Sunday, March 26th, 2017

Dolby Shows Glasses Free 3D at SCV IEEE CE meeting

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June 2013 - At the monthly meeting of the Santa Clara Valley chapter of the IEEE Consumer Electronics society in June, Dolby Labs in Sunnyvale presented their laptop sized and large format (56") glasses free Stereoscopic 3D display/TV system to a standing room only audience. The S3D TV marketplace has been rocky, as the hype & allure along with the opposing criticism of the technology has been available at levels far beyond worthwhile and properly watchable content. In this space, recent announcements such as ESPN's recent cancellation of their 24hr S3D channel have been the main news. Dolby Labs hopes to change that, by addressing the two big criticisms of the S3D experience - low resolution images, and the need for glasses.

Based on industry dicussions with content providers such as Cameron Pace, BBC, ESPN, BSkyB and others, being able to provide S3D content in the home in full theatrical resolution, a reduction in the cost of acquisition and production, improved comopression formats and the elimination of glasses to provide for a multiple person home viewing experience. With these goals in mind, they created the Dolby cionema 3D system, This is a complete content through consuption solution that was created in partnership with Philips. The Philips team did the basic 3D video research, while Dolby privided the content creation solutions and encoding.decoding solutions, This resulted in the design and modification of a display that could accept the updated signal from the new compression logic and have new layers in the display design. The 56" TV that was shown, was based on a 4K 120Hz panel that was laminated to a high resolution lenticular film to create a functional 1080p 30fps display.

The solution is licenable and is panel supplier agnostic. The film based lenticular lens can be scaled up to over 72" is size and down to 13" panel sizes. To demonstrate, they also were showing a MacBook Pro that had an updated lenticular glasses free panel, A key to the system was the use of a repeating visual cone in the spatially multiplexed view with the film, as opposed to the only speciific windows of viewing that are found in paralax barrier displays. This gives a freedom of movement both horizontaly in front eh screen and in distance from the screen, By using a UHD (4K) panel, the resolution loss due tothe lenticular strucuture still results in a standard 1080p image at either 24 or 30fps.

The systemm works by displaying a 2D image with depth map information that is stored int he content metadata. This is then decoded as needed for the display and driven by standard S3D BluRay content, in 2013, this auto-conversion algorithim is currently implemented in and FPGA solution. It is being modified and will be incorporated as an IP block in TV SOCs for the model year 2016.

The display and encoding system will be on the show floor at the upcoming IBC conference. A copy of the presentation that was given at the IEEE meeting can be found at: http://ewh.ieee.org/r6/scv/ce/recentevents.html
 

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