Active learning assignment Subject :- AVS Topic:- 3-D TV Guided by :- Mr. Gunjan Jani Branch :- Electronics and communication Batch :- b2 Group members:- Harsha Singh Siri Chandana Medehal –

CONTENTS History Introduction Techniques Employed Producing Technologies Broadcast Architecture Receivers Advancements

Introduction to 3D TV 3D television (3DTV) is television that conveys depth perception to the viewer by employing techniques such as stereoscopic display, - technique for creating or enhancing the illusion of depth multi-view display, 2D-plus-depth, or any other form of 3D display. Most modern 3D television sets use an active shutter 3D (blocking 1 eye at a time) system or a polarized 3D system (polarized glasses), and some are auto stereoscopic without the need of glasses. FACT :- The first public 3D movie The Power of Love was displayed. [1922]

History The stereoscope was first invented by Sir Charles Wheatstone in It showed that when two pictures are viewed stereoscopically, they are combined by the brain to produce 3Ddepth perception. Stereoscopic 3D television was demonstrated for the first time on 10 August 1928, by John Logie Baird using electro- mechanical and cathode-ray tube techniques.. The first 3D TV was produced in 1935.

Display Technologies The requirement is to display offset images that are filtered separately to the left and right eye. Two strategies are used- have the viewer wear eyeglasses to filter the separately offset images to each eye. have the light source split the images directionally into the viewer's eyes (no glasses required).

Techniques Employed  With filters/lenses:  Anaglyph 3D - with passive colour filters  Polarized 3D system - with passive polarization filters  Active shutter 3D system - with active shutters  Head-mounted display - with a separate display positioned in front of each eye, and lenses used primarily to relax eye focus  Without lenses: Auto stereoscopic displays, sometimes referred to commercially as Auto 3D.

Producing Technologies Stereoscopy is the most widely accepted method for capturing and delivering 3D video. It involves capturing stereo pairs in a two-view setup, with cameras mounted side by side and separated by the same distance as is between a person's pupils. Multi-view capture uses arrays of many cameras to capture a 3D scene through multiple independent video streams. Plenoptic cameras, which capture the light field of a scene, can also be used to capture multiple views with a single main lens. 2D plus depth processing can be used to recreate 3D scenes even from a single view and convert legacy film and video material to a 3D look, though a convincing effect is harder to achieve and the resulting image will likely look like a cardboard miniature.

3D-ready TV sets o 3D-ready TV sets are those that can operate in 3D mode (in addition to regular 2D mode) using one of several display technologies to recreate a stereoscopic image. These TV sets usually support HDMI 1.4 and a minimum output refresh rate of 120 Hz; glasses may be sold separately.

Broadcast Architecture

Onkyo Receiver All Onkyo A/V Receivers support latest 3D technology. Streaming online contents with super high image quality. The HDMI inputs let you to connect in different high definition sources like Blu-ray player, game console or a cable or satellite tuner, which converts all high definition modes to your Onkyo A/V receiver. Here are more functions on Onkyo TX NR709 3D A/V Receiver. Audyssey MultEQ XT  This is an advanced high definition room correction technology for high quality sound speakers and sub woofers. This feature gathers frequency and time domain measurement from up to eight location for listening mode, to deliver a unique, balanced and natural sound.

Advancements  The human eye needs approximately 50 frames per second in order to see film as one continuous image. 3D effectively halves that so each eye would only see 25 frames per second and get some flicker. Modern technology has been able to significantly up that frame rate (or refresh rate in televisions) so that we can achieve the illusion of 3D.  In the coming years, keep a look out for technology that uses auto stereoscopy, or 3D that doesn't require glasses in any way. The Nintendo 3DS, Nintendo's newest portable 3D gaming device, is one such device. One of its tricks is syncing a lenticular display with its forward-facing camera. By using eye recognition, it can track where the user's face is and shift the display to accurately display 3D no matter how the user views the screens

 In a CEATEC 2011 exhibition, Hitachi released glasses-free 3D projection systems that use a set of 24 projectors, lenses, and translucent half mirrors to superimpose 3D images with a horizontal viewing angle of 60 degrees and a vertical viewing angle of 30 degrees. Besides Hitachi, Sony is also working on similar technologies.  Various other display techniques have been described, such as holography, volumetric display which was used in Doctor Who Dimensions in Time, in 1993, by 3rd Rock From The Sun in 1997, and by the Discovery Channel's Shark Week in 2000.

World record The 2011 UEFA Champions League Final match between Manchester United and Barcelona was broadcast live in 3D format on a Ukrainian-produced EKTA screen in Gothenburg, Sweden. The screen made it to The Guinness Book of World Records as the world's biggest screen. The live 3D broadcast was provided by the company Viasat.

REFERENCES tv.html#axzz3iQg7ta2v tv.html#axzz3iQg7ta2v glasses glasses / / entertainment/ entertainment/

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