DTV/HDTV (Digital Television) Comparison Chart
Below is a comparison chart between all digital television signals and devices available today.
| SDTV (Standard Definition) |
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EDTV (Enhanced Definition) |
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HDTV (High Definition) |
Basic level of quality and resolution for both analog and digital signals.
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High resolution: 1024x480 or 480p
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Extremely High Resolution:
1280x720 (720p) to 1920x1080 (1080i/1080p) pixels |
| Low resolution: normally 500x520 pixels or 480i |
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Usually requires a set top box (cable or satellite) to receive DTV channels |
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Requires either a set top box or a built in HDTV tuner to receive channels |
| Analog SDTV signals will continue to be broadcasted through 2008 |
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Digital pictures will be free from the "ghosts" and "snow" that can affect analog transmissions |
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Digital pictures will be free from the "ghosts" and "snow" that can affect analog transmissions |
| A VHS VCR player is an example that outputs an SDTV analog signal |
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A progressive scan DVD player is an example of an EDTV signal |
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Best available picture resolution, clarity and color |
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Multicasting and data streaming is available |
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Dolby surround-sound. |
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Available in widescreen 16:9 aspect ratio |
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Available in widescreen 16:9 aspect ratio |
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