JPH07959B2 - 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 irregularities in the lock, the length and position of the pin or cylinder, or the presence or absence of these, and the mechanical irregularity or the position of the key, or the mechanical presence or absence of these. The combination of information is checked mechanically or mechanically, 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 attempt to open and close electrically 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 conventional device described above, particularly in the electronic key device that opens and closes the electronic lock in a non-contact manner by sending the encryption code for unlocking to the electronic lock using radio waves, light, etc., If the lock mechanism is not released even after performing the operation, why does the operator not release it, that is, the transmitted encryption code does not match the predetermined encryption code, or the encryption code There was a problem that I could not know if it was because the transmission itself was not done properly.

[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 capable of knowing the cause and the like when the lock mechanism is not released.

[Main points of the invention]

In order to achieve the above-mentioned object, the present invention notifies that when a cryptographic code is transmitted to an electronic lock and the transmission of the cryptographic code is not performed properly, and the transmission of the cryptographic code is appropriate. If it is done, the encryption code is suitable,
This is a notification of the inadequacy.

Example of Invention

Hereinafter, an embodiment 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 , LEDs 4a and photodiodes are provided on the side end surface of the display unit 2.
5a is provided. These keys S _1, S _2, S ₃ and equol in the key group 3a (=) key S _4, minus (-)
The key S ₅ and the plus (+) key S ₆ will be described in detail later,
It 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. Further, on both sides of the keyhole 15, a photodiode 16a and an LED 17a are provided so as to be equal to the interval between the LED 4a and the photodiode 5a of the wristwatch. In such a jewelry box 10, an optical signal corresponding to the code code (“0425” in FIG. 2) set by the digital switch 14 is output from the LED 4a of the wristwatch in FIG. 1 and received by the photodiode 16a. When the lock is released or only by a predetermined key (key) in the keyhole 15, the lock mechanism is released. Furthermore, the output result when the above encryption code is output is transmitted by the LED 17a,
It is designed to be received by the photodiode 5a of the wristwatch.

FIG. 3 shows a circuit configuration of the wristwatch body 1 shown in FIG.

In FIG. 3, the ROM 21 is a fixed memory that contains programs and data for controlling the entire system. The address control unit 22 is an address unit of the ROM 21 that measures the flow of the program, and inputs the outputs of the ROM 21, the arithmetic unit 25, and the frequency dividing circuit 27. The RAM 23 stores the data stored in the address specified by the ROM 21 in the arithmetic unit 25.
And a memory which outputs the result processed and processed by the arithmetic unit 25 to the conversion circuit 29 and stores it. 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 or the data output from the receiving circuit 5 based on the instructions of the ROM 21 and the key input unit 28, and outputs the result to the ROM 21.
It is written in the address of the RAM 23 designated by and displayed on the display unit 2. The display unit 2 is the same as that shown in FIG. The 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 seconds to the daddle 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 shown in FIG. ₁ and the key group 3a. .

The conversion circuit 29 converts an encryption code, which will be described later, written in the RAM 23 into a serial electric signal of H (high) and L (low), and sends the serial electric signal to the transmission circuit 4. This transmission circuit 4
Is composed of the lower LED 4a and the transistor 4b shown in the first figure, and the transistor 4b is turned on and off according to the output signal of the conversion circuit 29, and the LED 4a is turned on and off accordingly, so that an optical signal including predetermined data is generated. Is output.

The receiving circuit 5 is a photodiode 5a shown in FIG.
It is composed of an amplifier 5b, a low-pass filter 5c, and the like, and receives a response signal, which will be described later, transmitted from the LED 17a of the jewelry box 10, converts it into an electric signal, and outputs it.

Next, FIG. 4 shows a circuit configuration of the jewelry box 10. Receiver circuit 16
Is composed of the photodiode 16a, the amplifier 16b, the low-pass filter 16c and the like shown in FIG. 2, and receives an optical signal from the LED 4 to convert the optical signal into an electric signal. The conversion circuit 31 converts the output signal of the reception circuit 16 into a parallel digital signal (encryption code).
The coincidence detection circuit 32 compares the cipher code set by the digital switch 14 described above with the cipher code output from the conversion circuit 31, and outputs a coincidence signal when the contents match, If not, a mismatch signal is output. The lock mechanism 33 includes the protrusion 13 and the main body in FIG.
It is composed of an engaging portion inside 11, and when the above coincidence signal is received, the engagement is disengaged and the lock is released.

The coincidence signal or the non-coincidence signal is delayed by the delay circuit 34 and then sent to the conversion circuit 35. Conversion circuit
The reference numeral 35 converts the coincidence signal or the non-coincidence signal into a serial ON / OFF signal and sends it to the transmission circuit 17. Transmission circuit
17 is composed of the LED 17a and the transistor 17b shown in FIG. 2, and uses the output signal of the conversion circuit 35 as a response signal.
It is converted into an optical signal and output. This response signal is received by the receiving circuit 5 of the wristwatch as described above.

Next, FIG. 5 shows the internal structure of the RAM 23 shown in FIG. In the figure, the RAM 23 includes a time register W, a display register X, an item description register Y, an encryption code storage register Z, a pass data storage register H, a pass data setting flag L, an electric key operation mode flag M, and a 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, status display flag V, timer T, U, etc. .

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 description register Y and the encryption code storage register Z are composed of a plurality of registers, and each register stores an item corresponding to each electronic lock and an encryption code set for each item. For example, in FIG. 5, the item is “JEWEL” for the jewelry box 10 as shown in FIG. 2, and the encryption code is “042” corresponding to it.
5 ”is set. Also, home doors, car doors,
In the case of office doors, the item is "DOOR",
"CAR" 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 a symbol known only to the person having the characteristic, and stores the 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, the code outputting mode flag S, and the status display flag V are the above-mentioned display units. The second display mode is the 17th
"1" is set in the pass data input mode, mode selection mode, pass data change mode, item / code change setting mode, item input mode, code output mode, and status display mode as shown in the figure. It is a flag.
The timers T and U are timers that measure time in 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 U is used when determining the presence or absence of the response signal from the jewelry box 10.

The main operation of this embodiment having the above circuit configuration will be described below.

First, in FIG. 6, 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 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, and the time data obtained by this processing, which will be described in detail later. Is stored in the time register W of the RAM 23 shown in FIG.

On the other hand, in the HALT state (a ₁ ), the key S ₁ shown in FIG.
When ~ S ₆ etc. are pressed, key processing is performed (a ₃ ). This key processing is based on the signal output from the key input unit 28 shown in FIG.
This is a process performed by one operation such as AM23.

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

FIG. 7 is a flow chart of the processing when the key S ₁ is pressed, and FIG. 17 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. 7 (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. 17, and when M ≠ 1, that is, the time display mode (see FIG. 17). 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. 17) (b ₃ ). ).

When M = ₁ in step b ₁ , that is, in the electronic key operation mode (mode m _{0 in} FIG. 17), it is determined whether the item / code change setting flag Q is 1 (b ₄ ), If Q = 1, that is, in the item / code change setting mode (mode m _{10 in} FIG. 17), Q is set to 0 and the mode selection flag O is set to 1 (b ₅ ), Switch to the mode selection mode (mode m _{6 in} Fig. 17). 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 pressed is shown in FIG. 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 the path data change mode (mode m _{9 in} FIG. 17), P is set to 0 and the mode selection flag O is set to 1 (c ₃ ), and the mode selection mode m is set. 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 Figure 9. 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. 17), N is set to 0 (d ₃ ) and the mode is switched to the electronic key mode m ₂ (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 .

FIG. 10 shows the processing when the key S ₄ is pressed. 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. 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 (mode m _{7 in} FIG. 17), R is set to 0 and the code output mode flag S is set to 1 Set (e ₃ ) and switch to the code output mode (mode m _{8 in} Fig. 17).

The processing when the key S ₅ is pressed is shown in FIG. When the key S ₅ is pressed, it is determined whether or not M = 1 (f ₁ ) in the same manner as above, and when M = 1, the mode selection flag O
Is determined to be 1 (f ₂ ), and if O = 1, then
That is, in the case of 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, = 0 and O is set to 1 (f ₅ ). Switch to m ₆ .

FIG. 12 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, as shown in FIG. 13, the timing processing (h ₁ ) mode detection processing (h ₂ ) and the display processing ( 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 every second (i ₁ ), if there is a clock signal for a clock, a 1/16 second counter (not shown) in the time register W of the RAM 23 shown in FIG. 5 is displayed. Add 1 (i ₂ ). Then, it is judged whether or not the 1 / 16-second counter has counted 16, that is, whether or not 1 second has elapsed (i ₃ ), and when 1 second has elapsed, the above 1 /
The 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, see if the 10-second counter has counted 6, that is, if 1 minute has elapsed (i ₇ ), 1
If the minutes have elapsed, the 10-second counter is reset, 1 is added to the minute counter (not shown) in the time register W (i ₈ ), and then another timing process is performed (i ₉ ).

The mode detection process (h ₂ ) and the display process (h ₃ ) shown in FIG. 13 are specifically shown in FIGS. 15 and 16.

In FIG. 15, 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. 14 in the display register X and then displaying it on the display unit 2 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). This display example is shown in FIG. 18 (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 ). When 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 ₄
Since it corresponds to this, the path data setting process is performed and L
Is set to 1 (j ₁₄ ). Then, the set path data is displayed (j ₁₃ ).

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). This display example is shown in FIG. 18 (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. 16 (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. 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 4a (k ₈ ). Then, it is judged whether or not the output of the cipher code is completed (k ₉ ), and if it is still being output, the output is displayed by blinking as shown in FIG. 18 (f) (k ₁₀ ). The above code is output as an optical signal from the LED 4a shown in FIG. 3, and the photodiode 16 of the jewelry box 10
received by a. If the digital switch 14 number and the encryption code match, the lock is released.
When the output of the cipher code is completed in step k ₉ , the code output mode flag S is set to 0 and the status display mode flag V is set to 1 (k ₁₁ ) to receive the above-mentioned response signal from the jewelry box. Switch to the reception mode for the operation (k ₁₂ ).

If S ≠ 1 in step k ₇ , it is determined whether the state instruction mode flag V is 1, that is, the above-mentioned reception mode (k ₁₃ ). If V = 1, timer U is started (k ₁₅ ) and then timer U
Is 5, that is, whether 5 seconds have elapsed (k ₁₅ ). If U = 5, the reception mode is terminated,
V is set to 0 and the item input mode flag R is set to 1 (k ₁₆ ).

If U ≠ 5 at step k ₁₅ , ie timer U
5 seconds after the start of, if there is the response signal, whether it is a coincidence signal, that is, the transmitted encryption code and the encryption code set by the digital switch 14 (Fig. 4) are Judge whether they match (k
₁₆ ) If it is a coincidence signal, the coincidence display as shown in FIG. 18 (g) is performed (k ₁₉ ). In the figure, “OPENED” indicating that the lock has been released is displayed. On the other hand, when the mismatch signal is received, the mismatch display as shown in FIG. 18 (h) is displayed (k ₂₀ ).

If there is no response signal in step k _17, timer U
Is larger than 2, that is, 2 seconds have elapsed (k ₂₁ ), and if U> 2, the response signal is returned too late, and it is shown in FIG. 18 (i). Input failure display as shown (k ₂₂ ). On the other hand, when U <2, the output display (k ₁₀ ) is displayed in order to wait until the response signal is received.

If V ≠ 1 in step k ₁₃ , time display mode m
It is a state where the mode has just been switched from ₁ to the electronic key mode m ₂ . In this case, the timer T shown in FIG. 5 timer processing is performed ((k _23), whether or not after two seconds is determined (k _24). If the timer T is before elapse of two seconds ,
The electronic key mode display as shown in FIG. 18 (b) is displayed (k ₂₅ ). 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 _26), to input display of path data (k _27).
An example of this display is shown in FIG. 18 (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. 18 (a). Therefore,
When operating the electronic keys, press key S _{1 in} this state.
Then, the keyboard is switched to the electronic keyboard m _2, and FIG. 18 (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. 18 (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, it switches to the pass data input mode m ₃ again, but if there are three errors, the time display mode m ₁
Will return to. 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. 18 (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 the desired electronic lock, for example, "JEWEL" in the case of a jewelry box is input, the input display is performed as shown in Fig. 18 (e). If the user wants to output the code, it is sufficient to match the LED 4a and the photodiode 5a in FIG. 1 with the photodiode 16a and the LED 17a in FIG. 2 and press the key S ₄ . Then, in the output of the cipher code is switched to the code output in mode m _6, the
A blinking display is performed as shown in FIG. When the output of the encryption code is completed, it waits for the response signal from the LED 17a of the jewelry box 10 to switch to the status display mode m ₁₁ , and depending on the response signal, the match display, the mismatch display or the input display as described above. Is done. When these status displays are completed, the mode is switched to the item input mode m ₇ again. In this way, the transmission result can be displayed each time the encryption code is transmitted, so even if the lock is not released, the cause is whether the encryption code is wrong or the encryption code is You can easily know if the code was sent incorrectly.

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.

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, when the encryption code is not properly transmitted (that is, when the response signal from the electronic lock is not received), the fact is notified by the first notification means. Also, when the encryption code is properly transmitted (that is, when the response signal from the electronic lock is received), the second notification means notifies whether the encryption code is suitable or not, so the lock is not released. Even in such cases, the reason for the cause, such as whether the encryption code is inappropriate or because the encryption code was sent incorrectly, can be easily and accurately known, and its practicality and operability are extremely high. Will be things.

[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 whose lock mechanism is unlocked by the same embodiment, and FIG. 3 is an external view of the embodiment shown in FIG. FIG. 4 is a circuit diagram showing the circuit configuration, FIG. 4 is a circuit diagram showing the circuit configuration of the jewelry box shown in FIG. 2, and FIG. 5 is a diagram showing the internal structure of the RAM shown in FIG. FIG. 16 is a flow chart showing the processing operation of the above embodiment, FIG. 17 is a view showing the change of the display mode due to the key operation in the above embodiment, and FIGS. 18 (a) to (i) are the tables in the above embodiment. It is a figure which shows an example. 4 ... Transmission circuit, 5 ... Reception circuit, 21 ... ROM, 23 ... R
AM, 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,
V: Status display mode flag.

Claims (1)

[Claims] 1. An encryption code storage means for storing an encryption code for unlocking an electronic lock, and an encryption code transmission means for transmitting the encryption code stored in the encryption code storage means to the electronic lock. A response signal from the electronic lock, which is information indicating whether or not the encryption code and the encryption code stored in advance in the electronic lock are notified in response to the transmission of the encryption code by the encryption code transmitting means. Response signal receiving means for receiving, first notifying means for notifying when the response signal receiving means does not receive the response signal, and when the response signal receiving means receives the response signal The electronic key is provided with a second notifying means for notifying information indicating the match / mismatch with the encryption code as a transmission result of the encryption code. Apparatus.