BACKGROUND

1. Field

Apparatuses and methods consistent with exemplary embodiments relate to a display apparatus and a control method thereof, and more particularly, to a display apparatus which performs a video call with another display apparatus and a control method thereof.

2. Description of the Related Art

Due to development of electronic technology, various types of electronic devices are widely used in various fields. Particularly, a display device that may share contents with another display device on a real time basis and perform a video call at the same time has been developed.

However, due to restriction in a display area, when a video call user interface (UI) is displayed to be large, it may prevent a user's watching contents. On the other hand, if a video call UI is displayed to be small, meaning of video call is discolored.

Accordingly, there is a use for detecting utilization of video call function and changing a video call UI flexibly while not hindering watching of contents.

SUMMARY

One or more exemplary embodiments provide an apparatus which change a size of a video call UI according to a behavior of a counterpart of a video call and a control method thereof.

According to an aspect of an exemplary embodiment, there is provided a display apparatus including a communication interface configured to communicate with another display apparatus; a display configured to display contents that are shared with the other display apparatus, together with a video call user interface (UI) for a video call with a user of the other display apparatus; and a processor configured to, in response to determining that at least one from among a gesture of the user and a voice of the user included in video call data received from the other display apparatus satisfies a predetermined condition, control the display to change a size of the video call UI displayed on the display.

The processor may be further configured to, in response to the at least one from among the gesture and the voice of the user included in the video call data received from the other display apparatus being recognized for longer than a predetermined time, gradually enlarge the size of the video call UI displayed on the display.

The processor may be further configured to, in response to a level of the voice of the user included in the video call data received from the other display apparatus being greater than a predetermined amount, enlarge the size of the video call UI to a predetermined size displayed on the display.

The processor may be further configured to, in response to the level of the voice of the user being greater than a volume of the contents, enlarge the video call UI displayed on the display to the predetermined size.

The processor may be further configured to, in response to the voice of the user not being recognized for a predetermined time while the video call UI displayed on the display is enlarged to the predetermined size, return the video call UI displayed on the display to a size prior to being enlarged.

The processor may be further configured to, in response to the at least one from among the gesture and the voice of the user being recognized from voice call data received from the other display apparatus, control the display to provide a predetermined visual feedback at an edge of the video call UI displayed on the display, and in response to the at least one from among the recognized gesture and the recognized voice of the user satisfying a predetermined condition, change the size of the video call UI displayed on the display.

The processor may be further configured to, in response to the gesture and the voice of the user of the other display apparatus not being recognized from video call data received from the other display apparatus, replace the video call data displayed in the video call UI with a predetermined image.

The processor may be further configured to, in response to the at least one from among the gesture and the voice of the user included in video call data received from the other display apparatus not being recognized for longer than a predetermined time, gradually reduce the size of the video call UI displayed on the display.

The processor may be further configured to receive privacy level information of the user of the other display apparatus from the other display apparatus, and change the size of the video call UI displayed on the display based on the received privacy level information.

The processor may be further configured to: in response to at least one from among the gesture and the voice of the user satisfying a predetermined condition, determine a privacy level of the user of the other display apparatus from the privacy level information; and if the privacy level of the user is less than a predetermined level, change the size of the video call UI displayed on the display, and if the privacy level is greater than or equal to the predetermined level, maintain the size of the video call UI displayed on the display.

According to an aspect of another exemplary embodiment, there is provided a control method of a display apparatus, the control method including: displaying contents that are shared with another display apparatus, together with a video call user interface (UI) for a video call with a user of the other display apparatus; and in response to determining that at least one from among a gesture and a voice of the user included in video call data received from the other display apparatus satisfies a predetermined condition, changing a size of the video call UI displayed on a display.

The changing the size of the video call UI displayed on the display may include, in response to the at least one from among the gesture and the voice of the user included in the video call data received from the other display apparatus being recognized for longer than a predetermined time, gradually enlarging the size of the video call UI displayed on the display.

The changing the size of the video call UI displayed on the display may include, in response to a level of the voice of the user included in the video call data received from the other display apparatus being greater than a predetermined size, enlarging the size of the video call UI displayed on the display to a predetermined size.

The changing the size of the video call UI displayed on the display may include, in response to the level of the user voice being greater than a volume of the contents, enlarging the video call UI displayed on the display to the predetermined size.

The changing the size of the video call UI on the display may include, in response to the voice of the user not being recognized for a predetermined time while the video call UI is enlarged to the predetermined size, returning the video call UI displayed on the display to a size prior to being enlarged.

The changing the size of the video call UI displayed on the display may include, in response to the at least one from among the gesture and the voice of the user being recognized from video call data received from the other display apparatus, providing a predetermined visual feedback at an edge of the video call UI, and in response to the at least one from among the recognized gesture and the recognized voice of the user satisfying a predetermined condition, changing a size of the video call UI displayed on the display.

The changing the size of the video call UI displayed on the display may include, in response to the gesture and the voice of the user not being recognized from video call data received from the other display apparatus, replacing the video call data displayed in the video call UI with a predetermined image.

The changing the size of the video call UI displayed on the display may include, in response to the at least one from among the gesture and the voice of the user included in video call data received from the other display apparatus not being recognized for longer than a predetermined time, gradually reducing the size of the video call UI displayed on the display.

The changing the size of the video call UI on the display may include receiving, from the other display apparatus, privacy level information of the user of the other display apparatus, changing the size of the video call UI displayed on the display based on the received privacy level information.

The changing the size of the video call UI on the display may include, in response to at least one from among the gesture and the voice of the user satisfying a predetermined condition, when privacy level of the user is less than a predetermined level, changing the size of the displayed video call UI, and when privacy level is greater than or equal to the predetermined level, maintaining the size of the video call UI displayed on the display.

According to an aspect of another exemplary embodiment, there is provided an apparatus including: a communication interface configured to communicate with another apparatus; a processor configured to: control a display to display contents that are shared with the other apparatus, together with a video call user interface (UI) for a video call with a user of the other apparatus; and in response to determining that at least one from among a gesture of the user and a voice of the user of the other apparatus satisfies a predetermined condition, control the display to change a size of the displayed video call UI.

The processor may be further configured to, in response to the at least one from among the gesture and the voice of the user of the other apparatus being recognized for longer than a predetermined time, gradually enlarge the size of the displayed video call UI.

The processor may be further configured to, in response to a volume level of the voice of the user of the other apparatus being greater than a predetermined amount, enlarge the size of the displayed video call UI to a predetermined size.

The processor may be further configured to, in response to the at least one from among the gesture and the voice of the user being recognized from voice call data received from the other apparatus, control the display to provide a predetermined visual feedback at an edge of the displayed video call UI, and in response to the at least one from among the recognized gesture and the recognized voice of the user satisfying a predetermined condition, change the size of the displayed video call UI.

The processor may be further configured to receive privacy level information of the user of the other apparatus, and change the size of displayed the video call UI based on the received privacy level information.

According to one or more exemplary embodiments, a display device may change a size of a video call UI according to a behavior a user at the other end of a video call and attract attentions of a user of a video call.

