JP3749219B2 - Telephone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a telephone provided with voiceprint authentication means for performing user authentication using a voiceprint.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, mobile phones have a lock function for the purpose of protecting privacy and preventing unauthorized use of the phone by others. When the user activates the lock function of the mobile phone, the mobile phone enters the lock mode. Unless the user is authenticated as a legitimate user, the lock mode is not released and functions such as outgoing calls and address book display are performed. Limited.
[0003]
A user authentication method that is currently introduced in the lock function of many mobile phones is a password authentication method that performs user authentication using a password made up of a character string set by a legitimate user. However, in password authentication, it is necessary to change the password from time to time in order to prevent a decrease in security. In addition, considering the operability of the operation buttons and the button configuration provided in the mobile phone, the complexity of password entry cannot be denied.
[0004]
Therefore, development of mobile phones equipped with user authentication means applying biometrics technology is underway. The biometric technology is a technology for recognizing a user based on characteristics of an individual organism, and examples of characteristics used include a fingerprint, a face, a voiceprint, and a retina. The advantage of user authentication using biometrics is that it is not necessary to enter complicated passwords as in conventional password authentication, and user authentication is performed as long as the characteristics of the user are presented as they are.
[0005]
In the case of a mobile phone, since a microphone is provided, application of user authentication using a voiceprint (hereinafter referred to as “voiceprint authentication”) is considered. A voiceprint is a pattern that visually displays three-dimensionally the sound of a human voice at what time and at what frequency by a machine called a sonograph. In voiceprint authentication, a voiceprint of a specific phrase uttered by a user or a voiceprint is extracted from a voice uttered for a predetermined time as a digital value, and the voiceprint is compared with a voiceprint of a legitimate user stored in advance. Authenticate.
[0006]
The portable communication device disclosed in the patent document shown below has a voice identification function to prevent unauthorized use by others.
[0007]
[Patent Document 1]
JP-A-11-331367
[0008]
[Patent Document 2]
JP-A-8-223281
[0009]
[Problems to be solved by the invention]
By the way, since the lock function of the conventional mobile phone does not limit the response operation for incoming calls, the call start button is pressed while the ring tone is ringing, so that anyone can make a call Can do. This can lead to privacy infringement issues. For example, there is a case where an incoming call from a secret partner makes a call while impersonating another user.
[0010]
The same problem arises not only in mobile phones but also in general telephones, personal computers with telephone functions, and the like.
Such a problem can be solved by setting off-hook operation at the time of incoming call to be a restriction target of the lock function, but when receiving an incoming call, the human psychology of wanting to respond immediately works, so as a user authentication method to release the lock mode When a conventional password authentication method is applied, the complexity of password entry becomes a bottleneck, and there is a high possibility that it will not be accepted by the user.
[0011]
Accordingly, an object of the present invention is to provide a telephone that incorporates a device that makes it possible to easily perform user authentication using voiceprint authentication at the time of incoming call and to improve the accuracy of voiceprint extraction.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, a telephone according to the present invention is a telephone that notifies an incoming call with a ring tone, and includes a detecting means for detecting a specific operation by a user, and a specific operation by a user during an incoming call. If it is detected, whether the user is a legitimate user by using the first control means for controlling the output of the ringtone to be smaller than the current level or stopping the output and the voiceprint extracted from the voice input by the user And a voice print authentication means for performing authentication relating to whether or not, and a second control means that goes off-hook only when the voice print authentication means authenticates the user as a valid user.
[0013]
The control method according to the present invention is a telephone control method for notifying an incoming call with a ring tone, and detecting a specific operation by the user, and detecting a specific operation by the user during the incoming call. A first control step for controlling the ringtone output to be reduced or stopped, and a voiceprint extracted from the voice input by the user after the control is performed in the first control step. A voiceprint authentication step for performing authentication based on whether or not the user is a valid user, and a second control step for off-hooking when the user is authenticated as a valid user in the voiceprint authentication step. It is characterized by including.
[0014]
The control program according to the present invention is a control program used for a telephone having a detecting means for notifying an incoming call with a ring tone and detecting a specific operation by the user, and is specified by the user during the incoming call. When an operation is detected, the first control step for controlling the output of the ringtone to be smaller than the current state or stopping the output, and after the control is performed in the first control step, the input is performed by the user. A voiceprint authentication step for authenticating whether or not the user is a legitimate user using a voiceprint extracted from the voice, and off-hook when the user is authenticated as a legitimate user in the voiceprint authentication step And a second control step.
[0015]
As a result, in voiceprint authentication at the time of incoming call, when the voice uttered by the user is collected, the ringtone is not mixed as noise, so that the accuracy of voiceprint extraction can be improved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a telephone according to the present invention will be described below with reference to the drawings.
<Embodiment 1>
<Configuration>
FIG. 1 is a block diagram of a mobile phone 1 according to the present invention. The cellular phone 1 includes a voice input unit 11, a voice print authentication unit 12, an operation unit 15, a storage unit 16, a control unit 17, a ring tone adjustment unit 18, a transmission / reception unit 19, an output unit 20, and the like. Note that this block diagram shows only functional units necessary for explaining the features of the present invention, and other parts are omitted.
[0017]
The voice input unit 11 is connected to the control unit 17, the voiceprint authentication unit 12, and the storage unit 16, picks up the voice uttered by the user and converts it into a voice signal (analog signal), and further converts the voice signal into voice data. It has a function of converting it into (digital signal) and sending it to the voiceprint extraction unit 13. The voice input unit 11 performs voice collection based on an instruction from the control unit 17.
[0018]
The voiceprint authentication unit 12 is connected to the voice input unit 11, the storage unit 16, and the control unit 17, and includes a voiceprint extraction unit 13 and a voiceprint matching unit 14.
The voiceprint extraction unit 13 has a function of extracting voiceprint data as digital numerical values from the voice data transmitted from the voice input unit 11, and transmits the extracted voiceprint data to the voiceprint matching unit 14.
[0019]
The voiceprint collation unit 14 has a function of collating the voiceprint data transmitted from the voiceprint extraction unit 13 with the voiceprint data of the legitimate user stored in the storage unit 16 in advance.
The voiceprint authenticating unit 12 has a function of authenticating a user as a valid user if the voiceprint data is roughly matched as a result of collation. The result of user authentication is transmitted to the control unit 17.
[0020]
The operation unit 15 is connected to the control unit 17 and includes various operation buttons such as numeric keypad buttons 0 to 9, an execution button, and a call start button. Each function of each operation button is assigned by the control unit 17. When any of the operation buttons is pressed by the user, the operation unit 15 detects the press and transmits a signal for specifying the pressed operation button to the control unit 17.
[0021]
The storage unit 16 is an EPROM (Erasable Programmable Read Only Memory), and is connected to the voice input unit 11, the voiceprint authentication unit 12, and the control unit 17. The data stored in the storage unit 16 is voiceprint data, voice data, a telephone number registered by the user, and the like.
The ring tone adjustment unit 18 includes an output amplifier and the like, and is connected to the control unit 17 and the output unit 20. The ring tone adjustment unit 18 has a function of adjusting the output level of the ring tone based on an instruction from the control unit 17. The ring tone is output from the output unit 20 at the output level adjusted by the ring tone adjusting unit 18. At output level 0, output is stopped.
[0022]
The transmission / reception unit 19 is connected to the control unit 17 and has a function of transmitting / receiving communication data and a function of modulating / demodulating transmission communication data and demodulating reception communication data. Here, communication data refers to voice data for calls, packet data for mail, control data used for communication control, and the like.
The control unit 17 is configured by a CPU (Central Processing Unit), a DSP (Digital Signal Processor), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and according to a control program stored in the ROM. It has a function to control. For example, call control, voiceprint authentication control, and the like are performed. The control unit 17 receives the signal transmitted from the operation unit 15 and reflects various instructions from the user in the control. The control unit 17 is connected to the voice input unit 11, voiceprint authentication unit 12, operation unit 15, storage unit 16, ringtone adjustment unit 18, and transmission / reception unit 19.
[0023]
<Lock function>
Here, the lock function according to the present invention will be described.
The lock function is activated when the user presses the execution button for a long time (two seconds or more) if the voiceprint of the legitimate user is registered. Unless the mobile phone 1 in the lock mode is authenticated as a valid user by voiceprint authentication, execution of power-off, telephone call, incoming call response, address book display, etc. is restricted.
[0024]
The legitimate user's voiceprint registration is performed by the legitimate user setting the mobile phone 1 to the voiceprint registration mode. The voiceprint registration is performed by extracting voiceprint data from the voice of the legitimate user input to the voice input unit 11 by the voiceprint extraction unit 13 and storing the extracted voiceprint data in the storage unit 16.
Voiceprint authentication is activated when any one of the operation buttons is pressed while the mobile phone 1 is in the lock mode. When the user is authenticated as a valid user by voiceprint authentication, the lock mode is released.
[0025]
Next, a description will be given of the control that is performed when there is an incoming call to the mobile phone 1 in the lock mode.
FIG. 2 is a flowchart of the control performed when the mobile phone 1 in the lock mode receives a telephone call in the first embodiment. First, if there is an incoming call (step S1: Yes), the control unit 17 instructs the ringtone adjustment unit 18 to output a ringtone set in advance by the user at a set output level ( Step S2).
[0026]
Subsequently, when pressing of any one of the operation buttons is detected (step S3), the control unit 17 instructs the ringtone adjustment unit 18 to stop outputting the ringtone (step S4).
Subsequently, the control unit 17 instructs the voice input unit 11 to start collecting the voice, and the voice print authentication unit 12 is extracted from the voice print data extracted from the collected voice, and the voice print data of the legitimate user stored in the storage unit 16. Are verified to perform user authentication (step S5).
[0027]
As a result of the authentication in step S5, if the user is authenticated as a valid user (step S6), the line is connected off-hook (step S7).
As a result, the output of the ringtone is stopped, so that when the voice uttered by the user is collected, the ringtone is not mixed as noise, and the accuracy of voiceprint extraction can be improved.
<Embodiment 2>
Hereinafter, the telephone according to the second embodiment will be described. Since the configuration of the telephone according to the second embodiment is the same as the configuration described in the first embodiment, only the control flow, which is different from the first embodiment, will be described.
[0028]
FIG. 3 is a flowchart of the control performed when the mobile phone 1 in the lock mode receives a phone call in the second embodiment. The difference from the control described in the first embodiment is that in step S14, it is determined whether or not the other party telephone number of the incoming call is a telephone number stored in the mobile phone 1. In Japan, when a call is made, a service is provided to notify the caller information including the caller's phone number to the callee's phone, and it is possible to identify who the caller is using the notified phone number. it can.
[0029]
If it is determined in the above determination that the telephone number notified from the calling side is the telephone number stored in the storage unit 16 (step S14: Yes), the ring tone is stopped (step S15), and the voice print authentication is performed. Is performed (step S16).
If it is determined in the above determination that the call is not an incoming call from the telephone number stored in the storage unit 16 (step S14: No), the line is connected off-hook (step S18).
[0030]
As a result, voice print authentication is performed only in the case of an incoming call from the telephone number stored in the mobile phone 1, so that by storing the telephone number of the telephone partner that the other party does not want to be known to, You can prevent others from receiving incoming calls.
Further, it is also possible to accept a designation of a specific telephone number from among the telephone numbers stored in the storage unit 16 and perform voice print authentication only when a call is received from the designated telephone number.
<Embodiment 3>
Hereinafter, the telephone according to the third embodiment will be described. Since the configuration of the telephone according to the third embodiment is similar to the configuration described in the first embodiment, only the control flow, which is different from the first embodiment, will be described.
[0031]
FIG. 4 is a flowchart of the control performed when the mobile phone 1 in the lock mode receives a phone call in the third embodiment. The difference from the control described in the first embodiment is that when the user is not authenticated as a valid user in step S26, the process returns to step S22 and the stopped ringing tone is output again.
[0032]
Thus, an unauthorized user who has not been authenticated as a legitimate user can be emphasized and impressed with the fact that the user has not been authenticated, and psychological damage can be prevented, which is effective in preventing impersonation.
In addition, when the user is not authenticated as a legitimate user, it may be controlled to output a ringtone by raising the level from the set output level, or a warning sound instead of a normal ringtone. Control may be performed so that the output is changed.
<Embodiment 4>
Hereinafter, the telephone according to the fourth embodiment will be described. Since the configuration of the telephone according to the fourth embodiment is the same as that described in the first embodiment, only the control flow, which is different from the first embodiment, will be described.
[0033]
FIG. 5 is a flowchart of control performed when the mobile phone 1 in the lock mode receives a telephone call in the fourth embodiment. The difference from the control described in the first embodiment is that in step S35, a voiceprint is extracted from the input voice, and the voice is stored in the storage unit 16, and the user is authenticated as a valid user ( In step S36: Yes), the stored voice is transmitted to the calling telephone (step S37).
[0034]
As a result, voiceprint authentication is performed by extracting voiceprints from phrases commonly used in telephone conversations such as “Hello” or “Yes, XX (user name)”. Since the phrase is transmitted to the other party's telephone, it is not necessary to repeat the same phrase again, so that seamless user authentication can be realized.
<Embodiment 5>
Hereinafter, the telephone according to the fifth embodiment will be described. Since the configuration of the telephone according to the fifth embodiment is the same as the configuration described in the first embodiment, only the control flow, which is different from the first embodiment, will be described.
[0035]
FIG. 6 is a flowchart of control performed when a call is received by the mobile phone 1 in the lock mode in the fifth embodiment. The difference from the control described in the first embodiment is that when the user is authenticated as a valid user in step S46 (step S46: Yes), the voiceprint extracted from the input voice is registered in step S47. The point is to update the registered voiceprint by replacing it with the voiceprint.
[0036]
Since the voiceprint gradually changes with the age of the user, it may be considered that the user is suddenly no longer authenticated as a legitimate user, even though he is a legitimate user. Therefore, if the registered voiceprint is updated every time it is authenticated as a valid user in the voiceprint authentication, such a problem can be prevented.
<Supplement>
Needless to say, the present invention is not limited to the above embodiments. The following cases are also included in the present invention.
(1) In each embodiment, the present invention has been described by taking a mobile phone as an example. However, the present invention may be a wired general telephone, a wireless slave, or a device such as a personal computer having a telephone function.
(2) The voice that the user must utter during voiceprint authentication may be either a keyword or a free keyword.
(3) In the first embodiment, the output of the ringtone is stopped when the incoming call is received when the mobile phone 1 is in the lock mode. However, even if control is performed so that the output of the ringtone is reduced. Good.
(4) The present invention may be a telephone that always performs voiceprint authentication for incoming calls regardless of the setting of the lock mode.
(5) When the user is authenticated as a valid user, the user may be notified of the authentication. For example, the user may be notified of the authentication by outputting a predetermined sound effect. If the telephone has an LED (Light Emitting Diode), the LED may emit light to notify the authentication, and if it has an LCD (Liquid Crystal Display), it is authenticated by the LCD. An animation or character information indicating this may be displayed, and if a vibration device is provided, the authentication may be notified by vibrating.
(6) In each embodiment, the control to stop the ringtone is performed before voiceprint authentication is performed. However, when the incoming call is set to be notified by vibration, the magnitude of vibration is made smaller than the current state or You may make it perform control which stops a vibration.
(7) In voiceprint authentication, a warning sound may be output when a user is not authenticated as a valid user.
(8) In the first embodiment, when the cellular phone 1 is in the lock mode, the voiceprint authentication is started by detecting the pressing of any one of the operation buttons. In the case of a telephone, voice print authentication may be started by detecting that the casing of the telephone is changed from a closed state to an open state. If the antenna of the mobile phone 1 is an extendable antenna, the antenna is contracted. The voiceprint authentication may be started by detecting that the state has been extended from the normal state. Furthermore, a contact sensor may be provided in the phone casing, and voice print authentication may be started by detecting that the user has touched the phone.
(9) The present invention may be the control method shown in the above embodiment. Further, the control method may be a control program realized by a computer, or may be a digital signal composed of the control program.
(10) The present invention provides a computer-readable recording medium for the control program or the digital signal, such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray). Disc) or recorded in a semiconductor memory or the like.
(11) The present invention may transmit the control program or the digital signal via an electric communication line, a wireless or wired communication line, a network represented by the Internet, or the like.
[0037]
【The invention's effect】
As described above, the telephone according to the present invention is a telephone that notifies the incoming call by a ring tone, and detects the specific operation by the user and detects the specific operation by the user during the incoming call. In this case, the first control means for controlling the output of the ringtone to be smaller than the current level or stopping the output, and the voiceprint extracted from the voice input by the user after the control by the first control means is performed. A voiceprint authenticating unit that performs authentication as to whether or not the user is a valid user, and a second control unit that goes off-hook only when the voiceprint authenticating unit authenticates the user as a valid user; It is characterized by providing.
[0038]
As a result, in voiceprint authentication at the time of incoming call, the accuracy of voiceprint extraction can be improved because the incoming sound is not mixed as noise when collecting the voice uttered by the user.
Further, when the voiceprint authentication means does not authenticate the user as a legitimate user, the first control means returns the ringtone output narrowed down to the original output or resumes the output of the stopped ringtone. It is good also as providing the 3rd control means which controls.
[0039]
In addition, when the voiceprint authentication unit does not authenticate the user as a legitimate user, the first control unit outputs a ringing tone that is reduced by the first control unit, or outputs a stopped ringing tone. It is good also as providing the 4th control means which performs control which restarts by the output larger than the original output.
Thus, an unauthorized user who has not been authenticated as a legitimate user can be emphasized and impressed with the fact that the user has not been authenticated, and psychological damage can be prevented, which is effective in preventing impersonation.
[0040]
Further, the telephone according to the present invention is a telephone for notifying the incoming call by vibration, and detecting means for detecting the specific operation by the user, and when the specific operation by the user is detected during the incoming call, First control means for controlling the size to be smaller than the current state or stopping vibration, and the user using the voiceprint extracted from the voice input by the user after the control by the first control means is performed. A voiceprint authentication means for performing authentication relating to whether or not the user is a legitimate user, and a second control means that goes off-hook only when the voiceprint authentication means authenticates the user as a legitimate user. And
[0041]
As a result, in voiceprint authentication at the time of incoming call, since the voice generated by the user is not collected as noise when collecting the voice uttered by the user, the accuracy of voiceprint extraction can be improved.
The voiceprint authentication unit may further include an output unit that outputs a sound when the user is not authenticated as a valid user.
[0042]
As a result, when the user is not authenticated as a legitimate user, a sound is output, so that the fact that the user was not authenticated can be emphasized and impressed, and psychological damage can be done. It is effective for prevention.
Further, the telephone is based on storage means for storing a telephone number and caller information transmitted when a telephone call is received, and whether or not the incoming call is made from a telephone number stored in the storage means. And determining means for determining whether the incoming call is made by calling from a telephone number stored in the storage means. Also good.
[0043]
As a result, the user can store the telephone number of the telephone partner that the other party does not want to be known by another person so that the other person cannot receive the incoming call from the telephone partner.
The telephone further includes a specification receiving unit that receives a designation of a specific telephone number from the telephone numbers stored in the storage unit, and the determination unit receives the incoming call by the designation receiving unit. It may be determined whether or not the call originates from a specific telephone number.
[0044]
As a result, the user can specify the phone number of the other party that the other party does not want to be known from among the phone numbers stored in the phone, so that the voice print authentication is performed only when a call is received from the specified phone number. You can go and prevent others from taking it.
In addition, the telephone stores voice stored by the voice storage means when the voice input by the user is stored and the voice print authentication means authenticates the user as a valid user. Transmission means for transmitting to the caller telephone may be further provided.
[0045]
As a result, voiceprint authentication is performed by extracting voiceprints from phrases commonly used in telephone conversations such as “Hello” or “Yes, XX (user name)”. Since the phrase is transmitted to the other party's telephone, it is not necessary to repeat the same phrase again, so that seamless user authentication can be realized.
[0046]
In addition, the telephone is input by the user when the voiceprint storage unit stores the first voiceprint extracted from the voice input by the authorized user and when the user is authenticated by the voiceprint authentication unit. It is good also as providing the voiceprint update means which replaces and memorize | stores the 2nd voiceprint extracted from the produced | generated sound with the said 1st voiceprint.
[0047]
Since the voiceprint gradually changes with the age of the user, it may be considered that the user is suddenly no longer authenticated as a legitimate user, even though he is a legitimate user. Therefore, if the registered voiceprint is updated every time it is authenticated as a valid user in the voiceprint authentication, such a problem can be prevented.
The voiceprint authentication unit may further include an authentication notification unit that notifies the user that the user is authenticated when the user is authenticated as a valid user.
[0048]
Thus, the user can recognize that the telephone has authenticated the user.
[Brief description of the drawings]
FIG. 1 is an example of a block configuration diagram of a telephone according to the present invention.
FIG. 2 is an example of a control flow when a telephone call according to the present invention is received.
FIG. 3 is an example of a control flow when a telephone call according to the present invention is received.
FIG. 4 is an example of a control flow when a telephone call according to the present invention is received.
FIG. 5 is an example of a control flow when a telephone call according to the present invention is received.
FIG. 6 is an example of a control flow when a telephone call according to the present invention is received.
[Explanation of symbols]
1 Mobile phone
11 Voice input part
12 Voiceprint authentication department
13 Voiceprint extraction unit
14 Voiceprint matching part
15 Operation unit
16 Memory unit
17 Control unit
18 Ringtone adjuster
19 Transceiver

Claims (16)

A phone that notifies you of incoming calls with a ring tone,
Detection means for detecting a specific operation by the user;
First control means for performing control to reduce the output of the ringtone to be smaller than the current state or stop the output when a specific operation by the user is detected during an incoming call;
A voiceprint authenticating unit that performs authentication related to whether or not the user is a valid user using a voiceprint extracted from the voice input by the user after the control by the first control unit;
And a second control unit that goes off-hook only when the user is authenticated by the voiceprint authentication unit. When the voiceprint authentication means does not authenticate the user as a legitimate user, the first control means returns the output of the ringtone that has been narrowed down to the original output or resumes the output of the stopped ringtone. The telephone set according to claim 1, further comprising third control means for performing the operation. When the voiceprint authentication means does not authenticate the user as a legitimate user, the first control means reduces the ringtone output, which has been reduced by the first control means, to be larger than the original output, or the output of the stopped ringtone is the original The telephone set according to claim 1, further comprising fourth control means for performing control to resume at an output larger than the output of. A phone that notifies of incoming calls by vibration,
Detection means for detecting a specific operation by the user;
First control means for performing control to reduce the magnitude of vibration from the current level or stop vibration when a specific operation by the user is detected during an incoming call;
A voiceprint authenticating unit that performs authentication related to whether or not the user is a valid user using a voiceprint extracted from the voice input by the user after the control by the first control unit;
And a second control unit that goes off-hook only when the user is authenticated by the voiceprint authentication unit. 5. The telephone according to claim 1, further comprising output means for outputting a sound when the voiceprint authentication means does not authenticate the user as a legitimate user. The telephone is
Storage means for storing a telephone number;
Determination means for determining whether or not the incoming call is a call from a telephone number stored in the storage means, based on caller information transmitted at the time of incoming call;
6. The voice print authentication unit performs authentication when it is determined that the incoming call is a call from a telephone number stored in the storage unit. The telephone set forth in claim 1. The telephone further includes a designation receiving means for accepting designation of a specific telephone number from a user among the telephone numbers stored in the storage means,
7. The telephone according to claim 6, wherein the determination unit determines whether the incoming call is a call from a specific telephone number received by the designation receiving unit. The telephone has voice storage means for storing voice input by the user;
2. The apparatus according to claim 1, further comprising: a transmission unit configured to transmit the voice stored in the voice storage unit to the calling telephone when the user is authenticated as a valid user by the voiceprint authentication unit. The telephone set of any one of thru | or 7. The telephone includes voiceprint storage means for storing a first voiceprint extracted from voice input by a legitimate user;
When the voice print authentication unit authenticates the user as a valid user, the voice print update unit further includes a voice print update unit that stores the second voice print extracted from the voice input by the user by replacing the first voice print. The telephone set according to any one of claims 1 to 8, characterized in that: The authentication notification means for notifying the user that the user has been authenticated when the voice print authentication means authenticates the user as a valid user. Phone. The telephone according to claim 1, wherein the detection unit detects that an operation button provided on the telephone is pressed by a user. The telephone is a foldable mobile phone,
11. The telephone set according to claim 1, wherein the detection unit detects that the telephone set is changed from a closed state to an open state by a user. The phone is a mobile phone equipped with a telescopic antenna,
The telephone according to any one of claims 1 to 10, wherein the detection means detects that the user has extended the telescopic antenna from a contracted state to an extended state. The telephone according to claim 1, wherein the detection means is a contact sensor and detects that the telephone is touched by a user. A telephone control method for notifying incoming calls with a ring tone,
A detection step for detecting a specific operation by the user;
A first control step for controlling the output of the ringtone to be reduced or stopped when a specific operation by the user is detected during an incoming call;
A voiceprint authentication step for performing authentication relating to whether or not the user is a valid user using a voiceprint extracted from the voice input by the user after the control is performed in the first control step;
And a second control step of off-hooking when the user is authenticated as a valid user in the voiceprint authentication step. A control program used for a telephone provided with a detecting means for notifying an incoming call with a ring tone and detecting a specific operation by a user,
A first control step for controlling the output of the ringtone to be smaller than the current level or stopping the output when a specific operation by the user is detected during an incoming call;
A voiceprint authentication step for performing authentication relating to whether or not the user is a valid user using a voiceprint extracted from the voice input by the user after the control is performed in the first control step;
And a second control step for off-hooking when the user is authenticated as a valid user in the voiceprint authentication step.

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