But here BenQ also has a way to keep the colours accurate in the longer term. Its ‘CinematicColor’ processes employ precise nanometer-level references for its colour-wheel angles and coating. 709 colour gamut (DCI-P3 is 26% larger than Rec.709).Īccurate colour has long been a BenQ strength, especially in delivering excellent out-of-the-box performance in this regard. The X3000i claims to cover 100% of the DCI-P3 wide colour gamut, so of course goes significantly beyond the full Rec. The result is 3000 lumens of illumination, and also better colour control. Green output is here boosted by 40%, which brings a claimed 8%-12% increase in overall brightness when compared to a 3LED projector. There’s another brightness boost here in the choice of light engine, a 4LED light source.ĤLED adds an additional blue ‘pump’ LED to the 3LED ecosystem as with the first blue LED its light is converted to green via ceramic phosphors in order to amplify the overall output of green light. The larger micromirrors are not the only way this projector promises to achieve higher brightness (so also improving on the slightly limited contrast that some have noted from the smaller chips). So this DMD chipset is comprised of the DLP650TE DMD, the DLPC7540 display controller, and the DLPA100 power management and motor driver. Together with the DMD chip itself, there is a display controller and a motor driver. And that yields a potential 98% increase in mirror area. Perhaps TI thought the same, as the new DLP650TE retains the easier geometry of four-flash 1920×1080 to build up UHD pictures on screen, and it uses the additional space to have larger mirrors, now 7.6μm in pitch. We’ve never understood how two hits of that resolution could yield UHD without some weird overlapping requiring radical pre-processing it seems akin to the audio no-no of non-integer resampling. Good luck working out the geometry of that procedure. Easy maths.īut the 0.66-inch DMD commonly used for home cinema until now had a native resolution of 2716×1528, and this hit the screen twice per frame. The native resolution of 0.47-inch DMDs has been 1920×1080, which is then delivered four times per frame to yield 3840×2160 UHD resolution. The operation of the smaller DMDs is easy to visualise. And in terms of those multiple ‘flashes’, we never understood the geometry of the larger DMDs. Latency: 16.67ms 8.33ms (1080p/120Hz) 4.16ms: (whd): 272 x 197 x 259mmīut hitherto, the 0.65/66-inch DMDs kept the individual mirrors at the same 5.4-micrometre size as on the smaller DMDs, and instead squeezed in more of them. Outputs: HDMI eARC, optical digital, stereo 3.5mm Inputs: 3 x HDMI, USB power, RS-232, 12V trigger Projection technology: DLP650TE 1920x1080 four-flash DMD delivering 3840x2160 4LED light engine Larger would be better in quality terms if it allowed a larger pixel size, which could deliver more light, and so less noise. TI has long made these DMD chips in a variety of physical sizes, but the key ones for home cinema use have been either 0.47 of an inch or 0.65 (or 0.66) of an inch. The DLP650TE DMD in this projector has a native resolution of 1920 x 1080, with all those tiny mirrors pivoted four times each frame to allow sequential delivery of four sections of a full Ultra High Definition (3840 x 2160) image to the screen.īeneath the mirrors is a two-dimensional array of 1-bit CMOS memory cells, and the deflection angles of the micromirrors are individually controlled by changing the address voltage of those cells. First developed by Texas Instruments in 1987 and released as the first ‘chip’ in 2000, these devices use millions of tiny aluminium mirrors that can be mechanically flipped to point in different directions. It’s always worth revisiting how the DMD (digital micromirror device) used in DLP projection works, because it seems so very remarkable.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |