3D TV

3D television (3D TV, or 3D) is television that conveys depth perception to the viewer by employing variety of technologies used to create realistic three-dimensional or stereoscopic images on a display.

3D displays can be either...
• Active - requiring viewers to wear special glasses that are electronically synchronized to the display;
• Passive - requiring viewers to wear special glasses that use polarizing technology and do not require electronics, or
• Glasses-free (auto-stereoscopic) displays that do not require glasses.

HDMI uses several different methods to encode the 3D images into the video signals:
• Top-and-bottom
• Side-by-side, and
• Frame-packing

3D signals generally require higher bandwidth than 2D signals.