JP2014133506A - On-vehicle device, program, and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide "an on-vehicle device, a program, and a display method" which can provide users with optimal user interfaces when a plurality of users are authenticated.SOLUTION: An on-vehicle device equipped with a user authentication function includes: reception means for receiving user authentication information from a smart phone 20 possessed by a user; authentication means for authenticating the user on the basis of received user authentication information; determination means for determining a seat position of a user on board a vehicle; setting means for setting order of priority corresponding to the seat position; and selection means for selecting HMI screens 520, 530 of the authenticated user. The selection means changes the HMI screen 530 to the HMI screen 520 on the basis of order of priority of seat positions of users U1, U2 when the plurality of users U1, U2 are authenticated.

Description

  The present invention relates to a personal authentication method in an in-vehicle device, and more particularly to a technique for providing an interface corresponding to an authenticated individual.

  As a non-contact communication technology, NFC (NFC: Near Field Communication) has been put into practical use. Since NFC does not require a complicated authentication procedure like Bluetooth, it is considered that NFC will be used in many applications in the future. In particular, if NFC is installed in a smartphone, which is a portable multifunctional phone, personal authentication via a smartphone owned by an individual becomes easier.

  If an environment in which a plurality of users share one vehicle by car sharing or the like becomes widespread, reservations and key authentication can be performed with a smartphone. At this time, a personal machine identification (HMI: Human Machine Interface) screen display familiar to the user is realized by personal authentication that identifies the individual. Patent Document 1 discloses a system in which authentication data is stored in a mobile phone, and the authentication data is collated to automatically unlock the vehicle door, set the in-vehicle environment, start the engine, and the like. Patent Document 2 discloses providing a user-friendly interface that is frequently used in in-vehicle devices of a plurality of vehicles that are used among a plurality of users. Patent Document 3 discloses a device that automatically adjusts the operation of an in-vehicle device in accordance with the number of passengers or identified passengers. For example, when two people belonging to a family share one car, the phone number of the mobile phone carried by each person is stored, and the operating conditions such as the sound source, sound quality, and volume of the audio device are stored for each phone number. Stored in advance, it enables playback according to the number of passengers. Patent Document 4 discloses that a vehicle driver is specified and the in-vehicle device is set in a state matched to the driver.

JP 2003-78593 A JP 2011-195084 A JP 2003-312391 A Japanese Patent Laid-Open No. 2003-127831

  In an in-vehicle system in which multiple users share a single vehicle and provide customized HMI screens for each user, the user gets on the passenger seat and the rear seat first, and then other users in the driver's seat When boarding, the HMI screen of the user who boarded first will be displayed, but since the HMI screen is different from the HMI screen used by the user at the driver's seat, if the previous HMI screen cannot be changed, driving It becomes an HMI that is difficult to use for users sitting in a seat. If personal authentication is not performed, it is determined that the ignition key is not turned on, and as a result, functions that can be used by the user may be limited. For example, it is assumed that an audio or air conditioner cannot be operated, which would be very inconvenient for the user.

  An object of the present invention is to solve such a conventional problem and to provide an in-vehicle device, a program, and a display method capable of providing an optimal user interface to a user when a plurality of users are authenticated. .

  An in-vehicle device according to the present invention has a user authentication function, and receives user authentication information from a terminal device held by a user, and performs user authentication based on user authentication information received by the receiving unit. Authentication means for performing, determination means for determining a seat position of a user who has boarded the vehicle, setting means for setting a priority order corresponding to the seat position, and selection means for selecting an interface of the user authenticated by the authentication means; The selection means changes the user interface based on the priority of each seat position determined by the determination means when a plurality of users are authenticated.

  Preferably, when the priority of the seat position of the user who has boarded earlier is higher than the priority of the seat position of the user who has boarded later, the selection means does not change the selected user interface and vice versa. When the priority order is low, the selection means changes the user interface to the interface of the user who boarded later. Preferably, the determination unit determines a seat position based on a position where an authentication key point for authentication is used. Preferably, the setting means sets a priority order to authentication key points for performing authentication. Preferably, the setting means holds information in which priority is assigned to each seat position in advance. Preferably, the user interface is a human machine interface (HMI) screen displayed on a display unit of the in-vehicle device.

  A program according to the present invention is executed by an in-vehicle device having a user authentication function, and receives user authentication information from a terminal device held by a user, and performs user authentication based on the received user authentication information. Determining a seat position of a user who has boarded the vehicle; and selecting an authenticated user interface, wherein the selecting step determines when a plurality of users are authenticated. The user interface is changed based on the priority assigned to each seat position determined in the step.

  A display method of a user interface according to the present invention is in an in-vehicle device having a user authentication function, the step of receiving user authentication information from a terminal device held by a user, and user authentication based on the received user authentication information Performing a step of determining a seat position of a user who has boarded the vehicle; and selecting an authenticated user interface, wherein the selecting step includes the determination when a plurality of users are authenticated. The user interface is changed based on the priority assigned to each seat position determined in the step of performing.

  According to the present invention, when a plurality of users are authenticated, the user interface is selected based on the priority order of the seat positions, so that a user interface corresponding to the priority order can be provided. By giving the highest priority to the driver's seat, it is possible to provide a user interface that is familiar to the driver when another user has boarded after another user has boarded. Distraction can be reduced.

It is a figure which shows the example of 1 structure of the vehicle-mounted system which concerns on the Example of this invention. It is a block diagram which shows the structural example of the smart phone used as an authentication terminal which concerns on the Example of this invention. It is a block diagram which shows one structural example of the vehicle-mounted apparatus which concerns on the Example of this invention. It is a functional block diagram of the control part of the vehicle equipment shown in FIG. FIG. 5 is a diagram showing an example of data held by an authentication information holding unit shown in FIG. 4. It is a figure explaining an example of the authentication key point by a user authentication part. It is a figure which shows an example of the priority set by the priority setting part shown in FIG. FIG. 5 is an example of a table that holds the relationship between the user ID of the HMI selection unit and the user interface program shown in FIG. It is a flowchart which shows the operation example when the user interface program by an HMI selection part is performed. It is an example of a display of the HMI screen by the Example of this invention. It is an example of a display of the HMI screen by the Example of this invention. It is a flowchart explaining operation | movement of the vehicle-mounted system based on the Example of this invention. It is a figure which shows the example of a display of the concrete HMI screen when a single user uses a vehicle in the vehicle-mounted system of a present Example. It is a figure which shows the example of a display of the concrete HMI screen when a some user uses a vehicle in the vehicle-mounted system of a present Example. It is a figure which shows the example of a display of the concrete HMI screen when a some user uses a vehicle in the vehicle-mounted system of a present Example. It is a figure explaining the determination of the seat position which concerns on 2nd Example of this invention, and the setting of a priority order.

  Next, embodiments of the present invention will be described in detail with reference to the drawings. In the in-vehicle system of the present invention, the user brings the authentication terminal into the vehicle, and the user can use the functions installed in the in-vehicle device or the vehicle by receiving user authentication by the in-vehicle device. The authentication terminal only has to have a function of holding authentication data and performing contactless communication of such authentication data. For example, a card type, a multi-function mobile phone (smart phone), a mobile phone, It can be a notebook PC, tablet PC, or other portable terminal. NFC (Near Field Communication) that facilitates the authentication procedure is desirable for non-contact communication, but is not limited to this, and Bluetooth or other short-range wireless communication can be used.

  In the in-vehicle device, authentication information of a user who uses the vehicle is registered in advance. The number of user authentication information corresponds to the number of users using the vehicle. The in-vehicle device compares the registered authentication information with the authentication information issued from the authentication terminal, and if the authentication information matches, the user authentication is performed, and the user uses the in-vehicle device or the function of the vehicle. It becomes possible.

  The in-vehicle device is generally an electronic device mounted on a vehicle and can be mounted with various functions. For example, the in-vehicle device is equipped with a function for reproducing audio data and video data, a navigation function for guiding a route to a destination, a function for receiving a TV / radio broadcast, a communication function for connecting to a network such as the Internet, etc. Can do. Furthermore, the in-vehicle device can control the functions installed in the vehicle in cooperation with itself or another in-vehicle controller. For example, there are functions such as an air conditioner, an ignition switch, a power window, a door lock or unlock function mounted on the vehicle. In a certain aspect, the function mounted in the vehicle-mounted device or the vehicle can be limited or varied depending on the authenticated user. For example, one user is provided with a user interface that can execute all the functions of the in-vehicle device, and another user is provided with a user interface that can execute some functions of the in-vehicle device. Is done. In another aspect, a user is provided with a customized menu screen for performing the functions of the in-vehicle device, and another user is provided with a customized menu screen familiar to the user. The contents of the user interface can be appropriately selected and determined.

  In a preferred embodiment, when a plurality of users are authenticated, the user interface is selected based on the priority order of the seat positions where each user is seated. The priority order is preset for each seat. In another aspect, a priority is set for the authentication key point corresponding to the seat position, and the user interface is selected based on the priority of the authentication key point used by the user.

  Next, an in-vehicle system and a personal authentication method thereof according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating a configuration example of an in-vehicle system according to an embodiment of the present invention. In the in-vehicle system 10 according to the present embodiment, a plurality of users U1, U2, and U3 who share one vehicle respectively have smartphones 20-1, 20-2, and 20-3 as authentication terminals. The personal authentication information of the users U1, U2, and U3 is stored in the smartphones 20-1, 20-2, and 20-3, respectively. The smartphone transmits the user's personal authentication information by non-contact communication at the authentication key point in the vehicle. In a preferred embodiment, the smartphones 20-1 to 20-3 are equipped with NFC that performs authentication easily and at high speed. When the user is authenticated by the in-vehicle device 30 via his / her smartphone, the user can use the vehicle.

  The in-vehicle device 30 includes a multimedia playback function, a user authentication function, and the like, and the in-vehicle device 30 is connected to an in-vehicle controller 40 that controls functions installed in the vehicle via an in-vehicle bus 50. The in-vehicle device 30 can send a command to the in-vehicle controller 40 via the in-vehicle bus 50 to control the functions in the vehicle.

  FIG. 2 is a configuration example of the smartphone 20 as an authentication terminal. The smartphone 20 typically includes an input unit 100 that receives input from a user, a communication unit 110 that enables wireless or wired communication with an external electronic device, and the like, and a display control unit that controls display on the display 120, a sound output unit 130 for controlling sound output from the speaker, a control unit 140 for controlling each unit by executing a program including a microcontroller, a microprocessor, and the like, and a program for storing programs such as application software and firmware A memory 150 and a data memory 160 for storing various data are provided.

  The data memory 160 stores authentication data for personal authentication of the user, for example, identification information such as the user name and telephone number. The communication unit 110 also supports near-field non-contact communication such as NFC.

  FIG. 3 is a block diagram illustrating a configuration example of the in-vehicle device 30 illustrated in FIG. The in-vehicle device 30 is a television / radio receiver that receives a multimedia reproduction unit 200 that reproduces audio data and video data stored in a CD, DVD, Blu-ray disc, hard disk device, etc., digital television broadcast, AM / FM radio broadcast, etc. Unit 210, a navigation unit 220 that displays a road map around the vehicle position, guides a guidance route to the destination, and a communication unit 230 that can communicate with the smartphone 20 and other electronic devices wirelessly or by wire. , A situation detection unit 240 that detects a seat position when the user gets on, a vehicle operation state, and the like, an output unit 250 that outputs sound and images, a storage unit 260 that stores programs and data, and receives instructions from the user Professional including input unit 270, microcontroller, microprocessor, etc. Configured to include a control unit 280 for controlling each unit by executing the ram. In addition, this structure is an illustration, Comprising: The vehicle-mounted apparatus 30 is not limited to such a structure. The in-vehicle device 30 can be operated by a battery mounted on the vehicle even when the engine is stopped.

  A functional configuration included in the control unit 280 is shown in a block diagram of FIG. The control unit 280 compares the authentication data held in the authentication information holding unit 300, the authentication information holding unit 300 holding authentication data for authenticating the user, and the authentication data held in the smartphone 20, A user authentication unit 310 that performs user authentication when both authentication data match, a seat position determination unit 320 that determines a seat position on which the user has boarded based on a detection result of the situation detection unit 240, and prioritizes each seat position of the vehicle. A priority order setting unit 330 for setting and an HMI selection unit 340 for selecting a user interface program so as to provide an HMI screen corresponding to a user authenticated by the user are configured.

  FIG. 5 shows an example of data held by the authentication information holding unit 300. As shown in FIG. 1, when one vehicle is shared by three users U1, U2, and U3, the authentication information holding unit 300 uses authentications assigned to the users U1, U2, and U3, respectively. Retain data for use. For example, “XXX1” is assigned to the user U1 as authentication data. This authentication data is also held in the smartphone 20-1 held by the user U1. When a user who uses the vehicle is added, changed, or deleted, the contents of the authentication information holding unit 300 are rewritten via the input unit 270 or by a program.

  The user authentication unit 310 compares the authentication data provided from the smartphone held by the user with the authentication data held by the authentication information holding unit 300 when the user gets on the vehicle, and the authentication data matches. User authentication. FIG. 6 shows an example of user authentication. FIG. 6 is a plan view schematically showing the interior space of the vehicle, in which a driver seat 400, a passenger seat 410, and a rear seat 420 are illustrated. A display of the in-vehicle device 30 is disposed in front of the driver seat 400 and the passenger seat 410. In addition, an authentication key point 430 as a smartphone storage place is installed between the driver seat 410 and the passenger seat 420, and an authentication key point 440 is also installed in front of the driver seat 400. When the user gets on the vehicle, the user is authenticated by non-contact communication between the smartphone 20 and the in-vehicle device 30 by placing the smartphone owned by the user closer to either of the authentication key points 430 or 440. . The arrangement and the number of the authentication key points 430 and 440 are examples, and can be installed in another place or the number can be increased. In addition, an authentication key point is installed near the vehicle door, the user authenticates before boarding the vehicle, the vehicle door key is released after user authentication, and the user can board the vehicle. There may be. The authentication result of the user authentication unit 310 is provided to the seat position determination unit 320, the HMI selection unit 340, and the like.

  The seat position determination unit 320 determines the seat position on which the user has boarded based on the detection result from the situation detection unit 240. The situation detection unit 240 monitors the in-vehicle situation using various known techniques and provides the monitoring result. For example, an output result of a weight sensor provided in each seat is provided, imaging data from an imaging camera that images the interior space of the vehicle is provided, and a signal indicating whether or not the seat belt of the seat is worn is provided. The seat position determination unit 320 determines whether or not a certain load or more is detected by the weight sensor, whether or not a person is confirmed on the seat by analyzing imaging data, whether or not the seat belt of the seat is worn, or the like. Based on this, the seat position of the passenger is determined. In a preferred example, the seat position determination unit 320 preliminarily includes seat arrangement information of a vehicle (for example, if it is a four-seater, a driver's seat, a passenger seat, a rear left and right seat, and if it is a six-seater, a driver's seat, a passenger seat). The left and right seats in the center row, the left and right seats in the last row, etc.), and the seat position on which the user has boarded is selected from the seat arrangement information. The determination result of the seat position determination unit 320 is provided to the HMI selection unit 340.

  The priority order setting unit 330 sets a priority order for the seat position of the vehicle. In a preferred example, the priority order of the driver's seat is the highest, followed by the passenger seat, the rear seat, and the like. FIG. 7 shows a table in which the relationship between seat positions and priorities in a vehicle having a seat arrangement as shown in FIG. 6 is set. Note that the priority order for each seat can be changed, and the user can set or change the priority order via the input unit 270.

  The HMI selection unit 340 selects a user interface program so as to provide an HMI screen corresponding to the authenticated user. In a preferred embodiment, as shown in FIG. 8, the HMI selection unit 340 includes a table that defines the relationship of user interface programs corresponding to user IDs, and selects a user interface program corresponding to a user authenticated user. For example, when the user U1 is authenticated, the user interface program A is selected and executed. It should be noted that the HMI selection unit 340 changes the user interface program according to the priority order of the seats set by the priority order setting unit 330 when a plurality of users are authenticated before and after time. Determine whether or not. That is, the HMI selection unit 340 compares the priority order of the seat position of the user who has been previously authenticated with the seat position of the user who has been authenticated this time, and if the priority order of the seat position of the current user is high, The user interface program selected last time is changed to a user interface program corresponding to the current user. On the other hand, if the priority is not high, the execution is continued without changing the previously selected user interface program. For example, when the user U2 who first boarded sits in the passenger seat, the user interface program B is selected and executed. Thereafter, when the user U1 is seated in the driver's seat, the priority shown in FIG. 7 is higher than the passenger seat in the driver's seat, so the HMI selection unit 340 changes the user interface program B to the user interface program A. To do. If the user U1 gets in the driver's seat first and then the user U2 sits in the passenger seat, the priority of the passenger seat is lower than that of the driver seat, so the HMI selection unit 340 executes the user interface program A. Continue this execution without change.

  FIG. 9 is an operation flow for explaining execution of the user interface program. First, when a user gets on the vehicle, user authentication is performed (S100). At this time, the in-vehicle device 30 is supplied with the minimum necessary battery power, and user authentication by the user authentication unit 310 is possible.

  Next, when user authentication is performed, for example, the user is permitted to use some or all of the functions of the vehicle. The user operates the ignition key to start the main program of the in-vehicle device 30 (S102). Next, the user ID authenticated by the user authentication unit 310 is provided to the HMI selection unit 340, and the HMI selection unit 340 selects and executes a user interface program corresponding to the user ID (S104). Thereby, the HMI screen corresponding to the user is displayed on the display of the in-vehicle device 30 (S106).

  When the user interface program is executed, an HMI screen corresponding to the user is displayed on the display of the in-vehicle device 30 (S106). FIG. 10 shows an example of the HMI screen. FIG. 10A shows the HMI screen 500 when the user U1 interface program A is executed, and FIG. 10B shows the user U2 user interface program B executing it. It is the HMI screen 510 when it is done. The HMI screen 500 is customized for the user U1, and the HMI screen 510 is customized for the user U2. Such an HMI screen can be initialized by an authorized administrator or the user himself, but may reflect user operation history information.

  On the HMI screen 500, selection buttons for the functions 1 to 6 permitted for the user U1 are displayed, and the user U1 executes any one of the functions 1 to 6 installed in the vehicle by selecting the execution button 502. Can be made. Functions 1 to 6 include functions that can be executed by the in-vehicle controller 40 connected to the in-vehicle device 30 in addition to functions that can be executed by the in-vehicle device 30. For example, the functions included in the in-vehicle device 30 are a multimedia playback unit 200, a television / radio reception unit 210, a navigation unit 220, and the like. The functions controlled by the in-vehicle controller 40 are air conditioner, power window, light, door key. Lock / release.

  On the other hand, selection buttons for functions 1 to 3 permitted for user U2 are displayed on HMI screen 510, and user U2 selects one of functions 1 to 3 installed in the vehicle by selecting execution button 512. Can be executed. Here, an example is shown in which the functions that can be executed by the user U2 are limited compared to the user U1, but the present invention is not necessarily limited to such an example.

  FIG. 11 is a display example of the HMI screen when the navigation unit 220 of the in-vehicle device 30 is executed. FIG. 11A is an example of the HMI screen 520 for searching for “destination” when the user interface program A corresponding to the user U1 is executed. Similarly, FIG. 11B is an example of the HMI screen 530 for searching for “destination” when the user interface program B corresponding to the user U2 is executed. In the HMI screen 520, items 522 customized for the user U1 are laid out, and the screen display is easy to use for the user U1. Further, on the HMI screen 530, items 532 customized for the user U2 are laid out, and the screen display is easy to use for the user U2.

  Next, the operation of the in-vehicle stem according to the embodiment of the present invention is shown in the flow of FIG. First, the control unit 280 of the in-vehicle device 30 determines whether or not the vehicle is stopped based on the detection result of the situation detection unit 240, that is, whether or not the ignition key is turned off (S200). When the vehicle is traveling, since the driver is on board, the HMI is virtually not changed and the routine is terminated. When it is determined that the vehicle is stopped and then the user gets on the vehicle, user authentication is performed via the smartphone 20 held by the user (S202). If the user authentication fails, the user cannot use the vehicle and the routine is terminated.

  Next, when the user authentication is successful, the seat position where the user has boarded is determined (S204), and the determination result is transmitted to the HMI selection unit 340. Next, the HMI selection unit 340 determines whether or not the user is the first passenger (S206). The HMI selection unit 340 determines whether or not the user is the first passenger by monitoring the user authentication result notification from the user authentication unit 310. If it is determined that the user is the first passenger, the HMI selection unit 340 selects and executes a user interface program corresponding to the authenticated user (S208). On the other hand, if it is determined that the passenger is not the first passenger, the HMI selection unit 340 compares the priority order of the seat position of the user who has boarded before and the seat position of the user who has boarded this time (S210). It is determined whether the priority of the seat position is high (S212). If the priority of the seat position this time is high, the user interface program currently being executed is changed to a user interface program corresponding to the current user (S214). If the priority is not high, the user interface program selected last time is not changed and the execution of this program is continued (S216).

  Next, a specific display example of the HMI screen of this embodiment will be described. As a standard case, FIGS. 13A and 13B show an example in which the user who uses the vehicle is alone. FIG. 13A shows a case where only the user U1 is registered as a person who uses the vehicle. In this case, the user U1 is seated in the driver's seat, and the user authentication is performed by placing the smartphone 20-1 as the authentication terminal on either the authentication key point 430 or 440. As a result, the user interface program A corresponding to the user U1 is selected and executed, and the HMI screen 520 (see FIG. 11A) familiar to the user U1 is displayed on the display of the in-vehicle device 30.

  FIG. 13B shows a case where only the user U2 is registered as a person who uses the vehicle. Also in this case, the user U2 is seated in the driver's seat, and the user authentication is performed by placing the smartphone 20-2 owned by the user U2 at either the authentication key point 430 or 440. As a result, the user interface program B corresponding to the user U2 is selected and executed, and the HMI screen 530 (see FIG. 11B) familiar to the user U2 is displayed on the display of the in-vehicle device 30.

  FIG. 14 shows a so-called car sharing case in which a plurality of users use one vehicle. As shown in FIG. 14A, it is assumed that the user U2 has boarded the rear seat first. The user U2 is seated on the rear seat and is authenticated by placing the smartphone 20-2 as an authentication terminal on either the authentication key point 430 or 440. Since the user U2 is the first passenger, the user interface program B corresponding to the user U2 is selected and executed, and the HMI screen 530 familiar to the user U2 is displayed on the display of the in-vehicle device 30.

  Thereafter, as shown in FIG. 14B, the user U1 gets on the driver's seat, and the user U1 is authenticated by placing the smartphone 20-1 at either the authentication key point 430 or 440. Next, the priority order of the driver seat on which the user U1 is seated is compared with the priority order of the rear seat on which the user U2 is seated. Since the priority order is higher for the driver seat, the HMI selection unit 340 Change the selection to the corresponding user interface program A. As a result, the HMI screen 530 of the user U2 is changed to the HMI screen 520 familiar to the user U1.

  FIG. 15 shows the HMI screen when the user U1 gets on the driver's seat first and then the user U2 gets on the rear seat, contrary to FIG. In this case, since the priority of the driver seat of the user U1 is higher than the priority of the rear seat of the user U2, the user interface program is not changed, and the user's familiar HMI screen 520 is continuously displayed. Is done.

  Next, a second embodiment of the present invention will be described. In the first embodiment, the priority order setting unit 330 sets the priority order of the seat positions. In the second embodiment, the priority order is set to the authentication key points by weighting the authentication key points. . For example, in the vehicle interior space shown in FIG. 6, the weighting of the authentication key point 440 in front of the driver seat is made larger than the weight of the authentication key point 430 in front of the rear seat, that is, the priority of the authentication key point 440 is The priority is set higher than that of the authentication key point 430.

  It is assumed that the user U2 first boarded the rear seat and then the user U1 boarded the driver seat. User authentication is performed by the user U2 placing the smartphone 20-2 at the authentication key point 430, and the user authentication unit 310 notifies the HMI selection unit 340 that the authentication key point 430 has been used for authentication. Then, the HMI selection unit 340 selects the user interface program B corresponding to the user U2 and executes it.

  Next, user authentication is performed by the user U1 placing the smartphone 20-1 at the authentication key point 440, and the user authentication unit 310 notifies the HMI selection unit 340 that the authentication key point 440 has been used for authentication. . Then, the HMI selection unit 340 compares the priority order of the authentication key point 430 used for the user U2 and the authentication key point 440 used for the user U1. In this case, since the priority of the authentication key point 440 is high, the selection is changed to the user interface program A corresponding to the user U1.

  As described above, in the second embodiment, since the position of the authentication key point serves as both the seat position information and the priority order information, it is not necessary to determine the seat position on which the user has boarded using the output of the situation detection unit 240. The configuration of the control unit 280 can be simplified. Further, the number of authentication key points does not have to be two as shown in FIG. 6, and the seat position can be determined more accurately by installing the number of authentication key points corresponding to the number of the respective seat positions. For example, as shown in FIG. 16, authentication key points 600, 610, 620, 630 are installed in front of the driver's seat, in front of the passenger seat, in front of the right rear seat, in front of the left rear seat, etc., and weighted to each. May be added to determine the seat position and priority.

  The present invention is not limited to the above embodiments, and various modifications and changes can be made within the scope of the gist of the invention described in the claims. In addition, the present invention can include carrying out the first or second embodiment individually or in combination.

10: In-vehicle system 20-1 to 20-3: Smartphone 30: In-vehicle device 40: In-vehicle controller 200: Multimedia playback unit 210: Television / radio reception unit 220: Navigation unit 230: Communication unit 240: Status detection unit 250: Output Unit 260: storage unit 270: input unit 280: control unit 430, 440: authentication key point 500, 510: HMI screen 520, 530: HMI screen

Claims (10)

An in-vehicle device having a user authentication function,
Receiving means for receiving user authentication information from a terminal device held by the user;
Authentication means for performing user authentication based on user authentication information received by the receiving means;
Determining means for determining a seat position of a user who has boarded the vehicle;
Setting means for setting priorities corresponding to seat positions;
Selecting means for selecting an interface of a user authenticated by the authentication means,
The in-vehicle device, wherein the selection unit changes the user interface based on the priority order of each seat position determined by the determination unit when a plurality of users are authenticated. If the priority of the seat position of the user who boarded earlier is higher than the priority of the seat position of the user who boarded later, the selection means does not change the selected user interface, and vice versa. 2. The in-vehicle device according to claim 1, wherein when the value is low, the selection unit changes a user interface to an interface of a user who boarded later. The in-vehicle device according to claim 1, wherein the determination unit determines a seat position based on a position where an authentication key point for performing authentication is used. The in-vehicle device according to claim 3, wherein the setting unit sets a priority order for authentication key points for performing authentication. The in-vehicle device according to claim 1, wherein the setting unit holds information in which a priority is assigned to each seat position in advance. The in-vehicle device according to claim 1, wherein the user interface is a human machine interface (HMI) screen displayed on a display unit of the in-vehicle device. A program executed by an in-vehicle device having a user authentication function,
Receiving user authentication information from a terminal device held by the user;
Performing user authentication based on the received user authentication information;
Determining a seat position of a user boarding the vehicle;
Selecting an authenticated user interface;
The selecting step is a program for changing a user interface based on a priority assigned to each seat position determined by the determining step when a plurality of users are authenticated. If the priority of the seat position of the user who boarded earlier is higher than the priority of the seat position of the user who boarded later, the selecting step does not change the selected user interface and takes precedence over the opposite. The program according to claim 7, wherein, when the rank is low, the selection unit changes the user interface to an interface of a user who boarded later. A method for displaying a user interface in an in-vehicle device having a user authentication function,
Receiving user authentication information from a terminal device held by the user;
Performing user authentication based on the received user authentication information;
Determining a seat position of a user boarding the vehicle;
Selecting an authenticated user interface;
The selecting step is a display method in which when a plurality of users are authenticated, the user interface is changed based on the priority assigned to each seat position determined in the determining step. If the priority of the seat position of the user who boarded earlier is higher than the priority of the seat position of the user who boarded later, the selecting step does not change the selected user interface and takes precedence over the opposite. The display method according to claim 9, wherein when the ranking is low, the selection unit changes the user interface to an interface of a user who boarded later.

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