Vehicle and vehicle control method

Abstract

To provide a vehicle and a vehicle control method that repeat or interrupt a transaction based on a result of a transaction between a digital key and the vehicle after the transaction has been completed.SOLUTION: A vehicle capable of carrying out authentication of a digital key 200 further smoothly comprises: a reader 100 that carries out NFC communication with the digital key; and a controller 150 that carries out a preset function of the vehicle based on a successful transaction with the digital key 200 through the reader 100. The reader 100 operates in a first mode for detecting a presence of the digital key 200 based on the successful transaction, and is capable of not starting the transaction while operating in the first mode, even if the digital key 200 is detected.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a vehicle and a vehicle control method, and more specifically to a vehicle and a vehicle control method that can more smoothly perform digital key authentication. [Background Art]

[0002] NFC (Near Field Communication) communication is one type of wireless tag (RFID) technology, and is a non-contact communication technology that uses the 13.56 MHz frequency band. Since the communication distance is short, it is relatively excellent in security and is one of the inexpensive communication technologies.

[0003] Since NFC communication can use both data reading and writing functions, it is widely used not only for payment but also for information transmission and access control purposes.

[0004] Due to the convenience of NFC communication as described above, NFC communication is used as an authentication technology for vehicle access.

[0005] However, when a user continuously tags the NFC reader installed in the vehicle with a digital key, an unintended vehicle function may be executed or an intended vehicle function may not be executed. [Summary of the Invention] [Problem to be Solved by the Invention]

[0006] The present disclosure provides a vehicle and a vehicle control method that repeat or interrupt a transaction according to a transaction result after a transaction between a digital key and the vehicle is completed. [Means for Solving the Problem]

[0007] A vehicle according to one embodiment for achieving the aforementioned objectives includes a reader that performs NFC communication with a digital key; and a controller that performs a pre-set function of the vehicle based on the success of a transaction with the digital key through the reader, wherein the reader operates in a first mode for detecting the presence of the digital key based on the success of the transaction, and while operating in the first mode, it may not initiate the transaction even if the digital key is detected.

[0008] Furthermore, while operating in the first mode, the reader can transmit a polling signal at a preset interval to detect the presence of the digital key.

[0009] Furthermore, if the reader cannot receive a response signal corresponding to the polling signal, it can transmit the polling signal at a period even shorter than the preset period.

[0010] Furthermore, the reader can transmit the polling signal at intervals of the preset period based on the receipt of a response signal corresponding to the polling signal while transmitting the polling signal at a period even shorter than the preset period.

[0011] Furthermore, the reader can operate in a second mode in which it waits for the transaction based on the fact that it has not received a response signal corresponding to the polling signal while transmitting the polling signal at a period even shorter than the preset period.

[0012] Furthermore, the reader can operate in a second mode, which waits for the transaction based on having operated in the first mode for a predetermined period of time.

[0013] Furthermore, the reader can operate in a third mode to initiate the transaction based on sensing a change in the electromagnetic field while operating in the second mode or receiving a start command from the controller.

[0014] Furthermore, the reader can operate in a third mode to accumulate the number of failures based on the failure of the transaction, to start the transaction based on the accumulated number of failures being less than a preset value, and to operate in the first mode based on the accumulated number of failures being the same as the preset value.

[0015] Furthermore, the reader is provided on the door handle, and the controller can lock or unlock the door based on the success of the transaction.

[0016] Furthermore, the reader is located inside the vehicle, and the controller can grant starting authority to the vehicle's starting system based on the success of the transaction.

[0017] A vehicle control method according to one embodiment for achieving the aforementioned objectives includes a vehicle control method that includes a reader that performs NFC communication with a digital key, and the method may include the steps of: the vehicle controller performing a pre-set function of the vehicle based on the success of a transaction with the digital key through the reader; the reader operating in a first mode for detecting the presence of the digital key based on the success of the transaction; and the reader not initiating the transaction even if the digital key is detected while operating in the first mode.

[0018] Furthermore, the step in which the reader operates in the first mode may include the step of transmitting a polling signal for detecting the presence of the digital key at predetermined intervals.

[0019] Furthermore, the step in which the reader operates in the first mode may further include the step of transmitting the polling signal at a period even shorter than the preset period if it is unable to receive a response signal corresponding to the polling signal.

[0020] Furthermore, the steps in which the reader operates in the first mode may further include the step of transmitting the polling signal at each of the preset periods based on the reception of a response signal corresponding to the polling signal while the polling signal is being transmitted at a period even shorter than the preset period.

[0021] The method may further include a step in which the reader operates in a second mode, waiting for the transaction based on the fact that it has not received a response signal corresponding to the polling signal while transmitting the polling signal at a period shorter than the preset period.

[0022] The method may further include a step in which the reader operates in a second mode, waiting for the transaction based on having operated in the first mode for a predetermined period of time.

[0023] The method may further include a step in which the reader operates in a third mode to initiate the transaction based on sensing a change in the electromagnetic field while operating in the second mode or receiving a start command from the controller.

[0024] The method may further include the steps of: the leader accumulating a failure count based on the failure of the transaction, operating in a third mode to initiate the transaction based on the accumulated failure count being less than a preset value, and operating in the first mode based on the accumulated failure count being equal to the preset value;

[0025] Further, the reader is provided on a door handle, and the step of executing a preset function of the vehicle by the vehicle controller based on a successful transaction between the reader and the digital key may include: locking or unlocking the door based on the successful transaction;

[0026] Further, the reader is provided inside the vehicle, and the step of executing a preset function of the vehicle by the vehicle controller based on a successful transaction between the reader and the digital key may include: granting a starting authority to a starting system of the vehicle based on the successful transaction;

Effects of the Invention

[0027] According to the present disclosure, even if a transaction fails, the transaction can be retried without an untagging operation of the digital key.

[0028] Further, according to the present disclosure, when the digital key is continuously tagged even though the transaction has succeeded, continuous execution of the transaction can be prevented.

[0029] Further, according to the present disclosure, after completing a required transaction, power consumption can be prevented by switching the reader to a low-power mode.

Brief Description of Drawings

[0030] [Figure 1] An exterior appearance of a vehicle according to an embodiment is illustrated. [Figure 2] It is a block diagram illustrating the configuration of a vehicle according to an embodiment. [Figure 3] It is a drawing illustrating a communication process among a digital key, a reader and a controller. [Figure 4] It is a flowchart illustrating a process of changing an operation mode of a reader according to an embodiment. [Figure 5] Various examples of readers operating in digital key detection mode transmitting polling signals are illustrated. [Figure 6] Various examples of readers operating in digital key detection mode transmitting polling signals are illustrated. [Figure 7] Various examples of readers operating in digital key detection mode transmitting polling signals are illustrated. [Modes for carrying out the invention]

[0031] The advantages and features of the disclosed invention, and the methods and apparatus for achieving them, will become clearer with reference to the embodiments described below, along with the accompanying drawings. However, the disclosed invention is not limited to the embodiments disclosed below and may be embodied in a variety of different forms, provided that the disclosed embodiments complete the disclosure of the invention and fully inform those ordinary skill in the art to which the disclosed invention belongs of the scope of the invention, and the disclosed invention is defined solely by the scope of the claims.

[0032] This document will briefly explain the terminology used in the disclosed specification and then provide a detailed description of the disclosed invention.

[0033] The terminology used in the disclosed invention has been selected as widely used and general terms as possible, taking into account the function of the disclosed invention. However, this may change depending on the intentions of the articulators in the field, case law, the emergence of new technologies, etc. In some cases, the applicant may have arbitrarily selected terms, in which case their meaning will be described in detail in the description of the relevant invention. Therefore, the terminology used in the disclosed invention should not be merely names of terms, but should be defined based on the meaning of the term and the overall content of the disclosed invention.

[0034] When a specification states that a part of it "contains" certain components, this means, unless otherwise stated, that it may contain other components, not exclude them. Furthermore, the term "part" as used in the specification refers to software, hardware components such as FPGAs or ASICs, and a "part" performs a certain role. However, "part" is not limited to software or hardware. A "part" may be configured to reside on an addressable storage medium, or to regenerate one or more processors. Thus, as an example, a "part" may include components such as software components, object-oriented software components, class components, and task components, as well as processes, functions, attributes, processors, subroutines, segments of program code, drivers, firmware, microcode, circuits, data, databases, data structures, tables, arrays, and variables. Components and the functions provided within a "part" may be combined with a smaller number of components and "parts," or further separated into additional components and "parts."

[0035] In the following, embodiments of the vehicle and the vehicle control method will be described in detail with reference to the attached drawings, so that those with ordinary skill in the art to which the disclosed invention pertains can easily implement them. Parts unrelated to the description will be omitted in order to clearly illustrate the invention disclosed in the drawings. Furthermore, identical reference numerals in the drawings indicate identical components, and redundant explanations for these components will be omitted.

[0036] Figure 1 shows the external appearance of a vehicle according to one embodiment, and Figure 2 is a block diagram illustrating the configuration of a vehicle according to one embodiment.

[0037] Referring to Figures 1 and 2, vehicle 1 may include a reader 100 that communicates with a digital key 200, a controller 150 that communicates indirectly with the digital key 200 through the reader 100, and an entry / exit starting system 160 controlled by the controller 150.

[0038] In various embodiments, the digital key 200 can include a short-range communication module.

[0039] For example, the digital key 200 may include an NFC communication module capable of performing NFC communication.

[0040] Such digital keys 200 may include not only card-type card keys equipped with a short-range communication module, but also a variety of electronic devices equipped with a short-range communication module.

[0041] For example, the digital key 200 may further include a user terminal device (e.g., a smartphone), but is not limited to electronic devices equipped with a short-range communication module.

[0042] The digital key 200 may have its own power supply device, but it can communicate with the vehicle 1 using power induced from the reader 100 without having its own power supply device.

[0043] For example, if the digital key 200 is implemented in the form of a card key, the card-shaped digital key 200 can communicate with the vehicle 1 using power induced from the reader 100 without needing its own power supply.

[0044] As yet another example, if the digital key 200 is implemented as a smartphone, the digital key 200 can be equipped with a power supply device on its own.

[0045] The reader 100 can exchange data with the digital key 200 by performing short-range communication (e.g., NFC communication).

[0046] For this purpose, the reader 100 may include a near-field communication module (e.g., an NFC communication module).

[0047] A near-field communication module may include a communication antenna capable of performing near-field communication (e.g., NFC communication), a matching unit that processes signals received from and / or transmitted through the communication antenna, an MCU that controls the overall operation of the near-field communication module, and an integrated circuit (e.g., NFC READER IC) corresponding to the type of near-field communication.

[0048] Vehicle 1 may include at least one leader 100. For example, Vehicle 1 may include a first leader provided on a door handle and / or a second leader provided inside Vehicle 1.

[0049] In various embodiments, vehicle 1 may further include a third leader located in the trunk of vehicle 1.

[0050] At this time, the second reader can perform a charging function to charge the digital key 200 (e.g., a smartphone).

[0051] The user can grant various permissions to the digital key 200 using the user interface unit (e.g., AVN device) inside the vehicle 1.

[0052] For example, the user can place the digital key 200 on a second reader located inside the vehicle 1 and grant various permissions (e.g., entry / exit permission, starting permission, etc.) to the digital key 200 through the user interface unit.

[0053] The digital key 200 can receive registration information and / or authorization information for vehicle 1 from the second reader via NFC communication.

[0054] For this reason, the digital key 200 can contain at least one memory.

[0055] The reader 100 can receive the necessary data from the digital key 200 through the NFC Initialize process defined in ISO 14443 and the Data Transaction process defined in ISO 7816.

[0056] The reader 100 can transmit data received from the digital key 200 to the controller 150, and the controller 150 can perform authentication of the digital key 200 based on the data received from the digital key 200.

[0057] At this time, the reader 100 can transmit the data received from the digital key 200 to the controller 150 via the vehicle communication network (e.g., CAN communication).

[0058] Furthermore, the reader 100 can transmit data received from the controller 150 via a vehicle communication network (e.g., CAN communication) to the digital key 200 through data transactions.

[0059] Vehicle communication networks can include Ethernet, MOST (Media Oriented Systems Transport), Flexray, CAN (Controller Area Network), LIN (Local Interconnect Network), and others.

[0060] The controller 150 can authenticate the digital key 200 based on the data of the digital key 200 received through the reader 100, and can perform various functions related to the vehicle 1 based on the successful authentication of the digital key 200.

[0061] In this specification, success of a transaction between the controller 150 and the digital key 200 may mean that authentication of the digital key 200 was successful, and failure of a transaction between the controller 150 and the digital key 200 may mean that authentication of the digital key 200 failed or that additional authentication information is requested from the digital key 200.

[0062] If additional authentication information is required from the digital key 200, the digital key 200 may be embodied in the user's device (e.g., a smartphone).

[0063] For example, if the digital key 200 is represented by a smartphone, the controller 150 can request authentication information from the digital key 200 via the smartphone, in addition to the vehicle registration information.

[0064] Authentication information via smartphones can include PIN information and / or biometric authentication information (e.g., facial recognition, fingerprint recognition, iris recognition, etc.).

[0065] The user can authenticate the digital key 200 by tagging it with the reader 100, and then execute the functions of vehicle 1 associated with successful authentication.

[0066] For example, a user can tag a digital key 200 to the door handle to lock or unlock the doors of vehicle 1.

[0067] The controller 150 can control the entry / exit start system 160 to unlock the door based on the success of a transaction with the digital key 200 tagged on the door handle if the door is locked.

[0068] Furthermore, the controller 150 can control the entry / exit start system 160 to lock the door based on the success of a transaction with the digital key 200 tagged on the door handle when the door is in an unlocked state.

[0069] The entry / exit starting system 160 may include a door locking device and / or a starting system.

[0070] The door locking device can lock or unlock the door based on a control signal from the controller 150. The starting system may be granted starting authority from the controller 150.

[0071] If the starting system is granted starting authority, the starting of vehicle 1 may be turned on based on the user pressing the start button to turn on the start.

[0072] Conversely, if the starting system is not authorized to start, the vehicle 1 may not start even if the user presses the start button.

[0073] The controller 150 may include at least one memory in which a program for performing operations related to the entry and exit and starting functions of the vehicle 1 is stored, and at least one processor for executing the stored program.

[0074] If the controller 150 includes multiple memories and multiple processors, the multiple memories and multiple processors may be integrated on a single chip or they may be physically separated. Each memory may include volatile memory such as S-RAM (Static Random Access Memory) or D-RAM (Dynamic Random Access Memory) for temporarily storing data. Each memory may also include non-volatile memory such as ROM (Read Only Memory), EPROM (Erasable Programmable Read Only Memory), or EEPROM (Electrically Erasable Programmable Read Only Memory) for long-term storage of control programs and control data. Each processor may include various logic circuits and arithmetic circuits, process data according to programs provided from each memory, and generate control signals based on the processing results.

[0075] The controller 150 can control the entry / exit start system 160 to lock the doors based on a successful transaction with the digital key 200 tagged to a second reader located inside the vehicle 1, when the engine of the vehicle 1 is stopped.

[0076] Furthermore, if the trunk is locked, the controller 150 can control the entry / exit start system 160 to unlock the trunk based on the success of a transaction with the digital key 200 tagged on a third reader located in the trunk.

[0077] The above describes the various components of Vehicle 1, but new components may be added or components described may be omitted within the normal scope of technology.

[0078] Figure 3 is a diagram illustrating the communication process between the digital key, reader, and controller, and Figure 4 is a flowchart illustrating the process by which the operating mode of the reader according to one embodiment is changed.

[0079] Referring to Figures 3 and 4, the reader 100 can operate in low-power mode until the pre-set conditions are met (S1 in Figure 3, 1000 in Figure 4).

[0080] In one embodiment, the low-power mode may be defined as a mode that waits for a transaction with a digital key.

[0081] The low-power mode may also be defined as slip mode, in which the reader 100 can sense the proximity of the digital key 200 and / or the human body while consuming less power.

[0082] For example, the reader 100 can sense changes in the electromagnetic field due to the proximity of the digital key 200 and / or the proximity of a human body.

[0083] For this purpose, the reader 100 can measure the amplitude or phase of the antenna signal received through the communication antenna in low-power mode. The reader 100 may also further include a low-power electrostatic sensor.

[0084] The reader 100 can prevent power consumption of vehicle 1 by operating in low-power mode when short-range communication (e.g., NFC communication) is not required.

[0085] The leader 100 can operate in transaction mode (1200 in Figure 3) based on sensing a change in the electromagnetic field or receiving a start command from the controller 150 (yes, 1100 in Figure 3).

[0086] For example, the reader 100 may measure the amplitude or phase of the antenna signal received through the communication antenna in low-power mode, and if a change in the electromagnetic field is detected, it may switch from low-power mode to transaction mode.

[0087] As another example, the controller 150 may send a start command to switch the reader 100 to transaction mode based on the detection of a user's approach through the vehicle 1's proximity sensor (e.g., ultrasonic sensor), the detection of a user terminal's approach through the vehicle 1's wireless communication module (e.g., Bluetooth communication module, UWB communication module), or the detection of a user's contact with the vehicle 1's handle through the vehicle 1's contact sensor (e.g., touch sensor).

[0088] The transaction mode is the mode in which the reader 100 initiates a transaction with the digital key 200, and means the mode in which the reader 100 can exchange data with the digital key 200 via NFC communication. For example, the transaction mode can be defined as the normal polling mode.

[0089] In transaction mode, the reader 100 can receive the necessary data from the digital key 200 through the NFC Initialize process defined in ISO 14443 and the Data Transaction process defined in ISO 7816.

[0090] Furthermore, in transaction mode, the reader 100 can transmit data received from the digital key 200 to the controller 150, and transmit data received from the controller 150 to the digital key 200.

[0091] For example, the reader 100 can send a polling signal (S2) in transaction mode, and the digital key 200, upon receiving the polling signal, can send a response signal (S3) corresponding to the polling signal (S2).

[0092] The reader 100 can confirm the presence of the digital key 200 based on the receipt of a response signal (S3) from the digital key 200.

[0093] Based on receiving a response signal (S3) from the digital key 200, the reader 100 can exchange various data with the digital key 200 (S4).

[0094] The data exchanged between reader 100 and digital key 200 may correspond to the NFC Initialize process as defined in ISO 14443.

[0095] For example, the digital key 200 can transmit UID data to the reader 100, the reader 100 can transmit a selection signal for the UID of the digital key 200, the digital key 200 can transmit a Select Acknowledgement (SAK) response signal to the selection signal of the reader 100, the reader 100 can transmit an Application Protocol Data Unit Command (APDU-C) signal to the digital key 200, and the digital key 200 can transmit an APDU-R (APDU Response) signal in response to the APDU-C signal.

[0096] The reader 100 can identify the digital key 200 based on the data received from it. For example, the reader 100 can identify the type of digital key 200 (e.g., a card or a smartphone).

[0097] Based on the completion of the data exchange corresponding to the NFC Initialize process, the reader 100 can transmit a wake-up signal to wake up the controller 150 (S5).

[0098] The controller 150 can be woken up based on receiving a wake-up signal from the reader 100, and the reader 100 can transmit data for the digital key 200 to the woken controller 150.

[0099] After the NFC communication initiation (NFC Initialize) process, the controller 150 can execute transactions with the digital key 200 through the reader 100.

[0100] For example, the controller 150 can transmit data to the reader 100 via a vehicle communication network, and the reader 100 can transmit the data received from the controller 150 to the digital key 200 via NFC communication.

[0101] Furthermore, the digital key 200 can transmit data to the reader 100 via NFC communication, and the reader 100 can transmit the data received from the digital key 200 to the controller 150 via the vehicle communication network.

[0102] In this way, the controller 150 and the digital key 200 can exchange data with each other (S6).

[0103] During the transaction process, the controller 150 can transmit an APDU-C signal to the digital key 200, and in response, the digital key 200 can transmit an APDU-R signal to the controller 150.

[0104] The controller 150 can authenticate the digital key 200 based on the data transmitted from the digital key 200. The data transmitted from the digital key 200 may include encrypted data corresponding to the vehicle 1.

[0105] The controller 150 can determine that the transaction with the digital key 200 was successful based on the fact that the data transmitted from the digital key 200 contains encrypted data corresponding to the vehicle 1.

[0106] Conversely, the controller 150 can determine that the transaction with the digital key 200 has failed based on the fact that the data transmitted from the digital key 200 does not contain encrypted data corresponding to the vehicle 1.

[0107] Based on the successful transaction with the digital key 200 (Yes in S7), the controller 150 can transmit a transaction success message (S8) to the reader 100.

[0108] As yet another example, based on the success of the transaction with the digital key 200 (yes in S7), an instruction (S8) can be transmitted to operate the reader 100 in digital key detection mode.

[0109] Furthermore, the controller 150 can perform pre-set functions of the vehicle 1 based on the success of the transaction with the digital key 200 (yes in S7).

[0110] For example, the controller 150 can grant starting authority to the starting system of vehicle 1 based on the success of a transaction with the digital key 200 via the first reader.

[0111] As yet another example, the controller 150 can lock or unlock the door based on the success of the transaction with the digital key 200 via the second reader.

[0112] As yet another example, the controller 150 can lock or unlock the trunk based on the success of the transaction with the digital key 200 via the third reader.

[0113] The controller 150 can transmit a transaction failure message (S9) to the reader 100 based on the fact that the transaction with the digital key 200 failed (No in S7).

[0114] In the process described above (S4-S6), if the distance between the digital key 200 and the reader 100 becomes too large and data cannot be received from the digital key 200, the transaction may be considered to have failed.

[0115] As yet another example, an instruction (S9) can be transmitted to cause the reader 100 to operate in low-power mode or transaction mode based on the failure of a transaction with the digital key 200 (No in S7).

[0116] In one embodiment, the reader 100 can operate in digital key detection mode to detect the presence of the digital key 200 based on the success of the transaction (1300 yes) (1400).

[0117] For example, the reader 100 can operate in digital key detection mode based on receiving a transaction success message from the controller 150 or receiving an instruction to operate the reader 100 in digital key detection mode.

[0118] The digital key detection mode refers to a mode in which only the presence of a nearby digital key 200 is detected, without performing the series of steps required for a transaction (the NFC communication initiation process defined in ISO 14443 and the data transaction process defined in ISO 7816).

[0119] In other words, while the reader 100 is operating in digital key detection mode, it may choose not to initiate a transaction even if a digital key 200 is detected.

[0120] Figures 5 to 7 illustrate various examples of how a reader operating in digital key detection mode transmits polling signals.

[0121] Referring to Figure 5, while operating in digital key detection mode, the reader 100 can transmit a polling signal P to detect the presence of the digital key 200 at a preset period pd1.

[0122] When the digital key 200 is tagged to the reader 100, the reader 100 can receive a response signal r corresponding to the polling signal P from the digital key 200.

[0123] If the reader 100 continuously receives a response signal r corresponding to the polling signal P from the digital key 200, it can be confirmed that the digital key 200 is tagged to the reader 100.

[0124] Referring to Figure 3, even if the reader 100 operating in digital key detection mode receives a response signal from the digital key 200 (S3), it may not proceed to the data exchange process (S4).

[0125] In other words, the reader 100 operating in digital key detection mode may not send a signal to wake up the controller 150. As yet another example, the reader 100 operating in digital key detection mode may not send a message to the controller 150 indicating that a digital key 200 has been detected.

[0126] Accordingly, the leader 100 can periodically send a polling signal P and periodically receive a response signal r corresponding to the polling signal.

[0127] The reader 100 may be switched to low-power mode based on having operated in digital key detection mode for a preset time d1 (yes for 1500).

[0128] In other words, the reader 100 counts the time it operates in digital key detection mode, and based on the counted time reaching a preset time d1, it can stop operating in digital key detection mode and operate in low power mode.

[0129] At this time, the pre-set time d1 can be set to approximately 5 seconds, but is not limited to this.

[0130] According to this disclosure, even if the digital key 200 remains tagged with the reader 100 after a successful transaction, unnecessary transactions will not be initiated again, thus providing convenience to the user.

[0131] Referring to Figures 6 and 7, the reader 100 operating in digital key detection mode periodically transmits a polling signal P according to a preset period pd1, and if it does not receive a response signal r corresponding to the polling signal P, it can transmit the polling signal P with a shorter period pd2 than the preset period pd1.

[0132] For example, the leader 100 can transmit a polling signal P a predetermined number of times with a period pd2 that is shorter than a predetermined period pd1.

[0133] As shown in Figure 6, the reader 100 can transmit the polling signal at preset intervals of pd1 based on the receipt of a response signal r corresponding to the polling signal P while transmitting the polling signal P at a period pd2 shorter than a preset period pd1.

[0134] In other words, once the leader 100 receives the response signal r corresponding to the polling signal P, after failing to receive the response signal r corresponding to the polling signal P, it can once again transmit the polling signal P with a normal period pd1.

[0135] In this case as well, the reader 100 counts the time spent operating in digital key detection mode, and based on the counted time reaching a preset time d1, it can stop operating in digital key detection mode and operate in low power mode.

[0136] On the other hand, as shown in Figure 7, the reader 100 can stop operating in digital key detection mode and operate in low power mode if it fails to receive a response signal (1500 yes) during the transmission of the polling signal P for a preset number of times with a period pd2 shorter than a preset period pd1.

[0137] In this case, the reader 100 can operate in digital key detection mode for a time d2 that is shorter than a preset time d1.

[0138] According to this disclosure, if it is determined that the digital key 200 has been untagged by the reader 100, the reader 100 may immediately interrupt the digital key detection mode and switch to a low-power mode.

[0139] Furthermore, according to this disclosure, if it is confirmed that the digital key 200 has been untagged, a polling signal can be transmitted with a period pd2 shorter than a preset period pd1, thereby quickly determining whether the digital key 200 has been reliably untagged by the reader 100.

[0140] In summary, as shown in Figure 5, if the digital key 200 is continuously tagged to the reader 100, the reader 100 can automatically switch to low-power mode after a preset time d1 has elapsed. As shown in Figure 6, even if the digital key 200 is continuously tagged to the reader 100, momentarily untagged, and then tagged again, the reader 100 can automatically switch to low-power mode after a preset time d1 has elapsed. As shown in Figure 7, if the digital key 200 is continuously tagged to the reader 100 and then untagged, the reader 100 can automatically switch to low-power mode even before the preset time d1 has elapsed.

[0141] According to the digital key detection mode described herein, even if the digital key 200 remains tagged after a successful transaction, the transaction will not be initiated for a predetermined time d1. This prevents the execution of additional functions due to unnecessary successful transactions.

[0142] For example, according to this disclosure, a user attempting to unlock the doors of vehicle 1 can prevent the doors of vehicle 1 from being locked again by continuously tagging the digital key 200 with the reader 100.

[0143] On the other hand, in one embodiment, the leader 100 can accumulate the number of failures based on whether a transaction has failed (1300 No), and compare the accumulated number of failures with a preset value (1600).

[0144] When the reader 100 is operating in low-power mode, the accumulated number of failures can be reset. Accordingly, the number of failures can be counted from the time the reader 100 in low-power mode begins communicating with the digital key 200.

[0145] In this case, the pre-set value (n) can be set to 2, but is not limited to this.

[0146] If a transaction fails, the reader 100 can operate in digital key detection mode (1400) if the cumulative number of failures is equal to a preset value (1600, yes).

[0147] In other words, if a transaction fails a number of times corresponding to a predetermined value (n), the reader 100 can prompt the user to untag and then tag the digital key 200 in order to attempt the transaction again.

[0148] On the other hand, if a transaction fails, Leader 100 can operate in transaction mode (1200) if the cumulative number of failures is less than a preset value (1600 No).

[0149] In other words, even if the transaction with the digital key 200 fails (n-1 times), the reader 100 can switch back to transaction mode and attempt the transaction with the digital key 200 again.

[0150] For example, if a pre-set value is set to 2, the reader 100 can perform the same series of steps for the transaction again (the NFC communication initiation process defined in ISO 14443 and the data transaction process defined in ISO 7816) if the transaction with the digital key 200 fails once.

[0151] According to this disclosure, the user can repeat the transaction for (n-1) times by persistently tagging the digital key 200 without having to untag it from the reader 100.

[0152] On the other hand, in various embodiments, when the digital key 200 is implemented as a smartphone, the controller 150 can request additional authentication information from the digital key 200.

[0153] For example, the digital key 200 can request additional biometric authentication information (e.g., fingerprint data) from a smartphone.

[0154] In the aforementioned case, the user can more easily perform identity verification by entering their fingerprint without untagging the digital key 200 with the reader 100.

[0155] According to conventional technology, if a transaction with the digital key 200 is successful, the reader 100 will operate in transaction mode. Consequently, if the user continues to tag the reader 100 with the digital key 200 after a successful transaction, the transaction process will be restarted, and unnecessary transaction processes will proceed.

[0156] As an example of the opposite, according to conventional technology, if a transaction with the digital key 200 fails, the reader 100 will operate in low-power mode. Consequently, if the user persistently tags the digital key 200 to the reader 100 for authentication again after a transaction has failed, the transaction process will not be restarted, and the user will have to untag the digital key 200 and then tag it again for authentication.

[0157] According to this disclosure, the aforementioned problem can be solved by operating the reader 100 in digital key detection mode if the transaction is successful or if the transaction fails more than a predetermined number of times.

[0158] Furthermore, according to this disclosure, if a transaction fails fewer times than a predetermined number of times, the aforementioned problem can be solved by adding an additional opportunity for the transaction.

[0159] Furthermore, according to this disclosure, after the necessary NFC communication is completed, the reader 100 can be switched to a low-power mode to prevent power consumption.

[0160] On the other hand, some components of vehicle 1 may be software and / or hardware components such as Field Programmable Gate Arrays (FPGAs) and Application Specific Integrated Circuits (ASICs).

[0161] On the other hand, the disclosed embodiments may be embodied in the form of a recording medium for storing computer-executable instruction words. The instruction words may be stored in the form of program code, which, when executed by a processor, can generate a program module to perform the operations of the disclosed embodiments. The recording medium may be a computer-readable recording medium.

[0162] Computer-readable recording media include all types of recording media that store instruction words that can be deciphered by a computer. Examples include ROM (Read Only Memory), RAM (Random Access Memory), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0163] The embodiments disclosed above have been described with reference to the attached drawings. Those with ordinary skill in the art to which the present invention pertains will understand that the present invention may be carried out in forms different from those disclosed without altering the technical idea or essential features of the invention. The disclosed embodiments are illustrative and should not be construed as limiting. [Explanation of Symbols]

[0164] 1: Vehicle 100: Leader 150: Controller 160: Entry / Exit Starting System 200: Digital Key

Claims

1. A reader that performs digital key and NFC communication; and A controller that performs a pre-set function of the vehicle based on the success of a transaction with the digital key via the reader; The aforementioned leader, A vehicle that operates in a first mode for detecting the presence of the digital key based on the success of the transaction, and does not initiate the transaction even if the digital key is detected while operating in the first mode.

2. The aforementioned leader, The vehicle according to claim 1, wherein, while operating in the first mode, a polling signal for detecting the presence of the digital key is transmitted at a preset interval.

3. The aforementioned leader, The vehicle according to claim 2, wherein if a response signal corresponding to the polling signal cannot be received, the polling signal is transmitted at a period even shorter than the preset period.

4. The aforementioned leader, The vehicle according to claim 3, wherein, while transmitting the polling signal at a period shorter than the preset period, the vehicle transmits the polling signal at the preset period intervals based on the receipt of a response signal corresponding to the polling signal.

5. The aforementioned leader, The vehicle according to claim 3, which operates in a second mode in which it waits for the transaction based on the fact that it was not able to receive a response signal corresponding to the polling signal while the polling signal was being transmitted at a period even shorter than the preset period.

6. The aforementioned leader, The vehicle according to claim 1, which operates in a second mode that waits for the transaction based on having operated in the first mode for a predetermined period of time.

7. The aforementioned leader, The vehicle according to claim 5 or 6, which operates in a third mode for initiating the transaction based on sensing a change in the electromagnetic field while operating in the second mode or receiving a start command from the controller.

8. The aforementioned leader, The vehicle according to claim 1, wherein it accumulates a failure count based on the failure of the transaction, operates in a third mode for starting the transaction based on the accumulated failure count being less than a preset value, and operates in the first mode based on the accumulated failure count being the same as the preset value.

9. The aforementioned leader is provided on the door handle. The controller is, The vehicle according to claim 1, wherein the door is locked or unlocked based on the success of the transaction.

10. The controller is, The leader is located inside the vehicle. The controller is, The vehicle according to claim 1, wherein starting authority is granted to the vehicle's starting system based on the success of the transaction.

11. In a vehicle control method including a digital key and a reader that performs NFC communication, A step in which the vehicle's controller performs a pre-configured function of the vehicle based on the successful transaction with the digital key through the reader; A step in which the reader operates in a first mode for detecting the presence of the digital key based on the success of the transaction; and A method for controlling a vehicle, comprising the step in which the reader, while operating in the first mode, does not initiate the transaction even if the digital key is detected.

12. The stage in which the reader operates in the first mode is: A vehicle control method according to claim 11, comprising the step of transmitting a polling signal for detecting the presence of the digital key at predetermined intervals.

13. The stage in which the reader operates in the first mode is: The vehicle control method according to claim 12, further comprising the step of transmitting the polling signal at a period even shorter than the preset period if a response signal corresponding to the polling signal cannot be received.

14. The stage in which the reader operates in the first mode is: A vehicle control method according to claim 13, further comprising the step of transmitting the polling signal at each of the preset periods based on the receipt of a response signal corresponding to the polling signal while the polling signal is being transmitted at a period shorter than the preset period.

15. The vehicle control method according to claim 13, further comprising: a step in which the leader operates in a second mode of waiting for the transaction based on the fact that it has not received a response signal corresponding to the polling signal while transmitting the polling signal at a period shorter than the preset period;

16. The vehicle control method according to claim 11, further comprising the step of the leader operating in a second mode, waiting for the transaction based on having operated in the first mode for a predetermined period of time.

17. A vehicle control method according to claim 15 or 16, further comprising the step of the reader operating in a third mode to initiate the transaction based on sensing a change in the electromagnetic field while operating in the second mode or receiving a start command from the controller.

18. The vehicle control method according to claim 11, further comprising the steps of: the leader accumulating a failure count based on the failure of the transaction; operating in a third mode for initiating the transaction based on the accumulated failure count being less than a preset value; and operating in a first mode based on the accumulated failure count being the same as the preset value.

19. The aforementioned leader is provided on the door handle. The step in which the vehicle's controller performs a pre-configured function of the vehicle based on the success of the transaction between the reader and the digital key is: A method for controlling a vehicle according to claim 11, further comprising the step of locking or unlocking the door based on the success of the transaction.

20. The leader is located inside the vehicle. The step in which the vehicle's controller performs a pre-configured function of the vehicle based on the success of the transaction between the reader and the digital key is: A method for controlling a vehicle according to claim 11, comprising the step of granting start authority to the vehicle's starting system based on the success of the transaction.

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