Patent ID: 8836773
Filing Date: 2014-09-16
Classification: H04N

Abstract:
1. A method for playing a corresponding 3D image according to different visual angles, the method comprising: utilizing a first infrared detecting device disposed at a vertical center axis of the display device to detect a first distance between the first infrared detecting device and the shutter glasses; utilizing a second infrared detecting device disposed on the display device and disposed at the same horizontal axis with the first infrared detecting device to detect a second distance between the second infrared detecting device and the shutter glasses; calculating a first offset angle of a visual angle according to the first distance, the second distance, a distance between the first infrared detecting device and the second infrared detecting device, and the cosine law without coordinate calculation, the first offset angle being an angle between the shutter glasses not located at a horizontal surface where the first and second infrared detecting devices are located and a horizontal axis relative to the first infrared detecting device; setting the first offset angle as an offset angle between a vertical projection position of the shutter glasses on the horizontal surface and the horizontal axis relative to the first infrared detecting device; setting an complementary angle of the offset angle as a horizontal offset angle of the shutter glasses relative to a vertical center surface of the display device; performing horizontal positioning of the shutter glasses relative to the display device according to the horizontal offset angle; playing, by the display device, a plurality of 3D image sets with different visual angles at a specific frequency; transmitting, by the detecting module, a synchronization signal corresponding to the horizontal offset angle to the shutter glasses; and controlling a switching frequency of the shutter glasses according to the synchronization signal so as to make the shutter glasses capable of receiving one of the plurality of 3D image sets corresponding to the horizontal offset angle.