Shutter glasses and method of obtaining shutter control signal of shutter glasses

A method of obtaining a shutter control signal of a pair of shutter glasses including a shutter glasses unit having a left eye shutter and a right eye shutter, a wireless communication unit performing a wireless communication with an image display device carrying out a time-sharing display of a left eye image and a right eye image in a predetermined period, and a shutter driving unit opening and closing the left eye shutter and the right eye shutter of the shutter glasses unit based on the shutter control signal obtained from the image display device by the wireless communication unit, the method comprising the steps of:

• holding a combination of glasses state information and network address information of an image display device in a storage unit;
• obtaining state information by detecting one or both of the position and the direction of the shutter glasses unit as a glasses state;
• and
• when the storage unit has a combination containing glasses state information corresponding to the glasses state information which is obtained in the step of obtaining state information, performing the wireless communication with a predetermined image display device using the network address information contained in the combination, and to obtain the shutter control signal from the predetermined image display device accordingly.