JPH09177398A - Id code registration device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To renew an ID code in which the memory of a keyless entry system body is stored from time to time by transmitting a registration signal in succession to a normal signal from a transmitter. SOLUTION: When the operation button 51 of a transmitter 50 is operated, a normal signal is transmitted to a keyless entry system 100. When the button remains pressed for 10 seconds or more, a registration signal composed of a control code for instructing locking and releasing and an ID code registered in a memory 15 is transmitted. When CPU 10 of the 100 judges that a received ID code agrees with the code registered in a memory 14, judging is performed as the signal of the transmitter 50 paired with the body 100, and its instruction is carried out. When the body 100 receives the registration signal, a timer 20 is started. When a second registration signal is received within 30 seconds, CPU 10 enters a registration mode, a conventional ID code received at one time is eliminated, a newly added ID code is registered to the memory 14 as a new ID code.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ID code registration device, for example, an ID code registration device capable of registering a new ID code by operating only a transmitter of a so-called keyless entry system.

[0002]

2. Description of the Related Art At present, a keyless entry system for locking and unlocking a vehicle door by a transmitter without using a key has been put into practical use.

Generally, a keyless entry system is
It is composed of a transmitter for transmitting a radio wave signal, a receiver for receiving the transmitted radio wave signal, and a main body having a receiver.

The transmitter is carried by the owner of the vehicle like a conventional vehicle key, and the main body is attached to the vehicle and locks and unlocks the door of the vehicle according to an instruction of a radio signal.

In such a keyless entry system, an ID code peculiar to each keyless entry system is added to the signal, and the ID code of the signal is compared with the ID code registered on the main body side of the keyless entry system. It is determined whether the transmitted signal is transmitted from a predetermined transmitter, and if the ID codes match, it is determined that the signal was transmitted by the owner of the vehicle, and the signal was added to the signal. Follow the instructions.

Therefore, when the owner of the car loses the transmitter, not only can the vehicle be locked and unlocked by the signal, but also the door of the car is unlocked by another person who obtained the transmitter. It can happen.

Therefore, the keyless entry system, assuming such a case, purchases a new transmitter when the owner of the car loses the transmitter, and the ID code of the lost transmitter registered in the main body Can be rewritten to the ID code of a new transmitter.

This rewriting of the ID code is made possible by rewriting the ID code on the main body side by operating the door switch and the key switch a plurality of times as in the invention disclosed in Japanese Utility Model Laid-Open No. 5-69274. After that, a new ID code is transmitted from the transmitter, and the operation is completed by causing the vehicle to perform a normal operation such as opening and closing the door of the vehicle with a key.

The normal operation is used as a condition for completing the rewriting of the ID code. A person other than the owner of the car rewrites the ID code by another transmitter by complicating the rewriting condition of the ID code. It is intended to prevent such a situation and improve reliability in theft prevention.

[0010]

However, the rewriting of the ID code in such a conventional keyless entry system has a drawback that the ID code cannot be rewritten depending on the state of the vehicle. For example, if locking the door of a car is included in the instruction condition for rewriting the ID code, the ID code must be unlocked if the door switch of the car is broken or if the door is locked. It was very inconvenient because I could not rewrite.

The present invention has been made in view of the above points, and an object thereof is to provide an ID code registration device capable of rewriting an ID code only by a signal from a transmitter.

[0012]

According to a first aspect of the present invention, there is provided an ID code registration device, wherein a transmitter for outputting a signal to which an ID code is added and an ID in the received signal by receiving the signal from the transmitter. An ID code registration device comprising an ID code registration device for registering a code, wherein the transmitter inputs a constant output instruction for outputting the signal, and a constant input of the output instruction from the input device. A registration instruction adding means for adding a registration instruction signal to the signal when the time is longer than the time, the ID code registering means storing the ID code, and the signal from the transmitter. Receiving means for receiving the registration instruction signal and the signal received by the receiving means, the presence / absence of the registration instruction signal added by the registration instruction signal adding means is determined. ID in the signal received by the receiving unit
ID code storage control means for storing the code in the ID code storage means.

According to another aspect of the ID code registration apparatus of the present invention, the ID code comprises a fixed ID code which is always fixed and a variable ID code which is different depending on the transmitter.
The signal received by the receiving means only when the D code storage control means matches the fixed ID code in the fixed ID code storage means with the fixed ID code in the ID code included in the signal received by the receiving means. The variable ID code among the ID codes included in the variable ID code is stored in the variable ID code storage means.

According to another aspect of the ID code registration apparatus of the present invention, the ID code storage control means detects the signal to which the ID code is added at least twice after the detection of the registration signal, and detects the signal at least twice. Of the I signals already stored in the ID code storage means by the first signal,
After erasing the D code, the ID code in the first signal is stored in the storage means, and the ID code in the second signal is further stored in the storage means by the second signal. is there.

In the ID code registration apparatus according to the present invention, the ID code registration control means detects the signal to which the ID code is added at least twice after detecting the registration signal, and the signal is detected at least twice. Of the signals, the variable ID code already stored in the ID code storage means is erased by the first signal, the ID code in the first signal is stored in the storage means, and the second signal is used by the second signal. The variable ID code in the signal is further stored in the storage means.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.
A keyless entry system will be described as an example.

Embodiment 1 FIG. 1 is a block diagram showing the configuration of a keyless entry system to which the ID code registration device of the present invention is applied.

This keyless entry system has an ID
The keyless entry system main body 100 is provided with a transmitter 50 that transmits a radio signal to which a code is added and an antenna 21 that is a receiving means.

The transmitter 50 includes a transmission button 51 which is an input means for outputting a signal, a memory 15 which stores an ID code unique to the transmitter 50, a transmission antenna 22 which transmits a signal to which an ID code is added, It comprises a timer 19 for measuring the time for operating the send button 51.

The send button 51 has a signal for instructing the vehicle to lock and unlock the door, depending on the difference in operation time.
It is possible to transmit two kinds of signals, which are signals for instructing the ID code stored in the memory 15 to be registered in the memory of the keyless entry system body 100, and the operation time of the send button 51 is counted by the timer 19.

The outer appearance of the transmitter 50 has a form as shown in FIG. 2, and has a size that fits in a hand.

On the other hand, the keyless entry system body 1
00 is a detector group 1 for detecting opening / closing and locking / unlocking of the door, a solenoid 18 for locking / unlocking the door,
It comprises a control unit 5 for controlling it. The input interface 8 outputs signals so that the detection signal detected by the detector group 1 can be input to the control unit 5, and the output interface 12 can input an instruction to the solenoid 18 from the control unit 5. Mediation of.

The detector group 1 is for detecting the state of the door. The door switch sensor 2 detects the open / closed state of the door, and the lock sensor 4 detects whether the door is locked or unlocked.

The solenoid 18 locks and unlocks the door, and the output interface 1 from the CPU 10
The door lock is operated by a signal via 2. In addition,
A motor or the like may be used instead of the solenoid 18.

The control unit 5 includes a detector group 1 and a solenoid 18
Which functions as an ID code registration device, controls an antenna, receives an antenna 21, receives a signal, counts the length of the received signal, and stores a unique ID code for each keyless entry system. 14
And a CPU 10 for controlling them.

In particular, the CPU 10 is a main part of the control unit 5, and executes the instruction of the signal received by the antenna 21 based on the detection information detected by the detector group 1.

The procedure of signal transmission / reception performed by the transmitter 50 and the keyless entry system main body 100 described above will be described below.

By a predetermined operation of the transmission button 51 of the transmitter 50, the signal with the ID code stored in the memory 15 is transmitted from the transmission antenna 21. The transmitted signal is received by the antenna 21 of the keyless entry system main body 100 and further recognized by the CPU 10.

The CPU 10 has an input interface 8
The detection information of the door open / closed / locked state detected by the detector group 1 is input through the, and when the received signal is recognized as a signal for instructing the door lock / unlock, the door is locked. If so, an instruction is sent to the solenoid 18 via the output interface 12 to unlock it, and to unlock it if unlocked.

When it is recognized that the received signal is a signal instructing the registration of the ID code, the ID added by the signal
The code is registered in the memory 14.

Here, the structure of the signal output from the transmitter 50 is shown in FIG.

The signal of this embodiment comprises a 4-bit control code 54 and an 8-bit ID code 55. The ID code 55 is stored in the memory 15 of the transmitter 50.
And the memory 14 of the keyless entry system body 100
The same thing is registered in and, and the CPU 10 sends the transmitter 5
The ID code 55 transmitted from 0 is compared with the ID code 55 registered in the ID code storage device 14, and the ID code 55 registered in the ID code storage device 14 and the ID code 55 added to the signal are compared. Only when they match, it is determined that the signal is transmitted from the transmitter 50 forming a pair with the keyless entry system body 100, and the instruction according to the signal is followed.

On the other hand, the control code 54 is the transmitter 5
0 conveys the content of the instruction to be sent to the keyless entry system main body 100, and the content includes, for example, door locking and unlocking, ID code registration, and the like.

Thereafter, a signal obtained by combining the control code 54 for instructing to lock and unlock the door of the automobile and the ID code 55 is a normal signal, and the control code 54 for instructing to register the ID code and the ID code. A signal obtained by combining the two is referred to as a registration signal.

The procedure for registering the ID code 55 in the memory 14 in the keyless entry system of this embodiment will be described below.

FIG. 4 is a diagram for explaining the transmission of the normal signal and the registration signal.

The normal signal 52 is a signal transmitted immediately by operating the send button 51. On the other hand, registration signal 5
3 is the send button 5 as it is after sending the normal signal 52
It is a signal transmitted by pressing 1 for 10 seconds or more. In the present embodiment, the keyless entry system main body 100 receives the registration signal 53 twice within 30 seconds to instruct the CPU 10 to enter the ID code registration mode. Hereinafter, the registration mode in this specification means that the ID code rewrite prevention function is canceled and the memory 14 is placed in a state in which the ID code 55 can be rewritten.

The transmission time of both the normal signal 52 and the registration signal 53 is 0.7 seconds.

Thus, the registration signal 53 is the normal signal 52.
The transmission is not transmitted unless the transmission button 51 is pressed for 10 seconds or more, and the registration signal 53 must be received twice consecutively within 30 seconds immediately after receiving the normal signal 52. The configurations in which the ID code 55 cannot be registered are made in order to reduce the risk that the sender may mistakenly operate the transmitter 50 to register the ID code 55.

That is, the registration signal 53 is not transmitted unless the transmission button 51 is pressed for a relatively long time for the operation of the push button for 10 seconds, so that the sender unintentionally changes the registration signal 53. It reduces the erroneous operation of sending, and even if the erroneous operation causes the registration signal 5
Even if 3 is sent, the ID code 55 is prevented from being registered unless the same erroneous operation is repeated within 30 seconds, and the ID code is not registered or erased due to an operation error. I am doing so.

Further, since the normal signal 52 and the registration signal 53 are transmitted as radio waves, they may be disturbed by noise of other radio waves around the automobile. In the present embodiment, in preparation for such a situation, both the normal signal 52 and the registration signal 53 are transmitted 6 times within the transmission time of 0.7 seconds so that the signal is received by the antenna 21 more reliably. There is.

Next, the specific content of the ID code registration process performed after entering the registration mode will be described with reference to the flowchart shown in FIG.

When the keyless entry system main body 100 receives the first registration signal 53 (S1), the timer 20 automatically starts counting time for 30 seconds (S2).

Within 30 seconds from the start of this timing, the main body 10
When 0 receives the second registration signal (S4), the main body 1
CPU 10 of 00 determines that it has received an instruction to rewrite the ID code 55, and performs registration mode processing (S6).

However, as described above, the normal signal 52 and the registration signal 53 are each transmitted 6 times within the transmission time of 0.7 seconds. Therefore, the keyless entry system body 1
00, by operating the send button 51 once, 0.
There is a possibility that a plurality of signals are received among the registration signals 53 transmitted within 7 seconds and the registration mode is entered.
In the present embodiment, in order to prevent such a situation, the 30-second timer 20 simultaneously measures the first 1 second of 30 seconds separately, and the CPU 10 ignores the registration signal 53 received within this 1 second. (S3).

FIG. 6 is a flowchart for explaining the process of rewriting the ID code 55 in the registration mode process (S6) of the first embodiment described above.

CP instructed to enter registration mode
The U10 rewrites the ID code 55 of the memory 14, and the registration of a new ID code is performed by a signal transmitted from the transmitter 50 after entering the registration mode. This signal may be either the normal signal 52 or the registration signal 53 as long as it is a signal added with an ID code.

The CPU 10 first deletes the conventional ID code stored in the memory 14 so that the signal added with the ID code is transmitted to the keyless entry system main body 100.
When it is input to (S11), it is judged whether or not the received signal is the first one received after entering the registration mode, and (S12) The one received the first time after entering the registration mode. If so, the process immediately deletes the previous ID code registered in the memory 14 (S).
13). After that, the ID code added to the received signal is registered in the memory 14 and used as a new first ID code.

In the present specification, hereinafter, a signal which is input for the first time, erases the conventional ID code, and registers a new ID code is referred to as a first transmission signal.

If the received signal is the one that was input after the previous ID code was erased and newly registered by the first transmission signal (S15), the ID code added to the received signal. Is registered in the memory 14 as it is and set as a new second ID code (S14). In the present specification, a signal for registering a new ID code will be referred to as a second transmission signal hereinafter.

The first transmission signal causes the conventional transmitter 50 to
After the ID code of is deleted and the first ID code is newly registered, a new second ID is generated by the second transmission signal.
If the code is registered, the subroutine of the registration mode process is ended, and the process returns to the start shown in FIG.

In the processing for entering the registration mode of the first embodiment described above, the registration signal is transmitted by pressing and holding the normal signal, so that the transmitter is equipped with the normal signal and the registration signal. Operation is possible by entering the registration mode on the condition that the transmitter can be configured with a single button, the transmitter configuration can be simplified, and the registration signal is received by the main body of the keyless entry system twice within 30 seconds. The possibility of entering the registration mode due to a mistake can be reduced.

The process of rewriting the ID code is the first ID of the signals transmitted after entering the registration mode.
By deleting the previous ID code with the code and registering the new first ID code at the same time, and further registering the ID code of the new second transmitter with the second ID code,
The ID code can be automatically and easily re-registered.

Further, by rewriting the ID code by transmitting and receiving signals only between the transmitter and the main body of the keyless entry system, the registration mode can be entered regardless of the state of the automobile. You can

Second Embodiment Next, a second embodiment of the present invention will be described.

The configuration of the keyless entry system of the second embodiment and the appearance of the transmitter are the same as those shown in FIGS. 1 and 2 in the first embodiment, and therefore the description thereof is omitted.

In the second embodiment, of the 8-bit ID code shown in FIG. 3, for example, 2 bits are used as a rewritable variable ID code 56 as shown in FIG.
Two of the remaining 6 bits are used for the non-rewritable fixed ID code 57.

The variable ID code 56 is an ID code unique to the transmitter 50 as described in the first embodiment, and is stored in the memory 14 of the keyless entry system body 100 when the transmitter 50 is replaced. It is an ID code that can re-register the stored one.

On the other hand, with the fixed ID 57 code, the variable ID code 56 registration processing is continued only when the fixed ID code 57 added to the signal and the fixed ID code 57 registered in the memory 14 match. I permit
The D code is an ID code that is not changed by itself.

That is, the fixed ID code 57 is a verification ID code that functions to prevent a person having the transmitter 50 of the same type from registering the ID code of his / her own transmitter 50 in the automobile. , The fixed ID code 57 of the keyless entry system installed in the vehicle can be known only to the owner of the vehicle, or the transmitter 50 having the same fixed ID code 57 as the lost transmitter 50 is the original transmission. By taking such a method that only the owner of the container 50 can purchase it, the security reliability of the keyless entry system can be improved.

The process for registering the ID code of the keyless entry system of the second embodiment will be described with reference to the flowchart of FIG.

This flowchart shows the process of rewriting the ID code performed after entering the registration mode in the second embodiment. This embodiment also uses the normal signal 5
2 and the registration signal 53 are used to enter the registration mode by the same processing as in the first embodiment. Therefore, in the present embodiment, description up to the process of entering the registration mode is omitted.

When the keyless entry system body 100 receives a signal with an ID code added after entering the registration mode (S21), the fixed ID code 57 of the ID code of this signal is the same as the one registered in the memory 14. (S22).

When the fixed ID code 57 is matched as a result of the collation, it is further judged whether or not the received signal is the first ID code (S23), and if it is the first signal. In this step, the conventional ID code is deleted by this signal (S26), the variable ID code 56 of the signal received after that is registered as a new first variable ID code, and a new second variable ID code 56 is registered. It is registered in the memory 14 (S24).

Also in the present embodiment, a single operation of the send button 51 causes a signal transmitted six times within 0.7 seconds to be received a plurality of times and is erroneously recognized as the second ID code. In order to prevent this, the input of the ID code is ignored for 1 second after the first ID code is received (S27, S28).

In the second embodiment of the present invention described above, a fixed ID code that is not rewritable is provided in addition to the variable ID code that is rewritable, and the fixed ID code of the signal and the ID code storage device. By collating with the fixed ID code registered in, it is possible to prevent the ID code of the automobile from being rewritten by a third party.

[0067]

According to the ID code registration device of the first aspect,
By registering the ID code only by exchanging a signal between the transmitter and the main body, it is possible to register the ID code of the key entry system regardless of the state of the vehicle.

In the ID code registration device according to the second aspect, the variable ID code is registered only when the fixed ID codes match, thereby further improving the security reliability in the key entry system.

The ID code registration apparatus according to the third aspect can reduce the erroneous operation of the ID code registration apparatus by actually rewriting the ID code after detecting the registration instruction signal.

According to another aspect of the present invention, the ID code registration device collates the fixed ID code after detecting the registration instruction signal and actually rewrites the ID code.
It is possible to reduce the erroneous operation of the ID code registration device and further enhance the security reliability in the key entry system.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an ID code registration device of the present invention.

FIG. 2 is an external view of a transmitter of the ID code registration device of the present invention.

FIG. 3 is a diagram illustrating a signal configuration of the ID code registration device according to the first embodiment of this invention.

FIG. 4 is a diagram illustrating signals of the ID code registration device of the present invention.

FIG. 5 is a flowchart illustrating a process of outputting a registration instruction signal of the ID code registration device of the present invention.

FIG. 6 is a flowchart illustrating a process of rewriting the ID code according to the first embodiment of the ID code registration device of the present invention.

FIG. 7 is a diagram illustrating a signal configuration of the ID code registration device according to the second embodiment of this invention.

FIG. 8 is a flowchart illustrating a process of rewriting an ID code according to the second embodiment of the ID code registration device of the present invention.

[Explanation of symbols]

2 ... Door switch sensor, 4 ... Lock sensor, 10, 11 ... CPU, 14, 15 ... Memory, 18 ... Solenoid, 19, 20 ... Timer 21, 22 ... Antenna, 50 ... Transmitter 51 ... Send button, 52 ... Normal Signal, 53 ... Registration signal, 100 ... Keyless entry system body.

Claims (4)

[Claims] 1. A transmitter (50) that outputs a signal to which an ID code is added, and a signal (54, 55) received from the transmitter (50), among the received signals (54, 55). ID code (5
ID consisting of ID code registration device (5) for registering 5)
A code registration device, wherein the transmitter (50) inputs an output instruction for outputting the signal (54, 55), and (51) an output instruction from the input means (51). An ID having a registration instruction adding means (10) for adding a registration instruction signal to the signal when the input is for a predetermined time or more, and the ID code register (5) stores an ID code (55). Code storage means (14), receiving means (10, 21) for receiving the signals (54, 55) from the transmitter (50), and signals (54) received by the receiving means (10, 21). ，
55), the presence or absence of the registration instruction signal added by the registration instruction signal adding means (10) is determined, and when it is determined that the registration instruction signal is present, the receiving means (1
ID code storage control means (10) for storing the ID code (55) in the signal received by the (0, 21) in the ID code storage means (14). . 2. The ID code (55) comprises a fixed ID code (57) which is always fixed and a variable ID code (56) which varies depending on the transmitter (50), and the ID code storage control means (10). ) Is the fixed ID
Only when the fixed ID code (57) of the code storage means (14) and the fixed ID code (57) in the ID code included in the signal received by the receiving means (10, 21) match, the reception Variable ID code (56) in the ID code included in the signal received by the means (10, 21)
Is stored in the variable ID code storage means (14). 3. The ID code storage control means (10)
Detects the signal to which the ID code (55) is added at least twice after detecting the registration instruction signal, and the ID code storage means ( I already stored in 14)
After deleting the D code (55), the ID code (55) in the first signal is stored in the storage means (14), and the ID code (55) in the second signal is generated by the second signal.
The ID code registration device according to claim 1, wherein the ID code is stored in the storage means (14). 4. The ID code storage control means (10)
Is ID at least twice after detecting the registration signal.
The signal to which the code (55) is added is detected, and the ID is detected by the first signal of the at least two times of signals.
After erasing the variable ID code (55) already stored in the code storage means, the ID code (5
The variable ID code (55) in the second signal is stored in the storage means (14) according to the second signal, and the variable ID code (55) is stored in the storage means (14). ID code registration device.