Display apparatus and control method thereof

Abstract

A display apparatus is provided. The display apparatus includes: a communication interface including a circuit; a display panel configured to be selectively driven at any one of a plurality of frame rates; and a processor configured to: identify an input frame rate of a video, based on the video being received through the communication interface, adjust a setting value of the display panel so that the display panel operates at a frame rate among the plurality of frame rates that corresponds to the input frame rate, and control the display panel to output the received video, by driving the display panel at the frame rate corresponding to the input frame rate.

What is claimed is: 
     
         1 . A display apparatus comprising:
 a communication interface comprising a circuit and configured to receive a video;   a display panel operable at a first refresh rate or a second refresh rate, the second refresh rate having a frequency higher than a frequency of the first refresh rate; and   at least one processor configured to:   control the display apparatus to operate a first mode or a second mode,   control the display panel to output the video by maintaining an input frame rate of the video in the first mode of the display apparatus, and   control the display panel to output the video by adjusting the input frame rate of the video to a second frame rate among a first frame rate and the second frame rate in the second mode of the display apparatus, the second frame rate corresponds to the second refresh rate.   
     
     
         2 . The display apparatus as claimed in  claim 1 , wherein the at least one processor configured to:
 based on the input frame rate of the video corresponding to the first frame rate, control the display panel to operate at the first refresh rate to output the video to the first frame rate, in the first mode of the display apparatus, and   based on the input frame rate of the video corresponding to the second frame rate, control the display panel to operate at the second refresh rate to output the video to the second frame rate, in the first mode of the display apparatus.   
     
     
         3 . The display apparatus as claimed in  claim 1 , wherein the first frame rate corresponds to the first refresh rate, and
 wherein the first mode is for minimizing a delay that occurs between an input and an output of the video.   
     
     
         4 . The display apparatus as claimed in  claim 1 , wherein the at least one processor configured to:
 based on the input frame rate of the video corresponding to the first frame rate, change the input frame rate of the video from the first frame rate to the second frame rate and control the display panel to operate at the second refresh rate to output the video to the second frame rate, in the second mode of the display apparatus, and   based on the input frame rate of the video corresponding to the second frame rate, maintain the input frame rate of the video and control the display panel to operate at the second refresh rate to output the video to the second frame rate, in the second mode of the display apparatus.   
     
     
         5 . The display apparatus as claimed in  claim 1 , wherein the at least one processor is further configured to adjust a dynamic capacitance compensation (DCC) value of the display panel based on whether the display panel operates at the first frame rate or the second frame rate, and
 wherein a first DCC value corresponding to the first frame rate of the display panel is greater than a second DCC value corresponding to the second frame rate of the display panel.   
     
     
         6 . The display apparatus as claimed in  claim 5 , wherein the at least one processor adjusts a liquid crystal charging timing of the display panel based on whether the display panel operates at the first frame rate or the second frame rate, and
 wherein a first liquid crystal charging timing corresponding to the first frame rate of the display panel is greater than a second liquid crystal charging timing corresponding to the second frame rate of the display panel.   
     
     
         7 . The display apparatus as claimed in  claim 5 , wherein the at least one processor is further configured to:
 based on a mode of the display apparatus being changed from the first mode to the second mode, increase the DCC value and a liquid crystal charging timing based on a setting value corresponding to the first frame rate, and   adjust a luminance of the display panel so that a gamma value of the display panel is maintained to be equal to a reference gamma value.   
     
     
         8 . The display apparatus as claimed in  claim 1 , wherein the at least one processor is further configured to:
 control the display panel to display a user interface (UI) for changing a refresh rate of the display panel, and   adjust a setting value of the display panel so that the display panel operates at the refresh rate corresponding to an user command for changing the refresh rate of the display panel input through the UI.   
     
     
         9 . The display apparatus as claimed in  claim 1 , wherein the at least one processor is further configured to identify the input frame rate of the video based on metadata of the video. 
     
     
         10 . A control method of a display apparatus comprising a display panel operable at a first refresh rate or a second refresh rate, the control method comprising:
 receiving a video;   controlling the display apparatus to operate a first mode or a second mode;   controlling the display panel to output the video by maintaining an input frame rate of the video in the first mode of the display apparatus; and   controlling the display panel to output the video by adjusting the input frame rate of the video to a second frame rate among a first frame rate and the second frame rate in the second mode of the display apparatus, the second frame rate corresponds to the second refresh rate.   
     
     
         11 . The control method as claimed in  claim 10 , wherein the controlling the display panel in the first mode of the display apparatus further comprising:
 based on the input frame rate of the video corresponding to the first frame rate, controlling the display panel to operate at the first refresh rate to output the video to the first frame rate, in the first mode of the display apparatus, and   based on the input frame rate of the video corresponding to the second frame rate, controlling the display panel to operate at the second refresh rate to output the video to the second frame rate, in the first mode of the display apparatus.   
     
     
         12 . The control method as claimed in  claim 10 , wherein the first frame rate corresponds to the first refresh rate, and
 wherein the first mode is for minimizing a delay that occurs between an input and an output of the video.   
     
     
         13 . The control method as claimed in  claim 10 , wherein the controlling the display panel in the second mode of the display apparatus further comprising:
 based on the input frame rate of the video corresponding to the first frame rate, changing the input frame rate of the video from the first frame rate to the second frame rate and controlling the display panel to operate at the second refresh rate to output the video to the second frame rate, in the second mode of the display apparatus, and   based on the input frame rate of the video corresponding to the second frame rate, maintaining the input frame rate of the video and controlling the display panel to operate at the second refresh rate to output the video to the second frame rate, in the second mode of the display apparatus.   
     
     
         14 . The control method as claimed in  claim 10 , wherein the control method further comprises adjusting a dynamic capacitance compensation (DCC) value of the display panel, based on whether the display operates at the first frame rate or the second frame rate, and
 wherein a first DCC value corresponding to the first frame rate of the display panel are greater than a second DCC value corresponding to the second frame rate of the display panel.   
     
     
         15 . The control method as claimed in  claim 14 , further comprising:
 adjusting a liquid crystal charging timing of the display panel based on whether the display panel operates at the first frame rate or the second frame rate, and   wherein a first liquid crystal charging timing corresponding to the first frame rate is greater than a second liquid crystal charging timing corresponding to the second frame rate of the display panel.   
     
     
         16 . The control method as claimed in  claim 14 , further comprising:
 based on a mode of the display apparatus being changed from the first mode to the second mode, increasing the DCC value and a liquid crystal charging timing based on a setting value corresponding to the first frame rate; and   adjusting a luminance of the display panel so that a gamma value of the display panel is maintained to be equal to a reference gamma value.   
     
     
         17 . The control method as claimed in  claim 10 , further comprising:
 displaying a user interface (UI) for changing a refresh rate of the display panel, and   adjusting a setting value of the display panel so that the display panel operates at a refresh rate corresponding to an user command for changing the refresh rate of the display panel input through the UI.   
     
     
         18 . The control method as claimed in  claim 10 , further comprising identifying the input frame rate of the video based on metadata of the received video.