
Glossary
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SVGA | A type of video signal with a resolution of 800 (horizontal) ⋅ 600 (vertical) dots which is used by IBM |
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A video signal which has the luminance component and color component separated in order to provide better image quality. | |
| It refers to images which consist of two independent signals: Y (luminance signal), and C (color signal). |
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SXGA | A type of video signal with a resolution of 1280 (horizontal) ⋅ 1024 (vertical) dots which is used by IBM |
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Sync (synchronization) | The signals output from computers and RGB video equipment 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 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. |
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Tracking | The signals output from computers and RGB video equipment 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 images. |
USB | An abbreviation for Universal Serial Bus. USB is an interface for connecting personal computers to peripheral devices which only support |
| relatively low data transmission speeds. |
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VGA | A type of video signal with a resolution of 640 (horizontal) ⋅ 480 (vertical) dots which is used by IBM |
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XGA | A type of video signal with a resolution of 1024 (horizontal) ⋅ 768 (vertical) dots which is used by IBM |
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