Appendix A: Glossary
Channel Number | f A number that uniquely identifies a specific channel retained in projector memory. |
| The projector can retain up to 50 channels. |
Checkbox | f A menu item that indicates whether an option is currently in effect (checked) or not |
| (unchecked). |
Chrominance | f The signal representing the color information (hue and saturation) when the image is |
| represented as separate chrominance and luminance. Same as “chroma”. |
Color Gamut | f The range of colors allowed in a specific system, as defined within a triangular area |
| located on the CIE color locus diagram whose corners are the three primaries defined |
| in the system. Also known as color space. |
Color Shift | f A change in the tint of a white field across an image. |
Color Temperature | f The coloration (reddish, white, bluish, greenish, etc.) of white in an image, measured |
| using the Kelvin (degrees K) temperature scale. Higher temperatures output more |
| light. |
Color Wheel | f An optical component, the color wheel is made up of red, green and blue and |
| sometimes white segments. The light generated by the lamp is sequentially filtered by |
| the color wheel (as it’s spinning) into R, G, B color primaries and passed to the DMD |
| which then creates an image for each color. |
Component Video | f See YCbCr or YPbPr. |
Composite Video | f The output of video tape players and some computers, characterized by |
| synchronization, luminance and color signals combined on one output cable. |
Contrast (ratio) | f The degree of difference between the lightest and darkest areas of the image. |
Convergence | f The alignment of the red, green, and blue elements of a projected image so that they |
| appear as a single element. |
Curved Screen | f A projection screen which is slightly concave for improved screen gain. Curved |
| screens usually have screen gains, which are greater than 1 but viewing angles much |
| less than 180°. Curved screens are not recommended for use with this projector. |
DDC f The Display Data Channel VESA standard enables communication between PCs and | |
| monitors, and is based on |
DDI | f A “direct digital interface” signal can be supplied to the projector via an optional |
| digital input module installed in INPUT 5. For example, you can input an SMPTE- |
| 259M signal using a Serial Digital Input Module or input an |
| from a Digital HDTV Serial Input Module. |
DMD™ | f Digital Micromirror Devices™ used in this projector for processing red, green, and |
| blue color data. |
Decoder | f Located at INPUT 3 and INPUT 4, this device converts NTSC 3.58, NTSC 4.4, PAL, |
| |
Detail | f The sharpness of a display from a video source. |
