Abstract: The present disclosure provides a voice authentication system. The voice authentication system according to an embodiment of the present disclosure includes a voice collection unit configured to collect voice information obtained by digitizing a speaker's voice, a learning model server configured to generate a voice image based on the collected voice information of the speaker, causes a deep neural network (DNN) model to learn the voice image, and extract a feature vector for the voice image, a watermark server configured to generate a watermark based on the feature vector and embed the watermark and individual information into the voice image or voice conversion data, and an authentication server configured to generate a private key based on the feature vector and determine whether to extract the watermark and the individual information based on an authentication result.

Abstract: The present invention relates to an automatic speech recognizer and a speech recognition method using a keyboard macro function, the method being characterized by including the steps in which: a transcription data generation unit generates transcription data on the basis of speech data input through a microphone; a labeling unit, in order to perform a macro function on the generated transcription data, labels and sessionizes the generated transcription data and stores the labeled and sessionized data when a preset labeling target word is included; and the generated transcription data is displayed in a space in a utility program in which data can be input by a virtual keyboard.

Abstract: According to an aspect of the present disclosure, a method for generating a record of a telemedicine service in a video call between at least two terminal devices is disclosed. The method includes obtaining authentication information of a user authorized to use the telemedicine service, receiving a sound stream of the video call from a terminal device of the at least two terminal devices, detecting a voice signal from the sound stream, verifying whether the voice signal is indicative of the user based on the authentication information, upon verifying that the voice signal is indicative of the user, continuing the video call to generate the record of the telemedicine service, and upon verifying that the voice signal is not indicative of the user, interrupting the video call.

Abstract: A SLA 3D printer according to the present disclosure includes: a plurality of molding plates; at least one molding plate mover configured to control movement of the plurality of molding plates; at least one resin container in which the plurality of molding plates and photocurable liquid resin are accommodated; a light source configured to cure the liquid resin; and an optical path changer configured to change an optical path, wherein, when one of the plurality of molding plates is being moved by the at least one molding plate mover, the optical path changer changes the optical path so that another molding plate that is not being moved is irradiated with light from the light source.