JP2892168B2 - Identification system for remote drive units of automobile parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control system for a vehicle which is provided with a transmitter and a receiver associated with specific identification information, for example, for wirelessly unlocking a door of a vehicle.
The present invention relates to an identification system for a driving device .

[0002]

BACKGROUND ART Conventionally, unlocking system and the like to perform the locking and unlocking of an automatic vehicle door have been proposed by the radio waves. What is common to this type of system is that there is a specific transmitting device and a specific receiving device, and the specific transmitting device transmits identification information , and the receiving device transmits the identification information and its own identification information. Is compared. As a result of the comparison, if the two pieces of identification information match, each unit on the receiving device side is operated.

[0003]

However, in the above-mentioned conventional system, the identification information itself to be compared is transmitted. Therefore, if another person intends to steal the identification information, the problem that the identification information can be decrypted relatively easily remains unsolved. On the other hand, encryption may be performed according to a certain rule, but even in this case, the original identification information is easily deciphered from the regularity. Therefore, the present invention provides a highly safe remote control for each part of a vehicle in which identification information is not easily stolen and decoded.
An object of the present invention is to provide an identification system for a moving device .

[0004]

According to an aspect of the present invention, there is provided a communication system comprising: a specific transmitting apparatus and a specific receiving apparatus;
Are in one-to-one correspondence via the same identification information
Identification information in the identification system of the remote drive of each part of the vehicle
Consists of rolling data and fixed data.
Stores identification information corresponding to a specific receiving device.
The transmitting side storage means and the stored identification information are read.
And perform arithmetic processing only on the rolling data.
Operation processing means, and the rolling data is subjected to operation processing.
Information of the number of operations and drive information
Transmission information creating means for adding transmission information to the transmission information,
Transmission means for transmitting transmission information is provided;
The receiving device receives the transmission information transmitted from the transmitting device.
Receiving means and identification information corresponding to a specific transmitting device.
The receiving side storage means and the information included in the received transmission information
The identification information of the transmission information based on the information
The rolling data that has been subjected to arithmetic processing is
Identification information restoring means for restoring to ring data;
Information and receiver storage means from which
Identification information corresponding to the specific transmitting device stored in the
Be characterized by comparing means for comparing is eclipsed set
It is those that.

[0005]

The operation of the present invention having the above configuration will be described. When identification information consisting of rolling data and fixed data is transmitted , the
Performs only arithmetic processing. Then, this processed row
Identification information including a ring data, count information arithmetic processing,及
And after transmitting drive information and the like as transmission information. On the other hand, the receiving device decodes the received coded transmission information and, based on the information on the number of times of the arithmetic processing included in the transmission information, restores the original data before the arithmetic processing.
The rolling data is restored, and thus the entire identification information is restored. In this way, the identification information is not easily stolen.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 to FIG. 3 show remote driving of each part of an automobile as an embodiment.
Shows the structure of a vehicle unlocking system using the identification system of the apparatus transmitting, FIG. 1 is a block diagram showing the configuration of a transmitting apparatus as an embodiment, FIG. 2 is transmitted from the transmitting apparatus shown in FIG. 1 FIG. 3 is an explanatory diagram showing the contents of the information, and FIG. 3 is a block diagram showing the configuration of the receiving device. Transmitting device 2 shown in FIG.
A control unit 10 mainly includes a CPU, a main memory, and the like, which serve as a control center of the apparatus.
In the generated signal, for example by FM modulating the transmitter 11 as a transmitting means for sending a radio wave of the UHF band, an input section 12 for inputting the transmission timing of the transmission information from the transmission unit 11, the above-identified CPU And a memory 13 such as a ROM as storage means for storing identification information and the like common to the present transmitting device and a receiving device which will be described in detail later. ing. Reference numeral 11a is a transmitting antenna. Further, the memory 13 may be configured by a RAM or the like in which stored information can be rewritten.

The control unit 10 performs an arithmetic processing unit 10a for performing an arithmetic operation only on rolling data in the identification information read from the memory 13, based on an application program for performing a specific arithmetic operation stored in the memory 13. And a function as transmission information creating means 10b which adds the information on the number of times of operation to the identification information after the operation and makes it transmission information. The specific configuration of the transmission information sent from the transmission device has the contents shown in FIG.

The transmission information 14 shown in FIG. 1 is coded data in which one transmission information has a 32-bit length. The upper 8 bits of the transmission information 14 are the rolling data 14.
a, fixed data 14 in which the next 12 bits are fixed
b, the drive information 14c corresponding to those of the unlocking device following 4 bits are provided with a receiving device to be described later, shown to arithmetic processing count the number of calculation steps applied to the next 8-bit rolling data 14a The information 14d and the last four bits are checksum data 14e serving as data for determining whether or not the transmission information has been correctly received. Of these, the most significant 20 bits are identification information. That is, in the present embodiment, the identification information is composed of 20 bits consisting of the rolling data 14a and the fixed data 14b, and the upper 8 bits (rolling data 14a) are data areas whose contents change every transmission. I have. The change of the rolling data 14a sequentially changes according to the arithmetic processing executed by the arithmetic processing means 10a and the number of the arithmetic processing based on an application program for executing the specific arithmetic processing stored in the memory 13.

Next, a description will be given mainly of the receiving apparatus with reference to FIG. The receiving device 15 shown in FIG.
a receiver 16 as a receiving means for demodulating the transmission information received from a, a control unit 17 that is configured around a CPU, a main memory, which is a control center of the apparatus, the identification information and the control unit of the device And a memory 18 and the like in which an application program for performing a specific function and an inverse operation processing program of the operation stored in the memory 13 of the transmission device are stored. The unlocked device provided with such a receiving device 15 is a lock (a door key or a trunk room key of an automobile) 20 connected at a later stage.
And an unlocking drive unit 19 for locking and unlocking the lock.

[0010] The control unit 17 calculates the number of arithmetic processing times contained in the received transmission information 14 based on a specific application program stored in the memory 18.
14d , the rolling data before the arithmetic processing
Identification information restoring means 17a for restoring 14a , memory 18
Has a function as comparing means 17b for comparing the identification information unique to the receiving device 15 stored in the storage device with the identification information including the restored rolling data 14a .
The control unit 17 has a function of transmitting an unlocking signal to the locking / unlocking drive unit 19 when the two match as a result of the comparison. The identification information restoring unit 17a includes:
Of the transmission information 14 shown in FIG. 2, and b <br/> over ring data 14a included in the identification information obtains the calculation processing number information 14d, only the number of calculation steps, rolling data 14
The inverse operation processing is performed on a. That is, in this embodiment, the original identification information is restored by performing the inverse operation process on the rolling data 14a the number of times the operation process has been performed.

The operation of the identification information transmitting / receiving system provided with the transmitting / receiving device having the above configuration will be described with reference to FIGS. FIG. 4 is a flowchart showing the operation on the transmitting device side, and FIG. 5 is a flowchart showing the operation on the receiving device side. First, the operation of the transmitting apparatus will be described with reference to FIG. In step 1 (abbreviated as S1 in the figure, the same applies hereinafter), it is determined whether or not the input unit 12 has been operated. If the operation is performed, step 2
Proceed to. In step 2, the rolling data 14a and
The identification information including the fixed data 14b is read from the memory 13, and the process proceeds to step S3. In step 3, the last for the rolling data 14a of the read identification information
The number of computations added at the time of transmission is read from the memory 13 and incremented by one. Then, the process proceeds to Step 4. In step 4, the incremented number of times of arithmetic processing 14d is added to a predetermined position of the transmission information to be transmitted , and the incremented number of times of arithmetic processing is added to the information.
The report 14d is written back to the memory 13. In step 5, the checksum is calculated and the process proceeds to step 6, where the checksum data 14e is added to a predetermined position of the transmission information. In Step 7, the rolling data 14a of the read identification information is read by the incremented number of arithmetic processing.
Perform specific processing with respect. This processing result is now
It becomes rolling data 14a at the time of transmission . In step 8, the identification information including the rolling data 14a
The information is added to a predetermined position of the information to be transmitted. Then, it proceeds to step 9. In step 9, the transmission information is modulated and transmitted according to a preset transmission procedure.

Next, the operation of the receiving apparatus will be described with reference to FIG. In step 1, it is determined whether transmission information has been received. Here, if the reception is confirmed, the process proceeds to step 2. In step 2, a predetermined demodulation process is performed, and the process proceeds to step 3. In step 3, a checksum is calculated separately from the checksum data 14e included in the transmission information, and the process proceeds to step 4. In step 4, the checksum data included in the transmission information is compared with the checksum data calculated in step 3. Then, the process proceeds to step 5. In step 5, it is determined whether or not both checksum data match, and if they match, the process proceeds to step 6;
Return to In step 6, the rolling data 14a is played.
Perform inverse operation by the number of times of calculation processing information 14d.
And decodes the identification information, and proceeds to step 7. In step 7, the decoded identification information and the memory 18
Is compared with the identification information unique to the receiving device read out from the receiving device. Then, the process proceeds to Step 8. In step 8, if the comparison results match, the process proceeds to step 9, and if they do not match, the process returns to step 1. In step 9, a predetermined unlocking operation is performed. This unlocking operation is determined by the contents of the drive information 14c included in the received information. Therefore, the input unit 12 is provided with a switch corresponding to each part of the vehicle to be driven, and drive information (for example, door lock / unlock, window open / close, trunk lock / unlock information, etc.) corresponding to this switch is stored in a memory or the like in advance. When the switch of the input unit 12 is selectively operated, the operation of each part of the vehicle can be performed in a separated state.

The knowledge of the remote drive of each part of the automobile described in detail above
If another system, without transmitting the identification information itself, because of the transmission by processing the portion of data (rolling data) of that <br/>, even when attempting to steal the others , Its decryption is extremely difficult. Moreover, identification information of that is different for each count operation processing, it is possible to significantly improve the security.

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made within the scope of the invention . In the receiving device, the received information (load
Data is inversely calculated according to the number of calculations to obtain the identification information. In the receiving apparatus, the identification information stored therein is calculated by the number of times based on the number of calculations of the transmission information. Information and received information (rolling data)
And may be compared.

[0015]

According to the present invention described in detail above, identification information is not easily stolen and decrypted, thereby providing a highly secure automatic
It is possible to provide an identification system for a remote drive device of each part of a vehicle .

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a transmission device as one embodiment.

FIG. 2 is an explanatory diagram showing contents of transmission information transmitted from the transmission device shown in FIG.

FIG. 3 is a block diagram showing a configuration of a receiving device.

FIG. 4 is a flowchart showing an operation on the transmission device side.

FIG. 5 is a flowchart showing the operation on the receiving device side.

[Explanation of symbols]

 14 transmission information 10a arithmetic processing means 10b transmission information creation means 17a identification information restoration means 17b comparison means

Claims (1)

(57) [Claims] A specific transmitting device and a specific receiving device are the same.
Each car that has a one-to-one correspondence via one piece of identification information
In an identification system for a remote drive, identification information consists of rolling data and fixed data.
The transmitting device records identification information corresponding to the specific receiving device.
The transmitting side storage means and the stored identification information
Is read, and the arithmetic processing is performed only on the rolling data.
Calculation processing means for performing the
Information on the number of times of the arithmetic processing and driving are added to the processed identification information.
Transmission information creation means that adds information etc. and makes it transmission information
And transmission means for transmitting this transmission information are provided.
The receiving device receives the transmission information transmitted from the transmitting device.
Receiving means to be processed and identification information corresponding to a particular transmitting device
Receiving means for storing the transmission information,
Identification information of transmission information based on the
Rolling data that has been processed in the report
Identification information restoring means for restoring to rolling data of
This rolling data is restored with the identification information and
Identification corresponding to a particular transmitting device stored in storage means
Note that a comparison means for comparing with information is provided.
Identification system for remote drive units of automobile parts