Glossary
SVGA | A type of video signal with a resolution of 800 (horizontal) x 600 (vertical) dots that is |
| used by IBM |
|
|
A video signal that has the luminance component and color component separated in | |
| order to provide better image quality. |
| It refers to images that consist of two independent signals: Y (luminance signal), and C |
| (color signal). |
|
|
Sync. | The signals output from computers have a specific frequency. If the projector frequency |
(Synchronization) | does not match this frequency, the resulting images will not be of a good quality. The |
| process of matching the phases of these signals (the relative position of the crests and |
| troughs in the signal) is called “synchronization.” If the signals are not synchronized, |
| problems such as flickering, blurriness and horizontal interference can occur. |
|
|
Tracking | The signals output from computers have a specific frequency. If the projector frequency |
| does not match this frequency, the resulting images will not be of a good quality. The |
| process of matching the frequency of these signals (the number of crests in the signal) is |
| called “tracking.” If tracking is not carried out correctly, wide vertical stripes will appear |
| in the projected image. |
|
|
VGA | A type of video signal with a resolution of 640 (horizontal) x 480 (vertical) dots that is |
| used by IBM |
|
|
XGA | A type of video signal with a resolution of 1024 (horizontal) x 768 (vertical) dots that is |
| used by IBM |
|
|
YCbCr | The carrier signal that is contained in the color bar signal used in modern TV |
| transmissions. The name comes from the Y (luminance) signal and the CbCr (chroma |
| (color)) signals. |
|
|
YPbPr | The carrier signal that is contained in the color bar signal used in |
| (HDTV) transmissions. The name comes from the Y (luminance) signal and the PbPr |
| (color difference) signals. |
|
|
62