JPH073133B2 - 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]

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 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.

Recently, electronically controlled locking devices have been developed in place of the mechanical locking mechanism using the lock and key described above. As such a lock device, for example, a plurality of numeric buttons are provided on the lock side, and by pressing a button corresponding to a predetermined number, an electrical signal (for example, high or low voltage, high or low current, on / off, etc.) ), The electronic information (“1”, “0”) is input, and there is an electronic device that attempts to open and close electronically without a key. Also known are devices that can be opened and closed in a contactless manner from a distance by remote control using radio waves, and devices that use a magnetic stripe card in which an encryption code is recorded on a magnetic tape.

[Problems of conventional technology]

In the above-mentioned conventional device using a mechanical collating means, it is extremely easy to duplicate or forge a key. Also, since a key is required for each lock,
It will be necessary to carry many keys. Further, there are many problems in terms of operation, operation, and security, such as the need to open and close each lock manually. Further, when changing the lock, it is necessary to replace all the keys, and it is difficult to perform integration or centralized control, and there is a problem in compatibility and systematization.

On the other hand, even in the electronically controlled device having the above-mentioned number buttons, it is necessary to remember the number to be input for each lock, and forget the numbers when there are multiple locks. There is a drawback that it is easy to get it. In a device using a remote control, since a remote control device must be prepared for each lock, it is necessary to carry a large number of these and there is a high risk of loss. Even in a device using a magnetic stripe card, it is necessary to carry a large number of these cards in association with each lock, and there is a problem that they are easily lost. Further, these devices have a security problem because the encryption code for opening the lock is fixed.

[Object of the Invention]

In view of the above-mentioned conventional problems, it is an object of the present invention to provide an electronic key device which can deal with a large number of locks with one lock and which has excellent security and crime prevention functions.

[Main points of the invention]

In order to achieve the above object, the present invention can store an encryption code for unlocking an electronic lock together with an item corresponding to each electronic lock, and corresponds to a specified item only when input path data match. The encryption code can be output.

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 LEDs 4 are provided on the side end surface of the display unit 2.
These keys S _1, S _2, S ₃ and equol in the key group 3a (=) key S _4, minus (-) key S _5, plus (+)
The key S ₆ , which will be described in detail later, has a function of switching the display mode of the display unit 2.

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 jewelry box 10 is composed of a main body 11 and a lid 12, 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 to the inside of the lid 12, and is electrically connected to the lock mechanism. When an optical signal corresponding to the number (“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 key is pressed. The above lock mechanism can be released only by the (key).

FIG. 3 shows a circuit configuration of the watch body 1 and the jewelry box 10 shown in FIGS. 1 and 2.

First, the watch body 1 will be described. The ROM 21 is a fixed memory that contains programs and data that control the entire system. The address control unit 22 is an address unit of the ROM 21 that measures the flow of the program.
The outputs of 21, the calculation unit 25, and the frequency dividing circuit 27 are input. The RAM 23 is a memory that outputs the data stored at the address specified by the ROM 21 to the arithmetic unit 25 and the conversion circuit 29, and inputs and stores the result processed and processed by the arithmetic unit 25. Instruction decoder 24 is RO
This block decodes the output of M21 and sends control signals 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, and outputs the result to the RAM designated by the ROM 21.
Write to address 23 and display on display unit 2. The display unit 2 is the same as that shown in FIG. Oscillator
26 outputs a clock signal of a constant cycle, and the frequency dividing circuit 27 divides the clock signal to a predetermined frequency and outputs a clock signal for every 1/16 second to the address control unit 22, for example.
The key input unit 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 H (high) and L (low) electric signals. The transistor 30 is turned on and off according to the output signal of the conversion circuit 29, and the LED 4 is turned on and off accordingly, so that an optical signal including predetermined data is output. this
The LED 4 is the same as that shown in FIG.

Next, the circuit configuration of the jewelry box 10 side 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 is attached to the inner part 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 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. The conversion circuit 34 converts the output signal of the low-pass filter 33 into a digital signal (encryption code). The coincidence detection circuit 35 is the digital switch described above.
The number set in 14 is compared with the digital signal (encryption code) output from the conversion circuit 34, and when the contents match, a match signal is output. Lock mechanism 36
2 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.

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,
Pass data storage register H, pass data setting flag L,
Electronic key operation mode flag M, pass data input mode flag N, mode selection flag O, pass data change mode flag P, item / code change setting flag Q, item input mode flag R, code output mode flag S, timer T, etc. It consists of

The time register W is a register that stores time data such as hours, minutes, seconds, 1/16 seconds, 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 are composed of a plurality of registers, and each register stores an item corresponding to various locks and an encryption code set for each item. For example, in FIG. 4, the item is “JEWEL” for the jewelry box 15 as shown in FIG. 2, and the encryption code is “0425” corresponding to it.
Is set. For home doors, car doors, and office doors, enter the items as "DOOR" and "CA," respectively.
"R" and "OFFICE" are set, and 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 a secret number or symbol known only to a specific person, and stores pass data "0011" in FIG. .

The pass data setting flag L is a pass data storage register H.
This is a flag that is set to "1" when path data is set in. The electronic key operation mode flag M is a flag that is set to "1" in the display modes (electronic key operation mode) other than the time display mode related to the electronic key operation described below. The pass data input mode flag N, the mode selection flag O, the pass data change mode flag P, the item / code change setting flag Q, the item input mode flag R, and the code outputting mode flag S are the same as the display mode of the display unit 2 described above. , Each pass data input mode,
This flag is set to "1" in the mode selection mode, pass data change mode, item / code change setting mode, item input mode, and code output mode. The timer T is a timer that measures time in units of seconds, and the measurement result is used as a timing for automatically switching a predetermined display mode.

The main operation of this 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 ). This time-related processing is executed by the time-of-day clock signal output from the frequency dividing circuit 27 shown in FIG. 3 every 1/16 second, as will be described later in detail, and the time data obtained by this processing is , And is stored in the time register W of the RAM 23 shown in FIG.

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, by pressing the key,
This is processing performed by the operation of the ROM 21, RAM 23, etc. based on the signal output from the key input unit 28 shown in FIG.

Hereinafter will be described a change in the processing and display mode when the key S ₁ to S ₆ is operated.

FIG. 6 is a flowchart of the processing when the key S ₁ is pressed, and FIG. 16 shows the 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 ). As shown in FIG. 16, the flag M is a mode in which the time is displayed when 0 and each electronic key is displayed when 1, and if M ≠ 1, that is, the time display mode (see FIG. 16). If the mode is the middle mode m ₁ ), M is set to 1, the timer T is reset (b ₂ ), and the display mode is switched to the electronic key mode (mode m _{2 in} FIG. 16) (b ₃ ). ).

If M = ₁ in step b ₁ , that is, the electronic key operation mode (mode m _{0 in} FIG. 16),
It is judged whether or not the code change setting flag Q is 1 (b ₄ ), and if Q = 1, that is, if it is the item / code change setting mode (mode m _{10 in} FIG. 16), Q is 0. And the mode selection flag O is set to 1 (b ₅ ), and the mode is switched to the mode selection mode (mode m ₆ in FIG. 16). On the other hand, if Q ≠ 1 in step b ₄ ,
It is judged whether or not O = 1 (b ₆ ), and when O = 1, that is, when the mode selection mode is m ₆ , 0 is set to O and 1 is set to Q (b ₇ ). Switch to item / code change setting mode m ₁₀ . If O ≠ 1 in step b ₆ , M is set to 0 (b ₈ ), and the mode is switched to the time display mode m ₁ .

The processing when the key S ₂ is depressed is shown in Figure 7. When the key S ₂ is pressed, it is first determined whether or not the electronic key operation mode flag M is 1 (c ₁ ), and if M ≠ 1, the process is not performed and M
When = 1, it is determined whether the pass data change mode flag P is 1 (c ₂ ). If P = 1, that is, if it is the pass data change mode (mode m _{9 in} FIG. 16), P is set to 0 and the mode selection flag O is set to 1 (c ₃ ). Switch to ₆ . On the other hand, in step C ₂ , if P ≠ 1, it is determined whether or not O = 1 (C ₄ ), and if O = 1, O is set to 0 and the path data change mode flag P is set to 1. (C ₅ ) and switch to pass data change mode m ₉ .

The processing when the key S ₃ is pressed is shown in FIG. When the key S ₃ is pressed, it is first determined whether or not the electronic key operation mode flag M is 1 (d ₁ ). If M ≠ 1, the process is not performed, and if M = 1, the pass data is input. mode flag N to determine whether 1 (d _2). When N = 1, that is, in the pass data input mode (mode m _{3 in} FIG. 6), N is set to 0 (d ₃ ) and the electronic key mode m ₂ is switched to (d ₄ ).

When N ≠ 1 in step d ₂ , it is determined whether the pass data setting flag L is 1, that is, whether the pass data is set in the pass data storage register H (d ₅ ). When L = 1, N is set to 1 (d ₆ ), and the mode is switched to the pass data input mode m ₃ . Meanwhile, step d ₅
If L ≠ 1, it is determined whether the mode selection flag O is 1 (d ₇ ). If O = 1, O is set to 0 and N is set to 1 (d ₈ ). Switch to pass data input mode m ₃ .

The processing when the key S ₄ is pressed is shown in FIG. When the key S ₄ is pressed, it is first determined whether M = 1 (e ₁ ), and M ≠
If it is 1, no processing is performed, and if M = 1, it is determined whether the item input mode flag R is 1 (e ₂ ). If R ≠ 1, no processing is performed. If R = 1, that is, in the item input mode (m _{7 in} FIG. 6), R is set to 0 and the code outputting mode flag S is set to 1. Set (e ₃ ),
Switch to the code output mode (mode m _{8 in} Fig. 6). Then, the cipher code corresponding to the input item is taken out from the cipher code storage register Z in FIG. 4, and this cipher code is sent to the conversion circuit 29 shown in FIG. 3 (e ₄ ).

FIG. 10 shows the processing when the key S ₅ is pressed. When the key S ₅ is pressed, it is similarly determined whether or not M = 1 (f ₁ ), and when M = 1, it is determined whether or not the mode selection flag O is 1 (f ₂ ), If O = 1, that is, in the mode selection mode m ₆ , O is set to 0 and the item input mode flag R is set to 1 (f ₃ ) to switch to the item input mode m ₇ .

On the other hand, if O ≠ 1 in step f ₂ above, R = 1
(F ₄ ), if R ≠ 1, no processing is performed. If R = 1, R is set to 0 and O is set to 1 (f ₅ ) to select the mode. Switch to mode m ₆ .

FIG. 11 shows the processing when the key S ₆ is pressed. When the key S ₆ is pressed, it is similarly determined whether M = 1 (g ₁ ), and when M = 1, it is determined whether the item / code change setting flag Q is 1 (g ₂ ). . If Q ≠ 1, no processing is performed, and if Q = 1, the next item and encryption code are read (g ₃ ).

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

The above timing process (h ₁ ) is specifically shown in FIG. First 1/16
Whether or not there is a clock signal for each second is checked (i ₁ ), and if there is, a 1/16 is added to the 1/16 second counter (not shown) in the time register W of the RAM 23 shown in FIG. (I ₂ ). Then, it is judged whether or not this 1/16 second counter has counted 16, that is, whether 1 second has elapsed (i ₃ ), and when 1 second has elapsed, the 1/16 second counter is reset and 1 is added to the second counter (not shown) in the time register W (i ₄ ). Next, it is judged whether or not the second counter has counted 10, that is, whether 10 seconds have elapsed (i ₅ ), and when 10 seconds have elapsed, the second counter is reset and the time register W
Add 1 to the 10-second counter (not shown) (i ₆ ). Then, looking at whether the 10-second counter has counted 6, ie, whether 1 minute has elapsed (i ₇ ), if 1 minute has elapsed, the 10-second counter is reset and the minute counter in the time register W is reset. 1 is added to (not shown) (i ₆ ), and then another timing process is performed (i ₉ ).

The mode detection processing (h ₂ ) and display processing (h ₃ ) shown in FIG. 12 are specifically shown in FIGS. 14 and 15.

In FIG. 14, first, the electronic key operation mode flag M is 1
Whether or not it is judged (j ₁ ), and when M ≠ 1, the time is displayed (j ₂ ). This time display is performed by temporarily writing the time data written in the time register W by the time counting process shown in FIG. 13 into the display register X and then displaying it on the display unit 2. The display example is shown in FIG.

If M = ₁ in the above step j ₁ , it is judged whether the pass data input mode flag N is 1 (j ₃ ), and if N = 1, whether the pass data setting flag L is 1 or not, that is, the pass data is set. Judge whether it has been completed (j ₄ ). If L = 1, input processing of the path data is performed (j ₅ ), and it is determined whether the set path data and the input path data match (j ₆ ). If they match, with the path data input mode flag N to zero, by setting 1 to the mode selection flag O (j _7), switching the mode selection mode m _6, the mode selection display (j _8). An example of this display is shown in FIG. 17 (d).

On the other hand, if they do not match in step j ₆ , error processing is performed (j ₉ ), and the error display mode m ₅ is switched to and error display is performed (j ₁₀ ). If L ≠ 1 at step j ₄ , N is set to 0 (j ₁₁ ), and the mode is switched to the path data setting mode m ₄ to display the path data setting (j ₁₂ ).

If N ≠ 1 at step j ₃ , it is judged whether L = 1 [j ₁₃ ], and if L ≠ 1, the path data setting mode m
_Since it corresponds to ₄ , the path data is set and L is set to 1 (j ₁₄ ). Then, the set path data is displayed (j ₁₂ ).

For L = 1 in step j _13, the mode selection flag O is determined whether 1 (j _15), in the case of O = 1 the mode selection display (j _16). An example of this display is shown in FIG. 17 (d).

If O ≠ 1 at step j ₁₅ , it is judged whether the pass data change mode flag P is 1 (j ₁₇ ). P =
If it is 1, the path data is changed (j ₁₈ ), and the changed path data is displayed (j ₁₉ ).

If P ≠ 1 at step j ₁₇ , it is judged whether the item / code change setting flag Q is 1 in FIG. 15 (k ₁ ). When Q = 1, the item and encryption code change setting processing is performed (k ₂ ), and the changed item and encryption code are displayed (k ₃ ).

If Q ≠ 1 in step k ₁ , it is determined whether the item input mode flag R is 1 (k ₄ ), and if R = 1, the item input processing is performed (k ₅ ). This processing is performed by writing the input item data in the display register X. Next, the item written in the display register X is displayed (k ₆ ). The display example is shown in FIG. 17 (e). In the figure, an item "JEWEL" indicating a jewelry box is entered.

If R ≠ 1 in step k ₄ , it is determined whether the code output mode flag S is 1 (k ₇ ). When S = 1, the cryptographic code corresponding to the item input in step k ₅ is output to the conversion circuit 29 shown in FIG. 3 to perform the process of driving the LED 4 (k ₈ ). Then, it is judged whether the output of the cipher code is completed (k ₉ ), and if the output is still in progress,
As shown in FIG. 17 (f), the output is displayed by blinking (k ₁₀ ). The encryption code is output as an optical signal from the LED 4 shown in FIG. 3, and is received by the photodiode 31 of the jewelry box 10. If the digital switch 14 number and the encryption code match, the lock is released. If the code output is completed in step k _9, sets 1 to item input mode flag R with a code output in mode flag S to 0 (k _11), performs the item input display (k
₆ ).

If S ≠ 1 at step k ₇ , that is, the state has just been switched from the time display mode m ₁ to the electronic key mode m ₂ . In this case, timer processing shown in FIG. 4 is performed by the timer T (k ₁₂ ), and it is determined whether 2 seconds have elapsed (k ₁₃ ). If 2 seconds have not passed, the electronic key mode display as shown in FIG. 17 (b) is displayed (k ₁₄ ). On the other hand, the case where after two seconds to reset the timer T, 1 is set in the path data input mode flag N (k _15), for inputting display of path data (k _16).
This display example is shown in FIG. 17 (c). In the figure, "0011"
I just entered the path data.

Next, the change of the display mode based on the operation of the keys S _{1 to} S ₆ described above will be described again with reference to FIG.

First, in the state of the time display mode m ₁ , as described above,
The time is displayed as shown in Fig. 17 (a). Therefore,
When operating the electronic keys, press key S _{1 in} this state.
Then, the mode is switched to the electronic key mode m _2, and FIG. 17 (b) is displayed.
The electronic key display such as

Two seconds after switching to the electric key mode m ₂ , the mode is switched to the pass data input mode m ₃ . When the pass data, for example, "0011" is input in this state, the input display as shown in FIG. 17 (c) is performed. Here, only when the input pass data and the preset pass data match, the mode is switched to the mode selection mode m ₆ , and the electronic key operation can be performed. If in the case of disagreement I conversion cut the error display mode m _5, error display is performed. After 1 second has passed, the mode switches to pass data input mode m ₃ again, but if there are three errors, time display mode
Return to m ₁ . As described above, a person who does not know the set pass data cannot perform the electronic key operation, that is, the output of the encryption code, the setting change of the item and the encryption code, the change of the pass data, and the like. If the pass data has not been set, it will switch to the pass data setting mode m ₄ , so if you set the pass data arbitrarily in this state and then press the key S ₃ , the pass data input mode m ₃ will appear. Become.

When the pass data match and the mode is switched to the mode selection mode m ₆ , a display as shown in FIG. 17 (d) is performed. So If you want to unlock the electronic lock, press the key S _5. Then, it switches to item input mode m ₇ . In this state, when an item corresponding to a desired electronic lock, for example, "JEWEL" in the case of a jewelry box is input, the input display is performed as shown in Fig. 17 (e). In order to output the code, for example, the light output direction of the LED 4 in FIG. 1 may be directed to the keyhole 15 in FIG. 2 and the key S ₄ may be pressed. Then,
In the output of the cipher code is switched to the code output in mode m _8, urchin flashing of Figure No. 17 (f) is performed. When the output of the encryption code is completed, the mode is switched to the item input mode m ₇ again. As described above, when it is desired to output the encryption code to the electronic lock, it is not necessary to enter the encryption code on the spot, and only the desired electronic lock item is input.

If you want to change or set the item and encryption code, press the key S ₁ in the mode selection mode m ₆ . Then, the mode / code change setting mode m ₁₀ is switched to, and the item and the encryption code can be changed or set in this state. Each time you press the key S _6, go switched sequentially item and the encryption code. Press key S ₁ again to return to mode selection mode m ₆ .

To change the pass data, press key S ₂ in mode selection mode m ₆ . Then, pass data change mode m ₉
The path data can be changed in this state. If you want to return to the mode selection mode m _6, may press the key again S _2.

When it is desired to switch from the electronic key operation mode m ₀ , that is, the modes m _{2 to} m ₁₀ related to the electronic key operation to the time display mode m ₁ , the key S ₁ is pressed.

The present invention is not limited to the above-described wristwatch, but may be a pocket-type small computer or other wearable device. 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 RAM described above is preferably a non-volatile memory, particularly an EEPROM. In this way, even if the battery of the wristwatch or the like runs out, the encryption code will not disappear.

Furthermore, as a medium for transmitting the encryption code, LE
Instead of the light from D, 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, since each electronic lock can be opened and closed by outputting the encryption code for each item corresponding to these, a single device can handle a large number of locks. It's convenient, and you don't have to carry a lot of keys or cards, so you don't have to worry about losing it or leaving it behind. In addition, a desired encryption code can be immediately obtained only by designating an item, so that a quick operation can be performed without an erroneous operation. Furthermore, since the encryption code can be set and changed arbitrarily, the security problem due to fixing one encryption code as before is solved, and the encryption code is output only when the input path data match. Since a third party who does not know the pass data cannot output the encryption code, the security and crime prevention functions are excellent and the utility is very high.

[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 15 are flowcharts showing the processing operation of the same embodiment. FIG. 17 is a diagram showing a change in display mode associated with a key operation in the same embodiment, and 17 (a) to 17 (f) 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, H ... Pass data storage register, L ... Pass data setting flag, M ... Electronic key operation mode flag, N ...
Pass data input mode flag, O ... Mode selection flag, P ... Pass data change mode flag, Q ... Item
Code change setting flag, R ... Item input mode flag,
S …… Mode flag during code output.

Claims (3)

[Claims] 1. An item storage means for storing an item corresponding to each electronic lock, and an encryption code for storing an encryption code for unlocking the electronic lock corresponding to each item stored in the item storage means. Storage means, path data storage means for storing arbitrary path data in advance, path data input means for inputting arbitrary path data, path data input by the path data input means, and storage in the path data storage means Match detection means for detecting a match with the generated path data, item designating means for designating a desired item from the items stored in the item storage means, and when a match is detected by the match detecting means And an encryption code sending means for sending an encryption code corresponding to the item designated by the item designation means to the electronic lock. Over apparatus. 2. The encryption code transmitting means comprises an LED,
The electronic key device according to claim 1, wherein the encryption code is transmitted as an optical signal from the ED. 3. The electronic key device according to claim 1, wherein the encryption code storage means is a non-volatile memory.