Sharp XG-C40XU operation manual Glossary, Aspect ratio

Glossary

Anti-aliasing digital keystone correction

Function to digitally correct a distorted image when the projector is set up at an angle.

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

Optimizes 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.

Fit to screen

Function to adjust an image without a 4 : 3 aspect ratio, and project it in a 4 : 3 ratio.

Freeze

Function to freeze a moving image.

GUI

Graphical User Interface. User interface with graphics that allow easier operation.

I/P conversion

Function to convert an image between “Interlaced” and “Progressive” scan displays.

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.

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.

Presentation tools

Helpful tools used to emphasize keypoints throughout a presentation.

RS-232C

Function to control the projector from the computer by using the RS-232C ports on the projector and computer.

Startup image

The image displayed when the projector is turned on.

Status function

Displays the settings of each adjustment item.

Sync

Synchronizes the resolution and phase shift of two signals. When receiving an image with a resolution different from that of the computer, the projected image may be distorted.

Sync on green

Video signal mode of a computer which overlaps horizontal and vertical sync signal to green color signal pin.

Wireless mouse

Function to operate the mouse control of a computer with the supplied remote control.

XGA resolution

Resolution with 1,024  768 pixels that uses the signal of an IBM/AT compatible (DOS/V) computer.

Appendix

E-60