3D television
3D TV is the abbreviation for 3D Television, thus for a television transmission of video signals separately, so that the impression is created for the left and right eye of spatial depth.
The video signal was recorded separately for this already in the stereoscopic method and can be embedded in several ways in the television signal to the audience back home. Even with the advent of color television stereoscopic contents were sent anaglyph. To this end, the video signal is for a free eye of the red color component for the other eye and the blue color component and placed back over the other. Then red and blue 3D glasses are required to view, but other color combinations can be used for it.
Another possibility is the transmission of two video signals in separate video stream or a video stream broken down into fields ( line-sequential ). The advantage is that the colors are retained and it is also possible to only display a video signal, but then the latter the familiar 2D image remains, but it can show on normal TV sets reasonable. If both video signals to be displayed in full color stereo 3D, the image must be processed only in real time. It is used in every even field (field ) only the image for one eye is shown and at every odd field the other image, and the viewer needs to look at a shutter glasses, which briefly hides the image for the wrong eye. The color fastness is preserved, but by the periodic filtering fatigue effects could arise in the viewers. This type of transmission (field -sequential ) is not used in the TV control mode, but only for special " interlace 3D" DVDs.
The world used HD-compatible 3D TV version with two anamorphic compressed video streams in a HD channel called "side- by-side" ( side by side), abbreviated as SBS. It can be received by any HDTV receiver and forwarded to a modern 3D-ready TV, which equalizes the two partial images on the full 16:9 format ( therefore with slight loss in resolution ) and eg with 100 or 120 Hz frame rate is superimposed on one another. The information necessary for 3D separation LCD shutter glasses are synchronized by an additional infrared transmitter, with varying depending on the 3D TV manufacturers parameters. Another 3D rendering method is line by line with circular polarization, ie a simple polarized glasses separates the left image (eg left-handed polar. ) And the right image of each other, the vertical resolution is halved.
Satellite operator Eutelsat beamed from 2009 to 2011 on Euro Bird 9 a test transmitter with stereo 3D material, inter alia, by Sensio from. SES Astra also operational since May 5, 2010 to 23.5 degrees East a free to air channel demo with three-dimensional content, now only on Astra 19 degrees East. Since October 3, 2010 Sky Germany transmits on Astra 19 degrees East, 12382 MHz hor., SR 27500, FEC 9/10, DVB-S2, QPSK a 3D TV channel, which shows during the day mostly unencrypted 3D demos.
In Servus TV a short stereo 3D movie with a ski slope is temporarily sent at night in the Alps in the Color code method, which is a modern variant of the color anaglyph with yellow- blue 3D glasses.