JPS62101777A - Electronic key apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an electronic key device that locks (LOCK) and unlocks (UNLOCK) the doors of automobiles etc. by remote control. The present invention relates to an electronic key device that uses a fingerprint.

(Prior Art) Generally, doors in automobiles and the like are locked and unlocked by inserting a key carried by the driver into a keyhole and mechanically rotating the key. However, according to this, it is necessary to insert the key into the keyhole each time, which is troublesome, and it is also inconvenient that it is not easy to handle in a dark place.

Therefore, an electronic key device has been proposed that allows doors to be locked and unlocked by remote control. This device transmits predetermined key code data from a portable transmitter (remote control key) to the receiver side, and the receiver side receives the transmitted key code data and confirms that it matches its own key code. In this case, the device is configured to operate an IJJ device for locking or unlocking the door.

(Problems to be Solved by the Invention) Conventionally, in an electronic key device having such a configuration, if another person knows the key code transmitted from the transmission stage, he or she can operate the key without the owner's permission. The possibility arises,
There was a problem in preventing theft.

The present invention has been made in view of these problems, and its purpose is to realize an electronic key device with extremely high anti-theft performance by changing the key using a fingerprint.

(Means for Solving the Problems) The present invention that solves the above-mentioned problems includes a fingerprint analysis means for extracting feature points of a fingerprint and outputting key code data according to a combination of the feature points, and a transmitter comprising a transmitting means for transmitting key code data from the analyzing means; a fingerprint registration means for outputting key code data according to a combination V of fingerprint minutiae registered in advance; and a key sent from the transmitter. The device is characterized by comprising a receiver that receives code data and locks or unlocks the door when the key code data matches the key code data from the fingerprint registration means. be.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a configuration block diagram showing an example of a device according to the present invention, and FIG. 2 is a conceptual diagram showing an example of application of the present invention, in which the device is used in an automobile.

In these figures, 1 is a transmitter (remote control key), and 2 is a receiver.The receiver 2 is attached to an outer handle 5 of a driver's door 4 in an automobile 3, as shown in FIG.
It is located nearby.

In the transmitter 1, 6 is a microcomputer, and 7 is a fingerprint analysis device that detects the minutiae of a fingerprint placed on the fingerprint detection window 70 and provides the microcomputer 6 with key code data created by the combination of the minutiae points of the fingerprint. means, 8
9 is a transmitting amplifier controlled by the microcomputer 6, and 9 is a light emitting element driven by the transmitting amplifier 8 to emit, for example, an optical signal carrying a data signal.

In the receiver 2, 10 is a light receiving element that receives the optical signal transmitted from the transmitter 1, 11 is a receiving amplifier that amplifies the signal from this light receiving element, 12 is a microcomputer that inputs the signal from the receiving amplifier 11, 13 is a fingerprint registration means for providing key code data corresponding to the fingerprint minutiae registered in advance in the microcomputer 12; 14 is a power relay unit for inputting control signals from the microcomputer 12; 15.16 is this power relay unit 14. A lock actuator and an unlock actuator are driven by signals from the door 4, and the door 4 is locked and unlocked by these actuators.

FIG. 3 is a structural diagram showing an example of the fingerprint analysis means 6 similar to that shown in FIG. A light source 72 is an image sensor that receives a fingerprint pattern generated due to the difference in reflectance due to the fingerprint of a finger placed on the fingerprint detection window 70, such as a CCD or BBD.
is used. 73 is a fingerprint pattern analysis means that inputs the signal from the image sensor 72; for example, a microcomputer is used;
Feature points such as the number of stripes and the way the stripes flow are extracted, a key code is created by a combination of these feature points, and this key code data is sent to the microcomputer 6.

The operation of the apparatus configured as described above will be explained as follows. First, the owner of the electronic key device enters his or her thumb or index finger fingerprint into the fingerprint registration means 1 on the receiver 2 side.
Register for 3. In this registration procedure, in the receiver 2, the microcomputer 12 is set to a registration mode by means such as a switch (not shown), and in this state, on the transmitter 1 side, the owner inputs his/her fingerprint to be registered. This is done by placing the key code on the fingerprint detection window 70 and transmitting the key code data created by the fingerprint pattern analysis means 74 to the receiver 2 side. In this registration mode, the receiver 2 registers the transmitted key code data on the fingerprint registration means 13 side. After completing such a registration procedure, the receiver 2 cancels the registration mode and enters the normal reception mode. In this reception mode, the microcomputer 12 of the receiver 2:
It is determined 711 whether the key code data transmitted from the transmitter 1 side matches the key code data registered in advance in the registration mode, and if they match, the lock or unlock actuator 15 or 16 is driven.

In the above explanation, it was assumed that a finger is placed on the fingerprint detection window 70 on the transmitter 1 side, the characteristics of the fingerprint are detected each time, and key code data is transmitted. A fingerprint pattern formed by pressing a fingerprint in advance may be placed on the window 7o. In addition, in the registration mode, the fingerprint registration means 13 on the receiver 2 side has a transmission 1fi
Although it has been explained that the key code data corresponding to the fingerprint pattern sent from the receiver 1 side is stored, a fingerprint pattern analysis means is also provided on the receiver 2 side, and the key code data based on the result of analysis is stored in the receiver 2 side. It may also be stored in the registration means 13.

(Effects of the Invention) As explained above, the present invention is configured to analyze the unique fingerprint of each person and create key code data based on KJ matching of the minutiae of the fingerprint. According to the present invention, an electronic key body with extremely high anti-theft properties can be realized.

[Brief explanation of drawings]

FIG. 1 is a configuration block diagram showing one embodiment of the present invention, and FIG.
The figure is a conceptual diagram showing an example of application of the present invention, and FIG. 3 is a main part configuration diagram showing an example of a fingerprint analysis means. 1... Transmitter 2... Receiver 6.12.
...Microcomputer 7...Fingerprint analysis means 8...Transmission amplifier 11...Reception amplifier 13
...Fingerprint registration method patent applicant: Shiraki Metal Industry Co., Ltd. Representative: Patent attorney: Fuji Ijima, 1 person

Claims (1)

[Claims] A transmitter comprising a fingerprint analysis means for extracting minutiae points of a fingerprint and outputting key code data according to a combination of the minutiae points, and a transmission means for transmitting the key code data from the fingerprint analysis means, which is registered in advance. a fingerprint registration unit that outputs key code data according to a combination of fingerprint minutiae; and a fingerprint registration unit that receives key code data sent from the transmitter, and the key code data matches the key code data from the fingerprint registration unit. An electronic key device equipped with a receiver that locks or unlocks the door when the key is activated.