Pillarboxing
Black margins at the left and right of the image. Pillarboxing appears when a narrower image is packed into a wider frame without changing
the aspect ratio.
Pixel
Short for Picture Element. The most basic unit of an image. Pixels are arranged in lines and columns. Each pixel corresponds to a micromirror
within the DMD™; resolutions reect the number of pixels per line by the number of lines. For example, a 1080p projector contains 1080
lines, each consisting of 1920 pixels.
Pond of mirrors
Area around the periphery of the DMD™ containing inactive mirrors. The pond of mirrors may cause artifacts, for example during the edge
blending process.
Pr, Pb
Color difference signals used with ‘Y’ for analog Component Video inputs. They provide information about the signal color. Not to be
confused with Cr, Cb.
Primary colors
Three colors any two of which cannot be mixed to produce the third. In additive color television systems the primary colors are red, green and
blue.
Progressive scanning
A method of updating the image in which the lines of each frame are drawn in a sequence, without interlacing.
Pulldown
The process of converting a 24 fps lm footage to a video frame rate (25 fps for PAL/SECAM, 30 fps for NTSC) by adding extra frames. DP
projectors automatically carry out reverse pulldown whenever possible.
Resolution
The number of pixels in an image, usually represented by the number of pixels per line and the number of lines (for example, 1920 x 1200).
Notes
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