbers are randomly displayed in the same state as when using them for the first time. It was inconvenient because I had to find it out. Of course, the randomly displayed numbers had to be checked every time, and there was a drawback that they could not be used by the visually impaired. Regarding the latter difficulty, there are some cases in which the display can be switched to the alignment display by operating the specific key twice, but when the display is switched to the alignment display, the same difficulty as in the former occurs.

[0006]

【Purpose】

 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.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, a personal identification number device according to the present invention includes a number display section for displaying a plurality of numbers, a transparent switch section provided on the front surface of the number display section and operated by an operator, and a number display. Section and the transparent switch section are connected to each other, the numbers are sequentially arranged from the position corresponding to the operated transparent switch section to the number display section, and a transmission circuit for transmitting the data of the number input from the transparent switch section is provided. It is composed of a control circuit provided.

[0008]

[Action]

 According to the present invention, the transparent switch section operated by the operator, the number display section for displaying the number on the rear surface, and the control circuit to which the number display section and the transparent switch section are respectively connected are provided. , The numbers are sequentially arranged from the position corresponding to the operated transparent switch section to the number display section, and the number data input from the transparent switch section is transmitted to the master unit and compared with the preset secret code number. Therefore, the PIN code can be entered using the numeric keys arranged in line from any starting point, there is no risk of the PIN code being deciphered due to dirt on the specific number, and the layout of the numbers is easy to understand and the operability is improved.

[0009]

【Example】

 Hereinafter, an embodiment of a personal identification number device according to the present invention will be described in detail with reference to the drawings. The entrance door with the electric lock installed is either unlocked by the indoor master unit in response to the call signal input from the entrance slave on the entrance side, or preset by an external security code device. You will be unlocked using your PIN or in some cases using a key. Whether or not the entered personal identification number matches the registered personal identification number is judged 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 unit on the front surface of a number display unit 1 composed of an LED or a liquid crystal. There is a one-to-one correspondence between each key and the number display section 1. On the front surface of the transparent switch matrix 2, a grid 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 the CPU 3 as a control circuit, respectively. .

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, and a clock signal generation circuit 8. Each is connected. To enter the password for unlocking, first press any key (circle) on the transparent switch matrix 2. As shown in FIG. 3, the number 1 is displayed on the number display portion 1 corresponding to the pressed key, and the number 1 is used as a starting point and the numbers are sequentially increased from upper left to lower right 2, 3, ..., 9, 0. Displayed in an array. The a row is the second row from the top of the number display unit 1, the left end is the starting point 1, the b row is the fourth row from the top, and the second row from the left is the starting point 1. Enter the specified PIN with the ten keys arranged in sequence from the key. Each time a number is pressed, the number of lamps 2L that light up 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 transparent switch matrix 2 corresponding to the unlock switch 1b is pressed. When the correct security code is entered, the electric lock (not shown) is unlocked, the clock signal generating circuit 8 operates, the unlock switch 1b part blinks for the set time, and the transparent switch matrix 2 under The lamp 2L that has been turned on turns off sequentially. At the time of locking, the transparent switch matrix 2 portion corresponding to the locking switch 1a blinks.

The CPU 3 of the personal identification number device according to the present invention normally scans the transparent switch matrix 2, and as shown in FIG. 2, any key of the transparent switch matrix 2 is pressed (F _{1 in} FIG. 2). ) Is controlled by the built-in software to send a signal to the number display unit 1 so that the numbers are sequentially arranged from 1 to 0 starting from the arbitrary key pressed first as described above (see FIG. 2). F ₂ ), and the number data of the transparent switch matrix 2 corresponding to the display is stored (F _{3 in} FIG. 2). Numbers are sequentially arranged from 1 to 0 on the number display unit 1 starting from an arbitrary key pressed first, and a personal identification number is input using these numbers (F _{4 in} FIG. 2). The CPU 3 confirms the operated number data of the transparent switch matrix 2 (F _{5 in} FIG. 2), sends a confirmation sound generation signal (F _{6 in} FIG. 2), and the piezoelectric buzzer 4 sounds (F _{7 in} FIG. 2). Then, the pressed numeric data is sent to the indoor master unit via the data output circuit 6 (F _{8 in} FIG. 2). Usually, after transmitting the 4-digit PIN, the data is confirmed from the indoor master unit (F _{9 in} FIG. 2), and the indoor master unit sends the quality of the result via the data input circuit 5 ( _{10 in} FIG. 2F). ), The electric lock on the front door is unlocked when it is confirmed that the security code is entered correctly. In case of erroneous input, the reset signal generating circuit 7 is activated and input again.

Since the numbers are sequentially arranged from an arbitrary start position, that is, a position corresponding to the operated transparent switch portion 2, the number input operation is smoothly performed compared to the randomly arranged numbers. Moreover, since the specific position of the transparent switch matrix 2 is not pressed intensively, the danger that the secret code is deciphered by another person due to dirt can be avoided. Further, since the surface of the transparent switch matrix 2 is partitioned by the lattice frame 21, it is suitable for use because it is possible to recognize the arrangement of the numbers even if the visually handicapped person can confirm the pressed position first.

Although the embodiment has been described with respect to an entrance cordless handset incorporating an electric lock, it is also suitable for other personal identification number devices.

[0015]

[Effect of the device]

 As is apparent from the above embodiments, in the personal identification number device according to the present invention, the control circuit controls so that the numbers are sequentially arranged in the number display portion from the position corresponding to the operated transparent switch portion. Therefore, there is no risk of the PIN being read due to stains on the specific number, and the layout of the numbers is easy to understand and the operability is improved.

[Brief description of drawings]

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

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

FIG. 3 is a diagram for explaining 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 circuit 4 ... Piezoelectric buzzer 5 ... Data input circuit 6 ... Data output circuit 7 ... Reset signal generation circuit 8 ... Clock signal generation circuit

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Claims (1)

[Scope of utility model registration request] 1. A number display unit (1) for displaying a plurality of numbers
A transparent switch part (2) provided on the front surface of the number display part (1) and operated by an operator; and the number display part (1)
And the transparent switch section (2) are respectively connected,
A transmission circuit for sequentially arranging numbers from the position corresponding to the operated transparent switch unit (2) on the number display unit (1) and transmitting the data of the number input from the transparent switch unit (2). And a control circuit (3) provided with a personal identification number device.