Abstract: A connection service providing method includes outputting, by a first user terminal from among a plurality of user terminals, a connection request signal to at least one second user terminal among the plurality of user terminals through an inaudible frequency range based on a trigger signal for initiating a connection between the plurality of user terminals; and connecting the at least one second user terminal and the first user terminal as a group; and providing a connection service associated with the group on the first user terminal.

Abstract: A connection service providing method includes outputting, by a first user terminal from among a plurality of user terminals, a connection request signal to at least one second user terminal among the plurality of user terminals through an inaudible frequency range based on a trigger signal for initiating a connection between the plurality of user terminals; and connecting the at least one second user terminal and the first user terminal as a group; and providing a connection service associated with the group on the first user terminal.

Abstract: A connection service providing method includes outputting, by a first user terminal from among a plurality of user terminals, a connection request signal to at least one second user terminal among the plurality of user terminals through an inaudible frequency range based on a trigger signal for initiating a connection between the plurality of user terminals; and connecting the at least one second user terminal and the first user terminal as a group; and providing a connection service associated with the group on the first user terminal.

Abstract: Disclosed is a computer-implemented navigation method including transmitting, to a counterpart terminal, current location-based video data that is input to a video call screen of a terminal during a video call; receiving instruction information for a navigation based on the video data from the counterpart terminal that displays the video data on a video call screen of the counterpart terminal; generating navigation information by mapping the instruction information to the video data of the terminal; and providing the navigation information based on location information of the terminal.

Abstract: Provided are a method, a system, and a non-transitory computer readable record medium for enhancing a video quality of a video call. A video call method may enhance and thereby forward a picture quality of a main object or a main portion in a video and thereby enhance a picture quality of experience of a recipient of a video call.

Abstract: Provided is a method and system for automatically connecting a call of a Voice over Internet Protocol (VoIP) service. A method of automatically connecting the VoIP call in an electronic device implemented by a computer may include a setting a specific counterpart among counterparts capable of making the VoIP call over a network as an automatic connection target; and automatically connecting a call with the specific counterpart immediately in response to executing a program including a function of providing the VoIP call without performing a calling operation and an acceptance operation for a call between a user of the electronic device and the specific counterpart.

Abstract: Provided are a method, a system, and a non-transitory computer readable record medium for enhancing a video quality of a video call. A video call method may enhance and thereby forward a picture quality of a main object or a main portion in a video and thereby enhance a picture quality of experience of a recipient of a video call.

Abstract: A connection service providing method includes outputting, by a first user terminal from among a plurality of user terminals, a connection request signal to at least one second user terminal among the plurality of user terminals through an inaudible frequency range based on a trigger signal for initiating a connection between the plurality of user terminals; and connecting the at least one second user terminal and the first user terminal as a group; and providing a connection service associated with the group on the first user terminal.

Abstract: Disclosed are a method and a system for recognizing an emotion during a call and utilizing the recognized emotion. An emotion-based call content providing method includes recognizing an emotion from call details during a call between a user and a counterpart, and storing at least a portion of the call details and providing the same as content related to the call based on the recognized emotion.

Abstract: Provided is a method and system for automatically connecting a call of a Voice over Internet Protocol (VoIP) service. A method of automatically connecting the VoIP call in an electronic device implemented by a computer may include a setting a specific counterpart among counterparts capable of making the VoIP call over a network as an automatic connection target; and automatically connecting a call with the specific counterpart immediately in response to executing a program including a function of providing the VoIP call without performing a calling operation and an acceptance operation for a call between a user of the electronic device and the specific counterpart.

Abstract: Disclosed is a computer-implemented navigation method including transmitting, to a counterpart terminal, current location-based video data that is input to a video call screen of a terminal during a video call; receiving instruction information for a navigation based on the video data from the counterpart terminal that displays the video data on a video call screen of the counterpart terminal; generating navigation information by mapping the instruction information to the video data of the terminal; and providing the navigation information based on location information of the terminal.