Electronic key device for performing digital key function on basis of biometric information and vehicle digital key of electronic key device, and method for performing digital key function of electronic key device

Abstract

The present invention relates to a method by which a vehicle performs a digital key function by using an electronic key device having a digital key of the vehicle, the method comprising: a sensing step of sensing at least one piece of first biometric information; a storage step of storing the sensed first biometric information; a transmission step of transmitting the stored first biometric information to the electronic key device; and a reception step of receiving digital key function execution information from the electronic key device, wherein the digital key function execution information is information for activating a wireless communication module unit of the vehicle on the basis of the first biometric information received by the electronic key device from the vehicle.

Description

Electronic key device performing digital key function based on biometric information and vehicle digital key of electronic key device and method for performing digital key function of electronic key device

[0001] The present invention relates to an electronic key device that performs a digital key function based on biometric information and a vehicle digital key of the electronic key device, and a method for performing the digital key function of the electronic key device.

[0002] In modern society, digital vehicle keys are widely used due to their convenience, allowing users to control various locks with a single device, eliminating the need to carry multiple physical keys. Furthermore, contactless technologies like Near Field Communication (NFC), Bluetooth, and Ultra-Wide Band (UWB) are being incorporated into digital keys, enabling users to access the device without removing it from their pockets or bags, establishing them as a crucial technology that offers both convenience and security. However, despite the convenience of digital keys, there still remains a preference for a separate product, the electronic key device, or key fob.

[0003] However, key fobs are small and easily lost or stolen, and pose security risks such as relay attacks. Relay attacks exploit security vulnerabilities in wireless communication-based systems like smart keys. They pose a serious security threat to both vehicle users and manufacturers, making the introduction of enhanced security technologies crucial to prevent them.

[0004] The present invention aims to prevent key loss and relay attacks by introducing a user authentication system and UWB wireless communication technology to an electronic key fob.

[0005] The present invention relates to a method for performing a digital key function of a vehicle using an electronic key device having a digital key of the vehicle, comprising: a sensing step in which the vehicle senses at least one first biometric information; a storing step in which the vehicle stores the sensed first biometric information; a transmitting step in which the vehicle transmits the stored first biometric information to the electronic key device; and a receiving step in which the vehicle receives digital key function performance information from the electronic key device; wherein the digital key function performance information is information for activating a wireless communication module of the vehicle based on the first biometric information received by the electronic key device from the vehicle.

[0006] In addition, the at least one first biometric information includes different first-first biometric information and first-second biometric information, the sensing step senses the different first-first biometric information and first-second biometric information, and the storing step stores the sensed different first-first biometric information and first-second biometric information.

[0007] In addition, the at least one first biometric information is at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information.

[0008] In addition, the digital key function execution information is information for executing the function of the digital key based on any one of an NFC module, a BLE module, and a UWB module included in the wireless communication module of the vehicle or the wireless communication module of the electronic key device.

[0009] The present invention relates to a vehicle in which a digital key function is performed using an electronic key device having a digital key of the vehicle, the vehicle comprising: a biometric information sensor unit; a wireless communication module unit communicating with the electronic key device; and a memory unit; wherein the biometric information sensor unit senses at least one or more first biometric information, the memory unit stores the sensed at least one or more first biometric information, the wireless communication module unit transmits the stored at least one or more first biometric information to the electronic key device, and the wireless communication module unit receives digital key function execution information, which is information for activating the digital key function of the wireless communication module unit based on the transmitted at least one or more first biometric information, from the electronic key device.

[0010] In addition, the at least one first biometric information includes different 1-1 biometric information and 1-2 biometric information, the biometric information sensor unit senses the different 1-1 biometric information and 1-2 biometric information, and the memory unit stores the different 1-1 biometric information and 1-2 biometric information.

[0011] In addition, the at least one first biometric information is at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information.

[0012] In addition, the digital key function execution information is information for executing the function of the digital key based on any one of the NFC module, BLE module, and UWB module included in the wireless communication module unit or the wireless communication module unit of the electronic key device.

[0013] The present invention relates to a method for performing a digital key function of an electronic key device, wherein the electronic key device performs a digital key function based on at least one first biometric information and a vehicle digital key of the electronic key device, the method comprising: a receiving step in which the electronic key device receives the at least one first biometric information from the vehicle or a user device; a user authentication step in which the electronic key device performs user authentication based on the received first biometric information; and an activation step in which the electronic key device activates the digital key function based on the performed user authentication.

[0014] In addition, the user authentication step includes a step of sensing at least one second biometric information; and a step of comparing whether the second biometric information matches the first biometric information; and if the second biometric information matches the first biometric information in the user authentication step, the activation step is performed.

[0015] In addition, the first biometric information and the second biometric information are at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information.

[0016] Additionally, the at least one first biometric information includes different first-first biometric information and different first-second biometric information, and the at least one second biometric information includes different second-first biometric information and different second-second biometric information.

[0017] The present invention relates to an electronic key device that performs a digital key function based on at least one or more first biometric information and a vehicle digital key that the electronic key device has, the electronic key device comprising: a biometric information sensor unit; a wireless communication module unit that communicates with the vehicle or the user device; a memory unit; and a processor unit; wherein the wireless communication module unit includes any one of an NFC module, a BLE module, and a UWB module, the wireless communication module unit receives the at least one or more first biometric information from the vehicle or the user device, the memory unit stores the received first biometric information, and the processor unit activates the digital key function of the wireless communication module unit based on the stored first biometric information.

[0018] In addition, the biometric information sensor unit is configured to sense at least one second biometric information, and the processor unit is configured to compare whether the second biometric information matches the first biometric information, and if the second biometric information matches the first biometric information, the processor unit is configured to activate the digital key function of the wireless communication module unit.

[0019] In addition, the first biometric information and the second biometric information are at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information.

[0020] In addition, the at least one first biometric information includes different 1-1 biometric information and 1-2 biometric information, the biometric information recognition sensor unit recognizes at least one second biometric information, and the at least one second biometric information includes different 2-1 biometric information and 2-2 biometric information.

[0021] The present invention can solve vehicle theft by deleting authority for the key when the electronic key device is lost.

[0022] The present invention can prevent relay attacks by applying Bluetooth and UWB systems.

[0023] The present invention can enhance security by adding a user authentication means to an electronic key device.

[0024] The present invention can increase user convenience by allowing multiple users to access their vehicles with one electronic key device.

[0025] Figure 1 is a drawing for explaining an existing communication system between an electronic key device and a vehicle.

[0026] Figure 2a is a drawing for explaining the configuration of an electronic key device according to the present invention.

[0027] Figure 2b is a drawing for explaining the configuration of a vehicle according to the present invention.

[0028] FIG. 3 is a drawing for explaining a method in which an electronic key device performs a digital key function when there are two users of a vehicle according to the present invention.

[0029] FIG. 4 is a drawing for explaining a method in which an electronic key device performs a digital key function when two vehicles according to the present invention use a user terminal.

[0030] FIG. 5 is a drawing for explaining the access rights of a first user when an electronic key device according to the present invention manages registration of digital keys for multiple users and multiple vehicles.

[0031] Specific details of the embodiments are included in the detailed description and drawings.

[0032] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals designate like elements throughout the specification.

[0033] Typically, when a user wishes to remotely control a desired control target device, the user can operate the device using a separate wireless control device, utilizing a communication module built into the control target device. For example, if the control target device is a vehicle, the user can remotely operate the vehicle using a separate wireless control device (smart key) utilizing a communication module built into the vehicle. In this manner, the user can lock or unlock the vehicle doors and operate the vehicle doors.

[0034] Existing system

[0035] Figure 1 is a drawing for explaining an existing communication system between an electronic key device and a vehicle.

[0036] As illustrated in FIG. 1, in the case of an existing system for communication between a vehicle (200) and an electronic key device (100), a user can control the vehicle (200) using the electronic key device (100). Specifically, a user can lock or unlock the doors of the vehicle (200) by pressing a button on the electronic key device (100). In addition, the electronic key device (100) can provide a remote start function, and by using this function, a user can start the engine without getting into the vehicle (200). In addition, the electronic key device (100) can provide a function such as remotely opening the trunk of the vehicle (200) through a trunk open button on the electronic key device (100).

[0037] According to the present invention, in the case of the existing system for communication between a vehicle (200) and an electronic key device (100), the electronic key device (100) may be vulnerable to a relay attack. For example, one relay device may capture a wireless signal from the electronic key device (100) and transmit the signal to another relay device. Accordingly, the other relay device may relay the received signal to the vehicle (200), so that the vehicle (200) may recognize the relayed signal as a signal from the electronic key device (100). Therefore, in the case of the existing system for communication between the vehicle (200) and the electronic key device (100), there is a problem of vulnerability in security, such as being able to unlock the doors of the vehicle (200) and start the engine.

[0038] According to the present invention, in the case of the existing system for communication between a vehicle (200) and an electronic key device (100), the electronic key device (100) communicates with the vehicle (200) using radio frequency (RF) signals, so that the signals can be easily captured and transmitted by a relay device. In addition, since communication between the vehicle (200) and the electronic key device (100) is performed in real time, signals can be transmitted without time delay, which poses a problem of greater vulnerability to security.

[0039] Electronic key device configuration

[0040] Figure 2a is a drawing for explaining the configuration of an electronic key device according to the present invention.

[0041] As illustrated in FIG. 2A, an electronic key device (100) according to the present invention may include a biometric information sensor unit (110), a wireless communication module unit (120), a memory unit (130), and a processor unit (140). Specifically, the wireless communication module unit (120) of the electronic key device (100) according to the present invention may include an NFC module (121), a BLE module (122), and a UWB module (123).

[0042] According to the present invention, the electronic key device (100) may include a biometric information sensor unit (110). For example, if the biometric information of the user to be recognized is the user's fingerprint information, the biometric information sensor unit (110) may scan the user's fingerprint. Alternatively, if the biometric information of the user to be recognized is the user's iris information, the biometric information sensor unit (110) may scan the user's iris.

[0043] According to the present invention, the biometric information sensor unit (110) can sense at least one second biometric information. Specifically, the second biometric information may be information that the user recognizes a part of his or her body to the electronic key device (100) for user authentication when the user of the electronic key device (100) activates the digital key function of the electronic key device (100) to use the vehicle (200). For a specific example, when the biometric information sensed by the biometric information sensor unit (110) is the user's fingerprint information, the user may contact the biometric information sensor unit (110) with the fingerprint portion of his or her finger, and accordingly, when the biometric information sensor unit (110) recognizes the user's fingerprint, the recognized fingerprint information at this time may become the second biometric information.

[0044] According to the present invention, the electronic key device (100) may include a processor unit (140). For example, if the biometric information of a user to be recognized is user fingerprint recognition information, the biometric information sensor unit (110) may scan the user's fingerprint, and the processor unit (140) may compare the first biometric information stored in the memory unit (130) of the electronic key device (100) with the user fingerprint recognition information scanned by the biometric information sensor unit (110). If the first biometric information stored in the memory unit (130) of the electronic key device (100) matches the user fingerprint recognition information, which is the second biometric information scanned by the biometric information sensor unit (110), the user may be recognized as a user with access authority. Accordingly, the processor unit (140) may activate the digital key function of the wireless communication module unit (120) based on the first biometric information stored in the memory unit (130).

[0045] According to the present invention, existing electronic key devices have a risk of unauthorized use when lost or stolen, but the electronic key device (100) according to the present invention may include a biometric information sensor unit (110), so that when lost or stolen, fingerprint information of a third party other than the user may not match the stored user fingerprint recognition information, and thus the electronic key device (100) may not be activated. Therefore, the electronic key device (100) according to the present invention has the effect of strengthening security compared to existing electronic key devices. A user authentication method using the biometric information sensor unit (110) will be described later.

[0046] As illustrated in FIG. 2A, the electronic key device (100) according to the present invention may include an NFC module (121, Near Field Communication). Specifically, the NFC module (121) enables contactless authentication between the vehicle (200) and the electronic key device (100) within a distance of about 10 cm, which may be used to perform functions such as door unlocking and starting of the vehicle (200). In addition, since the NFC module (121) may support two-way communication, it may enable data exchange between the electronic key device (100) and the vehicle (200). In addition, for NFC communication, the electronic key device (100) must be positioned close to the vehicle NFC reader, which may have the effect of enhancing security by making unauthorized access difficult.

[0047] As illustrated in FIG. 2A, the electronic key device (100) according to the present invention may include a BLE module (122). Specifically, the electronic key device (100) may remotely lock or unlock the doors of a vehicle (200) within a certain distance using the BLE module (122). It may provide a signal that is more stable and has a wider range than the radio frequency (RF) signal of an existing electronic key device, and since the BLE module (122) supports two-way communication, data may be exchanged in real time between the vehicle (200) and the electronic key device (100).

[0048] As illustrated in FIG. 2A, the electronic key device (100) according to the present invention may include a UWB module (140, Ultra-Wide Band). Specifically, the electronic key device (100) can perform very accurate positioning within an error range of several tens of centimeters or less by using the UWB module (123), thereby determining the relative position between the vehicle (200) and the electronic key device (100). When a user approaches or moves away from the vehicle (200), the accurate position can be detected through the UWB signal to automatically lock or unlock the door, and time delay measurement can be used to determine whether the signal actually occurred near the vehicle (200), thereby effectively defending against relay attacks.

[0049] Vehicle configuration

[0050] Figure 2b is a drawing for explaining the configuration of a vehicle according to the present invention.

[0051] As illustrated in FIG. 2b, the vehicle (200) of the present invention may include a biometric information sensor unit (210), a wireless communication module unit (220), and a memory unit (230). Specifically, the wireless communication module unit (220) may include an NFC module (221), a BLE module (222), and a UWB module (223).

[0052] According to one embodiment of the present invention, the vehicle (200) may include a biometric information sensor unit (210). Specifically, the biometric information sensor unit (210) may sense at least one first biometric information. As illustrated in FIG. 3, in an embodiment where two or more users exist in one vehicle (200), biometric information of each user may be sensed, and thus the biometric information sensor unit (210) may sense the first-first biometric information of the first user (310). In addition, the biometric information sensor unit (210) may sense the first-second biometric information of the second user (320). For a specific example, the biometric information sensor unit (210) of the vehicle (200) may be in the form of a display of the vehicle (200), but is not limited thereto.

[0053] According to one embodiment of the present invention, the biometric information sensor unit (210) can sense first biometric information, and the first biometric information can be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information. For a specific example, the first biometric information can be composed of only user fingerprint recognition information, but for even stronger security, the first biometric information can be a combination of user fingerprint recognition information and user iris recognition information.

[0054] According to one embodiment of the present invention, the vehicle (200) may include a memory unit (230). The biometric information sensor unit (210) may sense the first-first biometric information of the first user (310). In addition, the biometric information sensor unit (210) may sense the first-second biometric information of the second user (320). In this case, the memory unit (230) of the vehicle (200) may store the first-first biometric information of the first user (310) and the first-second biometric information of the second user (320).

[0055] According to one embodiment of the present invention, the vehicle (200) may include a wireless communication module unit (220). The wireless communication module unit (220) may transmit the first-first biometric information of the first user (310) and the first-second biometric information of the second user (320) stored in the memory unit (230) of the vehicle (200) to the electronic key device (100). In addition, the wireless communication module unit (220) may transmit digital key function execution information, which is information for activating the digital key function of the wireless communication module unit (220), from the electronic key device (100) based on the transmitted first biometric information.

[0056] According to one embodiment of the present invention, the digital key function execution information, which is information for activating the digital key function of the wireless communication module unit (220), may be information for performing the function of the digital key based on any one of the NFC module (121, 221), BLE module (122, 222), and UWB module (123, 223) included in the wireless communication module unit (220) or the wireless communication module unit (120) of the electronic key device (100).

[0057] FIG. 3 is a drawing for explaining a method in which an electronic key device performs a digital key function when there are two users of a vehicle according to the present invention.

[0058] If there are two or more users of the vehicle (200)

[0059] As shown in FIG. 3, there are cases where there are two or more users of a vehicle (200), so for the sake of distinction, they are expressed as a first user (310) and a second user (320).

[0060] Digital key generation step (S10)

[0061] According to the present invention, a method for performing a digital key function of an electronic key device may include a step (S10) of generating a digital key of a vehicle (200) in the electronic key device (100). For example, the step (S10) of generating a digital key of a vehicle (200) in the electronic key device (100) may include a step of generating a digital key of the vehicle (200) in the electronic key device (100) when the electronic key device (100) is generated at a vehicle OEM factory. Even more specifically, the digital key structure of the electronic key device (100) may include a confidential mailbox, and an immobilizer token of the vehicle (200) may be stored in the confidential mailbox of the electronic key device (100).

[0062] According to the present invention, since the immobilizer token is important authentication information for starting the vehicle (200), the immobilizer system of the vehicle (200) may block the engine if the immobilizer token is not present. Accordingly, the electronic key device (100) in which the immobilizer token of the vehicle (200) is safely stored can perform the same function as a physical key. Since the immobilizer token stored in the confidential mailbox is highly secure, unauthorized duplication or hacking of the electronic key device (100) can also be prevented.

[0063] 1-1 Biometric Information Registration (S20)

[0064] According to the present invention, a first user (310) can register 1-1 biometric information in a vehicle (200). Specifically, when the biometric information sensor unit (210) senses biometric information of the first user (310), the memory unit (230) can store the sensed 1-1 biometric information, and through this process, the 1-1 biometric information can be registered in the vehicle (200). For a specific example, the 1-1 biometric information can be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information. In other words, the 1-1 biometric information can be a single piece of information, such as user fingerprint recognition information, but can also be biometric information in which multiple pieces of information are combined for stronger security, such as a combination of user fingerprint recognition information and user iris recognition information.

[0065] According to one embodiment of the present invention, the first user (310) can sense biometric information through the display of the vehicle (200), a fingerprint sensor other than the display of the vehicle (200), etc. The fingerprint sensor may be located in the central gear box of the vehicle (200), or the fingerprint sensor may be located in the vehicle cluster, but is not limited thereto.

[0066] According to one embodiment of the present invention, when a first user (310) recognizes his / her fingerprint through the display of the vehicle (200), the memory unit of the vehicle (200) can store the user's biometric information.

[0067] 1-2 Biometric Information Registration (S30)

[0068] According to the present invention, the second user (320) can register the first and second biometric information in the vehicle (200). Specifically, when the biometric information sensor unit (210) senses the biometric information of the second user (320), the memory unit (230) can store the sensed first and second biometric information, and through this process, the first and second biometric information can be registered in the vehicle (200). For a specific example, the first and second biometric information can be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information. In other words, the first and second biometric information can be a single piece of information, such as user fingerprint recognition information, but can also be biometric information in which multiple pieces of information are combined for stronger security, such as a combination of user fingerprint recognition information and user iris recognition information.

[0069] According to the present invention, the memory unit (230) can store two or more different biometric information. Accordingly, two or more different biometric information can be registered in the vehicle (200). For example, the memory unit (230) can store two or more different biometric information, namely, first-first biometric information and first-second biometric information. Accordingly, two or more different biometric information, namely, first-first biometric information and first-second biometric information, can be registered in the vehicle (200).

[0070] First biometric information transmission step (S40)

[0071] According to the present invention, the vehicle (200) can transmit first biometric information stored in the memory unit (230) of the vehicle (200) to the electronic key device (100). For example, transmission can be performed using a BLE (Bluetooth Low Energy) module (222), or transmission can be performed using an NFC module (223).

[0072] According to the present invention, the vehicle (200) can transmit the first biometric information stored in the memory unit (230) after performing a process such as image preprocessing, processing, or encryption. For example, if the first biometric information is user fingerprint recognition information, the captured fingerprint image can be preprocessed through processes such as noise removal and edge detection. Accordingly, the fingerprint image can be made clearer. In addition, when the BLE module (222) of the vehicle (200) is connected to the BLE module (122) of the electronic key device (100) to secure a stable data transmission channel, the encrypted first biometric information can be transmitted to the electronic key device (100) through the BLE channel. Accordingly, the electronic key device (100) can verify the received first biometric information and then store it in the memory unit (130) of the electronic key device (100), but the process of transmitting the first biometric information stored in the memory unit (230) to the electronic key device (100) is not limited thereto.

[0073] According to the present invention, the vehicle (200) can encrypt and transmit the first biometric information stored in the memory unit (230). Specifically, when the electronic key device (100) is brought near the NFC module (221) of the vehicle (200), NFC communication can be initiated, and the vehicle (200) can transmit the encrypted first biometric information to the electronic key device (100) through the NFC module (221). Accordingly, the electronic key device (100) can decrypt and verify the received first biometric information, and then store it in the memory unit (130) of the electronic key device (100).

[0074] Step 2-1 Biometric Information Sensing (S50)

[0075] According to the present invention, the electronic key device (100) includes a biometric information sensor unit (110), and the biometric information sensor unit (110) can sense second biometric information for determining whether a user has access authority to the electronic key device (100) and the vehicle (200) in order to perform a digital key function.

[0076] According to the present invention, the first biometric information may be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, and the second biometric information may be configured to be biometric information that matches the first biometric information. For example, if the first biometric information is user fingerprint recognition information, the second biometric information may also be user fingerprint recognition information, and if the first biometric information is a combination of user vein recognition information and user face recognition information, the second biometric information may also be configured as a combination of user vein recognition information and user face recognition information.

[0077] As illustrated, since the first user (310) has registered the 1-1 biometric information in the vehicle, the biometric information sensor unit (110) of the electronic key device (100) can sense the 2-1 biometric information that can be compared with the 1-1 biometric information registered in the vehicle.

[0078] Step 2-2 Biometric Information Sensing (S60)

[0079] According to the present invention, the electronic key device (100) includes a biometric information sensor unit (110), and the biometric information sensor unit (110) can sense second biometric information for determining whether a user has access authority to the electronic key device (100) and the vehicle (200) in order to perform a digital key function.

[0080] According to the present invention, the first biometric information may be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, and the second biometric information may be configured to be biometric information that matches the first biometric information. For example, if the first biometric information is user fingerprint recognition information, the second biometric information may also be user fingerprint recognition information, and if the first biometric information is a combination of user vein recognition information and user face recognition information, the second biometric information may also be configured as a combination of user vein recognition information and user face recognition information.

[0081] As illustrated, since the second user (320) has registered the 1-2 biometric information in the vehicle, the biometric information sensor unit (110) of the electronic key device (100) can sense the 2-2 biometric information that can be compared with the 1-2 biometric information registered in the vehicle.

[0082] User authentication and BLE, UWB activation step (S70)

[0083] According to the present invention, the electronic key device (100) may include a processor unit (140). Specifically, the processor unit (140) may activate the digital key function of the wireless communication module unit (120) based on first biometric information stored in the memory unit (130).

[0084] According to the present invention, the processor unit (140) can compare whether the first biometric information stored in the memory unit (130) matches the second biometric information sensed by the biometric information sensor unit (110). Specifically, if the processor unit (140) determines that the first biometric information stored in the memory unit (130) matches the second biometric information sensed by the biometric information sensor unit (110), the processor unit (140) can activate the digital key function of the wireless communication module unit (120).

[0085] Digital key function execution step (S80)

[0086] According to the present invention, when the processor unit (140) determines that the first biometric information stored in the memory unit (130) matches the second biometric information sensed by the biometric information sensor unit (110), it can be seen that user authentication has been performed, and accordingly, the electronic key device (100) can perform the function of a digital key for the vehicle (200).

[0087] According to one embodiment of the present invention, when user authentication is performed, the electronic key device (100) can activate the digital key function of the wireless communication module unit (120), and accordingly, the digital key function of the wireless communication module unit (220) of the vehicle (200) can also be activated. Accordingly, the BLE module (122) and the BLE module (222) of the wireless communication module unit (120) are connected, and the UWB modules (123, 223) can perform UWB ranging.

[0088] According to the present invention, multiple users who have stored first biometric information in a vehicle (200) with one electronic key device (100) can access the vehicle (200), and the electronic key device (100) according to the present invention can have the effect of further enhancing security because even if the electronic key device (100) is lost, a user who has not stored biometric information in the vehicle (200) does not have access authority.

[0089] If there are 2 vehicles (200) and the user device is used

[0090] FIG. 4 is a drawing for explaining a method in which an electronic key device performs a digital key function when two vehicles according to the present invention use a user terminal.

[0091] First vehicle digital key generation step (S'10)

[0092] According to the present invention, when there are two vehicles and a user terminal (300) is used, a method for an electronic key device (100) to perform a digital key function may include a step (S'10) in which the user terminal (300) generates a digital key of a first vehicle (210'). For a specific example, the generation of the digital key of the first vehicle (210') may mean that the user terminal (300) performs owner pairing with the first vehicle (210'), and the digital key framework of the user terminal (300) generates a digital key in a Secure Element (SE) of the user terminal (300). The step in which the user terminal (300) performs owner pairing with the first vehicle (210') may follow the specifications defined in the Car Connectivity Consortium (CCC).

[0093] According to an embodiment of the present invention, when there are two vehicles and a user terminal (300) is used, a method for an electronic key device (100) to perform a digital key function may include a step (S'10) in which the user terminal (300) generates a digital key of a first vehicle (210'). For a specific example, generating the digital key of the first vehicle (210') may include a step in which the user terminal (300) receives a digital key from another electronic device with which owner pairing has been performed and the user terminal (300) receives a key generation request from another electronic device with which owner pairing has been performed and an immobilizer token of the first vehicle (210') is stored in a confidential mailbox of the user terminal (300). The step of the user terminal (300) sharing a digital key from another electronic device on which owner pairing has been performed may follow the specifications defined in the Car Connectivity Consortium (CCC).

[0094] Second vehicle digital key generation stage (S'20)

[0095] According to the present invention, when there are two vehicles and a user terminal (300) is used, a method for an electronic key device (100) to perform a digital key function may include a step in which the user terminal (300) generates a digital key of a second vehicle (220'). For a specific example, generating a digital key of the second vehicle (220') may mean that the user terminal (300) performs owner pairing with the second vehicle (220'), and the digital key framework of the user terminal (300) generates a digital key in a Secure Element (SE) of the user terminal (300). The step in which the user terminal (300) performs owner pairing with the second vehicle (220') may follow the specifications defined in the Car Connectivity Consortium (CCC).

[0096] According to an embodiment of the present invention, when there are two vehicles and a user terminal (300) is used, a method for an electronic key device (100) to perform a digital key function may include a step of the user terminal (300) generating a digital key of a second vehicle (220'). For a specific example, the generation of the digital key of the second vehicle (220') may include a step of the user terminal (300) receiving a digital key from another electronic device with which owner pairing has been performed with the second vehicle (220'). For a specific example, the generation of the digital key of the second vehicle (220') may mean that the user terminal (300) receives a key generation request from another electronic device with which owner pairing has been performed and an immobilizer token of the second vehicle (220') is stored in a confidential mailbox of the user terminal (300). The step of the user terminal (300) receiving a digital key from another electronic device with which owner pairing has been performed may follow the specifications defined in the CCC (Car Connectivity Consortium).

[0097] Key sharing and first biometric information transmission step (S'30)

[0098] According to one embodiment of the present invention, the user terminal (300) can transmit the digital keys of the first vehicle (210') and the second vehicle (220') to the electronic key device (100). For a specific example, the user terminal (300) can transmit the digital keys generated by a method of storing the immobilizer tokens of the first vehicle (210') and the second vehicle (220') in the confidential mailbox of the electronic key device (100).

[0099] According to one embodiment of the present invention, the user terminal (300) can store first biometric information of a user of a first vehicle or a user of a second vehicle. For example, if the user's biometric information is fingerprint recognition information, the user's fingerprint can be recognized on the display of the user terminal (300) to store the user's fingerprint recognition information in a memory unit (not shown) of the user terminal (300), and then the stored user's fingerprint recognition information can be transmitted to the electronic key device (100). For another example, if the user's biometric information is iris recognition information, the user's iris can be recognized by the camera of the user terminal (300) to store the user's iris recognition information in a memory unit (not shown) of the user terminal (300). Accordingly, the user's iris recognition information stored in the memory can be transmitted to the electronic key device (100).

[0100] According to one embodiment of the present invention, the memory unit (130) of the electronic key device (100) can store first biometric information received from the user terminal (300), and can separately store each first biometric information for each vehicle and each user of each vehicle.

[0101] In the present invention, as illustrated in FIG. 3, when a first user (310) and a second user (320) register biometric information in one vehicle (200), the registration is described as dividing into 1-1 biometric information registration and 1-2 biometric information registration. However, as illustrated in FIG. 4, when there are two or more vehicles, or further, when there are two or more users in each of two or more vehicles, the first biometric information stored in the memory unit (130) of the electronic key device (100) may mean a plurality of first biometric information including 1-1 biometric information, 1-2 biometric information, and 1-3 biometric information.

[0102] Second biometric information reception step (S'40)

[0103] According to the present invention, the electronic key device (100) includes a biometric information sensor unit (110), and the biometric information sensor unit (110) can sense second biometric information for determining whether a user has access authority to the electronic key device (100) and the vehicle (200) in order to perform a digital key function.

[0104] According to the present invention, the first biometric information may be at least one of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, and the second biometric information may be configured to be biometric information that matches the first biometric information. For example, if the first biometric information is user fingerprint recognition information, the second biometric information may also be user fingerprint recognition information, and if the first biometric information is a combination of user vein recognition information and user face recognition information, the second biometric information may also be configured as a combination of user vein recognition information and user face recognition information.

[0105] User authentication and BLE, UWB activation steps (S'50)

[0106] According to the present invention, the electronic key device (100) may include a processor unit (140). Specifically, the processor unit (140) may activate the digital key function of the wireless communication module unit (120) based on first biometric information stored in the memory unit (130).

[0107] According to the present invention, the processor unit (140) can compare whether the first biometric information stored in the memory unit (130) matches the second biometric information sensed by the biometric information sensor unit (110). Specifically, if the processor unit (140) determines that the first biometric information stored in the memory unit (130) matches the second biometric information sensed by the biometric information sensor unit (110), the processor unit (140) can activate the digital key function of the wireless communication module unit (120).

[0108] Second vehicle digital key function execution stage (S'60)

[0109] According to the present invention, when user authentication is performed using an electronic key device (100), the electronic key device (100) can perform the function of a digital key for a first vehicle (210') or a second vehicle (220'). Accordingly, a user who has stored first biometric information in a user terminal (300) with one electronic key device (100) can access the first vehicle (210') or the second vehicle (220'), and the electronic key device (100) according to the present invention can have the effect of further strengthening security because even if the electronic key device (100) is lost, a user who has not stored first biometric information in the user terminal (300) does not have access authority.

[0110] As illustrated, if the user of the second vehicle (220') registers the first biometric information in the user terminal (300) and generates the digital key of the second vehicle (220') in a relationship with the user terminal (300), if the second biometric authentication information is sensed in the electronic key device (100) and a user authentication step is performed, the user of the second vehicle (220') can have access rights only to the second vehicle (220'). Specifically, if the first biometric authentication information of the user of the second vehicle (220') is stored in the electronic key device (100), if the second biometric authentication information matching the first biometric authentication information is sensed and a user authentication step is performed, the electronic key device (100) can activate the digital key function of the wireless communication module (220) of the second vehicle (220').

[0111] In other words, when the electronic key device (100) senses second biometric authentication information that does not match the first biometric authentication information of the user of the second vehicle (220') stored in the electronic key device (100), the electronic key device (100) cannot activate the digital key function of the wireless communication module (220) of the second vehicle (220'), and therefore, a third party who inputs second biometric authentication information that does not match the first biometric authentication information of the user of the second vehicle (220') stored in the electronic key device (100) cannot have access to the second vehicle (220').

[0112] First vehicle digital key function execution step (S'70)

[0113] According to the present invention, when user authentication is performed using an electronic key device (100), the electronic key device (100) can perform the function of a digital key for a first vehicle (210') or a second vehicle (220'). Accordingly, a user who has stored first biometric information in a user terminal (300) with one electronic key device (100) can access the first vehicle (210') or the second vehicle (220'), and the electronic key device (100) according to the present invention can have the effect of further strengthening security because even if the electronic key device (100) is lost, a user who has not stored first biometric information in the user terminal (300) does not have access authority.

[0114] As illustrated, if a user of a first vehicle (210') registers first biometric information in a user terminal (300) and generates a digital key of the first vehicle (210') in a relationship with the user terminal (300), and if second biometric authentication information is sensed in the electronic key device (100) and a user authentication step is performed, the user of the first vehicle (210') can have access rights only to the first vehicle (210'). Specifically, if the first biometric authentication information of the user of the first vehicle (210') is stored in the electronic key device (100), and if second biometric authentication information matching the first biometric authentication information is sensed and a user authentication step is performed, the electronic key device (100) can activate the digital key function of the wireless communication module (220) of the first vehicle (210').

[0115] In other words, when second biometric authentication information that does not match the first biometric authentication information of the user of the first vehicle (210') stored in the electronic key device (100) is sensed, the electronic key device (100) cannot activate the digital key function of the wireless communication module (220) of the first vehicle (210'), and therefore, a third party who inputs second biometric authentication information that does not match the first biometric authentication information of the user of the first vehicle (210') stored in the electronic key device (100) cannot have access to the first vehicle (210').

[0116] Examples of use of electronic key devices

[0117] FIG. 5 is a drawing for explaining the access rights of a first user when an electronic key device according to the present invention manages registration of digital keys for multiple users and multiple vehicles.

[0118] As illustrated, when using the electronic key device (100) according to the present invention, multiple users can register digital keys for multiple vehicles, so that multiple users can perform the function of the digital key by using the electronic key device (100) for multiple vehicles with one electronic key device (100).

[0119] As illustrated, in one embodiment of the present invention, when a first user (310), a second user (320), and a third user (330) register first biometric information in one electronic key device (100), the first user (310) may have access to the first vehicle (210') and the third vehicle (230'), the second user (320) may have access to the third vehicle (230'), and the third user may have access only to the second vehicle (220'). At this time, when the first user (310) authenticates the electronic key device (100), for example, when the user fingerprint recognition information of the first user (310) is stored in the memory unit (130), when the first user (310) scans his / her user fingerprint recognition information in the biometric information sensor unit (110), the first user (310) can access the first vehicle (210') and the third vehicle (230'), which are specific vehicles to which the first user (310) has access rights, and the function of the digital key can be activated.

[0120] The scope of the present invention is not limited to the embodiments described above, but can be implemented in various forms within the scope of the appended claims. It is contemplated that the scope of the claims encompasses various modifications that can be made by anyone skilled in the art without departing from the spirit of the invention as claimed.

[0121] [Explanation of symbols]

[0122] 100: Electronic key device

[0123] 110: Biometric information sensor unit

[0124] 120: Wireless communication module section

[0125] 121: NFC module

[0126] 122: BLE module

[0127] 123: UWB module

[0128] 130: Memory section

[0129] 140: Processor section

[0130] 200: Vehicle

[0131] 210: Biometric information sensor section

[0132] 220: Wireless communication module section

[0133] 221: NFC module

[0134] 222: BLE module

[0135] 223: UWB module

[0136] 230: Memory section

[0137] 210': First vehicle

[0138] 220': Second vehicle

[0139] 230': Third vehicle

[0140] 310: First User

[0141] 320: Second User

[0142] 330: Third party user

[0143] S10: Digital Key Generation Step

[0144] S20: Step 1-1: Biometric Information Registration

[0145] S30: Step 1-2 Biometric Information Registration

[0146] S40: First biometric information transmission step

[0147] S50: 2-1 Biometric Information Sensing Step

[0148] S60: 2-2 Biometric Information Sensing Step

[0149] S70: User authentication and BLE, UWB activation steps

[0150] S80: Digital Key Function Execution Steps

[0151] S10': First vehicle digital key generation step

[0152] S20': Second vehicle digital key generation step

[0153] S30': Digital key sharing and first biometric information transmission step

[0154] S40': Second biometric information reception step

[0155] S50': User authentication and BLE, UWB activation steps

[0156] S60': Second vehicle digital key function execution steps

[0157] S70': First vehicle digital key function execution step

Claims

1. A method for performing a digital key function of a vehicle using an electronic key device having a digital key of the vehicle, A sensing step in which the vehicle senses at least one first biometric information; A storage step in which the vehicle stores the sensed first biometric information; A transmission step in which the vehicle transmits the stored first biometric information to the electronic key device; and A receiving step in which the vehicle receives digital key function performance information from the electronic key device; The above digital key function performance information is: Information that activates the wireless communication module of the vehicle based on the first biometric information received from the vehicle by the electronic key device. How to perform the digital key function of a vehicle.

2. In paragraph 1, The at least one first biometric information includes different first-first biometric information and first-second biometric information, The above sensing step is to sense the different 1-1 biometric information and 1-2 biometric information, The above storage step stores the sensed different 1-1 biometric information and 1-2 biometric information. How to perform the digital key function of a vehicle.

3. In paragraph 1, The at least one first biometric information is, One or more of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, How to perform the digital key function of a vehicle.

4. In paragraph 1, The above digital key function performance information is: Information that performs the function of the digital key based on any one of the NFC module, BLE module, and UWB module included in the wireless communication module of the vehicle or the wireless communication module of the electronic key device. How to perform the digital key function of a vehicle.

5. In the vehicle, the digital key function is performed using an electronic key device having a digital key of the vehicle. Biometric information sensor unit; A wireless communication module unit communicating with the electronic key device; and including the memory section; The above biometric information sensor unit senses at least one first biometric information, The above memory unit stores at least one first biometric information sensed, The wireless communication module transmits at least one stored first biometric information to the electronic key device, The wireless communication module unit receives digital key function execution information, which is information for activating the digital key function of the wireless communication module unit based on at least one or more first biometric information transmitted, from the electronic key device. A vehicle in which digital key function is performed.

6. In paragraph 5, The at least one first biometric information includes different first-first biometric information and first-second biometric information, The above biometric information sensor unit, Sensing the above different 1-1 biometric information and 1-2 biometric information, The above memory section, Storing the above different 1-1 biometric information and 1-2 biometric information, A vehicle in which digital key function is performed.

7. In paragraph 5, The at least one first biometric information is, One or more of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, A vehicle in which digital key function is performed.

8. In paragraph 5, The above digital key function performance information is: Information that performs the function of the digital key based on any one of the NFC module, BLE module and UWB module included in the wireless communication module unit or the wireless communication module unit of the electronic key device. The above vehicle in which the digital key function is performed.

9. A method for performing a digital key function of an electronic key device based on at least one first biometric information and a vehicle digital key of the electronic key device, A receiving step in which the electronic key device receives at least one first biometric information from the vehicle or user device; A user authentication step in which the electronic key device performs user authentication based on the first biometric information received; and An activation step in which the electronic key device activates the digital key function based on the user authentication performed above; A method for performing a digital key function of an electronic key device.

10. In paragraph 9, The above user authentication step; a step of sensing at least one second biometric information; and A step of comparing whether the second biometric information matches the first biometric information; If the second biometric information matches the first biometric information in the user authentication step, the activation step is performed. A method for performing a digital key function of an electronic key device.

11. In paragraph 10, The first biometric information and the second biometric information are, One or more of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, A method for performing a digital key function of an electronic key device.

12. In paragraph 10, The at least one first biometric information includes different first-first biometric information and first-second biometric information, The at least one second biometric information includes different second-1 biometric information and second-2 biometric information, A method for performing a digital key function of an electronic key device.

13. In the electronic key device that performs a digital key function based on at least one first biometric information and a vehicle digital key of the electronic key device, Biometric information sensor unit; A wireless communication module unit for communicating with the vehicle or user device; memory section; and Processor unit; including, The above wireless communication module unit includes one of an NFC module, a BLE module, and a UWB module, The wireless communication module receives at least one first biometric information from the vehicle or the user device, The above memory unit stores the received first biometric information, The processor unit activates the digital key function of the wireless communication module unit based on the stored first biometric information. An electronic key device that performs digital key functions.

14. In paragraph 13, The above biometric information sensor unit, Sensing at least one second biometric information, The above processor unit configured to compare whether the second biometric information matches the first biometric information; If the second biometric information matches the first biometric information, the digital key function of the wireless communication module is configured to be activated. An electronic key device that performs digital key functions.

15. In paragraph 14, The first biometric information and the second biometric information are, One or more of user fingerprint recognition information, user iris recognition information, user voice recognition information, user vein recognition information, and user face recognition information, An electronic key device that performs the functions of a digital key.

16. In paragraph 14, The at least one first biometric information includes different first-first biometric information and first-second biometric information, The above biometric information recognition sensor unit recognizes at least one second biometric information, The at least one second biometric information includes different second-1 biometric information and second-2 biometric information, An electronic key device that performs digital key functions.

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