JPH0658023B2 - 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.

[Conventional technology]

2. Description of the Related Art Conventionally, security devices such as doors and gates of buildings and rooms, doors of cars, safes and desks, doors and lids of lockers, drawers, etc. are equipped with a mechanical lock and a lock mechanism with a key. . This is a combination of mechanical information such as the geometrical irregularity in the lock, the length and position of the pin or cylinder, or the presence or absence thereof, and the mechanical information such as the geometrical irregularity, length or position of the key, or the presence or absence thereof. The combination is mechanically or mechanically compared with each other, and only when they match, the lock mechanism is released and the lock is 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 is 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 with a cryptographic code recorded on a magnetic tape is used as an electronic key device, and the lock can be released by reading the magnetic stripe card with an electronic lock device. It has been known.

[Problems of conventional technology]

Since the conventional electronic key device described above only stores one encryption code corresponding to one electronic lock device, when it is necessary to open a plurality of electronic lock devices, different electronic keys corresponding to the respective electronic lock devices are required. Equipment must be provided.
Therefore, when opening the electronic lock device, it takes time and effort to select a required electronic key device from a plurality of electronic key devices each time, and sometimes an incorrect electronic key device is used due to a selection error. There were cases where it would end up.

[Object of the Invention]

In view of the above-mentioned conventional problems, the present invention provides an electronic key device that can cope with a plurality of electronic lock devices with one device and that does not require sequential selection of encryption codes and has excellent operability. With the goal.

[Main points of the invention]

In order to achieve the above object, the present invention enables a plurality of cryptographic codes corresponding to each electronic lock device to be stored and the cryptographic codes to be sequentially transmitted in a desired order.

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. Keys S ₁ , S ₂ , S ₃ and an LED 4 are provided on the side end surface of the display unit 2. The keys S ₁ , S ₂ , S ₃ and the equal (=) key S ₄ in the key group 3a are The minus (−) key S ₅ and the plus (+) key S ₆ have a function of switching the display mode of the display unit 2, which will be described in detail later.

Next, FIG. 2 is an external perspective view of the jewelry box 10 whose lock mechanism is released by the electronic key function according to the present embodiment. The jewelry box 10 is composed of a main body 11 and a lid 12, and the lid 1
Reference numeral 2 is attached to the main body 11 so as to be openable and closable by a hinge or the like (not shown). Also, inside the lid 12,
A lock projection 13 is provided that engages with an engagement portion (not shown) provided inside the main body 11. 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 to the inside of 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 and the jewelry box 10 shown in FIGS. 1 and 2.

First, the wristwatch body 1 will be described. ROM21 is
It is a fixed memory that contains programs and data that control the entire system. Address control unit 22
Is an address part of the ROM 21 for measuring the flow of the program, and includes the ROM 21, the calculation part 25 and the frequency dividing circuit 27.
The output of is input. The RAM 23 stores the data stored in the address designated by the ROM 21 in the arithmetic unit 2
5 and the conversion circuit 29, and is a memory for inputting and storing the result processed and processed by the arithmetic unit 25. The instruction decoder 24 is a block that decodes the output of the ROM 21 and sends a control signal to each block. The arithmetic unit 25 performs an arithmetic operation using the data in the RAM 23 based on the instructions of the ROM 21 and the key input unit 28, writes the result to the address of the RAM 23 designated by the ROM 21, and displays the result on the display unit 2.
To display. The display unit 2 is the same as that shown in FIG. The oscillating unit 26 outputs a clock signal of a constant cycle, and the timing generator 27 divides the clock signal to a predetermined frequency and outputs a timing signal for controlling each block in time series. Key input section 28
Is a block for sending a signal for instructing each processing operation to the system from the outside, and includes the keys S ₁ , S ₂ , S ₃ and the key group 3a shown in FIG.

The conversion circuit 29 converts an encryption code, which will be described later, written in the RAM 23 into serial electrical signals of H (high) and L (low). The transistor 30 turns on and off according to the output signal of the conversion circuit 29, and the LED
When 4 is turned on and off, an optical signal including predetermined data is output. The LED 4 is the same as that shown in FIG.

Next, the circuit configuration of the jewelry box 10 will be described. The photodiode 31 receives an optical signal from the LED 4 and turns on and off to convert the optical signal into an electrical signal. The photodiode 31 has the keyhole 15 shown in FIG.
It is attached to the inner part of the door so that light entering from the outside through the keyhole 15 can be detected. A phototransistor may be used instead of the photodiode 31. The amplifier 32 amplifies the electric signal obtained by the photodiode 31, and the low-pass filter 33 extracts only the low frequency component from the output thereof. Conversion circuit 3
Reference numeral 4 converts the output signal of the low pass filter 33 into a digital signal (encryption code). The coincidence detection circuit 35 compares the cipher code set by the digital switch 14 described above with the (cipher code) output from the conversion circuit 34, and outputs a coincidence signal when their contents match. . The lock mechanism 36 is composed of the protrusion 13 in FIG. 2 and the engaging portion in the main body 11, and when the above-mentioned coincidence signal is received, the engagement is disengaged and the lock is released. There is.

Next, FIG. 4 shows the internal structure of the RAM 23 described above.
In the figure, the RAM 23 includes a time register W, a display register X, an item storage register Y, an encryption code storage register Z, a pass data storage register H, a pass data setting flag L, a time display mode flag M, and a pass data setting mode flag N. , Item / code setting mode flag O, program mode flag P, item display mode flag Q, code sending mode flag R, counters S, T, U and the like.

The time register W is a register that stores time data such as hours, minutes, seconds, 1/16 seconds, etc., and the display register X is a register that temporarily stores the data displayed on the display unit 2 described above. The item storage register Y and the encryption code storage register Z have register numbers “0”, “1”, “2”,
It is composed of a plurality of registers with "3", ..., Each register stores items corresponding to various locks and an encryption code set for each item. For example, in FIG. 4, the jewelry box 15 as shown in FIG.
The item is set to "JEWEL" and the encryption code is set to "0425" corresponding to the item. Also, in the case of a house door, a car door, or an office door, the items are "DOOR", "CAR", and "OFFIC", respectively.
The encryption code is set for each item. The pass data storage register H is a register for storing pass data, that is, data consisting of secret numbers or symbols known only to a specific person, and stores pass data "0011" in FIG. .

When the display mode of the display unit 2 is in the pass data setting mode as described later, the pass data setting flag L is set when a numerical value, that is, a numerical value is input by the operation of the key operation unit 3 described above. This flag is set to "1". When the time display mode flag M, the pass data setting mode flag N, the item / code setting mode flag O, the program mode flag P, the item display mode flag Q, and the code sending mode flag R are set to "1",
The display modes of the display unit 2 are the time display mode m ₁ , the pass data setting mode m ₂ , the item / code setting mode m ₃ , the program mode m ₄ , the item display mode m ₅ , and the code sending mode m ₆ shown in FIG. 14, respectively. It is a flag that becomes. The counter S is a counter for designating a register in which a desired item is stored when programming an item as described later, and for setting the register number attached to the register. The counter T is
The counter U is a counter that counts 1 each time a desired item and cipher code are programmed, and the counter U counts 1 each time a new item and cipher code are stored in the item storage register Y and the cipher code storage register Z. It is a counter that counts.

Next, the main operation of the present embodiment having the above circuit configuration will be described below.

First, in FIG. 5, if there is no key processing instruction from the HALT state (a ₁ ), the time-related processing is sequentially performed every 1/16 second (a ₂ ). The timing-related processing will be described in detail later, but the frequency dividing circuit 2 shown in FIG.
The time data obtained by this processing is executed by the clock signal output every 7 / 16th of a second, and the time data obtained by this processing is the time register W of the RAM 23 shown in FIG.
Memorized in.

On the other hand, in the HALT state (a ₁ ), when the keys S _{1 to} S ₆ etc. are pressed as shown in FIG. ₁ , key processing is performed (a ₃ ). This key processing is processing performed by the operations of the ROM 21, the RAM 23, etc. based on the signal output from the key input unit 28 shown in FIG. 3 when the key is pressed.

Hereinafter, processing and changes in the display mode when the keys S _{1 to} S ₆ are operated will be described.

FIG. 6 is a flow chart of the processing when the key S ₁ is pressed, and FIG. 16 shows a display change when each key is operated. When the key S ₁ is pressed, it is first determined whether the electronic key operation mode flag M is 1 as shown in FIG. 6 (b ₁ ). If M = 1,
That is, when the display mode is the time display mode m ₁ , the pass data setting mode flag N is set to 1 and M is set to 0 (b ₂ ).

If M ≠ 1 in step b ₁ , it is determined whether the pass data setting mode flag N is 1 (b ₃ ). When N = 1, that is, in the pass data setting mode m ₂ , the time display mode flag M is set to 1
And N is set to 0 (b ₄ ).

For N ≠ 1 in step b _3, item code setting mode flag O is determined whether the 1 (b _5). When O = 1, that is, in the item / code setting mode m ₃ , the item and the encryption code input by the key input unit 28 in FIG. 3 are stored in the item with a register number equal to the value of the counter U. It is stored in the register Y and the cipher code storage register Z (b ₆ ). After that, 1 is added to the counter U (b ₇ ). On the other hand, processing in the case of O ≠ 1 is not performed in step b _5.

The processing when the key S ₂ is depressed is shown in Figure 7. Key S
_{When 2} is pressed, it is first determined whether the pass data setting mode flag N is 1 (c ₁ ).

In the case of N = 1, that is, in the case of the pass data setting mode m ₂ , it is next determined whether or not the pass data setting flag L is 1, that is, whether or not there is the above-mentioned numerical value (input of numerical value) (c ₂ ). When L = 1, the above-mentioned number is stored in the path data storage register H in FIG. 4 as path data (c
₃ ), and if L ≠ 1, leave it as it is, and then
The code setting mode flag O is set to 1, and the pass data setting mode flag N and the counters U and T are set to 0 (c ₄ ).

If N ≠ ₁ in step c ₁ , it is determined whether the item / code setting mode flag O is 1 (c ₅ ). When O = 1, that is, in the item / code setting mode m ₃ , N is set to 1 and simultaneously O is set to 0 (c ₆ ).

If O ≠ 1 in step c ₅ , then it is determined whether the item display mode flag Q is 1 (c ₇ ). Q
= 1, that is, in the item display mode m ₅ ,
The time display mode flag M is set to 1 and Q is set to 0.
(C ₈ ).

In the step c ₇ , if Q ≠ 1, it is judged whether or not there is an input of the above-mentioned registered number, that is, a numerical value (c ₉ ).
_By the processing of ₃ , the path data storage register H in FIG.
It is determined whether or not it matches the path data stored in (c ₁₀ ). If they match, Q is set to 1 and M and T are set to 0 (c ₁₁ ).

On the other hand, if there is no register in step c ₉ and if the register does not match the path data in step c ₁₀ , no processing is performed.

The processing when the key S ₃ is pressed is shown in FIG. The key S ₃ is pushed in the drawing, first the time display mode flag M to determine whether 1 (d _1). When m = 1,
That is, in the time display mode m ₁ , the program mode flag P is set to 1, and the time display mode flag M and the counters T and S are set to 0 (d ₂ ). On the other hand, if m ≠ 1, it is determined whether P = 1 (d ₃ ). If P = 1, that is, if the program mode is m ₄ , M is set to 1 and P is set to 0 ( d _4). If neither M nor P is 1, no processing is performed.

The processing when the key S ₄ is pressed is shown in FIG. Key P
_{When 4} is pressed, it is determined whether the program mode flag P is 1 (e ₁ ). If P = 1, that is, in the program mode m ₄ , the registers Y and Z having the register numbers equal to the value of the counter T are compared with the registers Y and Z having the register numbers equal to the value of the counter S. Write the items in and the encryption code (e ₂ ). Then, 1 is added to the counter T (e ₃ ). Next, whether or not the value of the counter T becomes equal to the value of the counter U, that is, the number of the item and the encryption code for which the writing process is performed in the above step e ₂ is stored in the step b ₆ shown in FIG. It is determined whether or not the number of items and the number of the encryption code are equal (e ₄ ). If T = U, T is set to 0 (e ₅ ) assuming that the writing process of all the stored items and encryption codes is completed. Note that P ≠ 1, that is, the program mode m ₄
If the key S ₄ is not pressed, the operation is invalid.

The processing when the key S ₅ is depressed is shown in Figure 10. When the key S ₅ is pressed, the program mode flag P is set to 1 first.
It is determined whether or not (f ₁ ), and when P = 1, that is, in the case of the program mode m ₄ , 1 is added to the counter S (f
₂ ) On the other hand, if P ≠ 1, no processing is performed. This key S
The value of the counter S set by the operation of ₅ is used for writing the item and the encryption code as shown in step e ₂ of FIG. That is, key S ₄ and key S ₅
It is possible to perform programming by exchanging the contents of the item storage register Y and the cipher code storage register Z in a desired order by operating.

The processing when the key S ₆ is depressed is shown in Figure 11. When the key S ₆ is pressed, it is determined whether the item display mode flag Q is 1 (g ₁ ), and when Q = 1, that is, when the item display mode m ₅ is selected, the code sending flag R is set.
Is set to 1 and Q is set to 0 (g ₂ ). Then, the cipher code in the cipher code storage register Z having a register number equal to the value of the counter T is sent to the conversion circuit 29 shown in FIG. ₃ (g ₃ ).

The key processing is performed as described above, but in the timing-related processing performed at every 1/16 second timing, as shown in FIG. 12, the timing processing h ₁ , the mode detection processing h ₂ , and the display processing h _{3 are performed.} Are sequentially performed.

The time counting process h ₁ is performed by counting 1/16 seconds, seconds, minutes, hours, etc. in the time register W shown in FIG. 4 and storing these count values as time data.

Next, the mode detection process h ₂ and the display process h ₃ are specifically shown in FIG.

In the figure, first, it is judged whether or not the time display mode flag M is 1 (i ₁ ), and when M = 1, the time register W
The time data in the above is written in the display register X (i ₂ ), and the time is displayed on the display unit 2 (i ₃ ). This display example 15
It is shown in Figure (a).

If M ≠ ₁ in step i ₁ , it is determined whether the pass data setting mode flag N is 1 (i ₄ ).
When N = 1, the input processing when the path data is input from the key input unit 28 described above is performed (i ₅ ), and the input path data is written in the display register X (i ₆ ). It is displayed on the display unit 2 (i ₃ ). The display example is shown in FIG. 15 (b). In the figure, the path data is "0
011 ”is set.

If N ≠ 1 in step i ₄ , it is determined whether the item / code setting mode flag O is 1 (i ₇ ). When O = 1, the input process is performed when the item and the encryption code are input from the key input unit 28 (i
₆ ). Since the input items and the encryption code are stored in the registers Y and Z having the register numbers equal to the value of the counter U (step b6 in FIG. ₆ ), the stored contents are displayed next in the display register. Write to X (i ₉ ) and display on display unit 2 (i ₃ ). The display example is shown in FIG. 15 (c). The figure shows the case where the item "JEWEL" and the encryption code "0425" are set.

If O ≠ 1 in step i ₇ , it is judged whether or not the program mode P is 1 (i ₁₀ ), and if P = 1, it is stored in the item storage register Y having a register number equal to the value of the counter S. Display register X of the item being displayed
(I ₁₁ ) and display it on the display unit 2 (i ₃ ). The display example is shown in FIG. 15 (d). It should be noted that if the key S ₅ is pressed in sequence, the display contents will be in accordance with the register number by the processing of step f ₂ described above, for example, as shown in FIG.
It switches in order of (e), (f), (g).

If P ≠ 1 in step i ₁₀ , it is determined whether the item display mode flag Q is 1 (i ₁₂ ), and Q =
In the case of 1, the item stored in the item storage register Y having a register number equal to the value of the counter T is written in the display register X (i ₁₃ ) and displayed on the display unit 2 (i ₃ ).

For Q ≠ 1 in step i _12, that is, if the code transmitted mode flag R is 1, if the first, determines whether transmission of the cryptographic code is completed (i _14). If not completed, the cipher code sent to the conversion circuit 29 is converted into serial data in step g ₃ of FIG. 11 and sent as an optical signal by the LED 4 (i ₁₅ ). While this delivery is taking place
The fact that the encryption code is being transmitted is displayed on the display unit 2 (i ₁₆ ). This display is performed by blinking as shown in FIG. 15 (h), for example.

On the other hand, if the transmission of the encrypted code in step _{i 14} is completed, 1 is added to the counter T _(i 17),
Then, the item display mode flag Q is set to 1 and the code sending mode flag R is set to 0 (i ₁₈ ). Then, the process returns to the step i _13, performs the same process based on the value of 1 the added counter T as described above.
In this case, the key S ₄ , shown in FIGS. 9 and 10,
Programming with S _5, that is, such after replacement of the register contents is performed, so that the item in accordance with the programmed sequence is displayed.

Next, how to operate the above-mentioned keys S _{1 to} S ₆ and changes in the display mode based on those operations will be described again with reference to FIG.

First, in the state of the time display mode m ₁ , the time display as shown in FIG. 15 (a) is performed as described above. Therefore, when setting pass data, the key S ₁ is pressed. Then, the mode is switched to the pass data setting mode m ₂ , and in this state, the pass data (for example, “0011”) is input from the key input unit 28.
Enter. At this time, the display as shown in FIG. 15 (b) is performed.

Next, when setting the item and the encryption code, the key S ₂ is pressed from the state of the pass data setting mode m ₂ . Then, at the same time the path data is stored in the path data storage register H, since switched to the item code setting mode m _31, and items and cryptographic code from the key input unit 28 in this state (e.g., "JEWEL", "0425 ))
Enter. At this time, the display as shown in FIG. 15 (c) is performed. Next, when the key S ₁ is pressed, the above item and the encryption code are stored in the register, and at the same time, the mode is switched to the next item code setting mode m ₃₂ , so that the next item and the encryption code can be set.

By alternately performing the operation of the key S ₁ and the input of the item and the encryption code in this manner, as shown in FIG.
Multiple items and encryption codes can be set.

In order to program the order of sending the encryption codes set in this way, first return to the state of the time display mode m ₁ and then press the key S ₃ . Then, the mode is switched to the program mode m ₄₁ , so that the key S ₅ is first pressed a necessary number of times to display the item to be set first among the above items and the encryption code. At this time, the first
Treatment of 0 Figure, the register number of a register which is stored in the item is equal to the value of the counter S, if then press key S _4, the process in Step e ₂ of FIG. 9, the key S ₅ The designated desired item and encryption code can be exchanged in the first register. At the same time, the program mode is switched to the next program mode m ₄₂ , so that the second item and the encryption code can be set by operating the key S ₅ . Similarly, by operating the keys S ₅ and S ₄ , all items and encryption codes can be exchanged in a desired order.

In order to send the encrypted code programmed in this way, the predetermined pass data is input in the time display mode m ₁ and then the key S ₂ is pressed. Here, the item display mode m is set only when the input path data and the path data stored in the path data storage register H match.
_The code is switched to ₅ , and the encryption code can be transmitted. Then, the first programmed item in the program mode m ₄ is first displayed on the display unit 2, for example, FIG. 15 (e).
Is displayed. So by pressing the key S _6, it switches to cord feeding mode m _6, together with the encryption code corresponding to the item is delivered, during its delivery FIG. 15 (h)
The display during transmission is performed by blinking as in. When the transmission of the encryption code is completed, the above-mentioned display during transmission is also completed, and the mode is switched to the item display mode m ₅ . At this time, the second programmed item is displayed on the display unit 2. Like this one
When one encryption code is sent, the next programmed encryption code item is displayed by itself.

It should be noted that the present invention is not limited to the above-described wristwatch, and may be a pocket-type small computer or other wearable item. Further, in the above-mentioned embodiment, the jewelry box is shown as the electronic lock device, but the present invention is not limited to this and can be applied to an electronic lock built in a door of a house, an office, a car or the like.

Further, the above-mentioned RAM is a non-volatile memory, especially EEP.
It is preferably a ROM. In this way, even if the battery of the wristwatch or the like runs out, the encryption code will not disappear.

Further, as a medium for transmitting the encryption code, L
Instead of light from the ED, it may be radio waves, sound waves, or the like.

Further, although the full name may be used for the item, only the initial letters or only two to three letters from the initial letters may be used. The items may be sequentially specified with one switch.

Furthermore, the pass data is not limited to the numbers as described above, and for example, the number of times of operation of a predetermined key or the operation time, a combination of keys for various operations, or a voice recognition function is incorporated into a specific voice or It may be one that allows recognition of words.

〔The invention's effect〕

As described above, according to the present invention, a plurality of cryptographic codes can be stored, and the cryptographic codes can be sequentially transmitted in a desired order. Therefore, one device can handle a plurality of electronic locks. Moreover, it is not necessary to sequentially select the encryption code. In particular, since the types of locks that need to be opened every day and the order in which they are opened are constant, it is desirable that the necessary cryptographic codes and their sending order are also constant. Since this is possible in the present invention, it is possible to save the trouble of selecting a necessary encryption code by setting the desired transmission order first, and to send the encryption code with a wrong selection error. There is no such thing.

[Brief description of drawings]

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 the lock mechanism is released by the same embodiment, and FIG. 3 is shown in the same embodiment and FIG. FIG. 4 is a circuit diagram showing the circuit configuration of the jewelry box, FIG. 4 is a diagram showing the internal configuration of the RAM shown in FIG. 3, and FIGS. 5 to 13 are flowcharts showing the processing operation of the same embodiment. FIG. 15 is a diagram showing a change in display mode associated with a key operation in the same embodiment, and 15 (a) to 15 (h) are diagrams showing respective display examples in the same embodiment. 4 ... LED, 21 ... ROM, 23 ... RAM, 29 ... conversion circuit, Y ... item storage register, Z ... encryption code storage register, O ... item / code setting mode flag, P ... program Mode flag, Q ... Item / display mode flag, R ... Code sending mode flag, S, T, U ... Counter.

Claims (1)

[Claims] 1. An encryption code storage means for storing an encryption code for unlocking an electronic lock, and an order is set such that the encryption codes stored in the encryption code storage means are sent out in a desired order. An electronic key device comprising: an order setting means; and an encryption code sending means for sequentially sending the encryption codes according to the order set by the order setting means.