JPH0747908B2 - Electronic key device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electronic key device that opens and closes a lock in a contactless manner by using radio waves, light, ultrasonic waves, or the like.

[Prior art]

Conventionally, as a safety device such as a door or a gate of a building or a room, a door of a car, a door or a lid of a safe or a desk or a locker, or a drawer, there is a device having a mechanical lock and a lock mechanism by a key. . This is because the lock mechanism is mechanically or mechanically compared with the combination of the geometrical irregularities in the lock and the combination of mechanical information such as the length and position of the pin or cylinder or the presence or absence thereof. It is unlocked so that the lock can be opened.

In recent years, instead of the above-described mechanical lock mechanism of a lock and a key, an electronically controlled lock device including a so-called electronic key device and an electronic lock device has been developed and used. As such a lock device, for example, a remote control device using a radio wave or the like is provided in an electronic key device, and the lock can be released in a contactless manner by transmitting an encryption code from the remote control device to the electronic lock device at a distance. Or a magnetic stripe card in which an encryption code is recorded on a magnetic tape is used as an electronic key device, and the magnetic stripe card can be unlocked by being read by an electronic lock device. Are known.

[Problems of conventional technology]

Since the above-mentioned conventional electronic key device stores only one encryption code corresponding to one electronic lock device, when it is necessary to open a plurality of electronic lock devices, different electronic lock devices corresponding to the respective electronic lock devices are stored. A key device must be provided. Therefore, each time you open the electronic lock,
It takes time and effort to select a necessary electronic key device from a plurality of electronic key devices, and sometimes a wrong selection is made and the wrong electronic key device is used.

[Object of the Invention]

In view of the above-mentioned conventional problems, the present invention is an electronic device having excellent operability, which can deal with a plurality of electronic lock devices with one device and can easily send out only a necessary encryption code without wasteful operation. An object is to provide a key device.

[Main points of the invention]

In order to achieve the above object, the present invention enables to store a plurality of cryptographic codes corresponding to each electronic lock device, and to send out only a desired cryptographic code from the cryptographic codes in a desired order. It was done.

Example of Invention

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an external perspective view showing an embodiment in which the present invention is applied to a wristwatch. In the figure, the wristwatch body 1 is
The display unit 2 includes a liquid crystal display device and the like, and a key operation unit 3 including various key groups 3a. The side end surface of the display unit 2 is provided with keys S ₁ , S ₂ , S ₃ , S ₄ and LED _4, and these keys S ₁ , S ₂ , S ₃ and S ₄ will be described later in detail. It has a function for storing various codes, programming various sending sequences, and other various operations.

Next, FIG. 2 is an external perspective view of the jewelry box 10 in which the lock mechanism is released by the electronic key function according to the present embodiment. The jewel box 10 is composed of the lid 12 of the main body 11, and the lid 12 is the main body 11
On the other hand, it is attached so as to be openable and closable by a hinge or the like (not shown). Further, on the inside of the lid body 12, there is a locking projection 13 that engages with an engagement portion (not shown) provided inside the main body 11.
Is provided. These are locking mechanisms that are automatically locked by the engagement between the engaging portion and the protrusion 13 when the lid 12 is closed.

Further, a digital switch 14 for rotating the four dials to adjust the numbers is attached inside the lid 12, and is electrically connected to the lock mechanism. When an optical signal corresponding to the encryption code (“0425” in FIG. 2) set by the digital switch 14 is output from the LED 4 of the wristwatch in FIG. 1 and received through the lock hole 15, or when a predetermined signal is received. The lock mechanism can be released only by a key.

FIG. 3 shows a circuit configuration of the wristwatch body 1 shown in FIG. In the figure, the key operation unit 3 is the same as that shown in FIG. 1, and a desired item (for example, “JEWEL” in the case of a jewelry box and the corresponding encryption code ( For example, “0425”) can be entered.The items and the encryption code entered here are the key control unit 5
Are stored in the temporary storage unit 6.

Further, in the control switch section 21, the keys S ₁ and S ₁ shown in FIG.
One-shot circuits 22, 23, ₂ for S ₂ , S ₃ , and S ₄ , respectively
4, 25 are connected, and each time one of the keys S ₁ , S ₂ , S ₃ , and S ₄ is turned on, one-shot circuits 22, 23, 24, 25 to 1
The puzzles are output. The output of the one-shot circuit 22 is input to the AND circuit 26, the output of the one-shot circuit 23 is input to the AND circuits 27 and 28, and the one-shot circuit 24
Is output to the AND circuits 29 and 30, and the output of the one-shot circuit 25 is input to the input terminal T of the trigger flip-flop 31. The set output Q of the trigger flip-flop 31 is input to the other input terminal of the AND circuits 26, 27 and 29, and the reset output is input to the other input terminal of the AND circuits 28 and 30, and any output Q is also guided to the display control unit 48.

The storage unit 20 includes a data storage RAM 32 for storing items and encryption codes corresponding to the items and the data storage RAM 32.
And an address storage RAM 34 for storing the sending order of the encryption codes stored in the RAM 32,3.
For address 4, address counters 33 and 35 respectively specify addresses when writing and reading data.

The output of the AND circuit 29 described above is input to the address counter 33 via the OR circuit 36, to the gate 39 as a gate signal, and further to the data storage RAM 32 as a W signal (write signal). Therefore, when the key S ₃ is operated with the trigger flip-flop 31 set and the H (high) signal is output from the AND circuit 29, 1 is added to the address counter 33 and the address counter 33 Specified data storage RA
The item and the encryption code stored in the temporary storage unit 6 are written in the address of M32 through the gate 39. The output of the AND circuit 27 is input to the address counter 33 via the OR circuit 36, and is also input to the data storage RAM 32 via the OR circuit 37 as an R signal (read signal). Therefore, when the key S ₂ is turned on while the trigger flip-flop 31 is set and the H signal is output from the AND circuit 27, 1 is added to the address counter 33 and the address counter 33 is designated. The item and the encryption code written in the address of the data storage RAM 32 are read.

The output of the AND circuit 26 is input to the address counter 35 via the OR circuit 38, the gate signal to the gate 40, and the W signal to the address storage RAM 34. Therefore, when the key S ₁ is turned on while the trigger flip-flop 31 is set and the H signal is output from the AND circuit 26, 1 is added to the address counter 35 and the address counter 35 is added.
The address data of the address counter 33 is written into the address of the address storage RAM 34 designated by 35 through the gate 40.

The output of the AND circuit 30 is input to the address counter 35 via the OR circuit 38, and the gate 41 and
42 is input as a gate signal to the address storage RAM3.
4 and the data storage RAM 32 are input as the R signal. Therefore, when the key S ₃ is turned on while the trigger flip-flop 31 is reset and the H signal is output from the AND circuit 30, 1 is added to the address counter 35 and the address counter 35 is designated. The address data written in the address of the address storage RAM 34 is read out, and the address counter is passed through the gate 41.
Preset to 33. Then, the item and the cipher code written in the address of the data storage RAM 32 designated by the preset address counter 33 are read out and sent to the conversion circuit 43 through the gate 42. Further, since the output of the AND circuit 28 is input to the clear terminal of the address counter, when the key S ₂ is turned on while the trigger flip-flop 31 is reset and the H signal is output from the AND circuit 28, the address Counter 35 is cleared.

In the conversion circuit 43, the cipher code read from the data storage RAM 32 is converted into an H (high) and L (low) serial electric signal, and is supplied to the sending section 44. Sending unit 44
Then, according to the output signal of the conversion circuit 43, the transistor
44a is turned on and off, and LED4 is turned on and off accordingly, so that the encryption code is converted into an optical signal and transmitted. The LED 4 is the same as that shown in FIG.

On the other hand, a clock signal of a constant cycle is output from the oscillator 45, and this clock signal is frequency-divided by a frequency dividing circuit 46 to a predetermined frequency, and is converted into time data such as seconds, minutes, hours by a clock counting circuit 47. It is converted and output. Total clock circuit 47
The time data output from, the item and the encryption code stored in the temporary storage unit 6, and the item and the encryption code read from the data storage RAM 32 are respectively sent to the display control unit 48, and the output of the trigger flip-flop 31 is output. And is displayed on the display unit 2. The display unit 2 is the same as that shown in FIG.

Next, the key operation for storing the items and the encryption codes, programming the order of sending them, and the like in the circuit configured as described above will be described.

First, to store the desired item and encryption code,
The key S ₄ is operated to set the trigger flip-flop 31 to the set state (Q = 1, = 0) to set the item and cipher code writing mode. In this state, operate the key operation unit 3 to select items (for example, “JEWEL” for jewelry boxes, “CAR” for car doors, “OFFICE” for office doors, etc.) and the encryption codes corresponding to those items (for example, "0425", "023
4 ”,“ 1200 ”, etc.) to be stored in the temporary storage unit 6. The items and the encryption code stored in the temporary storage unit 6 are displayed on the display unit 2. Next, the key S ₃ is turned on and the H signal is output from the AND circuit 29 to write the above items and the encryption code stored in the temporary storage unit 6 into the data storage RAM 32. As described above, with the trigger flip-flop 31 still set, the key operation unit 3
By repeating the above-mentioned operation of the key S ₃ and, a large number of items and encryption codes can be sequentially stored in the data storage RAM 32.

If the user wants to check the items and encryption codes stored by the above operation again, the key S ₂ is sequentially turned on. Then, the H signal is sequentially output from the AND circuit 27, so that the stored items and the encryption codes are sequentially output from the data storage RAM 32 and are sequentially displayed on the display unit 2. Therefore, all data can be sequentially confirmed by looking at the display unit 2 while operating the key S ₂ . However, only the display is performed at this time, and the encryption code is not transmitted.

Next, in order to program the transmission order of the stored cipher codes, first, the desired item and the cipher code are displayed on the display unit 2 by operating the key S ₂ . Next, the key S ₁ is turned on and the H signal is output from the AND circuit 26 to store the address of the item and the encryption code displayed on the display unit 2 in the address storage RAM 34. By repeating the operation of the keys S ₂ and S ₁ in this manner, the addresses of desired items and encryption codes can be sequentially stored in the address storage RAM 34 in a desired order.

By the above-mentioned operations, a large number of items and encryption codes can be stored in the data storage RAM 32, and the addresses of desired items and encryption codes can be stored in the address storage RAM 34 in a desired order. After the programming of the sending order is completed in this way, the following operations are performed in order to send the encryption codes in the above order.

First, operate key S ₄ to set trigger flip-flop 31
From the set state to the reset state (Q = 0, = 1),
Set the item and encryption code read mode. In this state, the key S ₃ is operated to output the H signal from the AND circuit 30, thereby sequentially outputting the address data stored in the address storage RAM 34. Then, the cipher code specified by the output address data is continuously output from the data storage RAM 32 and is output from the transmission unit 44 via the conversion circuit 43. When sending the next encryption code, it is sufficient to turn on the key S ₃ in the same manner as above. Then,
The encryption code specified by the next address data stored in the address storage RAM 34 is the data storage RAM 32.
Are continued from. In this way, every time the key S ₃ is operated, the encryption code can be sent out in the order stored in the address storage RAM 34.

If the contents of the program are desired to be changed, the address counter 35 is cleared by first operating the key S ₂ while keeping the trigger flip-flop 31 in the reset state. After that, as described above, the trigger flip-flop 31 is set and the operations of the keys S ₂ and S ₁ are repeated, so that the data can be stored again in a desired sending order.

As described above, it is possible to program the sending order of only desired items and cipher codes from a large number of items and cipher codes, and to sequentially send each cipher code by operating only one key S ₃ according to the sending order.

For reference, FIG. 5 shows a circuit configuration of the jewelry box 10 shown in FIG. 2 as an electronic lock device. In the figure, the optical signal sent from the sending unit 44 shown in FIG.
Will be received at. The receiver 61 is a photodiode 61a, an amplifier
The photodiode 61a, which includes an optical signal 61b and a low-pass filter 61c, converts the optical signal into an electrical signal by turning on and off upon receiving the optical signal. The photodiode 61a is attached to the inner portion of the keyhole 15 in FIG. 2 so that light entering from the outside through the keyhole 15 can be detected. Also, the photodiode
A phototransistor may be used instead of 61a. The amplifier 61b amplifies the electric signal obtained by the photodiode 61a, and the low-pass filter 61c extracts only the low frequency component from the output thereof. In this way, the receiving unit 61
The signal output from is sent to the conversion circuit 62, where it is converted into a digital signal (encryption code). Match detection circuit
Reference numeral 63 compares the encryption code set by the digital switch 14 described above with the encryption code output from the conversion circuit 62, and outputs a coincidence signal when their contents match. The lock mechanism 64 is composed of the protrusion 13 shown in FIG. 2 and an engaging portion in the main body 11, and when the coincidence signal is received, the engagement is disengaged and the lock is released. .

Next, FIG. 4 shows a block configuration of another embodiment of the present invention. In this embodiment, the transmission order of the encryption code can be programmed separately for holidays and weekdays. In FIG. 3, one storage unit 20 is provided, but in FIG. 4, two storage units 49, 50 for holidays and weekdays are provided.
Is provided. Further, a holiday detection circuit 51 for outputting an H signal during holidays based on the time data output from the total clock circuit 47 is provided. Based on the detection result, the holiday storage unit 49 in the encryption code read mode is provided. And the weekday storage unit 50 are configured to operate by switching.
That is, since the H signal is output from the holiday detection circuit 51 on a holiday, the encryption code can be output from the holiday storage section 49 to which this H signal is input, while on weekdays, the L signal is output from the holiday detection circuit 51. Since it is output, the encryption code can be output from the weekday storage unit 50 which is inverted by the inverter 52 and the H signal is input. Here, the internal configuration of each storage unit 49, 50 is the same as that of the storage unit 20 of FIG. 3, and a plurality of items and encryption codes and their sending order are indicated by the control switch unit 21.
You can freely memorize by pressing the key.
The other structure of FIG. 4 is the same as that of FIG.

Therefore, in FIG. 4, the holiday storage unit 49 can be programmed with a holiday delivery sequence, while the weekday storage unit 50 can be programmed with a weekday delivery sequence. And
In the encryption code read mode, the holiday memory is used for holidays.
The encryption codes can be transmitted according to the order stored in 49, and on the other hand, according to the order stored in the weekday storage unit 50 on weekdays. Thus, in this embodiment,
By providing the two storage units separately, the program can be used without resetting each holiday, and the operation can be further simplified.

The holiday detection circuit 5 is used to switch between the two storage units 49 and 50.
Instead of using 1, the switching may be performed by, for example, pressing two keys at the same time. In addition, in case of sudden need to use another encryption code other than the programmed sending order, it is necessary to provide an interrupt function so that another item and encryption code can be entered in the middle of the above order. May be.

〔The invention's effect〕

As described above, according to the present invention, a plurality of cryptographic codes can be stored, and desired cryptographic codes can be transmitted in a desired order from among them, so that one device can handle a plurality of electronic locks. Not only can it be done, but only the required encryption code can be sent without multiple operations. In particular, the behavior of the day is constant, and the types of locks that need to be opened and the order in which they are opened are constant, so that the electronic key device of the present invention can be used to obtain desired encryption codes in advance for desired encryption codes. By setting the sending order, it is possible to save the trouble of selecting a necessary encryption code each time and to avoid making a mistake in selecting the encryption code in a busy day.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of the present invention, FIG. 2 is an external perspective view of a jewelry box in which a lock mechanism is released by the same embodiment, and FIG. 3 is a circuit showing a circuit configuration of the same embodiment. FIG. 4 is a block diagram showing a circuit configuration of another embodiment of the present invention, and FIG. 5 is a circuit diagram showing a circuit configuration of the jewelry box shown in FIG. 20 ... Storage unit, 21 ... Control switch unit, 32 ... Data storage RAM, 33 ... Address counter, 34 ... Address storage R
AM, 35 …… Address counter, 43 …… Conversion circuit, 44 ……
Sending unit, 49 ... Holiday storage unit, 50 ... Weekday storage unit, 51
…… Holiday detection circuit, S _{1 to} S ₄ …… key.

Claims (2)

[Claims] 1. A cryptographic code storage means for storing a plurality of cryptographic codes for unlocking a plurality of electronic locks, and a desired cryptographic code among the plurality of cryptographic codes stored in the cryptographic code storage means. Sending order storage means for storing a sending order for sending in a desired order, and an encryption code for sending the encryption code stored in the encryption code storage means according to the sending order stored in the sending order storage means An electronic key device comprising a sending means. 2. The electronic key device according to claim 1, wherein the sending order storage means can store at least two kinds of orders.