JPH0249878A - Magnetic card key and lock system - Google Patents

Abstract

PURPOSE:To make a card on hand usable as a key by installing a setting means which stores a code of the card in a memory as an unlock code when a written magnetic card is loaded by a card reader plural times. CONSTITUTION:In the state that writing to an unlock code memory 4 has been allowed, if a magnetic card intended for a card key is read by a card reader 1 and stored in a first auxiliary memory 2, a central processing unit 7 compares contents A of the memory 2 with contents D of the memory 4. Next, since Anot equal to D is the case, the CPU 7 compares the contents A with contents B of a second auxiliary memory 3, and if A=D is the case, it transfers the contents A to the memory 4, but holding time of the memory 3 is shorter, so that it transfers the contents A to the memory 3 and it is on standby. When the same card is reloaded by the reader 1 within a given period of time after transference, the contents A are held by the memory 2 so that it comes to A=B. When the CPU 7 further transfers the contents A to the memory 4, a card code is stored in the memory 4 as an unlock code.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a magnetic card key lock system that unlocks when the code on the magnetic card matches a code stored in memory in advance. .

[Conventional technology]

The Keyrotsuta system using such magnetic cards is
Its use is rapidly expanding in locker rooms of hotels, general households, and various leisure facilities such as athletic clubs. Conventional magnetic card key lock systems are generally used, for example, in the case of hotels, where a different encryption code is set in the memory of the electronic lock installed on the door of each guest room so that it can be updated. First, a card issuing machine installed at the front desk or the like issues a magnetic card with the encrypted code of the guest room assigned to each guest written on it. The customer thus uses the magnetic card issued at the front desk as a key.

In other words, when the magnetic card issued at the front desk is inserted into the card league, the electronic lock installed on the door of each guest room reads the code code of the magnetic card and locks the code set in memory in advance. It compares it with the encrypted code, and only when the two match does it determine that the holder of the magnetic card is a legitimate customer and performs an unlocking operation. These cryptographic codes are typically updated each time a customer checks out.

[Problem to be solved by the invention]

However, the conventional magnetic card key/lock system described above can only use magnetic cards that are individually issued to each customer by a card issuing machine at each hotel, athletic club, etc. A card issuing machine must be installed. Therefore, it requires manpower, expense, and effort to operate it, and even if issued cards are collected and reused, a large number of blank cards with no written information are required in case of damage, loss, or impairment due to customers taking them home. There was a problem in that it had to be kept in stock, which required expense and management effort.

This invention was made in view of the above-mentioned circumstances, and its purpose is to record information such as bank cash cards, credit cards, etc., regardless of the magnetic encoding standards written in accordance with JIS, ISO, ASCII, etc. To provide a magnetic card key lock system in which any written magnetic card in hand can be used as a key.

[Means to solve the problem]

To achieve the above object, the present invention compares the written magnetic card code read by the card league with the unlock code set in the unlock code memory, and activates the unlock circuit when the two match. In the magnetic card key lock system, when writing of the unlock code memory is permitted under a predetermined condition, the same written magnetic card is loaded into the card reader a predetermined number of times at intervals within a predetermined time. The present invention is provided with an unlock code setting means for storing the code of the written magnetic card as an unlock code in the unlock code memory.

〔Example〕

An embodiment of the magnetic card key/lock system of the present invention will be described below with reference to the drawings.

The magnetic card key lock system of this embodiment has a first
As shown in the figure, a card reader 1 that reads a magnetic card
, a first auxiliary memory 2 that stores the code read by the card reader 1, a second auxiliary memory 3, an unlock code memory 4 that stores the unlock code, and an unlock code memory 4 that stores the contents of the first auxiliary memory 2. a display 5 that displays what has been written to the ROM, a microprocessor (CPU) 7 that performs signal processing and control according to a predetermined program stored in a ROM (read only memory) 6;
It is composed of an unlock circuit 8 and the like that performs an unlock operation in response to an unlock command from the PU 7.

In this embodiment, the stored contents of the first auxiliary memory 2, second auxiliary memory 3, and unlock code memory 4 are represented by A, B, and D, respectively.

To explain the operation of the magnetic card key/lock system of this embodiment, each time a written magnetic card such as a credit card is loaded into the card reader 1, the CPU 7 inputs the contents of the first auxiliary memory 2 and the unlock code memory 4. (unlock code) and issues an unlock command to the unlock circuit 8 only when A=D.
In order to do this, users of rooms, lockers, safes, etc. where this magnetic card key/lock system is installed must unload the written magnetic card, such as a credit card or cashini card, that they wish to use as a card key. It is necessary to set the unlock code in the lock code memory 4 in advance.

In this embodiment, such unlock code setting is performed by the CPU 7 executing a program as shown in the flowchart shown in FIG. be exposed.

Now, the CPU 7 is allowed to write into the unlock code memory 4 under a predetermined condition, such as having the card reader 1 read a magnetic card on which a predetermined command code has been written (see FIG. 2). In step 20) of the flowchart, when the magnetic card to be set as a card key is read by the card reader 1 and stored in the first auxiliary memory 2 (step 21), the CPU 7
compares the contents A of the first auxiliary memory 2 and the contents of the unlock code memory 2 (step 22). in this case,
Since A, /=D, the CPU 7 then compares the content A of the first auxiliary memory 2 and the content B of the second auxiliary memory 3 (
Step 23). As a result of this comparison, if A=B, then C
The PU 7 transfers A to the unlock code memory 4, but since the second auxiliary memory 3 retains its contents for only 8 seconds (of course, this memory retention time can be set to an appropriate length other than 8 seconds), When this magnetic card is first read, A≠B, and the CPU 7 transfers the content A of the first auxiliary memory 2 to the second auxiliary memory 3 (step 24) and waits.

If the same magnetic card is loaded into the card reader 1 again within 8 seconds after the content A of the first auxiliary memory 2, that is, the code of the magnetic card, is transferred to the second auxiliary memory 3, then C
The PU 7 executes step 22, and since it is still Af-D at this stage, it repeats step 23. Then, since the content A of the first auxiliary memory 2 that was previously transferred is held in the second auxiliary memory 3, A=B, and the CPU 7 transfers the content A of the first auxiliary memory 2 to the unlock code memory 4. (Step 25). As a result, the code of the magnetic card that is desired to be used as a card key is set as an unlock code in the unlock code memory 4, and the CPU 7 activates the display 5 (for example, a green light emitting diode) to indicate this.

In step 24 above, the content A of the first auxiliary memory 2 is
If the same magnetic card is not loaded into the card reader l within 8 seconds after being transferred to the auxiliary memory 3, the second
Since the contents of the auxiliary memory 3 are canceled, the code of the magnetic card must be stored in the first auxiliary memory 2 and the card reading operation must be repeated to transfer it to the second auxiliary memory 3.

In this way, once the code of the written magnetic card desired to be used as a card key is set in the unlock code memory 4, the user can know this by operating the display 5.

In this embodiment, the unlock code memory 4 has six storage locations that can be identified by addresses so that up to six different codes can be stored as unlock codes, and the first code is the unlock code. Within 20 seconds after being set in code memory 4 (of course 2
0 seconds), load another magnetic card with a different code written into the card reader 1, and repeat the procedure (twice in each case) into the card reader 1 until the display 5 is activated. ), during this time the CPU
7 repeatedly executes the program shown in the flowchart of FIG. 2 described above, and causes the code of the card to be also set in the unlock memory 4 as an unlock code.

Similarly, by initiating the unlock code setting operation for the next card within 20 seconds after the previous card's code is set in the unlock memory 4, up to 6 written magnetic cards with different codes can be unlocked. Each card code can be set as an unlock code. This is to allow up to six people in the same room to use credit cards, etc. held by each person as a card key for a duplicate key.Of course, the maximum number of cards that can be set for a duplicate key is limited to the unlock code memory. can be arbitrarily selected depending on the number of storage locations.

When the next card is not loaded into card reader 1 within 20 seconds after the code of any magnetic card is set in unlock code memory 4, or when 6 codes are set in unlock code memory 4 If so, C
The PU 7 will not be unlocked even if a magnetic card is subsequently inserted into the card reader 1 unless a special magnetic card is loaded into the card reader 1 to allow writing to the unlock code memory 4 described above. Code writing to the code memory 4 is not allowed.

As mentioned above, if one or more unlock codes are set in the unlock code memory 4, the CPU 7
Then, when a magnetic card with any of these unlock codes is loaded into card reader 1, the second
Since A=D in step 22 of the flowchart shown in the figure, an unlock command is issued to the unlock circuit 8 to perform an unlocking operation (step 2B). In the unlock code setting described above, as soon as the content A of the first auxiliary memory 2 is transferred to the unlock code memory 4, an unlock command is issued as shown by the broken line in FIG. Also good.

Further, the minimum number of times the magnetic card is loaded into the card reader 1 for setting the unlock code is not limited to two times as in the above embodiment, but may be three or more times. To make the number of loads three times, for example, in addition to the first and second auxiliary memories 2.3 of the above embodiment, another auxiliary memory (content C) is added, and the CPU 7 is configured as shown in the flow chart shown in FIG. All you have to do is make it perform the following actions.

Furthermore, as mentioned above (if the door is opened even once within a predetermined time after the unlock code is set, the code of the magnetic card used to unlock the door will be officially retained as the unlock code, If the door is not opened even once within the time, the set code will be canceled and the initial state, that is, the unlock code memory 4 is allowed to be written, and the code of the new written magnetic card will be changed. It may be possible to return to a state where it can be set as an unlock code.

〔Effect of the invention〕

As explained above, in the magnetic card key/lock system of the present invention, when the writing of the unlock code memory is permitted under a predetermined condition, the same written magnetic card is inserted into the card a predetermined number of times at intervals within a predetermined time. Equipped with an unlock code setting means that stores the code of the written magnetic card as an unlock code in the unlock code memory by loading it into the reader, so you can use any code you have regardless of the type of encoding standard. A pre-written magnetic card can be used as a card key, and there is no need to install a special card issuing machine or stock a large amount of blank magnetic cards in locker rooms, safes, etc. of various leisure facilities such as hotels and athletic clubs. This not only significantly reduces expenses, personnel, and effort, but also allows users to use their cash cards, credit cards, etc. as keys.
Extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the magnetic card key/lock system of the present invention, FIG. 2 is a flowchart for explaining the operation of the above embodiment, and FIG. 3 is a magnetic card key/lock system of the present invention. It is a flowchart for explaining the operation of another embodiment of the key lock system. 1... Card reader, 2... First auxiliary memory, 3... Second auxiliary memory, 4... Unlock code memory, 5... Display, 7...・Microprocessor (CPU), 8...
unlock circuit. Figure 1 Figure 3 Figure 2

Claims (3)

[Claims] (1) A magnetic card key that compares the written magnetic card code read by a card reader with the unlock code set in the unlock code memory, and activates the unlock circuit when the two match. In the lock system, when writing of the unlock code memory is permitted under a predetermined condition, the same written magnetic card is loaded into the card reader a predetermined number of times at intervals within a predetermined time, so that the written magnetic card is A magnetic card key characterized by comprising an unlock code setting means for storing the code as an unlock code in the unlock code memory.
lock system. (2) The unlock code setting means sets the code of another written magnetic card that is similarly loaded into the card reader within a predetermined time after the code of one magnetic card is stored in the unlock code memory. By allowing codes to be written to the unlock code memory as unlock codes, it is now possible to set all different codes of a predetermined number of magnetic cards as unlock codes in the unlock code memory. The magnetic card key lock system according to claim 1. (3) The unlock code setting means includes: a first auxiliary storage unit that stores the code each time a written magnetic card is loaded into a card reader; a second auxiliary storage unit; and a second auxiliary storage unit; When writing is permitted to the memory, each time a written magnetic card is loaded into the card reader, the contents of the first auxiliary storage section and the contents of the unlock code memory are compared, and if the two are different. If so, the contents of the first auxiliary storage section and the contents of the second auxiliary storage section are compared, and if they match, the contents are stored as an unlock code in the unlock code memory, and if they are different, the contents are stored as an unlock code. , the contents of the first auxiliary storage section are written to the second auxiliary storage section and held for the predetermined time, and when the same written magnetic card is loaded into the card reader again within this predetermined time, the contents of the first auxiliary storage section and the second auxiliary storage section are stored. When the contents of the two auxiliary storage sections match each other,
a microprocessor for storing the contents as an unlock code in the unlock code memory; and a display means for displaying completion of setting the unlock code when the contents of the first auxiliary storage section are stored in the unlock code memory. The magnetic card key lock system according to claim 1 or 2, characterized in that it is comprised of;