JPH0666058A - Lock system for hotel guest room - Google Patents

Abstract

PURPOSE:To prevent undue unlocking of the key lock system of a hotel guest room by any third party by changing the code for reference written in a key card in compliance with the situation the guest room is used by a guest. CONSTITUTION:A key use situation code KI, etc., representing the frequency of issues of the applicable card and the situation the guest room is used are written in the memory 202 of a key card 20 for guest. This key card 20 is inserted into a lock device 10 installed at the entrance to the guest room. If the key use situation code KI on the key card 20 is identical to the key use situation code GI inside of the lock device 10, it 10 conducts the process of unlocking. The lock device 10 changes the contents of the key use situation codes KI, GI. In this manner, the key use situation codes KI, GI, etc., are altered from time to time, so that it is difficult for any third party to duplicate the key card 20 for guest.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hotel guest room lock system for electronically locking and unlocking a guest room door of a hotel or the like.

[0002]

2. Description of the Related Art Conventionally, various lock systems using electronic locks and keys have been devised for the purpose of ensuring crime prevention in guest rooms such as hotels.

For example, there is a lock system in which data is recorded on a magnetic tape on a card using a magnetic card (Japanese Patent Laid-Open No. 55-132877). In this lock system, the secret number KS and KD indicating the length of stay are recorded on the key card issued at the front of the hotel. Similarly for the lock, the secret number GS and the number of days remaining G
D is recorded. When a key is inserted into the lock, the lock compares whether it matches the code KS recorded on the key. If they match, further unlock if GD is greater than 0. If you enter the first meeting, the key code KS
Since the contents of GS and GS are different, it is confirmed that KS and GS are in a predetermined relationship, for example, KS = GS + constant, it is determined as a legitimate key, and the lock secret number GS is changed to KS. The number of remaining days GD before the lock is the key stay period K
The guest can enter the room by changing to D, unlocking the lock. Furthermore, in order to manage the number of remaining days GD before the lock, when the time-lapse device provided in the lock measures the time for one day, the GD is automatically reduced by, for example, 1 or the maid cleans once a day. In order to do so, the method of reducing the remaining number of stay days GD by one day when unlocking the room is adopted.

Further, there is a lock system using, for example, a magnetic card and a built-in clock installed in the lock (Japanese Patent Laid-Open No. 6-58242).
2-223435). In this lock system, the key card issued at the front of the hotel
The secret code KS is recorded. The lock side has two codes GS, GC and date data GD and day of the week data GE obtained from the built-in clock, and when the key is inserted into the lock part, the lock part has the code KS recorded in the key as the lock code. GS
And compare to see if they match. If they match, unlock. Although it does not match when entering the first meeting, the operation formula is determined from the date data GD of the lock and the day of the week data GE, and the two lock codes GS and GC are assigned to the variables of the determined formula and the result is calculated. Confirm that the key code matches the secret code KS of the key card. When it is determined that the key card is legitimate, the lock code GS is changed to the secret code KS of the key card, and the lock is unlocked so that the guest can enter the room.

[0005]

In the conventional lock system for hotel guest rooms, the code for verification recorded on the key card does not change from check-in to check-out. In the meantime, if the data is illegally read by some means and the key is duplicated, there is a possibility that the duplicated key may be used to illegally unlock the data. That is, the crime prevention measures are not sufficient in the conventional key lock system for hotel guest rooms. Furthermore, even if there is an illegal unlocking, there is a special record that it does not remain, unless the guest notices something abnormal, there is a disadvantage that the existence of the unauthorized unlocking is not known. There was a dependency.

In the conventional hotel guest room lock system, when updating or reissuing a key, it is necessary to determine the security code of the key to be issued next based on the data of the key issued immediately before. , It was necessary to record the key data. Therefore, the existence of security data is diffused, which is inferior from the viewpoint of crime prevention.

Further, for example, in an example in which a clock is incorporated in the lock, if there is an error between the clock used when issuing a key at the front of the hotel and the clock in the lock of the passenger compartment, There is a difference in the calculation result from what was predicted at the time of issuing the key, and there is a possibility that the legitimate key will be judged as invalid or the illegal key will be judged as legitimate. It required complicated maintenance work such as adjustment of.

[0008]

SUMMARY OF THE INVENTION Therefore, in the key lock system of a hotel guest room, the present invention changes the collating code written in the key in accordance with the usage status of the guest room, thereby making it possible for an unauthorized solution by a third party. It aims to prevent locks and reduce the burden of key management and maintenance work.

[0009]

According to a first aspect of the present invention, there is provided a lock system for a hotel guest room, comprising: a lock device fixed in a hotel guest room; and a guest key for locking and unlocking the lock device. A guest room lock system having a key side storage unit for storing a first usage status code, and the lock device has a lock side for storing a second usage status code. Based on the storage means and the comparison between the first usage status code and the second usage status code, it is determined whether or not to unlock, and when it is determined to unlock, the first usage status And a control means for changing the contents of the code and the second usage status code.

A lock system for a hotel guest room according to a second aspect of the invention comprises a lock device fixed to a guest room of a hotel, a guest key for locking and unlocking the lock device, and a guest key. A guest room key issuing device for issuing, and a guest room lock system having a guest side key storage means for storing a first usage status code, wherein the guest key issuing device comprises: The lock device comprises a setting means for randomly setting the first usage status code,
A lock-side storage unit that stores a second usage status code, and whether or not the usage status of the guest key is the first entry based on the first usage status code, and determines that it is the first entry, and If the first usage status code and the second usage status code do not match, the first usage status code is stored in the lock side storage means, it is determined that the first entry is made, and the first usage When the status code and the second usage status code match, the first usage status code is changed and unlocked, and when it is determined that the first entry is not entered, the first usage status code and the second usage status code And a control means for unlocking by comparing with the usage status code.

A lock system for a hotel guest room according to a third aspect of the present invention is a hotel guest room having a lock device fixed to a hotel guest room and a maid key for locking and unlocking the lock device. In the lock system, the maid key includes a key-side storage unit that stores a first maid security code, and the lock device includes a lock-side storage unit that stores a second maid security code; Based on the maid security code, it is determined whether the usage status of the maid key is the first entry, and if it is the first entry, the first maid security code and the second maid security code The first maid security code and the second maid security code are changed when the first maid security code is changed based on the comparison judgment and it is determined that the first entry is not entered. A judging means for performing error judgment on the basis of the comparison determines the Curie tee codes, characterized by comprising a.

[0012]

In the lock system for the hotel guest room according to the first aspect of the present invention, when the guest (guest) enters the guest room, the guest sets the guest key in the lock device.
Then, the control means of the lock control device compares the first use status code on the key side with the second use status code on the lock control device side. Then, the control means determines whether or not to unlock based on the comparison result. When it is determined that the unlocking is performed, the control unit changes the contents of the first usage status code and the second usage status code. Then, when the guest re-enters the room, unlocking is performed based on the comparison judgment with the first usage status code and the second usage status code whose contents have been changed.

In this manner, the contents of the first and second usage status codes change in response to the guest entering the guest room, that is, in accordance with the usage status of the guest room. Therefore, it becomes difficult for a third party to grasp the first and second usage status codes, and it becomes difficult to copy the guest key. Therefore, it is possible to prevent unauthorized unlocking by a third party. Further, the hotel guest room lock system according to the present invention has an advantage that maintenance work such as time adjustment is not required.

In the lock system for a hotel guest room according to the second aspect of the present invention, the guest key is issued by the guest key issuing device. When the guest (guest) enters the guest room, the guest sets the guest key in the lock device. Then, the control means of the lock control device compares the first use status code on the key side with the second use status code on the lock control device side. Then, the control means determines that it is the first time to enter the room, and if the first usage status code and the second usage status code do not match, the first usage status code is stored in the lock side storage means. . Further, when it is determined that the user has entered the room for the first time, and the first usage status code and the second usage status code match, the first usage status code is changed and unlocked. Further, when it is determined that the room has not been entered for the first time, the unlocking is performed by comparing the first usage status code and the second usage status code.

In this way, the contents of the first and second usage status codes change in response to the guest entering the guest room, that is, in accordance with the usage status of the guest room. Therefore, it becomes difficult for a third party to grasp the first and second usage status codes, and it becomes difficult to copy the guest key. Therefore, it is possible to prevent unauthorized unlocking by a third party. In addition, since the guest key issuing device randomly sets the first usage status code, it is extremely difficult for a third party to grasp the first usage status code, and duplication of the guest key is more effective. Can be prevented. Further, the hotel guest room lock system according to the present invention has an advantage that maintenance work such as time adjustment is not required.

In the lock system for a hotel guest room according to the third aspect of the present invention, the maid key is set in the lock device when the maid enters the guest room. Then, it is determined whether or not it is the maid key, the usage status is checked, and the maid security code of the lock device and the maid key are compared. Based on the usage status of the maid key side, it is determined whether or not it is the first time to enter the room, and the maid security code of the lock device is rewritten to the maid security code of the maid key based on the comparison result of the maid security codes of the lock device and the maid key. Therefore, it is possible to confirm whether or not the guest room has been cleaned by the maid. .

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing a lock 10, a guest key 20, and a maid key 30 according to this embodiment.

The lock device 10 is provided on a door of a hotel guest room or the like, and locks and unlocks the door. The lock control device 10 includes a CPU 101 and a memory 10.
2, the actuator 103, and the like. The CPU 101 has an arithmetic processing unit, an I / O port, a program ROM, and the like therein. The I / O port of the CPU 101 is provided with an actuator 103 for performing mechanical operations of unlocking and locking.
Are connected. The memory 102 is composed of an EEPROM or the like capable of backing up data. The code shown below is written in the memory 102.

The hotel code GH is a code representing a hotel name, and the hotel codes GH of all the lock devices 10 in the same hotel are all the same. Room code GR
Represents the number of each guest room, and a different code is attached to each guest room. The above-mentioned hotel code GH and room code GR are written in the memory 102 in advance. Then, the following security code GS, usage status code GI, maid security code GM, checkout code GO, key update code G
U is a copy of the code received from the guest key 20 or the maid key 30.

The security code GS is a copy of the security code KS received from the guest key 20. Security code K on the guest key 20 side
As will be described later, a different code is attached to S for each guest key 20.

The usage status code GI is a code corresponding to the usage status of the guest room, for example, whether or not the guest room is unused. When the guest room is vacant, the usage code GI is "0", and by unlocking the guest key,
The usage code is updated. Further, the checkout code GO indicates a usable period or the like when being used. Maid security code GM is maid key 3
This is a copy of the maid security code MS received from 0. Maid security code MS described later
Represents the date of the day, so the maid security code MS recorded in the lock control device 10 indicates the date when the communication between the maid key and the lock control device was last performed. The key update code GU is also a copy of the key update code KU received from the guest key 20. When the guest key 20 is issued for the first time, "0" is attached to the key update code KU, and when it is reissued due to loss or the like, "1" is attached.

The guest key 20 is, for example, the same as an IC card, but its form does not matter as long as it is portable. The guest key 20 has a so-called one-chip CPU 201, a non-volatile memory 202, and the like. The CPU 201 performs serial data communication with the lock control device 10 and also reads / writes a predetermined code from / to the memory 202 and collates the code.

Of the codes recorded in the memory 202,
The hotel code KH and the key code KC are written in the guest key 20 in advance. Hotel code K
H is a code similar to the hotel code GH in the lock control device 10 and indicates a hotel name. Key code KC
Is a code indicating the type of the key card, and a code corresponding to the guest key 20 is attached.

The room code KR, security code KS, key usage status code KI, checkout code KO, and key update code KU shown below are written in the memory 202 when the front guest key 20 is issued. is there. The room code KR is attached with a code corresponding to the room number in which the guest intends to stay. The room code KR is the same as the room code GR in the lock control device 10, but an encrypted room number may be used.

The security code KS is randomly determined by using a random number or the like so that the content thereof will not be known to a third party. The key usage code KI is a code that takes into account the number of times the guest has unlocked the door lock based on the date and time when the guest checked in, and the checkout code KO is a code that represents a scheduled checkout date and time. And the key update code KU is, as described above,
When the guest key 20 is issued for the first time after check-in, the key update code KU is "0".
When it is reissued due to reasons such as loss, "
Further, the value of the key update code KU is added and updated every time the guest key is reissued.

The maid key 30 is possessed by a maid who cleans a hotel guest room. The maid key 30 also includes a CPU 301 and a memory 302, and is configured similarly to the guest key 20. Memory 302
A hotel code KH, a key code KC indicating a maid key, a maid security code MS, and a room code MR indicating an area of a guest room where the maid can be unlocked (enterable) are written. The maid security code MS has the date of the day written therein. The hotel code KH is the same code as the hotel code GH in the lock control device 10, and indicates the hotel name.

A hotel guest room lock system having such a configuration will be described with reference to the flow charts of FIGS.

FIG. 3 is a flow chart showing the processing of the lock system of the hotel guest room when the guest enters the guest room. First, the guest performs the check-in process at the front desk, receives the guest key 20 in which the security code KS and the like are recorded, and moves to the front of the guest room where the guest is going to stay. And the guest is the guest key 20
Is inserted into the lock device 10 provided in the passenger compartment (step S301). The lock control device 10 compares KH and GH to determine whether the inserted key is the key of the hotel (step S302). If it is determined that the key is not the hotel key, error processing (step S321) is performed and the process ends. If they match, it is determined whether the key is the guest key 30 (step S303). When it is determined that the key is not the guest key 20 (N in step S303)
O), for example, in the case of the maid key 30, other processing corresponding to the inserted key is executed (step S).
304).

On the other hand, the inserted key is the guest key 20.
If the lock control device 10 determines that it is (step S30
If YES in step 3, various codes recorded in the memory 202 of the guest key 20 are read (step S30).
5). After confirming that the room numbers match (step S306), the authenticity of the key is determined.
If it is the key of another room, error processing is performed (step S3).
21) is executed.

In step S307, it is determined whether the key update code KU matches the GU written in the lock control device 10. If they do not match (NO in step S307), it can be considered that the key has been reissued, and a process for making a key update determination or the like is executed. In step S308, it is confirmed that the key update code KU is larger than the key update code GU of the lock control device. If it is smaller, it is determined that the key is not the latest key, and error processing is performed (step S32).
1) is executed, and if it is larger, update key processing (step S
309) is executed.

On the other hand, if it is determined that the key has not been updated (YES in step S307), then GM
And KO are compared, and it is confirmed that the valid period of the key has not expired (step S310). The maid security code GM in the lock control device 10 represents the date when the communication between the maid key and the lock control device was last performed, generally the date when the user entered the room for cleaning. At this time, the scheduled check-out date and time of the new guest is naturally larger than GM. Then, the usage status written in the lock control device and the key usage status are compared and confirmed (step S311). Use status code GI of lock device is "vacant" by maid key
Has been rewritten to the code “0” indicating that the key usage status code KI of the guest key 20 used for the first time does not match (NO in step S311). Step S312
At, the contents of the usage status code GI are checked again to confirm that it is the first time to enter the room. In the case of entering the room for the first time, the usage status code is "0", and the process of step S314 is executed. If NO, error processing (step S32
Perform 1) and finish.

In step S314, it is determined whether the security code KS of the guest key 20 matches the security code GS (security code of the guest who stayed before) stored in the lock device 10. Since the security code KS is determined by a random number, it is extremely unlikely that the security code KS of the newly issued guest key 20 matches the security code KS of the guest who stayed before. However, there is a possibility that it will not occur,
If the two security codes KS match, there is a possibility that a guest who has stayed before may enter the room illegally. Therefore, when the security code KS of the guest key 20 matches the security code GS (security code of the guest who stayed before) stored in the lock control device 10 (Y in step S314).
In ES, a constant value n (for example, "1") is added to the security code KS (step S31).
5).

Then, the lock control device 10 executes processing such as rewriting the code in the memory 102 in the lock control device 10 (step S316).

In step S316, the guest key 20 changes the value of the key usage code KI by a constant function. For example, a constant value "1" is added (incremented). If the guest is not in the room after the guest key 20 is issued, the value of the key usage code KI is based on the check-in date and time. Therefore, the value of the key usage status code KI after being incremented is “check-in date and time + 1”. The key usage code KI other than 0 indicates that the guest has entered the room. Further, the lock control device 10 has the memory 1 of the lock control device 10.
The key usage status code GI in 02 is rewritten to the key usage status code KI after the increment.

Further, the lock control device 10 stores the checkout code GO in the memory 102 inside the lock control device 10.
And the security code GS is rewritten with the contents of the checkout code KO and the security code KS in the guest key 20 (step S316).

After the processing of step S316 is completed, the lock control device 10 gives predetermined data to the actuator 103, and the actuator 103 unlocks. Therefore, the guest room is ready for entry. In this way, the unlocking process at the first entry is performed.

If the guest has entered the room for the second time or later, the key usage status code KI in the guest key 20 matches the key usage status code GI of the lock control device 10, and the determination result in step S311 is YES. Therefore, the unlocking process is performed based on the processes of steps S317 to S319.

In steps S317 and S318, the lock control device 10 determines that the security code GS and the checkout code GO in the lock control device 10 are the guest key 2
It is determined whether the security code KS and the checkout code KO at 0 match. After the guest goes out, these codes will match unless a third party enters the room illegally. Therefore, when the conditions of steps S317 and S318 are not satisfied, an error message is displayed (step S321). On the other hand, step S317,
If the condition of S318 is satisfied, the next step S3
The processing of 19 is executed.

In step S319, the lock device 10
The usage status code GI of is updated and changed. Then, the changed value of the usage status code GI is copied to the key usage status code KI of the guest key 20. Then, thereafter, the unlocking operation of the lock control device 10 is performed (step S32).
0).

In this way, in the unlocking process for the second and subsequent entrances, the condition judgment shown in steps S317 and S318 is performed, and further, the key use status codes KI and GI are changed for each unlocking. As a result, in the condition determination shown in step S311, a different value is used as a determination criterion every time. Therefore, unauthorized unlocking by a third party can be made more difficult. That is, in addition to the security code KS, the key use status code KI and the checkout code KO, etc., which change depending on the usage status of the guest room, are determined by judging whether or not they match the codes GS, GI, GO in the lock control device 10, and Duplicating the key 20 can be extremely difficult.

FIG. 4 is a flow chart showing the process of the lock system of the hotel guest room when the guest key 20 is lost.

It is assumed that the guest has lost the guest key 20 for some reason. In departments that can issue keys, such as the front desk, the value of the key update code is "1", the security code KS is determined by a newly generated random number, and it remains the same as before unless the checkout code KO or the guest requests change. The key usage code KI uses the value obtained by coding the date and time of reissue, and reissues the guest key 20 and passes it to the guest. The guest key 20 is used as the lock device 1
Insert at 0. In this case, the reissued guest key 2
The key update code KU is 0 and the lock update device 10
Key update code GU "0" of NO is determined in step S307 (FIG. 3) to be NO, and subsequently in step S308 (FIG. 3) to be YES, and in step S401 of FIG.
Move to S402.

In steps S401 and S402, the maid security code GM in the lock control device 10 is
The checkout code KO of the guest key 10 and the key usage status code KI are compared. If both judgments are YES, KU is copied to GU in step S403, processing as a new key, "B" part of FIG. 3 and subsequent steps (steps S314 to S320) are performed, and the lock is unlocked.

In this way, the unlocking process using the guest key 20 after reissuing is performed. Even in such a case, the key usage status codes KI, GI, etc. representing the usage status of the guest room are changed in accordance with the usage status of the guest room. Therefore, it is possible to prevent unauthorized entry using the lost guest key 20.

FIG. 5 is a flowchart showing the unlocking process when the maid enters the guest room in the hotel guest room lock system according to this embodiment.

At the start of work on the morning of the day, the maid inserts the key into the key reader / writer in the maid room and updates the maid security code MS with the hotel check-out time based on the date of the day (flow chart). (Not listed in). Therefore, even if a specific guest room is registered as an unlockable area in the plurality of maid keys 30, the same maid security code MS is obtained. Also, the data used from the clock of the reader / writer is only the date, and the accuracy management with the clock of the front issuing machine is gentle and maintenance is easy.

First, the maid inserts the maid key 30 possessed by the maid into the lock device in the guest room (step S3).
01). The hotel code is checked (step S30).
2: Figure 3), if they match, the key is the guest key 30
Or not (step S303). Since the key code KC of the maid key 30 is different from the key code KC of the guest key 20, it is judged as NO and the process proceeds to the flowchart of FIG. In step S501, the key code KC is collated to determine whether or not the key is a maid key, and when it is determined that the key is not the maid key, a process corresponding to the inserted key type is performed (step S50).
2). On the other hand, when the lock control device 10 determines that it is the maid key 30, the lock control device reads various codes from the maid key 30 (step S503).

In step S504, it is determined whether or not the unlockable room number registered in the maid key 30 includes the guest room.
A predetermined process such as displaying an error message is performed (step S511). When it is determined that the maid key can unlock the guest room (YES in step S504).
S), and proceeds to the next step S505. Then, the lock device 10 has the maid security code MS of the lock device 10.
It is determined whether the maid security code GM is larger than the maid security code GM, that is, whether the unlocking using the maid key 30 is the first on the day. Result of such judgment Y
In the case of ES, the maid security code GM in the lock device 10 is rewritten with the content of the maid security code MS of the maid key 30 (step S50).
6). When it is determined that it is not the first time (step S505)
No), it is determined in step S507 whether the act of unlocking for entering the room for the second time or more, and if the maid security code GM of the lock device 10 and the maid security code of the maid key 30 do not match, the old unlawful. Error determination (step S51)
Execute 1).

When it is determined that the key is a valid maid key, the key update code GU and other lock codes must not be changed during the guest's stay, but after the guest has checked out, the key update code GU, etc., must be promptly issued. It is necessary to change it, invalidate the guest key 20 possessed by the guest who was using the guest room, and make it ready to accept a new guest key. In step S508, the guest checkout code GO recorded in the lock control device 10 and the security code MS of the maid key 30 (when the maid starts work on the morning of the day, insert the key into the key reader / writer in the maid room to update. If it is judged that the guest has checked out by comparing with the maid security code based on the date of writing (step S)
(YES in 508), and in step S509, the usage status code GI and the key update code GU of the lock control device 10 are initialized. When it is determined that the guest is in the stay period (NO in step S508), data rewriting of the lock control device 10 is not performed. After the above processing is completed, the lock is unlocked (step S510), and the maid can enter the room.

As described above, in the hotel guest room lock system according to the present embodiment, the key use status codes KI, GI, etc., change sequentially depending on the use status of the guest room. Therefore, it is extremely difficult for a third party to grasp these codes. Therefore, it is possible to prevent unauthorized unlocking due to duplication of the guest key 20. Further, even when the guest key 20 is lost, the key usage code KI of the reissued key as well as the content of the key update code KU are changed and updated, so unlocking by the lost guest key 20 is not possible. It will be impossible.

Further, in the present embodiment, the maid who cleans the guest room enters the guest room by using the maid key 30. Therefore, for example, the judgment in step S505 is indicated by an output such as a lamp lighting, so that the guest room It is also possible to check whether the cleaning has been completed.

[0051]

As described above, according to the present invention, the contents of the key usage status codes KI, GI, etc. change in response to the guest entering the room (corresponding to the usage status of the guest room). This change is not limited to the lock device, and the code of the guest key also changes. This makes it difficult for a third party to copy the guest key card, so that it is possible to prevent unauthorized unlocking by a third party, and if unauthorized unlocking is performed, it is possible to By making it impossible to unlock using the key, it is possible to record and discover unauthorized unlocking. Furthermore, according to the present invention, the guest key and various codes recorded in the lock device do not need to be recorded on the issuing machine side, so that the effect of preventing unauthorized discovery of unlocking means is further enhanced. Become.

Further, in the lock system of the hotel guest room according to the present invention, the device requiring time management is limited to the issuing machine placed at the front desk, and the reader / writer used at the beginning of work placed in the maid room does not manage the date. If possible, the time data may be a constant value, and since the lock device in the passenger room does not require a clock, there is also an advantage that maintenance work such as time adjustment can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a lock system for a hotel guest room according to the present invention.

FIG. 2 is a block diagram showing a lock device, a guest key, and a maid key in the lock system of the hotel guest room according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a process when a guest enters a guest room in the hotel guest room lock system according to the embodiment of the present invention.

FIG. 4 is a flowchart showing a process when a guest key is lost in the hotel guest room lock system according to the embodiment of the present invention.

FIG. 5 is a flowchart showing an unlocking process when a maid enters a guest room in a hotel guest room lock system according to an embodiment of the present invention.

[Explanation of symbols]

 10 lock device 20 guest key card (guest key) 101 CPU (control means) 102 memory (lock side storage means) 202 memory (key side storage means) KI key usage status code (first usage status code) GI usage Status code (second usage code) GU key update code (second usage code)

Claims (3)

[Claims] 1. A lock device fixed to a guest room of a hotel,
A lock system for a hotel guest room, comprising: a guest key for locking and unlocking the lock device, wherein the guest key includes a key-side storage means for storing a first usage status code, Determines whether or not to unlock based on the comparison between the first usage status code and the second usage status code and the lock-side storage means that stores the second usage status code. Control means for changing the contents of the first usage status code and the second usage status code when it is determined to perform;
The lock system of the hotel guest room characterized by having. 2. A lock device fixed to a guest room of a hotel,
A lock system for a hotel guest room, comprising: a guest key for locking and unlocking this lock device; and a guest key issuing device for issuing this guest key, wherein the guest key is the first usage state. The guest key issuing device includes a setting device that randomly sets the first usage status code, and the lock device stores a second usage status code. Based on the lock storage means and the first usage status code, it is determined whether or not the usage status of the guest key is the first entry, it is determined that it is the first entry, and the first usage status code When the second usage status code does not match, the first usage status code is stored in the lock storage unit, it is determined that the room is the first entry, and the first usage status code and the second usage status are If the code matches The control means for unlocking by changing the usage status code of and unlocking, and comparing the first usage status code and the second usage status code when it is judged that it is not the first time entering the room. The lock system of the hotel guest room, which is equipped with. 3. A lock device fixed to a guest room of a hotel,
A lock system for a hotel guest room, comprising a maid key for locking and unlocking the lock device, wherein the maid key includes a key-side storage means for storing a first maid security code. Based on the lock-side storage means for storing the second maid security code, and based on the first maid security code, it is determined whether or not the usage status of the maid key is the first entry, and it is determined that it is the first entry. In this case, the first maid security code is changed based on the comparison judgment of the first maid security code and the second maid security code. A judging means for judging an error based on a comparison judgment with the second maid security code;
The lock system of the hotel guest room characterized by having.