JPH11247504A - Remote controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high security remote controller as a keyless entry device for a vehicle, in which ID codes can be easily registered in a receiver attached to the vehicle from the outside of the vehicle and thereafter, an unfavorable alteration can not be input. SOLUTION: This controller is provided with a first transmitter outputting codes for a register mode and a second transmitter outputting ID codes. Coded signals received in a receiver 12 are compared by a code comparator 23A of a microcomputer 23. When the signal coincides with a code for a register mode stored in a first memory 24A, an ID code register 23B works to cancel the code for the register mode stored in the first memory 24A and store an ID code of the second transmitter attached to respective cars in a second memory 24B. In this way, a high security remote controller is realized in such a manner that an ID code can be easily registered when incorporating it in a vehicle but an unfavorable ID can not be altered after the registration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device mainly used for a keyless entry device for a vehicle.

[0002]

2. Description of the Related Art In recent years, a keyless entry device for remotely controlling a door of a vehicle using a transmitter without using an engine key has become widespread. Is operated, a predetermined ID code is transmitted from the transmitter, received by the receiver mounted on the vehicle side, and stored in the receiver in advance.
When the codes match, the door of the vehicle is locked or unlocked. Such a keyless entry device will be described.

FIG. 5 is a block diagram of a transmitter of a conventional keyless entry device, and FIG. 6 is a block diagram of a receiver.
In FIG. 5, 1 is a transmission switch for transmitting a coded signal, 2 is a microcomputer for controlling the operation of the transmitter (hereinafter referred to as a microcomputer), 3 is a memory storing an ID code, and 4 is a signal transmitted from the microcomputer. A transmitting unit that modulates the coded signal and transmits the modulated signal via the transmitting antenna 5;
Reference numeral 6 denotes a battery as a power source for each unit.

In FIG. 6, 11 is a receiving antenna, 12 is a receiving section for receiving and demodulating a modulated coded signal, and 13 is a microcomputer, which controls the operation of the receiver and outputs the demodulated coded signal and I stored in the memory 14
An output circuit 15 receives a signal from the microcomputer 13 and generates a control output for controlling the door lock actuator 16 which is an operating body.

[0005] Reference numeral 17 denotes a stabilized power supply circuit for supplying power from the battery 18 of the vehicle to each of the above components.

The operation of the conventional keyless entry device having the above-described configuration will be described. When the transmission switch 1 of the transmitter is turned on, the microcomputer 2 generates a coded signal in accordance with the ID code of the memory 3, and the signal is generated. The signal is modulated by the transmission unit 4 and transmitted via the transmission antenna 5,
The coded signal received and demodulated by the receiving unit 12 of the receiver via the receiving antenna 11 is compared with the ID code stored in the memory 14 by the code comparing unit 13A of the microcomputer 13.

If the received coded signal matches the ID code stored in the memory 14,
Output circuit unit 1 according to an output signal from microcomputer 13
5 generates a control output and the door lock actuator 16
To work.

The received coded signal is stored in the memory 1
If the ID code does not match the ID code No. 4, the received coded signal is ignored and the receiver waits for the next coded signal.

[0009]

However, the transmitter and the receiver used in such a conventional keyless entry device need to match the ID codes stored in advance with each other, so that they can be incorporated into a vehicle. Sometimes, the same ID code is stored in advance to use a paired transmitter and receiver, or, if the receiver is incorporated into a vehicle regardless of the transmitter, the receiver memory 14 is attached to the vehicle. It is necessary to store the same ID code as that of the transmitter to be transmitted. In the former case, the transmitter and receiver must be managed as a pair from the production department of the keyless entry device to the process of assembling the vehicle. In the latter case, a switch for registering the ID code on the receiver side is provided at a predetermined place of the vehicle, and the receiver is used to identify the ID code. A new ID code is received by using a transmitter provided in the code registration mode, and the new ID code is registered in the memory 14 on the receiver side. Such a switch is operated by a third party. It is usually installed in a place where it is difficult to operate in order to prevent unintentional operation, and there is a disadvantage that it takes time and effort to assemble it into a vehicle or install it at a dealer.

The present invention solves such a conventional problem, and does not require a paired management of a transmitter and a receiver until it is installed in a vehicle. It is an object of the present invention to provide a remote control device with high security that can easily register an ID code only by an operation from a user and that prevents a third party from inadvertently changing the ID code.

[0011]

In order to solve the above-mentioned problems, a remote controller according to the present invention comprises a first transmitter for transmitting a unique registration mode code and a second transmitter for transmitting an ID code. And the receiver has first and second memories for separately storing the same registration mode code and ID code as those of the transmitters. When a match with the one stored in the first memory is recognized, the registration mode code stored in the first memory is removed, and the second transmission attached to each vehicle in the second memory is performed. The new ID code transmitted from the device is stored.

Thus, after the receiver is installed in the vehicle, the first transmitter is operated from outside the vehicle to erase the stored registration mode code, and the unique ID attached to each vehicle. A new ID code can be stored by using the second transmitter having the code, so that the setting at the time of assembling into a vehicle is easy, and thereafter, a high security that prevents unintentional change of the ID code is prevented. A remote control device can be realized.

After the registration mode code in the first memory of the receiver is erased and a new ID code is registered in the second memory, a second transmission for transmitting the new ID code is performed. In the event that the machine is lost or damaged and becomes unusable, a specific second party, such as a vehicle dealer, may use another procedure to store another new second transmitter in at least one of the first and second memories. Means, such as storing the ID code possessed, can also be provided.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first aspect of the present invention provides a first transmitter for modulating a unique registration mode code and transmitting a coded signal, and a first transmitter for modulating a unique ID code. The second transmitter for transmitting the coded signal, the ID code can be registered by receiving the coded signal of the first transmitter, receiving and identifying the coded signal of the second transmitter, A receiver for outputting a predetermined control signal, the receiver receives and demodulates the coded signal, and a first and second memory for separately storing a registration mode code and an ID code, A code comparing unit that compares the coded signal demodulated by the receiving unit with the registration mode code and the ID code stored in the first and second memories to determine whether they match, and a code comparing unit. Registration mode code When a match is recognized, the device enters the ID code registration mode, erases the registration mode code stored in the first memory, and stores the newly received ID code of the second transmitter in the second memory. An ID code registration unit to be controlled, and a remote control device having an output circuit unit that generates a control output to the operating body when a match with the ID code is recognized.
After installing the individual receivers regardless of the transmitter, put the receiver of each vehicle in the ID code registration mode using one first transmitter that stores the unified registration mode code from outside the vehicle, The ID code can be easily registered in the receiver by using the second transmitter attached to each vehicle,
After that, the registration mode code stored in the first memory of the receiver will be erased, so that unintended changes and unlocking of many vehicles by a third party due to duplication of the registration mode code will be prevented. It has the effect of being able to.

According to a second aspect of the present invention, in the first aspect of the present invention, the ID code registration unit that has entered the ID code registration mode upon recognition of the coincidence of the registration mode codes is stored in the first memory. The registered mode code is deleted, the ID code of the second transmitter is stored in the second memory, and the ID code of the third transmitter having another ID code is stored.
A D-code is stored in a first memory. In addition to the function of the above-mentioned claim 1, when the number of drivers using the same vehicle is plural, the number of transmitters transmitting the ID code is increased. It has the effect of being able to.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram showing the configuration of first and second transmitters of a keyless entry device as a remote control device according to a first embodiment of the present invention, and FIG. FIG. 2 is a block diagram showing the configuration. The configuration of the transmitter shown in FIG. 1 is the same as that described in the section of the prior art, so a detailed description will be omitted. The second transmitter stores an ID code in its memory 3A.

The configuration of the receiver shown in FIG. 2 differs from that described in the section of the prior art in that the microcomputer 23 and the memory 24 are different from each other.
The description of the other parts is omitted.

That is, the microcomputer 23 is provided with an ID code registration unit 23B for controlling the erasure and registration of the contents stored in the memory 24 in addition to the code comparison unit 23A.
Reference numeral 4 denotes a first memory 2 storing a code for a registration mode.
4A and a second memory 24B for storing an ID code.

The operation of registering the ID code in the receiver of the keyless entry device thus configured will be described with reference to the operation flowchart of the receiver of FIG.
First, the transmission switch 1 of the first transmitter is operated to operate the memory 3
When a coded signal modulated in accordance with the registration mode code stored in is received and demodulated by the receiving unit 12 via the receiving antenna 11 (step 31), the first and second codes are compared by the code comparing unit 23A. Memory 24A, 2
4B, and when it is recognized that the code matches the registration mode code stored in the first memory 24A (step 32), the ID code registration unit 23B of the microcomputer 23 registers the ID code. The mode is set (step 33).

Here, when the second transmitter attached to the vehicle is operated and it is recognized that the signal has been received by the receiver 12 (step 34), the registration stored in the first memory 24A is performed. The mode code is erased (step 35), and the ID code is registered and stored in the second memory 24B (step 36).

Next, the operation for locking or unlocking the vehicle door using the second transmitter having the ID code will be described. First, the transmission switch 1 of the second transmitter is operated to operate the code. When the coded signal is transmitted, the coded signal received via the receiving antenna 11 is demodulated by the receiving unit 12 according to the flowchart of FIG. The contents stored in the first and second memories 24A and 24B are compared with each other, and the data stored in the second memory
When it is recognized that the ID code matches the ID code stored in 4B (step 37), a signal is output from the microcomputer 23 to the output circuit unit 15 so that the output circuit unit 15 is output.
Outputs a control output (step 38), and operates the door lock actuator 16 as an operating body (step 3).
9) The door can be locked or unlocked.

If the coded signal received in the above step does not match the registration mode code stored in the first memory 24A or the ID code stored in the second memory 24B, The coded signal is ignored and the next coded signal is awaited.

As described above, according to the present embodiment, the receiver of the keyless entry device attached to the vehicle by the vehicle assembling process or a specific contractor is identified by the first transmitter using the ID.
In the code registration mode, the ID code can be stored in the second memory of the receiver using the second transmitter attached to each vehicle, and the ID code can be easily stored from outside the vehicle. In addition, the ID code cannot be changed again because the registration mode code has been erased thereafter, and undesired changes and unlocking of many third-party vehicles by duplication of the registration mode code will occur. Thus, a keyless entry device with high security can be provided.

(Embodiment 2) FIG. 4 is a flowchart of the operation of a receiver of a keyless entry device as a remote control device according to a second embodiment, and shows steps compared to those of the first embodiment. Forty have been added.

That is, the configuration and operation of the transmitter in this case are the same as those of the first embodiment, but in addition to the first and second transmitters, an ID code different from that of the second transmitter is used. Is stored in the memory 3B, and the configuration of the receiver is the same as that of the first embodiment, but a step 40 is added to the operation of the microcomputer 23.

The operation in this case will be described with reference to the flowchart of FIG. 4. First, the receiver receives the registration mode code (step 31), and the code comparison unit 23
When a match with the registration mode code stored in the first memory 24A is recognized in A (step 32), the ID code registration unit 23B enters the ID code registration mode (step 33), and the receiving unit 12 sets the ID code registration mode. After recognizing that the ID code of the second transmitter has been received (step 34), the registration mode code stored in the first memory 24A is deleted (step 35), and the second memory 24B is stored in the second memory 24B. The ID code of the third transmitter is stored as ID code registration (1) (step 36), and the ID of the third transmitter is further stored.
The code is stored in the first memory 24A as ID code registration (2) (step 40).
When the second or third transmitter is operated to lock or unlock the vehicle door, the received coded signal is transmitted to the first and second memories 24A and 24B by the code comparing unit 23A. The stored ID code is compared with the stored ID code, and when it is recognized that either one of the ID codes matches (step 37), a signal is output from the microcomputer 23 to the output circuit unit 15, whereby the output circuit unit 15 outputs a control output (step 37). 38) By operating the door lock actuator 16 as an operating body (step 39), the door can be locked or unlocked.

According to the present embodiment, I
The D code can be registered, and a keyless entry device with high security can be obtained. In addition, if there are a plurality of drivers using the same vehicle, the number of transmitters transmitting the ID code can be changed as necessary. Can be increased.

[0028]

As described above, according to the present invention, after the receiver is installed in the vehicle, the transmitter can be operated from outside the vehicle to register the unique ID code of the transmitter attached to each vehicle. Highly secure remote control that is easy to set up when installing in a vehicle and erases the registration mode code used during registration to prevent a third party from changing the ID code unintentionally. The device can be implemented, and when there are multiple users of the same vehicle,
An advantageous effect is obtained that the number of transmitters for transmitting the D code can be easily increased.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a transmitter of a keyless entry device as a remote control device according to first and second embodiments of the present invention.

FIG. 2 is a block diagram showing a configuration of the receiver.

FIG. 3 is a flowchart showing the operation of the receiver.

FIG. 4 is a flowchart showing an operation of a receiver of a keyless entry device as a remote control device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a transmitter of a conventional keyless entry device.

FIG. 6 is a block diagram showing a configuration of the receiver.

[Description of Signs] 1 Transmission switch 2, 23 Microcomputer 3, 3A, 3B, 24, 24A, 24B Memory 4 Transmission unit 5 Transmission antenna 6, 18 Battery 11 Receiving antenna 12 Receiving unit 15 Output circuit unit 16 Door lock actuator 17 Stabilized power supply circuit section 23A Code comparison section 23B ID code registration section

Claims (2)

[Claims] A first transmitter for modulating a unique registration mode code and transmitting a coded signal; a second transmitter for modulating a unique ID code and transmitting a coded signal;
The coded signal of the first transmitter can be received to register an ID code, the coded signal of the second transmitter can be received and identified, and a receiver that outputs a predetermined control signal, A receiver for receiving and demodulating the coded signal;
First and second memories for separately storing a registration mode code and an ID code, and a registration mode code and an ID stored in the first and second memories for the coded signal demodulated by the receiving unit. A code comparing unit for comparing with the code to determine whether or not the code matches; and a code stored in the first memory in the ID code registration mode when the code comparing unit recognizes a match with the registration mode code. An ID code registration unit for erasing the mode code and storing the newly received ID code of the second transmitter in the second memory; and outputting a control output to the operating body when a match with the ID code is recognized. A remote control device having an output circuit section for generating. 2. An ID code registration unit which has entered an ID code registration mode upon recognition of a match of a registration mode code deletes a registration mode code stored in a first memory, and a second transmitter The ID code is stored in the second memory, and the ID of the third transmitter having another ID code is stored.
The remote control device according to claim 1, wherein the D code is stored in the first memory.