NHK demos Hybridcast streaming, teams up internet and cable TV for superior 3D delivery

With all the hubbub surrounding competing 3DTV technology, it's easy to forget the all important delivery process: how is your TV getting its content, and what does it mean for the viewer? It may seem trivial, but the answer is all-too important to the folks at NHK, who are hoping to facilitate Full HD delivery for 3D content using a new hybrid broadcast system. Think you already have Full HD 3D? Think again: most broadcast 3D content is delivered via side by side transmission, forcing two images (one for each eye) into a single 1080p frame. This allows 3D content to pipe through existing HD channels, but when the separate images are reconstituted and upscaled, resolution and picture quality suffer. NHK hopes to resolve this by fusing broadcast transmission with broadband streaming, what it calls Hybridcast. In a recent dual-stream demo, NHK sent the image for one eye over standard HD TV broadcast pipes, and the other through those wondrous internet tubes, eventually reassembling the two streams into a single, Full HD image, ready for your hungry eyeballs. This prototype delivery system is little more than a demo right now, but with any luck, it'll be giving us a whole new reason to freak out about broadband bandwidth caps in the near future.

Tech-On

NHK (pdf)

BBC HD quietly begins broadcasting in 1080p, but not all Sony HDTVs can handle it

We'd pretty much given up waiting for broadcast 1080p, since other than some video on-demand services you'll generally need to stick to Blu-ray to tick that box, but around the end of March BBC HD changed all that. It's taking advantage of a part of the Freeview HD spec that allows the broadcaster to dynamically select between 1080p / 25fps and 1080i / 25fps transmission and the boxes are mandated to be able to output 1080p / 50fps. The reasoning for the decision is to provide better picture quality on material that was shot that way, unfortunately it's coming to light now because some HDTVs are having trouble handling the switch and causing an audio dropout when the format shifts, as mentioned by UK buyers guide What Hi-Fi. As if Sony didn't have enough to deal with, the overwhelming majority of complaints appear to center around its TVs and the company has promised more information in the next 7 - 10 days about a fix that will take care of the problem.

HDTV Test Sony UK, What Hi-Fi?