how digital cinema works - projector

For the audience, the most important aspect of digital film is the projection system.
This is the last piece of technology that controls how the movie looks at the end.
Almost everyone agrees that a good movie projector with original film prints will produce a wonderful, vibrant picture.
The problem is that every time you play a movie, the quality of the movie drops a bit.
When you go to a movie that has been playing for a few weeks, you may see hundreds of scratches and dirt.
Many critics argue that projecting digital films is not as good as original film printing, but they recognize that digital films look the same every time they are shown when film printing is gradually degraded.
Imagine the CD compared to the tape.
The sound is a bit distorted every time the tape is played.
Whenever you listen to a CD, its digital information sounds exactly the same (
Unless scratched).
Nowadays, there are two kinds of projector technology in digital cinema: Micro-mirror projector and LCD projector.
Micro-mirror projectors like digital light processing for Texas Instruments (DLP)
Line, forming an image with a micro-mirror array.
In this system,
The power light shines through the prism.
Prism divides the light into three colors: red, green and blue.
Each color beam hits a different digital micro-mirror device (DMD)--
A semiconductor chip covered by more than one million hinge mirrors.
Depending on the information encoded in the video signal, the device can flip the tiny mirror to reflect the colored light.
In general, small dots of reflected light form a monochrome image.
To see how this works, imagine a group of people on the ground at night, each holding a square --foot mirror.
A helicopter flew overhead and lit the crowd.
You will see different reflection images, depending on who holds up the mirror.
If everyone works together, they can spell out words or form images.
If you have more than a million people pressing side by side, you can make very detailed pictures.
In fact, most of the individual mirrors are from "on "(
Reflected light)to "off" (
No reflected light)
Come back thousands of times every second.
Mirrors that flip over a larger proportion of the time reflect more light, and therefore form pixels that are brighter than mirrors that don't flip.
This is how the CDN creates a gradient between light and dark.
Mirrors that flip quickly from open to off produce different shades of gray (
Or change the shades of red, green and blue in this case).
Each micromirror chip reflects the monochrome image back to the Prism and recombines the color.
Recombine red, green and blue to form an all-color image projected on the screen.
LCD projectors such as digital image optical amplifier of JVC (D-ILA)
Line, working on a slightly different system.
These projectors reflect high
The intensity light of the fixed mirror covering the liquid crystal display (LCD).
The projector is based on a digital signal, guiding some liquid crystals through the reflected light, and some liquid crystals block the reflected light through the reflected light.
In this way, the LCD is modified high
Create the intensity beam of the image. There's a flip
Digital projector technology.
In both projector designs, a single pixel may be interrupted from time to time.
When this happens, it reduces the image quality of each movie shown on the projector.
In contrast, if the print of a film is scratched, only that particular film is damaged ---
It looks good next time.