JPS6294677A - Electronic key apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic key device that opens and closes a lock in a non-contact manner using radio waves, light, ultrasonic waves, etc.

[Conventional technology] Conventionally, locking mechanisms using mechanical locks and keys have been used as security devices for doors and gates of buildings and rooms, car doors, doors and lids of safes, desks, lockers, drawers, etc. I have something prepared. This is a combination of mechanical information such as the unevenness inside the lock, the length and position of pins and cylinders, or their presence or absence, and mechanical information such as the unevenness, length and position of the key, or their presence or absence. The locking mechanism is released and the lock is opened only when the combinations of the above are matched mechanically or dynamically.

In addition, recently, in place of the mechanical locking mechanism using a lock and key, an electronically controlled locking device consisting of a so-called electronic key device and an electronic locking device has been developed and used. Such a locking device includes, for example, a remote control device using radio waves or the like in an electronic key device, and by sending a code code from the remote control device to the electronic locking device from a distance, the lock can be released in a non-contact manner. Alternatively, a magnetic stripe card with an encryption code recorded on magnetic tape is used as an electronic key device, and the lock can be unlocked by reading the magnetic stripe card with an electronic lock device. It has been known.

[Problems with conventional technology]

The conventional electronic key device described above only stores one code code corresponding to one electronic lock device, so if it is necessary to open multiple electronic lock devices, a separate electronic key corresponding to each is required. Equipment must be neglected.

Therefore, each time you open an electronic lock, it takes time and effort to select the required electronic key device from among multiple electronic key devices, and sometimes you may make a selection mistake and use the wrong electronic key device. There were times when I ended up.

[Purpose of the invention]

In view of the above conventional problems, the present invention provides an electronic key device with excellent operability, which can be used with a plurality of electronic lock devices, and does not require successive selection of encryption codes. With the goal.

[Summary of the Invention] In order to achieve the above object, the present invention is capable of storing a plurality of cryptographic codes corresponding to each electronic lock device, and is capable of sequentially transmitting these cryptographic codes in a desired order. It is.

[Embodiments of the invention]

Embodiments of the present invention will be described below 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 main body 1 is
It is comprised of a display section 2 consisting of a liquid crystal display or the like, and a key operation section 3 including a group of various keys 3a. Keys S1, S2, S3 and LED 4 are provided on the side end surface of the display section 2, and the keys S1, S2 . S3 and the equal (=) key 84, minus (-) key 85, and plus (+) key 86 in the key group 3a have the function of switching the display mode of the display unit 2, as will be described in detail later.

Next, FIG. 2 is an external perspective view of the jewelry box 1o whose locking mechanism is released by the electronic key function according to this embodiment. The jewelry box 10 is composed of a main body 11 and a lid 12.
2 is attached to the main body 11 by a hinge or the like (not shown) so that it can be opened and closed. Moreover, inside the lid body 12,
A locking protrusion 13 is provided that engages with an engagement portion (not shown) provided inside the main body 11. These are openings that are automatically locked when the lid 12 is closed by the engaging portion and the protruding portion 13 engaging with each other.

It has a mechanism.

Furthermore, a digital switch 14 is attached to the inside of the lid 12 and is electrically connected to the locking mechanism described above, which rotates four dials to match the numbers. When an optical signal corresponding to the encryption code (RO 425J in FIG. 2) set by the digital switch 14 is output from the LED 4 of the wristwatch shown in FIG. The above locking mechanism can only be unlocked using a key.

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

First, the wristwatch main body 1 will be explained. ROM21 is
A fixed memory that contains programs and data that control the entire system.

The address control unit 22 includes an R
Address part of OM21, ROM21, calculation part 25
and the output of the frequency divider circuit 27 are input. RAM2
Reference numeral 3 denotes a memory for outputting the data stored at a designated address in the ROM 21 to the arithmetic unit 25 and the conversion circuit 29, and for inputting and storing the results processed and processed by the arithmetic unit 25. Instruction decoder 24
is a block that decodes the output of the ROM 21 and sends a control signal to each block. The calculation unit 25 is
Based on the instructions from the ROM 21 and the key human power section 28, the RA
Perform calculations using the data in M23 and send the results to RO
The data is written to the address of the RAM 23 specified by M21 and displayed on the display section 2. This display section 2 is the same as that shown in FIG. The oscillator 26 outputs a clock signal with a constant period, and the timing generator 27 divides the frequency of the clock signal to a predetermined frequency and outputs a timing signal for controlling each block in time series. The key input unit 28 is a block that sends signals from the outside for instructing the system to perform various processing operations, and includes keys S1, S2, S3 and a group of keys 3a shown in FIG.

The conversion circuit 29 converts the cryptographic code written in the RAM 2.3, which will be described later, into H (high) and L (low) serial electrical signals. The transistor 30 turns on and off according to the output signal of the conversion circuit 29, and accordingly, the LE
By turning D4 on and off, an optical signal containing predetermined data is output. This LED 4 is the same as that shown in FIG.

Next, the circuit configuration of the jewelry box 10 will be explained. The photodiode 31 receives an optical signal from the LED 4 and turns it on and off, thereby converting the optical signal into an electrical signal. Note that this photodiode 31 is attached to the inner part of the keyhole 15 in FIG. 2, so that it can detect light entering from the outside through the keyhole 15. Furthermore, the photodiode 31 may be replaced by a phototransistor. The amplifier 32 amplifies the electrical signal obtained by the photodiode 31, and the low-pass filter 33 extracts only low frequency components from the output thereof. Conversion circuit 34
converts the output signal of the low-pass filter 33 into a digital signal (cipher code). The coincidence detection circuit 35 compares the encryption code set by the digital switch 14 described above with the (encryption code) output from the conversion circuit 34, and outputs a coincidence signal when the contents match. . The locking mechanism 36 includes the protrusion 13 and the main body 1 in FIG.
1, and when the matching signal is received, the engagement between them is released and the lock is released.

Next, FIG. 4 shows the internal configuration of the RAM 23 mentioned above.

In the figure, the RAM 23 stores a time register W, a display register x 1 item, a register Y1, an encryption code storage register Z, a pass data storage register H, a pass data setting flag, a time display mode flag M1, a pass data setting mode flag N, It consists of an item/code setting mode flag O, a program mode flag P1, an item display mode flag Q, a code sending mode flag R1, counters S, T, U, etc.

The time register W is a register that stores time data such as hours, minutes, seconds, and 1/16 seconds, and the display register X is a register that temporarily stores data to be displayed on the display section 2 described above. Item storage register Y and cipher code storage register Z have register numbers rob, rlJ, r2j, r
It consists of multiple registers with 3J, ...,
Each register stores items corresponding to various locks and an encryption code set for each item. For example, in FIG. 4, a jewelry box 1 as shown in FIG.
5, the item is set to rJEWELJ, and the corresponding encryption code is set to ro 425J. Also,
For house doors, car doors, office doors,
rDOoR', rcARJ, rOFF'
1cEJ, and an encryption code is set for each item. The path data storage register H is
This register stores pass data, that is, data consisting of a secret number or symbol known only to a specific person, and in FIG. 4, bus data ro 011J is stored.

The pass data setting flag is set when a number, that is, a numerical value is input by operating the key operation section 3, when the display mode of the display section 2 is the pass data setting mode as described later. This is a flag that is set to “1”. Time display mode flag M1 Pass data setting mode flag N9 Item/code setting mode flag 0. When the program mode flag P2 item display mode flag Q and code sending mode flag R are set to "1",
The display mode of the display section 2 is the time display mode mI, the pass data setting mode m2, and the item/item mode shown in FIG. 14, respectively.
These flags are used to set code setting mode m3, program mode m4, item display mode m5, and code sending mode m6. The counter S is a counter for specifying a register in which a desired item is stored when programming an item as described later, and for setting the register number assigned to that register. counter T
is a counter that counts 1 each time a desired item and encryption code are programmed, and counter U is
1 each time a new item and code is stored in item storage register Y and code code storage register Z.
It is a counter that counts.

Next, the main operations of this embodiment having the above circuit configuration will be explained below.

First, in Figure 5, HALT shape, gQ
(If there is no key operation indication from the 3rd mouth, timekeeping related processing is performed sequentially every 1/16 seconds (C2).The details of this timekeeping related processing will be described later, but as shown in Figure 3. This process is executed using a timekeeping clock signal output from the frequency dividing circuit 27 every 1/16 seconds, and the time data obtained by this process is stored in the time register W of the RAM 23 shown in FIG.

On the other hand, in the I (ALT state (aI)), when keys 81 to 86, etc. are pressed as shown in FIG. 1, key processing is performed (C3). This is a process performed by the operation of the ROM 21, RAM 23, etc. based on the signal output from the key input section 28 shown in FIG.

The processing and change in display mode when the key S+=56 is operated will be described below.

FIG. 6 is a flowchart of processing when key S1 is pressed, and FIG. 16 shows display changes when each key is operated. However, if the key 81 is pressed, as shown in FIG. 6, it is first determined whether the electronic kit A production mode flag M is 1 (bl). If M=1,
That is, when the display mode is the time display mode ml, the path data setting mode flag N is set to 1 and M is set to O (b2).

If M≠1 in step b1, it is determined whether the path data setting mode flag N is 1 (b3). When N=1, that is, when the path data setting mode is m2, the time display mode flag M is set to 1.
is set and N is set to 0 (b4).

If N≠1 in step b3 above, it is determined whether the item/code setting mode flag O is 1 (
b5). When 0=1, that is, when the item/code setting mode m3 is selected, the item and code inputted by the key input section 28 in FIG. Y and stored in the encryption code storage register Z (b6). Thereafter, 1 is added to the counter U (bl). On the other hand, if O≠1 in step b5, no processing is performed.

FIG. 7 shows the processing when the key 82 is pressed.

When the key S2 is pressed, it is first determined whether the pass data setting mode flag N is 1 (C1).

When N=1, that is, in the case of path data setting mode m2, it is next determined whether the bus data setting flag L is 1, that is, whether there is the above-mentioned number (numerical input) (C2). . When L=1, the above-mentioned number is stored as bus data in the path data storage register H in FIG.
3), or if L≠1, leave it as is and move on to the next item.
The code setting mode flag O is set to 1, and the path data setting mode flag N and counter U are set.

Set both T to 0 (C4).

If N≠1 in step C1 above, determine whether item/code setting mode flag 0 is 1 (C5)
. If 0=1, that is, item/code setting mode m3
If so, N is set to 1 and O is set to 0 at the same time (C6).

If 0≠1 in step C5, it is then determined whether the item display mode flag Q is 1 (cl). Q
If = 1, that is, if item display mode m5,
Set time display mode flag M to 1 and set Q to O.
(cg)

In step C7 above, if Q≠1, it is determined whether or not there is a numeric value input as described above (C9).
3, the bus data storage register H in FIG.
It is determined whether the path data matches the path data stored in (01o).

If they match, set Q to 1 and set M and T.
Set to O (c++).

On the other hand, if there is no set number in step C9, or if the set number does not match the bus data in step C+O, no processing is performed.

FIG. 8 shows the processing when the key 83 is pressed.

In the figure, when the key 83 is pressed, it is first determined whether the time display mode flag M is 1 (dl).

When m=1, that is, when the time display mode is m1, the program mode flag P is set to 1, and the time display mode flag M and counters T and S are set.
Set to O (d2). On the other hand, if m≠1, it is determined whether P=1 (d3), and if P=1, that is, if the program mode is m4, M is set to 1 and P is set to O (d4). Furthermore, if both M and P are not 1,
No processing is performed.

FIG. 9 shows the processing when the key 84 is pressed.

When the key 84 is pressed, the program mode flag P is set to 1.
Determine whether or not (el). If P=1, that is, in program mode m4, for registers Y and Z with register numbers equal to the value of counter T, registers Y and Z with register numbers equal to the value of counter S Write the items and encryption code (e2
). Then, 1 is added to the counter T (e3). next,
Whether or not the value of the counter T has become equal to the value of the counter U, that is, the number of items and encryption codes for which the writing process was performed in step e2, the items and encryption codes stored in step b6 shown in FIG. (e4). T=
In the case of U, set T to O, assuming that all stored items and encryption codes have been written (
e5).

Note that even if the key 84 is pressed when P≠1, that is, when the program mode is not m4, the operation is invalid.

FIG. 10 shows the processing when the key S5 is pressed. When key S5 is pressed, program mode flag P is set to 1.
If P=1, that is, in program mode m4, add 1 to the counter S (f+).
2) On the other hand, if P≠1, no processing is performed. This key S
The value of the counter S set by the operation in step 5 is used to write the items and the encryption code as shown in step e2 of FIG. That is, key 84 and key S5
By manipulating , it is possible to perform programming in which the contents of item storage register Y and cipher code storage register Z are exchanged in a desired order.

FIG. 11 shows the processing when the key S6 is pressed. When the key S6 is pressed, it is determined whether the item display mode flag Q is 1 (g+), and if Q=1, that is, if the item display mode is m5, the code sending flag R
is set to 1 and Q is set to 0 (g2). Then, the cipher code of the cipher code storage register number with the register number equal to the value of the counter T is sent to the conversion circuit 29 shown in FIG. 3 (g3).

The key processing is performed as described above, but in the timekeeping related processing performed at every l/16 second timing, the 12th
As shown in the figure, the timekeeping process h! , mode detection processing h2
, display processing h3 are sequentially performed.

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

Next, FIG. 13 specifically shows the mode detection process h2 and display process h3.

In the figure, it is first determined whether the time display mode flag M is 111), and if M=1, the time register W
Write the time data in display register X (i 2)
, displays the time on the display section 2 (i3). An example of this display is shown in FIG. 15 (al).

If M≠1 in step i+, it is determined whether the bus data setting mode flag N is 1 (i4).

If N=1, input processing is performed when pass data is input from the key input unit 28 described above (i5), and the input pass data is written to display register X (i6).
, and displays it on the display section 2 (i3). An example of the display is shown in FIG. 15(b). In the same figure, the path data is ro 0
It is set to 11J.

If N≠1 in step i4 above, determine whether the item/code setting mode flag O is 1 (17)
. If O=1, input processing is performed when items and encryption codes are input from the key manual section 28 (18). These input items and code are stored in registers Y and Z with register numbers equal to the value of counter U (step b6 in FIG. 6), and then the stored contents are stored in display register X. (19) and display it on the display section 2 (i3). An example of the display is shown in FIG. 15(c). The figure shows the item rJEWELJ and the code r04.
This is the case where 25J is set.

If O≠1 in step 17 above, it is determined whether the program mode P is 1 or not.i + o) If P=1, the item is stored in the item storage register Y with the register number equal to the value of the counter S. Write (ill) the item in display register X and display it on display section 2 (i
3). An example of the display is shown in FIG.
It switches in the order of l, (f), and (gl).

If P≠1 in step i+o above, determine whether the item display mode flag Q is 1.
, in the case of Q=1, the item stored in the item storage register Y with the register number equal to the value of the counter T is written to the display register X (t + 3), and it is displayed on the display section 2 (i3). ).

In step iI2, if Q≠1, that is, if the code sending mode flag R is 1, in this case, it is first determined whether the sending of the encrypted code has been completed (i14). If not completed, the encryption code sent to the conversion circuit 29 in step g3 of FIG. 11 is converted into serial data and sent out as an optical signal by the LED 4 (iI5). While this sending is being carried out, the display unit 2 displays that the encryption code is being sent (i16). This display is performed, for example, by blinking as shown in FIG. 15 (hl).

On the other hand, if the transmission of the encryption code is completed in step 114, add 1 to the counter T (ill),
Then, the item display mode flag Q is set to 1, and the code sending mode flag R is set to O (i + e).

Next, the process returns to step it3, and similar processing is performed based on the value of the counter T incremented by 1 as described above. In this case, the key St shown in FIG. 9 and FIG.
, S5, that is, after the register contents have been replaced, the items will be displayed in the programmed order.

Next, how to operate the above-mentioned keys 81 to S6 and how the display mode changes based on these operations will be explained again based on FIG. 14.

First, in the state of time display mode m1, the time is displayed as shown in FIG. In this state, pass data (for example, rollJ
). At this time, a display as shown in FIG. 15(b) is displayed.

Next, when setting items and encryption codes, press key S2 in pass data setting mode m2. Then, the pass data is stored in the pass data storage register H, and at the same time the mode is switched to the item/code setting mode m31.
”).

At this time, a display as shown in FIG. 15fc) is displayed.

If the key 81 is then pressed, the above-mentioned item and code are stored in the register, and at the same time the mode is switched to the next item code setting mode m32, so that the next item and code can be set.

By alternately operating the key S1 and inputting items and encryption codes in this way, as shown in FIG.
Multiple items and encryption codes can be set.

To program the order in which the cryptographic codes set in this manner are to be transmitted, first return to the time display mode m1, and then press the key S3.

Then, the program mode is switched to m4+, and by first pressing the key 85 a necessary number of times, the item to be set first from among the above items and the encryption code is displayed. At this time, as a result of the process in FIG. 10, the register number of the register in which the item is stored is equal to the value of the counter S, so if the key 84 is pressed next, the process in step e2 in FIG. The desired item and encryption code specified in can be replaced in the first register. At the same time, the program mode is switched to the next program mode m42, so that the second item and the encryption code can be set by operating the key 85 again. By operating the key 85 and the key S6 in the same manner, all items and encryption codes can be replaced in the desired order.

In order to send out the cryptographic code programmed in this way, predetermined pass data is input in the time display mode m1, and then key S2 is pressed.

Here, only when the input pass data matches the pass data stored in the pass data storage register H, the mode is switched to item display mode m5, and the encryption code can be sent. Then, the first programmed item in the program mode m4 is displayed on the display section 2, for example, as shown in FIG. 15(e). If the key S6 is then pressed, the mode is switched to the code sending mode m6, and the encrypted code corresponding to the above-mentioned item is sent out, and while the code is being sent out, a blinking display is displayed as shown in FIG. 15 fhl. When the transmission of the cipher code is completed, the above-mentioned transmission-in-progress display is also completed, and the mode is switched to item display mode m5. At this time, the second programmed item is displayed on the display section 2. In this way, when one cipher code is sent out, the item of the next programmed cipher code is automatically displayed.

Note that the present invention is applicable not only to the above-mentioned wristwatch, but also to pocket-type small calculators and other items that can be worn on the body. Further, in the above embodiments, a jewelry box is shown as the electronic lock device, but the invention is not limited to this at all (for example, the present invention can also be applied to electronic locks built into the doors of houses, offices, cars, etc.).

In addition, the RAM mentioned above is a non-volatile memory, especially an EEP
Preferably, it is a ROM. In this way, even if the battery of a wristwatch or the like runs out, the encryption code will not be lost.

Furthermore, the medium for transmitting the No. 111 code may be radio waves, sound waves, etc., instead of light from an LED.

Further, the item may use the full name, but may also include only the initial letter or only 2 to 3 letters from the initial letter. Items may also be specified sequentially with a single switch.

Furthermore, the pass data is not limited to the numbers mentioned above, but can be stored, for example, by the number of times a predetermined key is pressed, the length of time the key is pressed, a combination of keys for various operations, or a voice recognition function that incorporates a voice recognition function. It may also be one that allows words to be recognized.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to store a plurality of cipher codes and sequentially send out the cipher codes in a desired order, thereby making it possible to handle a plurality of electronic locks with one device. In addition, there is no need to select encryption codes one after another. In particular, since the types of locks that need to be opened on a daily basis and the order in which they are opened are constant, it is desirable that the necessary encryption codes and the order in which they are sent are also constant. This is possible with the present invention, so by setting the desired transmission order first, you can save the trouble of selecting the necessary encryption code, and avoid the possibility of making a selection mistake and sending out the wrong encryption code. You won't have to do anything like that.

[Brief explanation of drawings]

Fig. 1 is an external perspective view showing one embodiment of the present invention, Fig. 2 is an external perspective view of a jewelry box whose locking mechanism is released according to the same embodiment, and Fig. 3 is an external perspective view showing the same embodiment and Fig. 2. FIG. 4 is a diagram showing the internal structure of the RAM shown in FIG. 3; FIGS. 5 to 15 are flow charts showing the processing operations of the same embodiment; FIG. 17 is a diagram showing a change in display mode due to a key operation in the same embodiment, and 17th (al to (fl) are diagrams showing each display example in the same embodiment. 4... LED. 21... ROM. 23...RAM. 29...Conversion circuit, Y...Item storage register, Z...Encryption code storage register, ○...Item/code setting mode flag, P...Program mode flag, Q ...Item/display mode flag, R...Code sending mode flag, S, T, U...Counter. Patent applicant Casio Computer Co., Ltd. 23 RAM f Figure 4 Figure 6 (a) (e) (b) <f) (c)
(9)(d)
(h) Figure 15 Figure 8 S4 Figure 9 Procedural amendment February 1985 λ Day 1, Case indication 1985 Patent side No. 235623 2, Name of invention Electronic key device 3, Make amendment Relationship with the case Patent applicant address 2-6-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Name (
144) Tadashi Kashio, Representative of Casio Computer Co., Ltd.
4 males, 102 proxy vines! ! ! (03) 238-00
31 Address: 6-1-18-6 Kojimachi, Chiyoda-ku, Tokyo.
7. What is the content of the amendment in "4. Brief explanation of the drawings" of the specification to be amended? ,? ili Correct Contents [1] “Figures 5 to 15” on page 27, line 6 of the specification
"Figure" is corrected to "Figures 5 to 13." (2) “Figure 16” on page 27, line 8 of the specification
Figure 4” is corrected. (3) “Section 17 (a)” on page 27, line 10 of the specification
~(f) Correct J to "Figure 15 (al~(h)").

Claims (1)

[Claims] Encrypted code storage means for storing an encrypted code for unlocking an electronic lock, and an order set so that the encrypted codes stored in the encrypted code storage means are transmitted in a desired order. An electronic key device comprising an order setting means for: and an encryption code sending means for sequentially sending out the encryption code in accordance with the order set by the order setting means.