JP2020036786A - Glasses-type terminal, personal authentication system, and car-sharing system - Google Patents

Abstract

To provide a glasses-type terminal that allows personal authentication with excellent security.SOLUTION: An aspect of the present invention is a glasses-type terminal comprising a glass body and a measurement part for measuring acoustic properties of an outer ear of the user wearing the glass body. The acoustic properties measured by the measurement part are used as information to authenticate the user.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a glasses-type terminal, a personal authentication system, and a car sharing system.

  As authentication using characteristics unique to humans, there is known authentication using biometric information such as a fingerprint, a pupil, and a vein of a hand as authentication data. However, such authentication data is easily forged. Therefore, a technique for using the acoustic characteristics of the outer ear as authentication data to enhance security has been proposed (see Patent Document 1).

JP-T-2009-509575

  The above publication discloses that an authentication system using the acoustic characteristics of the outer ear is mounted on audio equipment such as a mobile phone, a headphone, and an earphone. However, all of these apparatuses are based on audio output.

  An aspect of the present disclosure is to provide a glasses-type terminal capable of performing personal authentication with excellent security.

  One aspect of the present disclosure is a glasses-type terminal (1) including a glass body (2) and a measuring unit (3) that measures acoustic characteristics of an outer ear of a user wearing the glass body (2). The acoustic characteristics measured by the measurement unit (3) are used as information for authenticating the user.

  According to such a configuration, by wearing the glasses-type terminal (1), it is possible to perform personal authentication of the user using the acoustic characteristics of the outer ear that are difficult to forge. Therefore, by providing the glasses-type terminal (1) in a facility or a vehicle that provides information to the glass body (2), personal authentication can be performed without separately attaching a user to an authentication device.

  One embodiment of the present disclosure may further include a reproducing unit (4) that generates a noise canceling signal based on acoustic characteristics, and a speaker (5) that reproduces an audio signal including the noise canceling signal. According to such a configuration, it is possible to perform noise cancellation according to the personality of the user based on the acoustic characteristics used for personal authentication. As a result, voice can be transmitted to the user in a sound field space suitable for voice transmission.

  In one aspect of the present disclosure, the acoustic characteristic may be a transfer function. According to such a configuration, personal authentication with excellent security can be easily and reliably performed using the glasses-type terminal (1).

  One embodiment of the present disclosure may further include a communication unit (6) that transmits the acoustic characteristics measured by the measurement unit (3) to the external authentication device (11). According to such a configuration, information for personal authentication can be centrally managed at a site geographically distant from the facility or vehicle used by the user.

  Another aspect of the present disclosure is a personal authentication system (10) including a glasses-type terminal (1) and an authentication device (11) that authenticates a user based on acoustic characteristics measured by a measurement unit (3).

  According to such a configuration, in a facility or a vehicle that provides information to the glass body (2) of the glasses-type terminal (1), personal authentication with excellent security can be performed without separately attaching the authentication device to the user. Becomes

  In one aspect of the present disclosure, the user using the vehicle (30) for car sharing may be authenticated by the authentication device (11). According to such a configuration, the glasses-type terminal (1) can be used as a device having both a vehicle driving support function for car sharing and a personal authentication function.

  Another embodiment of the present disclosure provides a cash system including: a personal authentication system (10); and a charging system (20) that performs a charging process for a user authenticated by an authentication device (11) in accordance with use of a vehicle (30). It is a sharing system (100).

  According to such a configuration, in a car sharing service in which a plurality of users share a vehicle (30), personal authentication of the user and collection of a usage fee to the user can be easily and reliably performed.

  Note that the reference numerals in the parentheses are examples showing the correspondence with the specific configurations and the like described in the embodiments described below, and the present disclosure is limited to the specific configurations and the like indicated in the parentheses. Not something.

FIG. 1 is a schematic diagram illustrating an appearance of a glasses-type terminal according to the embodiment. FIG. 2 is a schematic configuration diagram of the glasses-type terminal of FIG. FIG. 3A is an example of a graph showing the relationship between the input frequency and the amplitude per unit input, and FIG. 3B is an example of a graph showing the relationship between the input frequency and the phase. FIG. 4 is a schematic configuration diagram illustrating the car sharing system according to the embodiment. FIG. 5A is a flowchart schematically showing a registration process performed by the authentication device in the car sharing system in FIG. 4. FIG. 5B is a flowchart illustrating an authentication process and a billing system performed by the authentication device in the car sharing system in FIG. It is a flowchart which shows the charging process performed roughly.

Hereinafter, embodiments to which the present disclosure is applied will be described with reference to the drawings.
[1. First Embodiment]
[1-1. Constitution]
The glasses-type terminal 1 shown in FIGS. 1 and 2 includes a glass body 2, a measuring unit 3, a reproducing unit 4, a speaker 5, a communication unit 6, and a battery (not shown). The glasses-type terminal 1 may further include a microphone for voice input and a wireless telephone mechanism or a wireless communication mechanism.

  The glasses-type terminal 1 is supplied to a user at the time of use in a facility such as an art museum, a theater, a concert hall, or a vehicle such as an automobile, a railway car, a ship, or an aircraft. Further, the user may bring the glasses-type terminal 1 when using these facilities or vehicles.

<Glass body>
The glass body 2 has a frame 2A and two lenses 2B. The two lenses 2B may be prescription, but are not prescription when used in a facility or the like.

  Each lens 2B may be configured to display an image. Examples of the image displayed on the lens 2B include a guide map of a facility, a description of an exhibit, a description of a performance, a position or traffic information (that is, navigation information), a text of an email, a current time, and the like.

  In addition, the glass main body 2 does not necessarily need to have two lenses 2B, and may be single glasses having only one lens 2B.

<Measurement section>
The measuring unit 3 measures the acoustic characteristics of the outer ear of the user wearing the glass body 2. Specifically, the measuring unit 3 measures the transfer function of the outer ear as the acoustic characteristic of the outer ear. The acoustic characteristics measured by the measurement unit 3 are used as information for authenticating the user.

  The measurement unit 3 is disposed in a portion of the glass main body 2 that comes into contact with the user's outer ear (that is, a tip cell which is a tip of a vine). The measuring section 3 may be provided on either the left ear side or the right ear side of the glass body 2. Alternatively, two measuring units 3 may be provided on each of the left and right sides.

  As shown in FIG. 2, the measurement unit 3 includes a transducer 3A, a microphone 3B, a signal generation unit 3C, and a fast Fourier transformer (FFT) 3D.

  The vibrator 3A applies vibration to the pinna A1 of the user, and vibrates the cartilage A2 of the pinna A1. The frequency of the vibration of the vibrator 3A is controlled by the signal generator 3C. The signal generation unit 3C generates an output signal that causes the vibrator 3A to vibrate. The signal generator 3C also has an amplifier function for amplifying the output signal. The signal generation unit 3C also outputs the output signal to the FFT 3D.

  Due to the vibration of the vibrator 3A, the external auditory meatus A3 between the pinna A1 and the eardrum A4 is solidly vibrated, and a vibration sound is generated. The sound generated by the ear canal A3 is converted into an electric signal by the microphone 3B and output to the FFT 3D.

  The FFT 3D obtains the transfer function of the outer ear by a well-known fast Fourier transform using the electric signal of the vibration sound of the external auditory canal A3 input from the microphone 3B and the output signal input from the signal generator 3C. The transfer function obtained by the FFT 3D is output to the reproduction unit 4 and the communication unit 6. The measurement time of the transfer function is, for example, 5 seconds or more and 10 seconds or less.

  The transfer function calculated by the FFT 3D includes, for example, an amplitude, a phase, and the like per unit input with respect to an input frequency, and these can be used alone or in combination.

  Here, the “input frequency” is the frequency of the vibration of the vibrator 3A. The “amplitude per unit input” is a value obtained by dividing the amplitude by the output (sound intensity or input voltage) to the vibrator 3A, and is represented by an amplitude per 1 dB or 1V.

  FIG. 3A is a graph showing a relationship between an input frequency F, which is an example of a transfer function, and an amplitude A per unit input. FIG. 3B is a graph showing a relationship between an input frequency F and a phase P, which is an example of a transfer function. Since these transfer functions (that is, the shape of the graph) differ from person to person, they can be used as information for identifying an individual.

  Note that the measurement unit 3 may generate a vibration sound by exciting the external auditory meatus A3 with air using the speaker 5 instead of the vibrator 3A. That is, an output signal may be output from the signal generation unit 3C to the speaker 5.

  The transducer 3 </ b> A requires lower positional accuracy than the speaker 5. Therefore, by using the vibrator 3A as the vibration input unit, the configuration of the measuring unit 3 is simplified, and the user's wearability is improved. On the other hand, the output of the speaker 5 is larger than that of the vibrator 3A. Therefore, by using the speaker 5 as the vibration input unit, the measurement unit 3 can be downsized.

<Playback part>
The reproducing unit 4 generates a noise canceling signal based on the acoustic characteristics (that is, the transfer function) measured by the measuring unit 3.

  The noise canceling signal is a signal that is acoustically out of phase with the surrounding noise. The reproducing unit 4 generates a noise canceling signal for the measured surrounding noise using an algorithm that refers to the transfer function of the individual.

  In addition, the reproducing unit 4 has a function of improving the accuracy of the generated noise canceling signal by a feedback mechanism using the detected error (that is, noise that could not be canceled).

  The reproducing unit 4 outputs the noise canceling signal to the speaker 5 as an audio signal in which the noise canceling signal is combined with another output signal (for example, music, a message, a call voice, or the like) or as an audio signal of the noise canceling signal alone.

<Speaker>
The speaker 5 reproduces an audio signal including the noise canceling signal output from the reproduction unit 4. Further, the speaker 5 may be used as a vibration input unit of the measurement unit 3. That is, the speaker 5 can also output a signal for transfer function measurement. One speaker 5 may be provided on each of the left and right sides of the glass body 2.

<Communication unit>
The communication unit 6 transmits the acoustic characteristics (that is, the transfer function) measured by the measurement unit 3 to the external authentication device 11 (see FIG. 4) as authentication data.

  The communication unit 6 can receive a signal from an external device such as the authentication device 11. The signal received by the communication unit 6 from the external device includes an authentication result, image data displayed on the glass body 2, audio data output from the speaker 5, and the like.

  Note that the signal generation unit 3C and the FFT 3D of the measurement unit 3, the reproduction unit 4, and the communication unit 6 may be arranged in a battery unit (not shown) separated from the glass main body 2. The battery unit has a built-in battery and supplies power to the glass body 2 wirelessly.

  The signal generator 3C and the FFT 3D provided in the battery unit, and the vibrator 3A, the microphone 3B, and the speaker 5 provided in the glass body 2 transmit and receive signals wirelessly.

[1-2. effect]
According to the embodiment described in detail above, the following effects can be obtained.
(1a) By wearing the glasses-type terminal 1, personal authentication of the user can be performed using the acoustic characteristics of the outer ear that are difficult to forge. Therefore, by providing the glasses-type terminal 1 in a facility or a vehicle that provides information to the glass body 2, personal authentication can be performed without separately attaching a user to an authentication device.

  (1b) Noise can be canceled by the reproduction unit 4 and the speaker 5 in accordance with the personality of the user based on the acoustic characteristics used for personal authentication. As a result, voice can be efficiently transmitted to the user in a sound field space suitable for voice transmission.

[2. Second Embodiment]
[2-1. Constitution]
The car sharing system 100 shown in FIG. 4 includes a personal authentication system 10 and a billing system 20.

<Personal authentication system>
The personal authentication system 10 is a car-sharing personal authentication system including the glasses-type terminal 1 and the authentication device 11.

  The authentication device 11 authenticates a user wearing the glasses-type terminal 1 (that is, using the car-sharing vehicle 30) based on the acoustic characteristics measured by the measurement unit 3 of the glasses-type terminal 1. The authentication device 11 also performs a process of registering a user who uses the personal authentication system 10.

  The authentication device 11 unlocks the security lock of the vehicle 30 used by the user wearing the authenticated glasses-type terminal 1 among the plurality of vehicles 30 provided for car sharing, for example, by wireless communication. . If the user cannot be authenticated, the authentication device 11 maintains the security lock of the vehicle 30. The authentication may be performed before the user gets on the vehicle 30 or after the user gets on the vehicle 30.

  The authentication device 11 has a usage information collecting function of acquiring usage information such as a usage time and a vehicle type of the vehicle 30 used by the authenticated user from each vehicle 30. The usage information acquired by the authentication device 11 is transmitted to the billing system 20.

  The authentication device 11 obtains information to be displayed on the lens 2 </ b> B and / or output from the speaker 5 from a database, an external server, or the like connected to the authentication device 11 and transmits the information to the glasses-type terminal 1. Has a communication function.

  The authentication device 11 is installed separately from the glasses-type terminal 1 and the plurality of vehicles 30. The authentication device 11 is realized by, for example, a server installed in a data center or the like. Note that authentication of a plurality of glasses-type terminals 1 may be performed simultaneously by one authentication device 11.

  The authentication device 11 may be configured as a single device, or may be configured as a combination of a plurality of devices. The plurality of devices constituting the authentication device 11 may be geographically separated from each other and configured to communicate with each other via wired or wireless communication.

  By providing the glasses-type terminal 1 with added value such as a car navigation function and an audio function, these functions can be omitted from each vehicle 30. As a result, the cost of each vehicle 30 can be reduced.

<Billing system>
The billing system 20 performs a billing process according to the use of the vehicle 30 for the user authenticated by the authentication device 11.

  Specifically, the billing system 20 calculates the usage amount of the user based on the usage information of the vehicle 30 acquired by the authentication device 11, such as the usage time and the vehicle type. The billing system 20 totals the usage amount, for example, every month, and charges the user for the usage amount.

  The billing system 20 may be configured to calculate a part of the usage amount as the acquisition amount of the provider of the glasses-type terminal 1 and distribute the acquisition amount to the provider based on the amount collected from the user. Thereby, the user can acquire or borrow the glasses-type terminal 1 free of charge or at low cost.

[2-2. processing]
Hereinafter, the user registration process performed by the authentication device 11 will be described with reference to the flowchart of FIG. 5A.

  In the present process, the authentication device 11 first receives input of personal information such as a name and contact information from the user, and acquires the acoustic characteristics of the user's outer ear measured by the glasses-type terminal 1 (step S110).

  After the measurement of the acoustic characteristics, the authentication device 11 associates the personal information with the acoustic characteristics and registers the data in the server (step S120). After the data registration, the authentication device 11 issues a unique ID to the user and registers the ID (step S130).

  Next, the use process including the authentication process performed by the authentication device 11 and the billing process performed by the billing system 20 will be described with reference to the flowchart of FIG. 5B.

  In this process, first, the authentication device 11 determines whether or not the user ID authentication has succeeded (step S210). Specifically, it is determined whether the ID of the user who has applied for the use of the specific vehicle 30 matches the ID based on the acoustic characteristics of the outer ear of the user measured by the glasses-type terminal 1.

  When the ID authentication is successful (S210: YES), the authentication device 11 unlocks the security of the vehicle 30 (Step S220). If the ID authentication has failed (S210: NO), the authentication device 11 maintains the security lock of the vehicle 30, and ends this processing.

  After the lock is released by the authentication device 11, the authentication device 11 waits until the use of the vehicle 30 ends (step S230). When the use of the vehicle 30 is completed (S230: YES), the authentication device 11 provides usage information to the charging system 20, and the charging system 20 determines a usage fee (step S240). The authentication device 11 locks the security of the vehicle 30.

  After determining the usage fee, the charging system 20 bills the usage fee to the user (step S250) and pays the usage fee to the provider of the glasses-type terminal 1 (step S260). Note that the billing of the usage fee and the payment of the usage fee do not need to be performed sequentially, and may be executed in a batch process at regular intervals (for example, one month).

[2-3. effect]
According to the embodiment described in detail above, the following effects can be obtained.
(2a) Since the authentication device 11 is separated from the glasses-type terminal 1, information for personal authentication can be centrally managed at a site geographically separated from the vehicle used by the user.

(2b) The glasses-type terminal 1 can be used as a device having both a vehicle driving support function for car sharing and a personal authentication function.
(2c) In a car sharing service in which a plurality of users share the vehicle 30, it is possible to easily and reliably perform personal authentication of the user and collection of a usage fee for the user.

[3. Other Embodiments]
As described above, the embodiments of the present disclosure have been described, but it is needless to say that the present disclosure is not limited to the above-described embodiments, and can take various forms.

(3a) The glasses-type terminal 1 of the above embodiment does not necessarily need to include the speaker 5. That is, the glasses-type terminal 1 does not necessarily need to have the sound output function.
(3b) The glasses-type terminal 1 of the above embodiment does not necessarily need to include the communication unit 6. That is, the whole or a part of the authentication device 11 of the personal authentication system 10 may be incorporated in the glasses-type terminal 1.

  (3c) The personal authentication system 10 of the above embodiment can be used for purposes other than car sharing. The personal authentication system 10 can also be used for personal authentication of, for example, visitors in facilities such as museums, theaters, and concert halls, or passengers of cars, rail cars, ships, aircraft, and the like.

  (3d) The functions of one component in the above embodiment may be distributed as a plurality of components, or the functions of a plurality of components may be integrated into one component. Further, a part of the configuration of the above embodiment may be omitted. Further, at least a part of the configuration of the above-described embodiment may be added to or replaced with the configuration of another above-described embodiment. Note that all aspects included in the technical idea specified by the language described in the claims are embodiments of the present disclosure.

DESCRIPTION OF SYMBOLS 1 ... Glasses type terminal, 2 ... Glass body, 2A ... Frame, 2B ... Lens, 3 ... Measuring part,
3A: vibrator, 3B: microphone, 3C: signal generation unit, 3D: FFT, 4: reproduction unit,
5 speaker, 6 communication unit, 10 personal authentication system, 11 authentication device,
20: billing system, 30: vehicle, 100: car sharing system.

Claims (7)

Glass body,
A measurement unit that measures the acoustic characteristics of the outer ear of the user wearing the glass body,
With
The glasses-type terminal, wherein the acoustic characteristics measured by the measurement unit are used as information for authenticating the user. The glasses-type terminal according to claim 1,
A reproducing unit that generates a noise canceling signal based on the acoustic characteristics,
A speaker for reproducing an audio signal including the noise canceling signal;
A glasses-type terminal further comprising: The glasses-type terminal according to claim 1 or claim 2,
The glasses-type terminal, wherein the acoustic characteristic is a transfer function. The glasses-type terminal according to any one of claims 1 to 3, wherein
The glasses-type terminal, further comprising: a communication unit configured to transmit the acoustic characteristic measured by the measurement unit to an external authentication device. The glasses-type terminal according to any one of claims 1 to 4,
An authentication device that authenticates the user based on the acoustic characteristics measured by the measurement unit,
A personal authentication system comprising: The personal authentication system according to claim 5, wherein
A personal authentication system, wherein the authentication device authenticates the user who uses a car-sharing vehicle. A personal authentication system according to claim 6,
A charging system that performs a charging process in accordance with the use of the vehicle for the user authenticated by the authentication device;
A car sharing system.

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