JPH10184127A - Remote controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible remote controller at low cost by switching between a combined use of comparisons of an ID code and a change code and only the comparison of the ID code, in judging received signals of a transmitter to be proper or improper. SOLUTION: Signals from a transmitter containing a first ID code, a first change code, and a control code are received by a receiving part 12 of a receiver 2 and compared with a second ID code memorizing the first ID code in the memory part 13, by an ID code comparison part 18 of a signal processing part 17. The first change code and the second change code which is formed by changing a previous change code memorized in the change code memory part according to a prescribed regulation are compared by a change code comparison part 19. When the respective codes are accorded with each other, the control code memory part 16 reads out the control code and a control signal is issued from a signal issue part 20 so as to control a controllable mechanism 3. When the degree of security function is low or signals from a plurality of transmitters are concentrated at one time, a change code comparison stop part 21 is operated by a function change switch 22 so as to change it into the comparison only by the ID code.

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, and more particularly, to a vehicle door operating a portable transmitter.
The present invention relates to a remote control device used for a keyless entry system that opens and closes a garage door, an entrance door of an apartment, and the like.

[0002]

2. Description of the Related Art In general, a keyless entry system comprises a portable transmitter, a stationary receiver, and various controlled mechanisms. In this case, the portable transmitter is usually carried by the operator (user), and when the controlled mechanism is an automobile door, the stationary receiver is provided at a predetermined position on the vehicle side with the garage. If it is a door, it is installed at a predetermined location on the garage side, and if the controlled mechanism is an entrance door of an apartment, it is installed at a predetermined location near the entrance door. Then, when operating the keyless entry system, when the operator approaches the controlled mechanism to be controlled and operates the hand-held portable transmitter, a transmission signal is output from the portable transmitter, and the transmitted signal is transmitted to the controlled mechanism. When it is received by the stationary receiver installed on the side, it determines whether control is appropriate based on the transmission signal received by the stationary receiver, and if it is appropriate, supplies a control signal to the controlled mechanism Then, a predetermined control operation for the controlled mechanism, for example, opening / closing of an automobile door, opening / closing of a garage door, opening / closing of an entrance door of an apartment, and the like are performed.

[0003] Such a known keyless entry system can generally use a portable transmitter and a stationary receiver in a one-to-one correspondence, and can use a single portable transmitter to install a plurality of portable transmitters. Operating the portable receiver and controlling the plurality of controllable mechanisms in which each of the plurality of stationary receivers is installed, or any one of the portable transmitters among the plurality of portable transmitters Using the transmitter, one stationary receiver can be operated to control a controllable mechanism in which the stationary receiver is installed.

[0004] When a plurality of stationary receivers are used for one portable transmitter, or when one stationary receiver is used for a plurality of portable transmitters, When the stationary receiver generates a control signal for controlling the non-control mechanism in response to the transmission signal transmitted from the portable transmitter, the portable transmitter is controlled based on the transmission content of the received transmission signal. Is determined as to whether or not it is compatible with the keyless entry system, and a control signal is generated only when a determination result indicating that it is compatible is obtained.

By the way, when determining whether or not the portable transmitter is compatible with the keyless entry system, a means using an ID code as one determining means (hereinafter referred to as a first determining means). )It has been known. The first determining means assigns the same ID code to both the portable transmitter and the stationary receiver in advance, and assigns the assigned ID code to the first ID code storage unit on the portable transmitter side and the stationary ID receiver side. When the transmission signal is transmitted from the portable transmitter, the transmission signal including the ID code is transmitted, and when the transmission signal is received by the stationary receiver, The ID code included in the transmission signal is compared with the ID code stored therein, and when they match, it is determined that the portable transmitter is valid and the controlled mechanism is controlled. To generate a control signal. In this case, one ID code is assigned to the portable transmitter, whereas a plurality of ID codes are assigned to the stationary receiver in many cases. One of the portable transmitters can be used to operate one stationary receiver and control the controllable mechanism in which the stationary receiver is installed.

[0006] When a plurality of ID codes assigned to a plurality of stationary receivers include an ID code common to the plurality of stationary receivers, a plurality of stationary receivers can be operated by one portable transmitter. Thus, a plurality of controllable mechanisms can be controlled.

However, in the case of the first judging means using the ID code, the ID code can be copied relatively easily by using the current electronic technology. Judgment of the match with the ID code of the type receiver is not enough for crime prevention,
Frequently, there is a risk that unauthorized control may be performed on the controllable mechanism. For example, a condominium that requires a much higher security function than a garage door when one portable transmitter is used to control the opening and closing of the garage door and the entrance door of the apartment There is a danger that the front door of the user will be opened by a malicious and malicious operator by copying and stealing the ID code.

In order to eliminate such a risk, an ID code and a change code (rolling code) are used as another means for determining whether or not the portable transmitter is compatible with the keyless entry system. (Hereinafter, this is referred to as a second determination unit) is known. The second determining means updates a change code (rolling code) that is sequentially changed in accordance with a predetermined rule on both the portable transmitter side and the stationary receiver side. Every time is transmitted, the change code to be updated is included in the transmission signal and transmitted, and every time the stationary signal is received, the modification code included in the transmission signal and the stationary reception are transmitted. The change code is compared with the change code updated in the aircraft, and as a result of the comparison, the content of the ID matches the predetermined criterion, and as described above, the ID included in the transmission signal. The code is compared with the ID code stored therein, and when they match, it is determined that the portable transmitter is genuine, and a control signal for controlling the controlled mechanism is generated. Things.

[0009]

The above-mentioned known keyless entry system uses the second judging means,
The change code is changed independently for each ID code.
In this case, since only one ID code is assigned to the portable transmitter, only one change code storage unit needs to be provided. However, since a plurality of ID codes are usually assigned to a stationary receiver, when the number of assigned ID codes increases, for example, when the controllable mechanism is a garage door of an apartment and the garage is When a large number (more than 20 people) are used, a number of change code storage units corresponding to the number are required. When the number of change code storage units increases,
Not only does that require a large amount of memory,
It takes a long time to read the contents stored in the memory, and as a result, there is a problem that the processing speed of various data and the like in the stationary receiver is reduced.

In the known keyless entry system, if the ID code assigned to all portable transmitters is selected to be the same ID code when the second determination means is used, a plurality of portable transmission The update code update speed of each portable transmitter of the device is different from the update code update speed of one stationary receiver shared by a plurality of portable transmitters ( Since the change code of the stationary receiver is updated every time a transmission signal is received without distinguishing the portable transmitter, the update progress speed is remarkably increased.) There is a problem that a predetermined reference value is deviated, and thereafter, the stationary receiver cannot generate a control signal by a transmission signal from the portable transmitter.

The present invention solves these problems, and its purpose is to determine whether a transmitter to be used is appropriate or not.
It is an object of the present invention to provide a remote control device capable of switching from determination using a D code and a change code to determination using only an ID code.

[0012]

In order to achieve the above object, a remote control device of the present invention uses a judging means utilizing an ID code and a change code when judging the suitability of a transmitter to be used. Normally, the comparison result between the transmitter side ID code and the receiver side ID code, and the comparison result between the change code transmitted from the transmitter side and the change code obtained at the receiver side are respectively When it is within the preset reference value, it generates a control signal to the controllable mechanism based on the control code in the transmission signal, while performing a predetermined operation or under a predetermined condition. A means for generating a control signal from the control signal generator if the comparison result between the transmitter side ID code and the receiver side ID code is within a preset reference value only when doing.

According to the above-mentioned means, when judging the suitability of the transmitter to be used, at the time of the normal operation, the judgment is made by comparing the ID code having the high security function and the change code together. When performing the control that may be lower, the control is switched to the determination based on the comparison of only the ID code, so that the control of the controllable mechanism can be performed in a highly flexible state.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In an embodiment of the present invention, a remote control device comprises one or more transmitters and one or more receivers installed in a controllable mechanism, wherein the transmitters are predetermined. A first ID code storage unit for storing the obtained first ID code, a first change code generation unit for generating a first change code which is changed according to a predetermined rule each time transmission is performed, and a control predetermined by the controllable mechanism. A control code storage unit for storing a control code for executing the operation, and a transmission unit for transmitting a transmission signal including a first ID code, a first change code, a control code, and the like. A receiving unit that generates a transmission signal; a second ID code storage unit that stores a plurality of second ID codes; and a second change code generation unit that generates a second change code that is changed according to a predetermined rule each time the first ID code is received. A first ID code in the reproduced transmission signal and a second ID code stored in the second ID code storage unit each time an RF signal is received; and a first ID code in the reproduced transmission signal. A change code comparison unit that compares the change code with the second change code obtained by the second change code generation unit, and when each comparison result of the ID code comparison unit and the change code comparison unit is within a preset reference value. A control signal generating unit for generating a control signal based on a control code in the reproduction transmission signal, and a comparison result of the ID code comparison unit only when a predetermined operation is performed or when a predetermined condition is satisfied. A change code comparison stop unit for generating a control signal from the control signal generation unit if the control signal is within a preset reference value.

[0015] In one embodiment of the present invention, the predetermined operation in the change code comparison stop unit is an operation of a function change switch provided in the receiver.

According to the embodiment of the present invention, when the receiver receives an RF signal from the transmitter, the transmitter that has transmitted the RF signal is a transmitter suitable for the remote control device. When judging whether or not, at the time of normal operation, for example, when executing control for a controllable mechanism having a high security function, the ID code and the change code on the transmitter side, and the ID code on the receiver side And a change code, respectively, and make a decision based on the comparison result. On the other hand, when performing a special operation, for example, executing a control that may require a lower security function, the transmitter side Since only the ID code and the receiver-side ID code are compared and the determination is switched to the determination based on the comparison result, the control of the controllable mechanism can be executed in a highly flexible state.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a transmitter in a configuration of a remote control device according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a remote control device according to an embodiment of the present invention. FIG. 2 is a block diagram showing a partial configuration of a receiver side and a controllable mechanism side of FIG.

As shown in FIGS. 1 and 2, the keyless entry system comprises a portable transmitter (hereinafter simply referred to as a transmitter) 1 and a stationary receiver (hereinafter simply referred to as a receiver) 2. Normally, the transmitter 1 is carried by the operator, and the receiver 2 is located at any position on the controllable mechanism 3 side, and as in the present embodiment, the controllable mechanism 3 is an automobile door. In this case, the controllable mechanism 3 is installed near a garage door when the controllable mechanism 3 is a garage door of a condominium, or around the entrance door when the controllable mechanism 3 is an entrance door of each room of the condominium.

As shown in FIG. 1, the transmitter 1 includes an operation button 4 having a plurality of buttons for performing a desired control operation on the controllable mechanism 3, and a transmission side (first )
A first change code storage unit 5 for storing a change code (rolling code), and a first change code read from the first change code storage unit 5 at the time of transmission of a transmission signal, is updated according to a predetermined rule, and is updated. A first change code generator 6 for generating a first change code, a first ID code storage 7 for storing a transmitter (first) ID code assigned to the transmitter 1 in advance, and a plurality of operation buttons 4 A control code generator 8 for generating a plurality of control codes respectively corresponding to the buttons, a transmission signal generator 9 for forming a transmission signal including a first ID code, a first change code, a control code, and the like; It comprises a transmitting unit 10 for carrying an RF signal and a transmitting antenna 11 for transmitting the RF signal.

The operation buttons 4 are connected to input terminals of a first change code generator 6, a first ID code memory 7, and a control code generator 8, respectively. The first modified code generator 6 has an input / output terminal connected to the input / output terminal of the first modified code storage unit 5 and the input terminal of the transmission signal forming unit 9.
The transmission signal forming unit 9 has an input terminal connected to each output terminal of the first ID code storage unit 7 and the control code generation unit 8, and an output terminal connected to an input terminal of the transmission unit 10. The transmitting unit 10 has an output terminal connected to the transmitting antenna 11.

Also, as shown in FIG.
Is a receiving unit 12 for generating a reproduction transmission signal from an RF signal received by the receiving antenna 24, and a second ID code for storing one or more receiving side (second) ID codes pre-assigned to the receiver 2. The storage unit 13, a second change code storage unit 14 for storing a receiving side (second) change code (rolling code), and a second readout from the second change code storage unit 14 when a transmission signal is received. A second updating unit that updates the change code according to a predetermined rule and generates an updated second change code;
A change code generation unit 15, a control code storage unit 16 for storing a plurality of control codes, a first ID code included in the reproduced transmission signal, and a second ID code stored in the second ID code storage unit 13. ID code comparing unit 18 that compares
And a first change code and a second change code included in the reproduced transmission signal.
Comparison of a change code comparison unit 19 that compares the second change code obtained by the change code generation unit 15, a control signal generation unit 20 that generates a control signal to be supplied to the controllable mechanism 3, and a change code comparison unit 19 A change code comparison stop unit that stops operation and a transmission signal determination unit that detects when the reception state of the transmission signal conforms to a predetermined rule and operates the change code comparison stop unit based on the detection result are included. A signal processing unit 17 and a change code comparison stopping unit 21 during operation
And a function change switch 22 provided with a switch for operating.

The receiving unit 12 has an input terminal connected to the receiving antenna 24 and an output terminal connected to the signal processing unit 17. The second ID code storage unit 13 has an input terminal connected to the signal processing unit 17 and an output terminal connected to an input terminal of the ID code comparison unit 18. The input / output end of the second change code storage unit 14 is connected to the input / output end of the second change code generation unit 15. The second modified code generator 15 has an output terminal connected to the input terminal of the modified code comparison unit 19 and a control code storage unit 16.
Has an input / output end connected to the signal processing unit 17. The output end of the control signal generator 20 is connected to the input end of an automobile door opening / closing controller (controllable mechanism, concrete configuration not shown) 3. The change code comparison stop unit 21 has each input terminal connected to the function change switch 22 and the output terminal of the transmission signal determination unit 23, respectively.

The keyless entry system according to the present embodiment having the above configuration operates as follows.

In the normal mode, the case where the controllable mechanism 3 is a door of an automobile will be described.

First, a case where the receiver 1 performs a normal operation, that is, a case where the operation state of the receiver 1 is the normal mode will be described.

First, the operator of the transmitter 1, that is, the person carrying the transmitter 1, operates the transmitter 1 to a position relatively close to the vehicle door to be controlled, specifically, the transmitter 1. Is close enough to receive the transmitted signal from the receiver 2 installed in the automobile.

Here, when a desired button among the operation buttons 4, for example, a button for opening an automobile door is operated on the transmitter 1, the switch information corresponding to the button is output, and the first information is output. The change code generator 6, the first ID code memory 7, and the control code generator 8 are supplied. Upon receiving the switch information, the first change code generation unit 6 reads the immediately preceding first change code stored in the first change code storage unit 5, and sets the read first change code to a value according to a predetermined rule. And updates it to generate an updated first change code. The updated first change code is supplied to the transmission signal forming unit 9 and the first
The change code is stored in the storage unit 5 and stored there. In this case, the update of the first change code in the first change code generator 6 may be an update by changing the count value according to a certain numerical rule, or may be a change by changing a random count value. . When receiving the switch information, the first ID code storage section 7 reads out the first ID code that has been allocated to the transmitter 1 in advance and has already been stored, and supplies the first ID code to the transmission signal forming section 9. Upon receiving the switch information, the control code generator 8 generates a control code corresponding to the type of the switch information, here, a control code for unlocking the automobile door, and supplies the control code to the transmission signal generator 9. The transmission signal formation 9 includes the supplied first ID code, first change code,
A transmission signal is formed by combining a control code with a start code, an end code, and the like, and is supplied to the transmission unit 10. Transmission unit 10
Puts the supplied transmission signal on the RF signal and transmits it from the transmission antenna 11 to the receiver 2.

Next, on the receiver 2 side, when the RF signal transmitted from the transmitter 1 is received by the receiving antenna 24 and supplied to the receiving section 12, the receiving section 13 reproduces the transmission signal from the RF signal. As a result, a reproduction transmission signal is generated and supplied to the signal processing unit 17. When the reproduced transmission signal is obtained by the signal processing unit 17, the second ID code storage unit 13 reads out the second ID code that has been allocated to the receiver 2 and has already been stored, and supplies the second ID code to the ID code comparison unit 18. . The second change code generation unit 15 reads the immediately preceding second change code stored in the second change code storage unit 14 and follows the read second change code according to a predetermined rule in the same manner as the transmitter 1. The value is counted and updated, and an updated second change code is generated. The updated second change code is supplied to the change code comparison unit 19 and is also supplied to the second change code storage unit 14 and stored therein. in this case,
The update of the second change code in the second change code generator 6 is performed in the same manner as the update of the first change code on the transmitter 1 side, and is performed by changing the count value according to a certain numerical rule. Or a change by a random change of the count value. The control code storage unit 16
When the reproduction transmission signal is obtained in the signal processing unit 17, the control code already stored is read out and supplied to the signal processing unit 17. The ID code comparing unit 18 detects the first
When an ID code and a second ID code sequentially supplied from the second ID code storage unit 13 are input, the first ID code and the second ID code are compared, and when they match, a match signal is generated. If they do not match, the signal processing is interrupted. If the ID codes match, the change codes are compared. The change code comparison unit 19 receives the first change code in the reproduced transmission signal supplied from the reception unit 12 and the updated second change code supplied from the second change code storage unit 15. Comparing the first change code and the second change code, and when they are within a predetermined reference value, specifically, the difference in the way of proceeding by updating both change codes is within a predetermined numerical value. Generates a match signal.

When the change signal is supplied from the change code comparing section 19, the signal processing section 17 controls the control code contained in the reproduced transmission signal and the plurality of control codes read from the control code storage section 16. Are sequentially compared, and if there is a matching control code, the control signal generator 20 is driven,
The control signal generator 20 generates a control signal corresponding to the control code, in this case, a control signal for opening the door of the automobile. This control signal is supplied to an opening / closing control unit (not shown) of the automobile door 3 to unlock the automobile door. Note that the signal processing unit 17 reads out the control code in the reproduction transmission signal and the control code storage unit 16 when the match signal is not supplied from one or both of the ID code comparison unit 18 and the change code comparison unit 19. No comparison with the plurality of control codes is performed, and therefore, no control signal is generated from the control signal generator 20.

Next, in the keyless entry system according to the present embodiment, the operation state of the receiver 1 is changed from the normal mode to the cancel mode, that is, the transmitter 1 which has transmitted the transmission signal.
An operation example in the case of switching to an operation state in which the determination is made by comparing only the ID code will be described.

However, in this operation example, the controllable mechanism 3 is a garage door of a condominium, and the opening / closing operation of the garage door of this condominium is performed by the transmitter 1 which a relatively large number of operators carry individually. It is assumed that the opening / closing operation can be performed by the user and the security function may be low.

First, an administrator who manages the garage operates the function change switch 22 provided on the receiver 2 before operating the transmitter 1 near the garage door. At this time, the function change switch 22 generates operation switch information and supplies it to the change code comparison stop unit 21. The change code comparison stop unit 21 generates a change code comparison stop signal by supplying the operation switch information.

Here, an operator who is a user of the garage,
In many cases, when a resident of an apartment operates the operation button 4 of his / her transmitter 1, a transmission signal is formed through the above-described series of operation steps based on the operation, and an RF signal is transmitted from the transmitter 1. Sent. Next, when the receiver 2 receives the transmitted RF signal, a control signal is formed through a series of operation steps as described above, and the control signal becomes the controllable mechanism 3. (Not shown) to open and close the garage door.

In a series of operation steps executed by the receiver 2, the signal processing unit 17
When the control signal is generated via the ID code comparison unit 18, the change code comparison stop unit 21 always outputs the change code comparison stop signal. 1st included in
When the ID code matches the second ID code read from the second ID code storage unit 13 and a match signal is output thereby, a change signal is output via the control signal generation unit 20 without comparison. A control signal is generated.

As described above, the operation of the receiver 2 after the operation of the function change switch 22 is performed by determining whether the transmitter 1 to be used is appropriate or not by determining the first ID code transmitted from the transmitter 1 and the receiver 2 side. The operation only needs to be compared with the second ID code stored in, that is, the mode is switched to the cancel mode.

In the case of the above example, the memory of the receiver 2
Although the storage capacity is not extremely large as compared with the receiver used for opening and closing the door of the automobile, the reason for this is that the second I
While increasing the storage capacity of the D code storage unit,
This is because the configuration is such that the storage capacity of the second change code storage unit is the same or smaller. By adopting the cancel mode, when the number of the registered second ID codes is smaller than the number of the second change mode storage unit 14, that is, when the number of garage users is small, the operation of the receiver 2 is performed. The mode is operated in the normal mode, and the number of the second ID codes to be registered is increased.
When the number of users exceeds the number, that is, when the number of garage users increases, the operation mode can be changed to the cancel mode to cope with the increase in the number of users.

In the above example, the cancel mode is set uniformly for all ID codes.
Next, a case where the cancel mode is set only for a specific ID code will be described.

In this case, for example, when the garage door of the apartment is opened and closed, there is a garage user who is not the resident of the apartment, and when the resident of the apartment uses it, the cancel mode is set. Set the normal mode when other people use. This is for the purpose of increasing security of garage users who are not residents of apartments.

Here, a method for selectively setting the cancel mode will be described. First, a method for setting an arbitrary ID code among the ID codes already stored in the second ID code storage unit 13 to the cancel mode will be described.

The garage manager prepares the transmitter 1 to which the ID code is assigned, and operates the function change switch 22. After operating the function change switch 22, the operation button 4 of the transmitter 1 is set within a predetermined time, for example, 10 seconds. Is continuously pressed a predetermined number of times, for example, five times. By performing the above operation, the ID code of the transmitter 1 is set to the cancel mode.

To explain the setting process, the transmission signal determination unit 23 of the signal processing unit 17 of the receiver 1 starts timing immediately after the function change switch 22 is operated, and the same ID code is set within a predetermined time. Is output to the modified code comparison and stop unit 21 when the reproduction transmission signal including the “.” Is input a predetermined number of times in succession, and the modified code comparison and stop unit 21 receives the condition matched signal. Generates a change code comparison stop signal. In this case, since the change code comparison stop signal is associated with the ID code, only the ID code is set to the cancel mode.

Next, in the same manner as in the method of selectively setting the cancel mode, the method of newly registering in the receiver 2
A method for setting the cancel mode for only the D code will be described.

This method is performed following the process of registering a new ID code.
This is performed by turning on the ID code writing switch 23 attached to the receiver 2 and operating any operation button 4 of the transmitter 1 to be registered next.

The registration process will be described. The transmission signal transmitted from the transmitter 1 is transmitted to the receiver 1 of the receiver 2.
2 and input to the signal processing unit 17 as a reproduction transmission signal, the ID code writing unit 24 stores the ID code contained in the input reproduction transmission signal in the ID code storage unit 13.
Write to.

In this case, in the signal processing section 17, the transmission signal determination section 23 starts counting time from when the ID code write switch 23 is turned on, and the reproduced transmission signal that is successively input uses the same ID code. If the signal has the same reproduction transmission signal, it is configured to count the number of the signals, and the same reproduction transmission signal is input for a predetermined time, for example, 5 seconds after the ID code writing switch 23 is turned on. In such a case, it is configured to output a condition match signal to the change code comparison stop unit 21. Therefore, when canceling only the ID code, the change code comparison stop unit 21 may turn on the ID code write switch 23 and then operate the operation button 4 of the transmitter 1 a predetermined number of times within a predetermined time. . In the above process,
When a reproduction transmission signal including the same ID code is continuously input to the signal processing unit 17, the ID code writing unit 24
Writes only the first ID code into the ID code storage unit 13 and outputs the reproduced transmission signal arriving after that.
It is configured not to write the D code.

In the keyless entry system of this embodiment, in order to return the operation state of the receiver 2 from the cancel mode to the normal mode, the function change switch 22 may be operated again. At this time, when the operation state of the receiver 2 is set to the cancel mode only for any specific ID code, the setting is made so that all the ID codes are returned to the normal mode by operating the function change switch 22 again. You may. Also, as an example of a method of returning to the normal mode only for a specific ID code when only a specific ID code is set to the cancel mode, the ID code writing switch 23 is turned on once to write the ID code. After changing to the mode, with the function change switch 22 operated,
If a reproduction transmission signal including the same ID code is input a predetermined number of times within a predetermined time, the ID code may be set to return to the normal mode.

In the above embodiment, the internal configuration of the signal processing unit 17 has been described by using the configuration requirements that are represented by specific names, but all or some of the configuration requirements are configured by a computer program. You may do so.

As described above, according to the keyless entry system of the present embodiment, when judging the suitability of the used transmitter 1, the ID having the high security function is used during the normal operation.
When the security function is low, the determination is made based on the comparison of only the ID code.
Can be executed in a flexible state.

In this embodiment, the remote control device is a keyless entry system and the controllable mechanism 3 is an automobile door or a garage door of a condominium. However, the remote control device according to the present invention is The controllable mechanism 3 according to the present invention is not limited to a keyless entry system but may be another similar system. The controllable mechanism 3 is not limited to a car door or a garage door of a condominium. Other controllable mechanisms, such as the activation of the device, may be used.

[0051]

As described above, according to the present invention, when an RF signal from a transmitter is received on the receiver side, the transmitter that has transmitted the RF signal is a transmitter suitable for this remote control device. When determining whether or not the ID code and the change code on the transmitter side and the ID code and the change code on the receiver side during a normal operation in which control is performed on a controllable mechanism having a high security function. And
A decision is made on the basis of the comparison result, while the control of the controllable mechanism, which may have a lower security function, is performed, or the reproduction transmission signal is transmitted from a plurality of other transmitters. In a special operation in which the ID code is supplied intensively in a short time, only the transmitter ID code and the receiver ID code are compared, and the determination is switched based on the comparison result. There is an effect that control of the mechanism can be executed in a state of being flexible.

Further, according to the present invention, it is possible to cope with the case where the storage capacity of the memory of the receiver is not extremely large, so that a cheaper remote control device can be obtained and the processing speed can be reduced. There is an effect that a small number of remote control devices can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a transmitter side in a configuration of an embodiment of a remote control device according to the present invention.

FIG. 2 is a block diagram showing a partial configuration of a receiver and a controllable mechanism in the configuration of an embodiment of a remote control device according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 transmitter (portable transmitter) 2 receiver (installed receiver) 3 controllable mechanism (car door) 4 operation button 5 first change code storage unit 6 first change code generation unit 7 first ID code storage unit Reference Signs List 8 control code generation section 9 transmission signal formation section 10 transmission section 11 transmission antenna 12 reception section 13 second ID code storage section 14 second change code storage section 15 second change code generation section 16 control code storage section 17 signal processing section Reference Signs List 18 ID code comparison unit 19 Change code comparison unit 20 Control signal generation unit 21 Change code comparison stop unit 22 Function change switch 23 Transmission signal determination unit 24 Receiving antenna

Claims (2)

[Claims] 1. A system comprising: one or more transmitters; and one or more receivers installed in a controllable mechanism, the transmitter comprising: a first ID code storage unit for storing a predetermined first ID code; A first change code generating unit that generates a first change code that is changed in accordance with a predetermined rule each time transmission is performed, and a control code storage unit that stores a control code that causes the controllable mechanism to execute predetermined control. A transmission unit that transmits a transmission signal including the first ID code, the first change code, the control code, and the like, wherein the receiver receives the transmission signal and generates a reproduction transmission signal; Second
A second ID code storage unit that stores an ID code, a second change code generation unit that generates a second change code that is changed according to a predetermined rule each time the first ID code is received,
An ID code comparing unit that compares a first ID code in the reproduced transmission signal with a second ID code stored in the second ID code storage unit each time the RF signal is received;
A change code comparison unit that compares a first change code in the reproduction transmission signal with a second change code obtained by the second change code generation unit; and a comparison between the ID code comparison unit and the change code comparison unit A control signal generating unit for generating a control signal based on a control code in the reproduction transmission signal when a result is within a predetermined reference value, performing a predetermined operation or setting a predetermined condition; Only when
A remote control device, comprising: a change code comparison stop unit that generates a control signal from the control signal generation unit if the comparison result of the ID code comparison unit is within a preset reference value. 2. The remote control device according to claim 1, wherein the predetermined operation in the change code comparison stop unit is an operation of a function change switch provided in the receiver.