Tag Archives: Texas Instruments

High Frame Rate 3D Demonstration

The document speaks to the technology but make no mention of what people thought after seeing the demonstration. Generally speaking it seemed very clear that the benefits of 48 frames to the eye was easily seen. Motion judder was eliminated. The picture looked more natural.

When 60 frames to the eye was shown, not only was the judder removed but the foreground ‘resolution’ popped out. In a sense, this is unnatural since when one is focused on a distant object the foreground objects are not focused. On the other hand, directing with focus is a tool that directors use. If the director doesn’t want to limit focus, it is nice that this resolution becomes available.

4K; And Then There Were Two

What does this mean for exhibitors and the audience? More light, and more dark. It seems that each generation of the DLP chip constantly refines the edges of, and space between the mirrors, which refines the amount of “off” – the non-reflecting space – and makes the reflecting segments comparatively more “on”…thus a boost in the dynamic range, or “contrast” spec, which the larger size also adds to. The PR doesn’t list how the 2500:1 contrast ratio is measured, but it is a 25% increase from what Barco prints as their C Series spec of 2000:1, while Christie now specifies >2100:1 full field on/off. Presuming that everyone is using the same measuring technique, with more light, larger screens can be lit. [Side note: Barco’s spec says that it takes 32,000 BTUs per hour to get that kind of light from a 6.5kW zenon bulb, which has an average life of 900 hours. No one is saying that this advance will imply less electricity or longer life for the bulbs.]

4K is a nice number, but no one ever walks out of the theater saying that there were too few pixels. There are those who point out that the constraining factor in quadrupling the pixels from 2K to 4K is actually the lens, which can’t resolve that much resolution anyway. 

Because of the increased area, more light will reflect off the same number of micro-mirrors. Therefore, 3D should get the largest noticeable boost – 5% was the number that one OEM used. In a universe that is starting from 10 candela/meter2, 5% more light would be a greater benefit for a 3D audience than the same higher gain would bring for the 2D audience in a larger auditorium.

So, what does this chip do with a 4K 3D image? It doesn’t. We know that there was surprise when Sony announced that they were creating 3D by breaking up their LCOS imager into two 2K sections, one for each eye’s image. But there doesn’t seem to be any loss for orders after exhibitors saw the results.

TI is also keeping a 3D image at 2K, but they make the point that with this release “we will use the entire imager to display 3D in order to pass the maximum amount of light which is needed for 3D display. In other words the 2K image will be scaled up to 4K. We say, All the Imager, All the Time.”  

It makes sense to go for the increase in light, however small it is. The other part of the equation is the amount of bandwidth that can be pushed into the TI cards, but that is more math than is comfortable in this commentary on a simple press release.


23 degrees…half the light. 3D What?

Laser Light Engines gets IMAX funding– Putting Light on the Subject

Optical Efficiency in Digital Cinema Projectors

3Questions – Laser Light Engines

DCI Compliance – Then There Were Three [Updated]

The good news is that after 10 years of TI doing the yeoman work of making the digital cinema industry happen, they finally have gotten two of their OEMs past the goal.

They also announced that there are now 300,000 3D capable projectors in the field. But that was a different group making noise for a different industry.

Congrats to TI. Next up, a server company…bets anyone?

[Update: Christie PR was able to help parse the noise…]:

Yes, there is a difference in our announcement.  Barco’s announcement says only that they’ve passed the “procedural” portion of the CTP.  Christie is announcing they’ve passed everything, which includes the  procedural AND design aspects, so we’re much closer to receiving complete DCI compliance certification.
Here’s Barco’s announcement:
Kortrijk, Belgium, 17 March 2010 — Barco, a global leader in digital cinema announced today that its ‘Series 2’ digital cinema projector has successfully passed the procedural test for DCI compliance administered by CineCert, the leading 3rd party authorizing test facility.
Hope this helps.

 So there. We now know better what to watch for.