Shutter glasses, display apparatus and control method thereof

A control method of shutter glasses comprising:

• receiving a sync signal from a display apparatus which displays a three-dimensional (3D) video, the sync signal comprising a plurality of pulses corresponding to display timing of the 3D video;
• determining whether the sync signal received from the display apparatus is normal;
• generating a driving signal for driving a lens configured to selectively transmit light on the basis of the received sync signal and storing information relating to the received sync signal in response to the received sync signal being determined normal;
• and
• generating the driving signal on the basis of the information in response to the received sync signal being determined abnormal.

Shutter glasses comprising:

• a lens configured to selectively transmit light;
• a communicator configured to receive a sync signal from a display apparatus which displays a three-dimensional (3D) video, the sync signal comprising a plurality of pulses corresponding to display timing of the 3D video;
• a storage configured to store a reference value of an interval between the pulses;
• and
• a controller, in response to the sync signal being received via the communicator, configured to adjust an interval between the pulses of the received sync signal corresponding to the reference value stored in the storage and to generate a driving signal for driving the lens on the basis of the adjusted sync signal.