JPH07961B2 - 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 security device such as doors and gates of buildings and rooms, doors of cars, doors and lids of safes and desks, lockers, drawers, etc., mechanical locks and lock mechanisms by keys are provided. . This is a combination of mechanical information such as geometrical irregularities in the lock, the length and position of pins and cylinders, or the presence or absence of these, as well as mechanical information such as the geometrical irregularity and length or position of keys, or the presence or absence of these. The combination is checked mechanically or mechanically, and only when they match, the lock mechanism is released and the lock is opened.

On the other hand, in recent years, a device has been developed which can be opened and closed in a contactless manner from a distance by remote control using a radio wave or the like, instead of the above-mentioned mechanical lock and key lock mechanism. This is provided with a control device in place of the conventional key, and a radio wave or the like including a predetermined code is sent from this device to a so-called electronic lock.

[Problems of conventional technology]

In the above conventional remote control device, if the remote control device is a dedicated device by itself, if the control device is incorporated into a watch or other device, the number of operation switches is large, so there is a risk of erroneous operation. , When the above control device is incorporated into a wristwatch, leave the wristwatch on the wrist,
It is difficult to properly set the radio wave transmission method to the electronic lock. Therefore, if the lock does not open even if you perform the radio wave transmission operation, you may not open it because the specified code is not sent to the lock, or it may open even if the specified code is sent. It may become unclear if there is none, and it may be difficult to deal with it afterwards.

[Object of the Invention]

In view of the above conventional problems, it is an object of the present invention to provide an electronic key device that can reliably send a predetermined code to an electronic lock and can confirm that the code has been sent.

[Main points of the invention]

In order to achieve the above object, the present invention transmits a predetermined cryptographic code to an electronic lock after a predetermined time has elapsed after operating a predetermined switch, and during the transmission of the cryptographic code, The notification means is used to notify that the transmission is in progress.

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 display unit 2 is
The keys S ₁ , S ₂ , S ₃ and the LED 4 are provided on the side end face thereof. These keys S _1, S _2, S ₃ and equal (=) key S ₄ in the key group 3a, the negative (-) key S _5, plus (+) key S ₆ is described in detail later, the display It has a function of switching the display mode of the section 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, inside the lid 12, a digital switch 14 is attached to rotate the four dials to adjust the numbers.
The lock mechanism is electrically connected. The number set by this digital switch 14 (“042
The optical signal corresponding to 5 ") is output from the LED 4 of the wristwatch of FIG. 1 and is received through the keyhole 15, or only when a predetermined key (key) is used to release the above lock mechanism. Has become.

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. 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 regulates the flow of the program.
The outputs of the OM21, 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 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, 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. The oscillator 26 outputs a clock signal having a constant cycle, and the frequency dividing circuit 27 divides the clock signal to a predetermined frequency to divide it by, for example, 1/16.
It outputs a clock signal for every second to the address control unit 22. 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. According to the output signal of the conversion circuit 29, the transistor 30
Is turned on and off, and the LED 4 is turned on and off accordingly, so that 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 side will be described. The photodiode 31 receives the optical signal from the LED 4 and turns on / off to convert the optical signal into an electric 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
Is composed of the projection 13 and the engaging portion of the main body 11 in FIG. 2, and when the above-mentioned coincidence signal is received, the engagement is released 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, number of key operations It is composed of a counting register U, timers T, V and the like.

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” correspondingly.
Is set. For house doors, car doors, and office doors, set the items to "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 secret numbers or symbols known only to a specific person. In FIG. 4, the pass data "0011" is stored. There is.

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 a display mode (electronic key operation mode) related to an electronic key operation described below other than the time display mode. 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 display modes of the display unit 2 described above. , Pass data input mode, mode selection mode, pass data change mode, item
This flag is set to "1" in the code change setting mode, item input mode, and code output mode. The key operation count register U is a register that counts the number of times the key S ₄ is operated. The timers T and V are timers that measure time in units of seconds. The measurement result of the timer T is used as a timing for automatically switching a predetermined display mode, and the measurement result of the timer V is an encryption code. Used for timing when sending. Each display mode described above is shown in FIG.

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, which will be described in detail later, is executed by the time-of-day clock signal output from the frequency dividing circuit 27 shown in FIG. 3 every 1/16 second.
The time data obtained by this processing 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. shown in FIG. ₁ are pressed, 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, the processing and the change of the display mode when the keys S _{1 to} S ₆ are pressed will be described.

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. If 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 ). The flag M is a mode in which the time is displayed when 0 and each electronic key is displayed when 1 as shown in FIG. 16. If M ≠ 1,
That is, in the time display mode (mode m _{1 in} FIG. 16), M is set to 1, timer T is reset (b ₂ ), and the display mode is electronic key mode (mode in FIG. 16). Switch to m ₂ ) (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 the item / code change setting mode (mode m _{10 in} FIG. 16) is set to 0, Q is set. Along with the setting, 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, if P ≠ 1 in step c ₂ , 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 ) 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 = 1 is set (d ₈ ), and the pass Data input mode
Switch to 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 ). When R ≠ 1, no processing is performed, and when R = 1, that is, in the item input mode (mode m _{7 in} FIG. 6), it is determined whether the register U for counting the number of key operations has reached 3. to determine (e _3). When U ≠ 3, 1 is added to U (e ₄ ), when U = 3, R is set to 0, the code output mode flag S is set to 1, and the timer V is reset (e 4). ₅ ). That is, unless key S ₄ is pressed four times, press S
Will never be 1.

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, and if R = 1, R is set to 0 and O
Set 1 to (f ₅ ) and switch to mode selection 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 cipher 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, as shown in FIG. 12, the timing processing (h ₁ ), the mode detection processing (h ₂ ), Display processing (h ₃ ) is sequentially performed.

The above timing process (h ₁ ) is specifically shown in FIG. First, 1 /
Whether or not there is a clock clock signal every 16 seconds (i ₁ ), if there is, add 1 to the 1/16 second counter (not shown) in the time register W of RAM 23 shown in FIG. Yes (i ₂ ). Then, it is judged whether or not this 1/16 second counter is set to 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 10 seconds in the time register W are reset. Add 1 to a 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 ₈ ), and then another timing process is performed (i ₉ ).

The mode detection process (h ₂ ) and the display device (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 , set N to 0 (j
₁₁ ) ,, Switch to the pass data setting mode m ₄ and display the pass data setting (j ₁₂ ).

If N ≠ 1 at step j ₃ , it is judged whether L = 1 (j ₁₃ ). If L ≠ 1, the path data setting mode m
_Since it corresponds to ₄ , the path data is set and L = 1 is set (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 same figure, an item "JEWEL" indicating a jewelry box is entered in the figure.

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 timer V is started (k ₈ ), and it is determined whether 3 seconds have passed (k ₉ ). If 3 seconds have not passed, the item input display is continued (k ₆ ), while if 3 seconds have passed, code output processing is performed (k ₁₀ ). This processing is performed by outputting the encryption code corresponding to the item input in step k ₅ to the conversion circuit 29 shown in FIG. 3 and driving the LED 4. Then, it is judged whether or not the output of the encryption code is completed (k ₁₁ ), and if it is still being output, it is shown in FIG. 17 (f).
The output is displayed by blinking as shown in (k ₁₂ ). 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 _11, a code output in mode flag S as well as in 0, item input mode flag R
Is set to 1, and the key operation count register U
From then to 0 (k _13), perform the item input display (k _6).

If S ≠ 1 at step k ₇ , time display mode m ₁
The electronic key mode m ₂ has just been switched to. In this case, the timer T shown in FIG. 4 is started (k ₁₄ ) and it is determined whether 2 seconds have elapsed (k ₁₅ ). If two seconds have not passed, the electronic key mode display as shown in FIG. 17 (b) is displayed (i ₁₆ ). On the other hand, when two seconds have passed, the timer T is reset, the pass data input mode flag N is set to 1 (k ₁₇ ) and the pass data is displayed (k ₁₈ ). This display example is shown in FIG. 17 (c). In the figure, the path data "0011" has just been input.

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 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 electronic key mode m ₂ ,
Switch to 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 they do not match, the mode is switched to the error display mode m ₅ and the error is displayed. After 1 second, pass data input mode again
It switches to m ₃ , but if there are three errors, it returns to the time display mode 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, pass data setting mode m ₄
Since switching to, by pressing the key S ₃ pass data in this state from the arbitrarily set, the path data input mode m _3.

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).

To output the encryption code corresponding to the item, press the key S ₄ four times, and the output starts 3 seconds after that. Since there is a margin in the output to the 3 seconds of operation after the end cryptographic code key S _4, as LED4 light output direction in FIG. 1 for example within the three seconds faces the keyhole 15 in Figure 2, exactly Can be aligned to. Also, in order to output the encryption code, it is necessary to press the key S ₄ four times as described above,
Those who do not know this operation cannot output the encryption code. Furthermore, Kawari in the output of the cipher code is switched to the code output in mode m _8, since flashing as shown in Figure No. 17 (f) are carried out, can be known easily and surely that is being output. When the output of the encryption code is completed, the mode is switched to the item input mode m ₇ again.

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 is switched to the item / code change setting mode m ₁₀ , 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, the mode is changed to the pass data change mode m ₉ , and the pass 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.

To switch from the electronic key operation mode m ₀ of each mode m _{2 to} m ₉ to the time display mode m ₁ , press the key S ₁ .

The present invention is not limited to the above-described wristwatch, but may be a pocket-type small computer, or any other item that can be worn on the body. Further, in the above embodiment, the jewel 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 incorporated in a door of a house, an office, a car, or the like.

In addition to the blinking display as described above, the notification means may be a device that emits an alarm sound. Mentioned above
RAM is preferably non-volatile memory, especially EEPROM. In this way, even if the battery of the wristwatch or the like runs out, the encryption code will not disappear.

Was to push the key S _{4 4} times in the case of outputting an encryption code, the present invention is not limited to this, it may be a more complex or simple operation. The key operation time may be characterized, or various keys may be combined and operated. The medium for transmitting the encryption code may be radio waves, sound waves, etc., instead of light from LEDs.

The item may use a full name, but may have only an initial letter or only two to three letters from the initial letter. The items may be sequentially specified with one switch.

The pass data is not limited to the numbers described above. For example, it is possible to recognize a specific voice or word by incorporating a predetermined number of key operations, operation time, various operation key combinations, or incorporating a voice recognition function. It may be one.

〔The invention's effect〕

As described above, according to the present invention, it is possible to reliably know by notification that the encryption code is being sent to the electronic lock. Therefore, while the above notification is being performed (that is, while the encryption code is being transmitted), the electronic key device must be accurately aligned with the electronic lock so that the encryption code can be transmitted accurately. If you do not open the lock, you know that this is not a mistake in sending the encryption code, but it does not open even though the encryption code was sent correctly, so you can take action after that. Can be done easily.

Further, since the encryption code is sent after a predetermined time has elapsed after the switch operation, the above-mentioned alignment can be performed after the switch operation is surely performed, and the notification means informs that the code is being sent. It is also easy to know if the alignment was in time for delivery.

[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, FIGS. 5 to 15 are flowcharts showing the processing operation of the same embodiment, and FIG. The figure which shows the change of the display mode with the key operation in the same execution example, Figure 17 (a)-(f) is the figure which shows each display example in the execution example. 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 ... Code output mode flag, T, V ... Timer, U ... Register for counting key operation times.

Claims (2)

[Claims] 1. An encryption code storage means for storing an encryption code for unlocking an electronic lock, an encryption code transmission means for transmitting the encryption code to the electronic lock, and the encryption code transmission means for storing the encryption code. Switch means for sending the cryptographic code, timer means for sending the cryptographic code by the cryptographic code sending means after a lapse of a predetermined time after the operation of the switch means, and sending the cryptographic code by the cryptographic code sending means An electronic key device, comprising: an informing means for informing that the encryption code is being transmitted during the entire period. 2. The electronic key device according to claim 1, wherein the notification means is a display device.