High definition television

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High Definition Television, or HDTV, is one of the formats used in digital television broadcasting.

The HDTV screen uses a 16:9 aspect ratio. The high resolution images (1080x1920 or 720x1280 pixels) allow much more details to be shown. The images are expected to be at least 6 times as sharp as standard definition television or NTSC or PAL standard analog television.

Reference: [ATSC]