Sharp PG-C20XE Operation Manual - Page 53
Glossary
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Glossary Active digital keystone correction Corrects keystone distortion caused when the projected image is not perpendicular to the screen. This method provides not only horizontal correction, but vertical as well, thus maintaining the original 4:3 aspect ratio and eliminating jag lines. Aspect ratio Width and height ratio of an image. The normal aspect ratio of a computer and video image is 4 : 3. There are also wide images with an aspect ratio of 16 : 9 and 21 : 9. Auto sync Optimises projected computer images by automatically adjusting certain characteristics. Background Initial setting image projected when no signal is being input. Clock Clock adjustment is used to adjust vertical noise when clock level is incorrect. Compatibility Ability to use with various image signal modes. Composite sync Signal combining horizontal and vertical sync pulses. Dot by dot Mode that projects images in their native resolution. Freeze Function to freeze a moving image. Gamma correction Offers richer image viewing with dark scene phase and contrast correction according to image and room brightness. Three gamma settings are available. GUI Graphical User Interface. User interface with graphics that allow easier operation. Intelligent compression and expansion High quality resizing of lower and higher resolution images to fit the projector's native resolution. Magnification Digitally zooms in on a portion of an image. Power save mode function Function with toggle switch to control the quantity of projected light. Select "ON" or "OFF" to decrease or increase brightness, power consumption and fan noise. PDF Portable Document Format. Documentation format used to transfer text and images from the CD-ROM. Phase Phase shift is a timing shift between isomorphic signals with the same resolution. When phase level is incorrect, the projected image typically displays horizontal flicker. RS-232C Function to control the projector from the computer by using the RS-232C ports on the projector and computer. Sync on green Video signal mode of a computer which overlaps horizontal and vertical sync signal to green colour signal pin. Wireless mouse Function to operate the mouse control of a computer with the supplied remote control. XGA resolution Resolution with 1,024 ן768 pixels that uses the signal of an IBM/AT compatible (DOS/V) computer. 50 Appendix