JP3312405B2 - Keyless entry device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a keyless entry device for opening and closing a lock without directly touching the key.

[0002]

2. Description of the Related Art Conventionally, a keyless entry system capable of registering, adding, and rewriting a plurality of ID codes has been implemented, particularly in automobiles. This means that the transmitter is built into the car key or key ring, and the door can be unlocked or locked by remote control by pressing the transmitter switch without the user inserting the key into the door lock. is there. Usually, since the ID code requires confidentiality, the ID code cannot be displayed or confirmed. Also, when registering the ID code, the operation is often a little complicated so that the operation cannot be performed by a simple operation. In practice, the transmitter corresponding to the key may change from time to time due to loss or the like. Reproducing the ID code of the lost transmitter is not preferable for preventing theft of the vehicle. Therefore, a transmitter having a new ID code which does not exist so far is supplied, and the new ID code is registered in the receiver to cope with changes and additions. At that time, some measures have been proposed to ensure the registration (for example, Japanese Patent Application Laid-Open No. 1-192974).

[0003]

However, in the conventional apparatus, it is useless to provide a display portion for a small number of registered ID codes, and there is also a security implication. There is no means for confirming the existence of the ID code. Whether the registered ID code is correctly registered can be confirmed by actually transmitting the ID code and confirming whether the lock and unlock can be performed correctly. However, there is no means for confirming whether or not the ID code of the lost transmitter has been erased, or for confirming that a third party has registered another ID code without permission. Therefore, there was one aspect that security was uneasy because the existence of an unnecessary ID code and the inability to directly confirm the intervention of a third party. As described above, when a user uses a plurality of ID codes, the system causes some inconvenience, and there is a problem that there is no means for solving this.

[0004]

According to a first aspect of the present invention, there is provided a communication apparatus comprising: a plurality of transmitters each having an ID code and transmitting the ID code as a signal; A keyless entry device having a receiver for receiving a signal transmitted by the transmitter and controlling a door lock based on a signal transmitted from the transmitter,
In the receiver, a means for storing ID codes of a plurality of transmitters in a memory, and in the case of a first specific operation by a combination of operation of a plurality of switches connected to the keyless entry device, an ID code from the transmitter is used. to the memory
Hand stage to register instead writing, the first under a different second specific operation to the specific operation, the actuator or buzzer or lamp, before being registered in the memory
Means for notifying the number of the ID codes from the receiver. The invention according to claim 2 is
A third specific operation different from the first and second specific operations
Under the work, the ID code from the transmitter is stored in the memory
And a means for additionally registering the key . According to a third aspect of the present invention, the keyless entry device is a vehicle-mounted keyless entry device that controls locking of an automobile door, and the second specific operation includes an on / off operation of an ignition switch of the automobile. It is characterized by. According to a fourth aspect of the present invention, the ID is determined in accordance with the number of times of turning on / off an ignition switch of the vehicle.
Additional registration of the code in the memory, or rewriting registration in the memory, or the ID already registered
It is characterized in that one of the confirmations of the number of codes is selected.

[0005]

Operation and Effect of the Invention According to the second specific operation, I
The mode becomes a mode in which the registration status of the D code is notified from the receiver . As a result, the registration status of the ID code is notified to the user by the actuator, the buzzer, or the lamp. Therefore , the user can grasp the registration status of the ID code.

[0006]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to specific embodiments. FIG. 1 is a block diagram of a keyless entry device of an automobile according to an embodiment of the present invention. The transmitter 1
A small transmitter and an antenna are incorporated in a key or a key ring of an ordinary automobile, and a unique ID code is modulated and transmitted by radio waves or light. Receiver 2
Is provided with a receiving section 3 for receiving a signal from the transmitter 1 via an antenna or an optical sensor, and a demodulating section 4 for demodulating the signal and returning it to an ID code, and a memory section 5 for storing an ID code of each transmitter. , A microprocessor unit (hereinafter referred to as M) for determining a signal or instructing other control.
6, a control unit 14 for outputting a control signal from the MPU 6 to each device, an input unit 11 for detecting the state of the vehicle and informing the MPU 6, and a key presence detection switch 7 connected to the input unit, an ignition The detection switch 8, the door open / close detection switch 9, the door lock detection switch 10, and the door lock motor 1
2, and a buzzer 13 for warning is connected to the control unit 14. It should be noted that components such as a power supply that are not relevant to the present invention are omitted.

In a normal operation, when a user approaches a car, for example, the transmitter 1 sends a unique I
The D code is emitted as a signal in the form of an electromagnetic wave or light, and is received by the receiver 3 of the receiver 2. The signal is demodulated by the demodulation unit 4 into an ID code,
Is compared with the ID code stored in the MPU 6. As a result, only when the codes match, the control unit 14
Door lock motor 1 which is an actuator by the output of
2 and the buzzer 13 are driven to unlock or unlock. The MPU 6 responds to each operation by judging each situation by software based on the state of each detection switch 7 to 10.

[0009] In addition, when the user wants to additionally register an ID code, rewrite the ID code, or wants to know the number of ID codes, the user performs a predetermined operation.
The treatment becomes possible. That is, each of the detection switches 7 to 10
Only when the combination signal from the MPU 6 matches the combination signal preset in the MPU 6, the ID code addition mode, the rewrite mode, and the ID code number response mode are set. By performing an operation of selecting these modes, New ID
The code can be registered or rewritten, and the number of ID codes stored in the memory unit 5 is notified to the user by the number of times the buzzer 13 sounds.

An example of software for controlling is shown in a flowchart of FIG. In the normal operation of locking or unlocking, all the states and combinations of the various detection switches 7 to 10 are determined in step 202, and all the processing is returned to the normal operation routine. Here, the user adds an ID code,
When a predetermined operation is performed on each of the detection switches 7 to 10 in order to know the rewriting or the registration state, it is determined in step 202 that the request is a mode request related to an ID code. The process enters a mode selection step 204 for selecting a mode for rewriting or a mode for responding to the number of codes. Then, the user performs the operation of turning on and off the ignition (IG) a predetermined number of times, so that the mode is assigned to each mode in the mode determination step 206. Here, by performing the IG operation five times, the response mode 220 of the number of registered ID codes is set, and
The number of D codes is notified by the number of times the buzzer 13 sounds, and then the routine returns to the normal routine 200. If continued
If it is set to enter the code addition / rewrite mode, the process may return to the mode selection 204 without returning to the normal routine 200. Even in that case, it is possible to return to the normal routine 200 without doing anything in the mode determination 206. Here, the ID code addition mode 208 and the rewrite mode 21
For mode 4, each mode is entered by performing the IG operation once and twice, respectively. This program is the same as that of the conventional system together with the normal operation routine. Then, after confirmation, the process returns to the normal operation routine.

As a means for informing the user, any equipment that can be recognized by the user, such as existing actuators and lamps in the vehicle, can be used. For example, if there is no buzzer 13, the door lock motor 12 may be operated, or an oil lamp or the like may blink. Therefore, there is no need to separately install a new display device for this notification, and for vehicles that already have a keyless entry device that can register multiple ID codes, the problem can be solved simply by changing the software. Have the advantages that can be. In addition, the operation procedure for entering the registration ID code number response mode 220 is not so simple, and is not so complicated. Good.

The keyless entry device can be used not only for a vehicle but also for an entrance of any equipment. In that case, the detection switches 7 to 10 and the buzzer 1
The only difference is that the installation status of the third class is different from that of the car.

By this notification of the present invention, the user can register, delete, and rewrite the ID code without any problem, and can use the ID code without any problem in security.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart of an operation mode constituting a feature of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Transmitter 2 Receiver 7 Key detection switch 8 Ignition (IG) detection switch 9 Door open / close detection switch 10 Door lock detection switch 202 ID code mode request determination step 204 Mode selection (ignition operation) step 206 Mode determination step 208 to 212 Step group of ID code addition mode 214 to 218 Step group of ID code rewriting mode 220 to 222 Step group of registered ID code number response mode

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E05B 49/00-49/04 E05B 65/12-65/42 B60R 25/00-25/10

Claims (4)

(57) [Claims] 1. A transmitter comprising: a plurality of transmitters each having an ID code and transmitting the ID code as a signal; and a receiver receiving a signal transmitted by the transmitter. A keyless entry device that controls a door lock based on a transmitted signal, wherein the receiver registers ID codes of a plurality of the transmitters in a memory, and a plurality of switches connected to the keyless entry device. If the first specific operation by the combination of the operation, to register instead write the ID code from the transmitter to the memory
And hand stage, the first is different from the specific operation, under the second specific operation, the actuator or buzzer or a lamp, before
Means for notifying the number of the ID codes registered in the memory from the receiver. 2. The method according to claim 1, wherein the first and second specific operations are different.
Under the third specified operation, the ID code from the transmitter
2. The keyless entry device according to claim 1 , further comprising means for additionally registering a password in the memory . 3. The keyless entry device is a vehicle-mounted keyless entry device that controls locking of an automobile door, and the second specific operation includes an on / off operation of an ignition switch of the automobile. The keyless entry device according to claim 1 or 2, wherein 4. An additional registration of the ID code in the memory, a rewriting registration in the memory, or a registration of the already registered ID code in accordance with the number of times of turning on / off an ignition switch of the vehicle . 4. The keyless entry device according to claim 3, wherein any one of the number confirmations is selected.