JPS6032099A - Voice data collimation system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to an audio data matching method for matching the audio data of a registrant of audio data and a verifier in order to determine whether they are the same person.

<Prior art and its problems> Generally, in order to authenticate an individual, when registering, a PIN code to identify the individual is recorded on a magnetic card, and at the time of verification, the magnetic card is inserted into a magnetic card league. There are methods that authenticate individuals. This method is inconvenient if the magnetic card is stolen and used by another person. In order to solve this problem, conventionally, as shown in FIG. 1, registrant A inputs his or her own voice into the voice data input section 1 at the time of registration, and ``this voice data is registered by the speaker verification device 2.'' During verification, verification person A, who is also a registrant, inputs into the voice data input section 1,
There is a device in which a speaker verification device 2 verifies whether or not this voice data matches registered voice data. Therefore, in this verification method, since the voice of a person other than the registrant A is different from that of the registrant A, it is difficult for the other person to commit fraud. However, the voice data input section 1 and the speaker verification device 2 are installed in different locations,
Therefore, both 1 and 2 may be connected by a transmission line 3. In such a case, as also shown in FIG. 1, unauthorized user B uses his own eavesdropping terminal 4 to record the voice data of registrant A transmitted to the transmission line 3, and
After that, when this recorded voice data is input to the voice data input unit 1, the speaker verification device 2 verifies that the verifier is registrant A even though it is unauthorized user B. There is a strong possibility that this will occur.

<Purpose of the Invention> The purpose of the present invention is to prevent verification that such unauthorized users are registrants.

do.

<Structure and Effects of the Invention> In order to achieve the above-mentioned object, the present invention provides current time data at the time of registration and current time at the time of verification for both voice data registration and verification. A communication control circuit that sends the transmission data with added data to the transmission line, registers the audio data included in the transmitted transmission data when registering audio data, and compares the registered audio data with the audio data when verifying the audio data. In addition to checking the transmitted audio data, if the transmitted data includes current time data at the time of registration in addition to the current time data at the time of verification, the registrant at the time of registration and the verification at the time of verification are performed. and a speaker verification device that performs verification to determine if there is a mismatch between the speaker and the speaker. Therefore, according to the present invention, at the time of voice data registration, transmission data including voice data and current time data at the time of registration is transmitted over the transmission line.

Therefore, when an unauthorized user records this transmission data with his/her own recording terminal, not only the audio data but also the current time data at the time of registration are recorded at the same time. Therefore, if the purpose of unauthorized use of the recorded transmission data is ≠, and the unauthorized user inputs it into the audio data input section and causes it to be transmitted over the transmission line, this transmission data includes not only the current time data at the time of verification. This includes the information at the time of registration. For this reason, the speaker verification device can prevent unauthorized use by comparing the registrant at the time of registration and the verifier's power at the time of verification (if there is a discrepancy). Even if the person directly inputs voice input and therefore the current time data at the time of registration is not included in the transmitted data, the voice data differs from that of the registrant, so it is necessary to verify that the registrant is someone else. There isn't.

<Description of Examples> Examples of the present invention will be described in detail below with reference to FIGS. 2 to 5.

FIG. 2 is a block circuit diagram of the audio data matching method according to this embodiment. In FIG. 2, reference numeral 11 denotes an audio data input section into which the registrant's voice is input during registration and the verifier's voice during verification, and is comprised of, for example, a microphone. 12 is a clock circuit that outputs current time data at the time of registration and current time data at the time of verification. 13- adds the current time data at the time of registration and the current time data at the time of verification from the clock circuit 12 to the audio data from the audio data input section 11, both when registering and verifying the audio data. This is a communication control circuit that sends out transmission data to the transmission line 14.

Therefore, as shown in the flowchart in Figure 3,
At the time of registration, the registrant who is the authorized user A inputs voice data into the voice data input section 11 (step T1). The communication control circuit 13 transmits transmission data obtained by adding the current time data at the time of registration indicated by the clock circuit 12 to this audio data (step T2).

This transmission data is recorded by the speaker verification device 161, which will be described later, and thereby the voice data of authorized user A is registered (step T8). During this registration, unauthorized user B
If the person records using his/her own recording terminal 15, the recorded contents include not only the voice data of the registrant A but also the current time data at the time of registration. When registering voice data, the amplifier T4) o-16 registers the transmission data transmitted via the transmission line 14, and when collating voice data, collates the registered voice data with the voice data transmitted for verification. This speaker verification device also performs verification to determine that the registrant and verification person do not match if the transmission data includes current time data at the time of registration. This speaker verification device 1
6 is adapted to receive current time data at the time of verification from a clock circuit 17 for this verification. in this case,
Current time data at the time of verification indicated by one clock circuit 12,
Although there is some deviation from that indicated by the other clock circuit 17 due to delays caused by the transmission line 14, the speaker verification device 16 performs the verification process taking this deviation into account.

Of course.

Since the difference between the current time data at the time of registration and the current time data at the time of verification is actually sufficiently larger than the former difference, there is no problem in the verification process.

Therefore, when the verifier is registrant A, the transmitted data includes only the verifier's voice data and the current time data at the time of verification, as shown in the flowchart of FIG. , S2). As a result, the speaker verification device 16 compares the voice data and current time data from the evening of the transmission data with the registered voice data and the current time data of the clock circuit 17 (step S8), and determines the registrant and verifier. It is determined that they match (step S4). In addition, when the verifier is not registrant A but unauthorized user B, the transmitted data includes the stolen voice data of registrant A and the current time data at the time of registration, as shown in the flowchart in Figure 5. and the current time data at the time of verification (step 51'). Therefore, the speaker verification device 16
Now, as a result of the verification that the current time data at the time of registration and the current time data of the clock circuit 17 do not match (step 5),
2'), it is determined that the verifier is unauthorized user B (step 58').

In this way, according to this embodiment, there is no possibility that an unauthorized user will be verified as a registrant.

[Brief explanation of drawings]

1 is a block circuit diagram of a conventional method, FIGS. 2 to 5 are an embodiment of the present invention, FIG. 2 is a block circuit diagram of a method according to this embodiment, and FIG. 3 is a block circuit diagram of a conventional method. FIG. 4 is an explanatory flowchart for registration, FIG. 4 is an explanatory flowchart for valid user verification, and FIG. 5 is an explanatory flowchart for unauthorized user verification. 11... Audio data input section, 12, 17... Clock circuit, 13... Communication control circuit, 14... Transmission line,
15...Terminal for wiretapping, 16...Speaker verification device Applicant: Tateishi Electric Co., Ltd. Agent, Kazuhide Okada, patent attorney

Claims (1)

[Claims] (1) A communication control circuit that sends transmission data, which is obtained by adding current time data at the time of registration and current time data at the time of verification, to the voice data to the transmission line both at the time of voice data registration and at the time of verification. When registering voice data, the voice data included in the transmitted data is registered, and when collating voice data, the registered voice data is collated with the transmitted voice data, and the transmitted data is compared. If the current time data at the time of registration is included in addition to the current time data at the time, the registrant at the time of registration and the person at the time of verification do not match. Data matching method.