JPH05179847A - Lock system - Google Patents

Abstract

PURPOSE:To prevent illicit use or the like positively by setting two identification codes in an IC-built-in key as a card key, and rewriting the identification code and also the door gate side identification code on the door gate side. CONSTITUTION:When a guest inserts an IC card into a card reader 9 at the time of entering a room, a controller 7 on the door gate side collates a room number and the like. In the case of the collation being discordant, the NG lamp of the card reader 9 is lighted to refuse lock release. In the case of coincidence, a key identification code and a door gate identification code are further collated. In the case of the card 1 being a legally issued unused card, the key identification code is rewritten into a memory 13, and the door gate identification code is rewritten at the same time. After confirming the pull-out of the card 1, an OK lamp provided at the card reader 9 is lighted to release the lock and to lock again after the guest entering the room. At the time of check- out, the guest returns the IC card 1 to the front, and the key identification code of the returned card 1 in the memory 13 is effaced at the front.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock system using a card key mainly used in a guest room door gate of a hotel.

[0002]

2. Description of the Related Art Generally, there is known a lock system used in hotels and the like, which uses a magnetic card as a key.

In this type of system, at the front desk, a magnetic card is written with a room number and an expiration date according to the number of nights of stay, and the key is given to a customer. At the guest room door gate, an unlocking controller incorporates a clock. When the magnetic card key is inserted, the room number and the expiration date recorded on the key are checked to determine whether unlocking is possible or not.

In this system, the magnetic card key is disposable and the customer is free to dispose of it after checkout.

[0005]

However, the conventional lock system using the magnetic card key requires a clock for the lock controller on the door gate side, which increases the size of the device on the door gate side and adjusts the absolute time. There is a problem that is troublesome.

The conventional lock system also has a problem that it is difficult to eliminate the possibility of unauthorized use due to forgery or falsification of the magnetic card.

[0007] Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art, to eliminate the need to have a clock on the controller on the door gate side in the lock system using a card key, and to use the same key. It is an object of the present invention to provide a lock system that can be used any number of times and can surely prevent unauthorized use due to forgery or falsification of a key.

[0008]

In order to achieve the above object, the present invention provides a lock system having a key and a lock device, wherein the key is a key with a built-in IC and stores the first and second identification codes. The lock device has a controller for controlling the release and a card reader for reading / writing data in the first memory in the IC built-in key, and the controller has a third identification code. The second memory for storing the data and the first key of the IC built-in key by the card reader.
When the first identification code read from the memory matches the third identification code in the second memory, the unlocking means for unlocking and the first identification read by the card reader from the first memory of the IC built-in key When the code does not match the third identification code in the second memory, the presence or absence of the second identification code read from the first memory is checked, and if the second identification code exists, the first and third identification codes match. As described above, one or both of the first and third identification codes are rewritten, and the second identification code is erased from the first memory.

[0009]

In the lock system of the present invention, the I key is used as the card key.
The C built-in key is used, and the first and second identification codes are preset in the memory. The lock device permits unlocking when the first identification code read from the IC built-in key and the third identification code preset in the lock device match. If they do not match, it is checked whether or not the second identification code is set in the IC built-in key, and only when it is set, the first identification code and the third identification code are made to match each other thereafter, or both. While rewriting one, I
C Delete the second identification code of the built-in key. According to this, since the second identification code is erased from the IC built-in key that has been used once, when the third identification code in the lock device coincides with the first identification code of the IC built-in key thereafter. Only can be used. Therefore, when the IC built-in key is lost, another new card is created, and different first and second identification codes are set to this and used for the lock device, the third identification in the lock device is performed. Since the code will be rewritten, the lost old IC key will be
It becomes unusable and secure enough security.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the lock system according to the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the lock system is composed of an IC (integrated circuit) card 1 used as a key and a door gate side device 3, and the door gate side device 3 is
Lock 5 and controller 7 for controlling unlocking of lock 5
And reading information from the IC card 1 and the IC card 1
And a card reader 9 for writing information to the card. The card reader 9 is connected to the controller 7 via the communication line 11.
It is connected to the. The IC card 1 is a key with a built-in IC, and in recent years, a key-shaped one has been proposed.

Further, the IC card 1 has a semiconductor memory 13 built-in. As shown in FIG. 2, the memory 13 has two key identification codes KID1 and KID2, a building code and a room number. Remembered

The case where this embodiment is used for a guest room door gate of a hotel will be described below as an example. At least one IC card 1 is prepared for each of the hotel guest rooms, and the room number of the corresponding guest room is provided. And the building code are stored in the memory 13 in advance. Since this room number and building code are fixed and need not be rewritten or erased in principle, they can be stored in the ROM.

On the other hand, KID1 and KID2 should be stored in an electrically programmable ROM so that an arbitrary code can be set and written when, for example, an IC card is issued to a customer at the front. Is desirable.

Different codes are set in KID1 and KID2, respectively. As will be described later, once the IC card 1 is used, the KID 2 is erased by the card reader 9 on the door gate side or at the front.

The controller 7 on the passenger door gate side includes a microprocessor 15 and a memory 17 connected to the microprocessor 15.
As shown in FIG. 3, the memory 17 stores the door gate identification code GID, the building code of the guest room, and the room number. Since the building code and room number are fixed, they can be stored in the ROM. On the other hand, since the GID needs to be rewritten as described later, it is stored in the RAM or the electrically programmable ROM.

The microprocessor 15 uses the information stored in the memory 17 and the information input from the card reader 9 to perform processing for unlock control as shown in FIG.

Referring to FIG. 4, first, it is checked whether the IC card 1 is inserted into the card reader 9 (step S ₁ ), and if it is inserted, the IC card 1 is read by the card reader 9. The information shown in FIG. 2 is received from the card reader 9. Then, first, the building code and the room number from the IC card 1 are collated with the building code and the room number stored in the memory 17 (step S ₂ ,
S ₃ ). In this case, if either of them does not match, the unlocking is refused by lighting the NG lamp provided on the card reader 9 or the lock 5 for several seconds (step S ₄ ).

If the collation results of the building code and the room number are the same, then the KID1 from the card 1 and the memory 1
The GID in 7 is collated (step S ₅ ).

At this time, if the IC card 1 is an unused card that has just been issued from the front,
Usually, KID1 and GID since would not match, the process proceeds to step S _6. In step S ₆ , it is checked whether there is data of KID2. If properly issued unused cards, because KID2 is present, in which case, the process proceeds to step S _7, it is registered in the memory 17 the KID2 as GID. Next, the card reader 9 is instructed to write KID2 as KID1 in the memory 13 of the IC card 1, and KID2 in the memory 13 is then written.
Is erased (steps S ₈ and S ₉ ).

As a result, in the IC card 1, the original KID2 is stored as KID1, and the memory area of KID2 becomes blank.

[0022] After this, IC card 1 checks whether pulled out of the card reader 9 (step S _10), OK lamp provided in the card reader 9 or tablets if unplugged perform unlocking causes few seconds point lamp the ( Step S ₁₁ ,
S ₁₂ ). As a result, the customer opens the door and enters the room.
Then, again locked after a few seconds (step S _13).

As described above, when the newly issued IC card 1 is used for the first time, it goes through steps S _{6 to} S ₉ , but the second and subsequent uses result in the check result of step S ₅ being yes. since, unlocking is made proceeds immediately to step S _10.

At check-out, the customer has an IC card 1
Will be returned to the front desk. IC returned at the front
Check the KID2 of the card 1, unless KID2 is erased, applying the same process as in step S _8, S ₉ described above. Then, the IC card 1 is issued to the next new customer in that state. When the card used by the new customer, the process of FIG. 4, the program jumps from step S ₅ to step S _10, the unlocking is performed without problems.

By the way, if the IC card 1 is lost or I
If C card 1 is not returned after checkout, the front desk performs the following work in order to render the card unusable.

That is, a new IC card 1 is prepared for the guest room, and a code different from that of the previous card is set in KID1 and KID2 of the card. Then, the new card 1 is inserted into the card reader 9 at the door gate.

Then, the controller 7 performs the above-described processing for the IC card 1 just issued, so that the KID 2 of the new card is set as the GID in the memory 17 of the controller 7, and the memory 13 of the new card is set. KID2 is set as KID1 in the
ID2 is deleted.

As a result, only the new card can be used thereafter. Even if you use the old card,
In, the process proceeds from step S ₅ to step S _6, since the check result is NO in step S _6, unlocking is rejected.

[0029]

As described above, according to the present invention,
Use the IC built-in key as the card key, set two ID codes in advance in the IC built-in key, and write the two ID codes of the IC built-in key on the door gate side when it is first used. By replacing it, it is possible to identify whether the new IC built-in key is a built-in key that has been used once, and in accordance with this, the ID code on the door gate side is also rewritten and the IC code is verified by collating the ID code.
Since it is determined whether the built-in key is valid or invalid,
When the built-in key used once is lost and a new built-in IC key is prepared and it is used, the ID code on the door gate side is also built-in. Since the key is rewritten to match the key, the lost old IC built-in key is invalidated thereafter, and sufficient security is ensured.

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of a lock system according to the present invention.

FIG. 2 is a diagram showing information stored in a memory in the IC built-in key of FIG.

FIG. 3 is a diagram showing information stored in a memory in the controller of FIG.

FIG. 4 is a flowchart showing a process for unlock control performed by a microprocessor in the controller of FIG.

[Explanation of symbols]

 1 IC built-in key 3 Door gate side device 5 Lock 7 Controller 9 Card reader 13 Memory 15 Microprocessor 17 Memory

Claims (1)

[Claims] 1. A lock system having a key and a lock device, wherein the key is a key with a built-in IC and has a first memory for storing first and second identification codes, and the lock device is for unlocking. A controller for controlling and a card reader for reading / writing data in the first memory in the IC built-in key, wherein the controller stores a second identification code.
Memory, and unlocking means for unlocking when the first identification code read from the first memory of the IC built-in key by the card reader matches the third identification code in the second memory, Presence or absence of the second identification code read from the first memory when the first identification code read from the first memory of the IC built-in key by the card reader does not match the third identification code in the second memory Is checked, and if the second identification code is present, the first
And the first and third identification codes so that the third and third identification codes match.
A lock system comprising: rewriting one or both of the identification codes, and rewriting means for erasing the second identification code from the first memory.