JP6626855B2 - Communication system and its authentication method - Google Patents

Description

  The present invention relates to a communication system and an authentication method thereof, and more particularly, to a communication system and an authentication method suitable for displaying the contents of a call on an information processing terminal when performing voice translation of a telephone terminal.

  Automatic Speech Translation recognizes the input human voice, converts it into text, automatically translates the text in the input language into text in the target language, and converts the translated text into speech in the target language And output it.

  In the automatic speech translation, since the performance of language recognition is limited, erroneous recognition and erroneous translation may occur. Especially when using automatic speech translation in an environment where the contents of the conversation are not displayed on the display, if you feel that you can not communicate well with the other party, whether the contents you spoke are misrecognized or mistranslated Because it is difficult to judge, it is difficult to have a smooth conversation. Therefore, it is desired to provide a service for displaying conversation contents. As a technology for recognizing a telephone call by voice and displaying the voice on a monitor, there is, for example, Patent Document 1. The speech translator disclosed in Patent Literature 1 describes that speech-translated contents are output to a monitor (paragraph number 0021, FIG. 2).

  By the way, in general, a telephone system and an information processing system for displaying conversation contents are separate systems, and these must be securely linked in order to protect the conversation contents from spoofing and information leakage.

  The authentication for linking the telephone system with another information processing system is disclosed in, for example, Patent Document 2. Patent Literature 2 describes that personal authentication for registering a sentence example for speech translation is performed by a personal authentication server (paragraph numbers 0008 and 0013, FIG. 4).

  Further, as a technique related to personal authentication in a general communication network, there is, for example, Patent Document 3. In the user authentication of Patent Document 3, first authentication is performed using an ID and a password, a confirmation code is transmitted to an e-mail address where the system is registered, and the user inputs the confirmation code into a computer to perform second authentication. (Summary).

JP-A-9-146584 JP 2002-125047 A JP-A-2002-251375

  In personal authentication using a user ID, a password, or the like described in Patent Literature 2, there is a risk that the contents of a conversation may be leaked due to impersonation or the like. In addition, authentication using voices such as voiceprints issued by individuals requires high security but requires registration of voiceprints of all users, and cannot be used easily. In addition, although authentication based on characteristics of a living body such as a fingerprint and an iris has high security, it cannot be easily used because authentication equipment on the user side is required.

  Further, in the authentication method described in Patent Literature 3, a two-step authentication is performed by notifying a confirmation code (authentication code) using an electronic mail and allowing the user to input it.

  However, in the authentication method described in Patent Literature 3, since authentication is performed using e-mail, a user who does not have an e-mail address cannot use the service. There is an annoyance that the service cannot be used unless the address is registered in the service.

  In addition, when the authentication method described in Patent Document 3 is applied to authentication of an information processing terminal in a speech translation system using a telephone terminal, if a telephone number, an e-mail address, and a password are leaked, one-time confirmation is performed. Even if the code was used, when the e-mail arrived at the malicious person, the verification code was used to successfully authenticate, and after that, access the call content display page to I can see it. In other words, there is a danger that the contents of the call can be continued unless the user notices that the e-mail address and the password are leaked.

  An object of the present invention is to avoid the risk of stealing a user ID and a password in a communication system that displays the contents of automatic translation of voice by a telephone terminal on an information processing terminal, and to use a special authentication device or an e-mail address. It is an object of the present invention to provide a communication system and an authentication method thereof that can increase security without being required.

  The communication system according to the present invention is preferably a communication system in which a telephone terminal, an information processing terminal, and a communication server are connected by a network, wherein the communication server includes: a unit that registers a telephone number of the telephone terminal; Means for generating an authentication code corresponding to, a means for generating a synthesized voice of the generated authentication code and outputting it to the telephone terminal, and a means for receiving the authentication code from the information processing terminal. It holds an authentication table that stores the correspondence of authentication codes.

  Then, the communication server verifies the matching between the authentication code corresponding to the telephone number of the telephone terminal and the authentication code received from the information processing terminal, and the authentication code corresponding to the telephone number of the telephone terminal held in the authentication table; When the authentication code received from the information processing terminal matches, the information relating to the contents of the call is transmitted to the information processing terminal.

  Further, the communication system according to the present invention is preferably a communication system in which a telephone terminal, an information processing terminal, and a communication server are connected via a network, wherein the communication server registers a telephone number of the telephone terminal, Means for generating an authentication code corresponding to the telephone number; means for outputting the generated authentication code to the information processing terminal; and means for receiving and encoding a DTMF signal from the telephone terminal. It holds an authentication table that stores the correspondence of the authentication codes.

  The communication server verifies that the authentication code corresponding to the telephone number of the telephone terminal stored in the authentication table matches the coded authentication code received from the DTMF signal received from the telephone terminal, and stores the authentication code in the authentication table. When the authentication code corresponding to the entered telephone number of the telephone terminal matches the coded authentication code received and encoded from the DTMF signal received from the telephone terminal, information relating to the contents of the call is transmitted to the information processing terminal. It is like that.

  According to the present invention, in a communication system that displays the content of automatic translation of voice by a telephone terminal on an information processing terminal, the risk of stealing a user ID or a password is avoided, and a special authentication device and an e-mail address are used. It is possible to provide a communication system and an authentication method thereof that do not need to be able to enhance security.

1 is an overall configuration diagram of a communication system. It is a functional block diagram of a telephone terminal. It is a functional block diagram of an information processing terminal. It is a functional block diagram of a communication server. FIG. 4 is a diagram illustrating an example of an authentication table. FIG. 4 is a sequence diagram showing an outline operation of the communication system. It is a figure showing an example of a call content display screen. FIG. 3 is a sequence diagram illustrating an outline of an authentication process according to the first embodiment. It is a flowchart which shows a telephone number input process (A100: information processing terminal-> communication server). It is a flowchart which shows an authentication code audio | voice output process (A101a: Communication server-> telephone terminal). It is a flowchart which shows an authentication code input process (A102a: information processing terminal-> communication server). It is a figure showing an example of an attestation code input screen (the 1). It is a figure showing an example of an attestation code input screen (the 2). FIG. 11 is a diagram illustrating an example of a message screen when an error occurs in an input authentication code (part 1). FIG. 11 is a diagram illustrating an example of a message screen when an error occurs in the input authentication code (part 2). FIG. 4 is a sequence diagram illustrating details of an authentication process of the communication system according to the first embodiment. FIG. 13 is a sequence diagram illustrating an outline of an authentication process according to the second embodiment. It is a flowchart which shows an authentication code output process (A101b: Communication server-> information processing terminal). It is a flowchart which shows an authentication code input process (A102b: telephone terminal-> communication server). It is a figure showing an example of an attestation code input screen. FIG. 11 is a diagram illustrating an example of a message screen when an error occurs in an input authentication code. FIG. 14 is a sequence diagram illustrating details of an authentication process according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 20.

[Embodiment 1]
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS.

First, the configuration of the communication system according to the first embodiment will be described with reference to FIGS.
As shown in FIG. 1, the communication system of the present embodiment has a form in which a telephone terminal 10, an information processing terminal 200, and a communication server 100 are connected by a network 5.

  The telephone terminal 10 and the communication server 100 establish a telephone connection by a telephone line protocol, and the information processing terminal 200 and the communication server 100 perform data communication through an IP network.

The communication server 100 decodes an audio signal transmitted via the network (telephone line) 5, converts it into audio, translates it into audio according to a specified language, encodes the audio, and This is a device for transmitting to the telephone terminal 10 via a line.
In addition, the communication server 100 has a function of creating data for displaying a content related to a call, a translated text of the call, and a screen related to authentication on the information processing terminal 200, and transmitting the data to the information processing terminal 200.

  The information processing terminal 200 has a function of receiving the screen data created by the communication server 100 and displaying the contents related to the call, the translated text of the call, and a screen related to authentication. Further, the user inputs information related to authentication from the information processing terminal 200.

  The telephone terminal 10 needs to be a telephone capable of transmitting a DTMF (Dual-Tone Multi-Frequency) signal (so-called push signal). The DTMF signal is a combination of numbers from 0 to 9 and symbols of *, #, A, B, C, and D, which are a total of 16 types of low-level and high-level synthesized signal sounds in two audio frequency bands. This is the signal to be transmitted. The line connected to the telephone terminal 10 is a line that can transmit a DTMF signal.

  As shown in FIG. 2, the telephone terminal 10 includes a receiver 11, a transmitter 12, a key device 13, a voice signal converter 14, a connection controller 15, and a DTMF signal generator 16. The receiver 11 and the transmitter 12 are a speaker for receiving and a microphone for transmitting, respectively. The voice signal conversion unit 14 is a part that converts an electric signal from a telephone line into a voice and converts the voice from the transmitter 12 into a voice signal. The connection control unit 15 is a part that controls incoming and outgoing calls to connect and disconnect the line with the telephone terminal 10. The DTMF signal generation unit 16 is a device that generates a DTMF signal of a predetermined frequency in accordance with an input from the key device 13.

  The information processing terminal 200 is realized by an information processing apparatus having a general network function and a screen input / output function. As shown in FIG. 3, the information processing terminal 200 includes a display control unit 201, an input / output control unit 202, It has respective functional units of a connection control unit 203 and a storage unit 204. The display control unit 201 controls display of display data transmitted from the communication server 100 on a display device. The input / output control unit 202 is a part that controls input and output from the user to the input / output device. The connection control unit 203 is a part that controls a network connection with the communication server 100 via the network 5. The storage unit 204 is a unit that stores a program executed by the information processing terminal 200, screen display data 210, and input data 220 from a user. Each function of the information processing terminal 200 can be realized by executing a program stored in the storage unit 204 by a CPU (Central Processing Unit).

  The input / output data of the screen is, for example, an HTML (HyperText Markup Language) file transmitted from the communication server 100, and the information processing terminal 200 can be realized by a general Web browser as the display control unit 201. it can.

  The information processing terminal 200 is not limited to a general PC (Personal Computer), but may be a tablet, a smartphone, or the like.

  The communication server 100 is a server device that provides a function of automatically translating the contents of a call exchanged with the telephone terminal 10, transmitting the translated language by voice, and displaying the translated information on the information processing terminal 200. Yes, as shown in FIG. 4, it comprises a Web management unit 110, a call management unit 130, a database access unit 120, and a database 140.

  The Web management unit 110 is a part that manages Web page data and controls the exchange of Web pages with the information processing terminal 200. The Web management unit 110 is connected to the information processing terminal 200 via the Internet, and performs data communication according to the TCP / IP protocol.

  The Web management unit 110 includes sub components of an input data analysis unit 111, a screen output unit 112, a Web control unit 113, an authentication code generation unit 114, and an authentication code inquiry unit 115. The input data analysis unit 111 is a part that analyzes data input by the information processing terminal 200 and transmitted via the network 5. Screen output unit 112 is a unit that outputs display data to be transmitted to information processing terminal 200. The Web control unit 113 controls input / output and movement of a Web page displayed on the information processing terminal 200. The authentication code generation unit 114 is a part that generates an authentication code for authenticating a telephone call on the telephone terminal 10 and a logical link of the information processing terminal 200. The authentication code inquiry unit 115 is a part that checks the validity of the authentication code input and transmitted by the information processing terminal 200.

  The database access unit 120 is a part that controls an interface for the Web management unit 110 and the call management unit 120 to access the database 140.

  The call management unit 130 is a part that manages a call with the telephone terminal 10 and controls a call connection. The call management unit 130 communicates with the telephone terminal 10 according to a call connection protocol. The call management unit 130 includes a reception control unit 131, a transmission control unit 132, a call state analysis unit 133, a DTMF signal analysis unit 134, a voice analysis unit 135, a voice synthesis unit 136, a call control unit 137, and a sub-unit of the machine translation processing unit 138. Consists of components. The reception control unit 131 is a part that receives a control signal, a voice signal, or a DTMF signal from the telephone terminal 10 via a telephone line and decodes the signal. The transmission control unit 132 is a part that performs control to send the translated voice back to the telephone terminal 10 as a voice signal.

  The call state analysis unit 133 is a part that analyzes a call state with the telephone terminal 10 (e.g., whether or not a connection is being made). The DTMF signal analyzing unit 134 is a part that analyzes a frequency included in the DTMF signal and performs coding for recognizing which button has been pressed on the telephone terminal 10. The voice analyzing unit 135 is a part that recognizes and codes a voice signal from the telephone terminal 10. The voice synthesizing unit 136 is a part that generates voice for voice output of the translated language. The call control unit 137 is a unit that performs control for distributing processing according to a control signal, a voice signal, or a DTMF signal from the telephone terminal 10. The machine translation processing unit 138 is a unit that performs machine translation on the original language coded by the speech analysis unit 135.

  The database 140 stores an authentication table 300. The details of the authentication table 300 will be described later.

Next, the authentication table will be described with reference to FIG.
The authentication table is a table for associating a call with the telephone terminal 10 with an authentication code, and as shown in FIG. 5, includes fields of a telephone number 300a, a call state 300b, an authentication code 300c, and an issuance count 300d. The telephone number of the telephone terminal 10 is stored as the primary key of the table in the telephone number 300a. The call state 300b stores flags (1: call state, 0: non-call state) indicating the state of the call of the telephone terminal. The authentication code 300c stores the latest authentication code issued by the communication server 100 for linking the call at this telephone number with the information processing terminal 200. The issuance frequency 300d stores the number of times the authentication code has been issued for the telephone number of the telephone number 300a.

Next, an outline operation of the communication system will be described with reference to FIGS.
In the present embodiment, the communication server 100 translates the speech of the Japanese speaker from the telephone terminal 10 and sends it back to the same telephone terminal 10 as the English voice translated for the English speaker. An example of transmitting call content information including translation information will be described. The sequence is almost the same for translation from English to Japanese and other languages.

  First, a user (a Japanese speaker or another operator) from the telephone terminal 10 calls a telephone number of an interpreting service of the communication server 100 to establish a telephone call (A01).

  Next, a Japanese speaker operates a push button of the telephone terminal 10 from the telephone terminal 10 to transmit a DTMF signal for instructing a translation from Japanese to English to the communication server 100 (A02).

Next, a Japanese speaker makes a Japanese call from the telephone terminal 10, and transmits the contents of the call to the communication server 100 (A03).
The communication server 100 translates Japanese into English (S10), and synthesizes the translated English speech (S12).

  Next, the English speaker receives the receiver from the Japanese speaker, and the English speaker operates the push button of the telephone terminal 10 to transmit a DTMF signal for listening to the translated English voice to the communication server 100 (A04). .

Next, the communication server 100 transmits the translated English voice to the telephone terminal 10 (A05).
Next, the user performs a series of authentication processes (S20). Details of this authentication processing will be described later.
When the authentication is successful, the communication server 100 transmits the information to the linked information processing terminal 200 via the network 5.

  The information processing terminal 200 displays a call content display screen 400 as shown in FIG. 7 (S30). In the call content display screen 400, the time of the utterance corresponds to the time column 401, the text of the voice-recognized call corresponds to the Japanese input call column 402, and the translated English text corresponds to the English translation column 403, as shown in FIG. It is displayed with attached.

Next, an authentication process (S20 in FIG. 6) of the communication system according to the first embodiment will be described with reference to FIGS.
First, the user accesses the Web page that provides the service of the communication server from the Web browser displayed on the information processing terminal 200, and the telephone number of the telephone terminal 10 that wants to display the contents of the call (including the translated contents). Is input (A100 in FIG. 8).

Next, the communication server 100 outputs the authentication code issued for the input telephone number to the telephone terminal 10 by voice (A101a).
Next, the user inputs the authentication code received by the telephone terminal 10 from the Web browser displayed on the information processing terminal 200 (A102a).

Next, details of the telephone number input process will be described with reference to FIG.
First, a telephone number input screen (not shown) is displayed on the Web browser of the information processing terminal 200 (S100).

  Then, when a telephone number is input from the telephone number input screen (S101: Yes), the telephone number is transmitted to the communication server 100 via the network 5 (S102).

The communication server 100 registers the transmitted telephone number in the telephone number 300a field of the authentication table 300 (S103).
Next, the call state of the corresponding telephone number is checked (S104), and registered in the field of the call state 300b of the authentication table 300 (S105).

Next, details of the authentication code voice output processing will be described with reference to FIG.
First, when the call state indicated by the call state 300b of the authentication table 300 is a call (S200: Yes), the communication server 100 generates an authentication code by a method such as random number generation (S201), and authenticates the authentication table 300. It is registered in the field of the code 300c (S210).

Next, the generated authentication code is voice-synthesized to generate a synthesized voice signal (S202).
Next, a synthesized voice signal of the authentication code generated for the designated telephone number is output as voice (S203).
Then, the field of the issuance count 300d of the authentication table 300 is incremented (S220).

Next, the details of the authentication code input process will be described with reference to FIG.
First, an authentication code input screen of the Web browser of the information processing terminal 200 is displayed (S300, FIGS. 12A and 12B).

Next, the user inputs an authentication code from the authentication code input screen, and the authentication code is transmitted to the communication server 100 via the network (S301).
The communication server 100 acquires the registered authentication code from the field of the authentication code 300c of the authentication table 300 (S310), and inquires whether the input authentication code matches the input authentication code (S302).

  If they match (S303: Yes), the Web browser is notified of successful authentication (S304). The authentication success notification from the communication server 100 to the user may be simultaneously output to the telephone terminal 10 by voice.

  If they do not match, it is determined whether or not the specified upper limit number of errors has been reached (S305). If the upper limit number of errors has not been reached (S305: No), a screen for reissuing the authentication code is displayed. It is displayed (S307, FIG. 13A), and the process returns to the authentication code voice output process (A101a) shown in FIG. When the upper limit number of errors has been reached (S305: Yes), a screen indicating that the number of errors has exceeded the specified number of times is displayed (S306, FIG. 13B), and a call is urged. The error notification from the communication server 100 to the user may be simultaneously output to the telephone terminal 10 by voice.

Next, details of the authentication processing of the communication system according to the first embodiment will be described with reference to FIG.
First, the user operates the information processing terminal 200 to start up a Web browser and issues a connection request to the communication server 100 via the network 5 (A200). In response to this, the Web management unit 110 of the communication server 100 gives a connection response, displays an input screen (not shown) of the Web browser displayed on the information processing terminal 200, and inputs a telephone number. Request (A201).

  Next, the user inputs the telephone number of the telephone terminal 10 (“xxx-yyyy” in FIG. 14) from the input screen of the Web browser displayed on the information processing terminal 200 (A202).

  Next, the Web management unit 110 of the communication server 100 registers the telephone number transmitted via the network in the authentication table 300 of the database 140 by the database access unit 120 (A203).

  Next, the call management unit 130 acquires the telephone number registered in the authentication table 300 of the database 140 by the database access unit 120 (A204), analyzes the current call state (S800), and Register in the authentication table 300 of the database 140.

  On the other hand, it is assumed that a call originated from the telephone number “xxx-yyyy” registered from the telephone terminal 10 (A205).

  The call management unit 130 of the communication server 100 responds to the incoming call from the telephone terminal 10 (A206), and registers the call state in the authentication table 300 of the database 140 by the database access unit 120 so as to indicate that the call is in progress (A207). ).

  Next, the Web management unit 130 of the communication server 100 acquires the call status in the authentication table 300 of the database 140 (A208), and when the telephone terminal of the telephone number is in a call, the authentication code (“1289 in FIG. 14”). Is generated (S801), the generated authentication code is registered in the authentication table 300 of the database 140 by the database access unit 120, and the number of issued authentication codes is incremented (A209).

  Next, the Web management unit 110 of the communication server 100 checks the number of issued authentication codes in the authentication table 300 of the database 140 by the database access unit 120 (A210), and when the number does not exceed the prescribed upper limit, the call management unit 130. (A211), and when the number does not exceed the prescribed upper limit, the input screen of the Web browser displayed on the information processing terminal 200 is displayed to request the input of the authentication code. (A213, FIG. 12A, FIG. 12B).

  Next, in response to the notification from the Web management unit 110, the call management unit 130 of the communication server 100 acquires the registered authentication code from the authentication table 300 of the database 140 by the database access unit 120 (A212), and extracts it. The obtained authentication code is voice-synthesized (S802), and a voice signal is output as voice to the telephone terminal 10 (A214).

  Then, the user displays the input screen of the Web browser displayed on the information processing terminal 200, and inputs a correct authentication code ("1289") (A215).

  The Web management unit 110 of the communication server 100 obtains the authentication code transmitted from the authentication table 300 of the database 140 by the database access unit 120 from the authentication table 300 of the database 140 (A216), and the authentication code obtained from the authentication table 300. The matching is determined by inquiring (S803), and the authentication result is notified to the information processing terminal 200 (A217). The authentication result may be simultaneously transmitted to the telephone terminal 10 by voice.

  When the authentication is successful, a logical link between the telephone call from the telephone terminal 10 and the information processing terminal 200 is established, and the contents of the telephone call related to the telephone terminal 10 can be displayed on the information processing terminal 200 (A218). ).

According to the present embodiment, the authentication code is notified by voice output to the telephone terminal used by the calling party and the authentication code is input from the Web browser of the information processing terminal 200. Since only the authentication code is known, another person cannot see the contents of the call.
Further, the authentication code is one-time, and the risk that secret leakage due to the plagiarism of a malicious person continues is extremely low.

[Embodiment 2]
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.

  In the first embodiment, authentication for establishing a logical link between the telephone call of the telephone terminal 10 and the information processing terminal 200 when displaying the call content of the telephone terminal 10 on the information processing terminal 200 is performed by the communication server 100. In this case, the authentication code is output as voice and the information is input from the information processing terminal 200.

  In the present embodiment, conversely, authentication for establishing a logical link between the telephone call of the telephone terminal 10 and the information processing terminal 200 is performed by outputting an authentication code from the communication server 100 to the Web browser screen of the information processing terminal 200, This is intended to be performed by inputting the information from a push button of a telephone terminal.

The system configuration and component configuration of the communication system are the same as those shown in FIGS. 1 to 4 of the first embodiment. The configuration of the authentication table 300 is the same.
The same applies to the operation of the communication system shown in FIGS. 6 and 7. This embodiment is different from the first embodiment only in the content of the authentication processing S20.

  Hereinafter, the authentication process (S20 in FIG. 6) of the communication system according to the second embodiment will be described with reference to FIGS.

First, the outline of the authentication processing according to the second embodiment will be described with reference to FIG.
First, the user accesses the Web page that provides the service of the communication server from the Web browser displayed on the information processing terminal 200, and the telephone number of the telephone terminal 10 that wants to display the contents of the call (including the translated contents). Is input (A100 in FIG. 15). This is the same as A100 in FIG. 8 of the first embodiment.

Next, the communication server 100 outputs the authentication code to the display screen of the Web browser of the information processing terminal 200 (A101b).
Next, the user reads the authentication code output on the display screen of the Web browser of the information processing terminal 200, and presses the corresponding push button with the telephone terminal 10 to input (A102b).

Next, the authentication code output process will be described with reference to FIG.
First, when the call state indicated by the call state 300b of the authentication table 300 is a call (S500: Yes), the communication server 100 generates an authentication code by a method such as random number generation (S501), and performs authentication of the authentication table 300. It is registered in the field of the code 300c (S510).

Next, the communication server 100 generates display screen data for displaying the generated authentication code, and transmits the display screen data to the information processing terminal 200 (S502).
Next, the display screen of the Web browser of the information processing terminal 200 outputs the authentication code (S503, FIG. 18). Then, the field of the issuance count 300d of the authentication table 300 is incremented (S520).

Next, the details of the authentication code input process will be described with reference to FIG.
First, a voice guidance requesting an input is output from the telephone terminal 10 (S600). This is guidance such as "Please enter an authentication code from a telephone button".

Next, the user presses the push button of the telephone terminal 10 to input the authentication code output on the display screen of the information processing terminal 200, and the authentication code is transmitted to the communication server 100 via the network. (S601).
The communication server 100 receives the transmitted DTMF signal and codes the DTMF signal (S602).

  Next, the communication server 100 acquires the registered authentication code from the field of the authentication code 300c of the authentication table 300 (S610), and inquires whether the code matches the code of the DTMF signal (S603).

  If they match (S604: Yes), a notification of successful authentication is sent by telephone voice to the telephone terminal 10 (S605). Note that the notification of the authentication success may be output to the Web browser of the information processing terminal 200 at the same time. If they do not match, it is determined whether the specified upper limit number of errors has been reached (S606). If the upper limit number of errors has not been reached (S606: No), a screen for reissuing the authentication code is displayed. It is displayed (S608, FIG. 19), and the process returns to the authentication code output process (A102b) shown in FIG.

  If the upper limit number of errors has been reached (S606: Yes), voice guidance indicating that the number of errors has exceeded the specified number is output to the telephone terminal 10 (S607), and a call is re-prompted. This guidance is, for example, "The error has exceeded a predetermined number. Please end the call and try again." The notification of the error may be output to the Web browser of the information processing terminal 200 at the same time.

Next, details of the authentication processing of the communication system according to the second embodiment will be described with reference to FIG.
First, the user operates the information processing terminal 200 to start a Web browser and issues a connection request to the communication server 100 via the network 5 (A300). In response to this, the Web management unit 110 of the communication server 100 gives a connection response, displays an input screen (not shown) of the Web browser displayed on the information processing terminal 200, and inputs a telephone number. Request (A301).

Next, the user inputs the telephone number of the telephone terminal 10 (“xxx-yyyy” in FIG. 20) from the input screen of the Web browser displayed on the information processing terminal 200 (A302).
Next, the Web management unit 110 of the communication server 100 registers the telephone number transmitted via the network in the authentication table 300 of the database 140 by the database access unit 120 (A303).

  Next, the call management unit 130 acquires the telephone number registered in the authentication table 300 of the database 140 by the database access unit 120 (A304), analyzes the current call state, and Register in the authentication table 300.

On the other hand, it is assumed that a call is made from the telephone number “xxx-yyyy” registered from the telephone terminal 10 (A305).
The call management unit 130 of the communication server 100 responds to the incoming call from the telephone terminal 10 (A306), and registers the communication state 300b of the authentication table 300 of the database 140 by the database access unit 120 so that the call is in progress (A306). A307).

  Next, the Web management unit 130 of the communication server 100 acquires the call status of the authentication table 300 of the database 140, and when the telephone terminal of the telephone number is in a call, transmits the authentication code (“1289” in FIG. 20). The authentication code is generated (S801), and the generated authentication code is registered in the authentication table 300 of the database 140 by the database access unit 120, and the number of issued authentication codes is incremented (A309).

  Next, the Web management unit 110 of the communication server 100 checks the number of times the authentication code has been issued in the authentication table 300 of the database 140 (A310), and if the number does not exceed the prescribed upper limit number, displays the Web browser of the information processing terminal 200. The authentication code ("1289") is output to the screen (A311), and the call management unit 130 is notified that the authentication code has been issued (A312).

Upon receiving the notification, the call management unit 130 of the communication server 100 outputs voice guidance to the telephone terminal 10 requesting the input of an authentication code (A313).
The user inputs the authentication code read from the display screen of the information processing terminal 200 from the telephone terminal 10 according to the voice guidance (A314), and the corresponding DTMF signal is sent to the communication server 100.

  The call management unit 130 of the communication server 100 receives the DTMF signal, analyzes the code (S804), and notifies the decoded authentication code (“1289”) to the Web management unit 130 of the communication server 100 (A315).

  The Web management unit 110 of the communication server 100 acquires the authentication code from the authentication table 300 of the database 140 by the database access unit 120 (A316), and queries the authentication code notified from the call management unit 130 and the authentication code acquired from the authentication table 300. Then, the matching is determined (S803), and the authentication result is notified by voice to the telephone terminal 10 via the call management unit 130 (A317, A318). Note that the authentication result may be simultaneously transmitted by the Web browser of the information processing terminal 200.

  When the authentication is successful, a logical link between the telephone call of the telephone terminal 10 and the information processing terminal 200 has been established, and the contents of the telephone call related to the telephone terminal 10 can be displayed on the information processing terminal 200 (A319). ).

  As described above, according to the authentication method of each embodiment of the present invention, there is an advantage that the user does not need to register an e-mail address in advance in order to transmit or input the authentication code using the voice session to the user. is there.

  In addition, since the one-time authentication code is used, the authentication code is not known unless eavesdropping is performed in real time, so that there is a feature that the risk of leaking all the call contents is reduced.

5 Network 10 Phone terminal 100 Communication server 200 Information processing terminal

Claims (3)

A communication system in which a telephone terminal, an information processing terminal, and a communication server are connected by a network,
The communication server,
Means for registering the telephone number of the telephone terminal;
Means for generating an authentication code corresponding to the telephone number;
Means for generating a synthesized voice of the generated authentication code and outputting the synthesized voice to the telephone terminal;
Means for receiving an authentication code from the information processing terminal,
Holding an authentication table storing the correspondence between the telephone number and the generated authentication code,
The communication server,
Authentication code corresponding to the telephone number of the telephone terminal, verifying the matching of the authentication code received from the information processing terminal,
When the authentication code corresponding to the telephone number of the telephone terminal held in the authentication table matches the authentication code received from the information processing terminal, information related to a call content is transmitted to the information processing terminal. Communication system characterized by that. The communication server,
Further, a means for translating the call content of the telephone terminal into a language and converting it into text,
2. The communication system according to claim 1, wherein the information on the contents of the call includes a text of the original call and a text translated from the call. An authentication method for a communication system in which a telephone terminal, an information processing terminal, and a communication server are connected by a network,
The communication server registers the telephone number of the telephone terminal in an authentication table;
The communication server generates an authentication code corresponding to the telephone number, and stores the authentication code corresponding to the telephone number in the authentication table;
Generating a synthesized voice of the generated authentication code and outputting the synthesized voice to the telephone terminal;
Wherein the communication server receives an authentication code from the information processing terminal;
The communication server has an authentication code corresponding to the telephone number of the telephone terminal, and a step of verifying a match between the authentication code received from the information processing terminal,
The communication server verifies that the authentication code corresponding to the telephone number of the telephone terminal held in the authentication table and the authentication code received from the information processing terminal match each other. An authentication method for authenticating the relevance of an information processing terminal.

Images