What is 3D HDTV?
high -resolution video combination and three -dimensional (3D) images, 3D high -resolution 3D TVs (HDTV) are a new technology for watching movies and other video content. The 3D HDTV system uses Blu-ray® or streaming medium to send a specially coded signal to special HDTV sets that work with active glasses based on liquid crystal diode (LCD) or polarized "passive" glasses to actually display signal. This technology can display remarkable images, but since December 2011 it has received a lukewarm response from the consumer public.
3D HDTV sets start as common HDTV. They can display 1 920 of 1,080 pixels, also referred to as 1080p resolution and usually have large flat screens. One distinguishing element, which is usually excellent 2D sets, is that it has to offer refresh rates at least 120, but usually 240 Hertz, leading to better reproduction of movement in 2D and 3D images.
Active 3D HDTV with sets have another feature that 2D sets are missing. They have special devices that emit an infrared signal to the active glasses of the shutter wearing. These glasses quickly darken through each eye - usually 30 times per second - synchronized with the screen. The screen shows a picture of the left eye, then switches to the right eye and then back. Since the glasses prevent both eyes to see the screen simultaneously, the viewer's brain fills in empty areas and ends up seeing a 3D picture.
Passive 3D sets work a little differently. These sets have a polarizing filter on the screen where alternating lines emit light at a different polarization angle. They display the image for the left line on one row of rows and a picture for the right eye on the second line of the line. Viewers wear polarizing glasses that block the image of the right eye from reaching the left eye and more versa.
3D HDTV images can be quite noticeable and look almost like aboutKno to the world. This technology has only been accepted slowly, probably due to combined limited content, high cost and wearing requirements. More than anything else, glasses have proved to be the main source of consumer dissatisfaction. Active glasses with shake tends to be expensive, heavy and incompatible across manufacturers, which makes people impossible to bring their X -friend goggles to a friend of Y. Although passive glasses solve these problems, this technology has been relatively rare since the end of 2011.