Aspect | Ratio | The ratio | between | the width and height of the TV | picture on the | screen. In a normal TV | set the aspect ratio is 4 | |||||||||||
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| to 3 (4:3). The | new aspect | ratio | in HDTV is 16:9 which resembles the aspect ratio in a movie theatre | |||||||||||||
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| (Widescreen). | New TV | systems | support | both 4:3 and | 16:9 aspect ratio and can automatically | switch between | ||||||||||
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Audio Video (A/V) | A term often used | when | discussing | a channel on | a TV | receiver | or on | video equipment, | which | has | been | |||||||
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| within the TV set to prevent picture distortion and skewing. It is also used for | ||||||||||||||||
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ATSC |
| ATSC: Advanced Television Systems Committee. | Formed to establish | technical | standards for advanced | |||||||||||||
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CVBS |
| Composite | Video | Baseband | Signal. | In broadcast | television this | refers to the video signal, |
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DTV |
| Digital television. | Generic term | that | refers to all digital | television | formats, including | television | ||||||||||
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DOLBY | Digital | Dolby Digital - | digital audio | standard | that is part of the U.S. digital | television | standard; | also called | ||||||||||
5.1.The channels consist of front left, front right, front center, surround or rear left, surround or rear right, and a separate subwoofer
Digital Tuner | A digital tuner | serves | as the | decoder | required | to receive | and | display digital broadcasts. It can be included inside | TV sets or | ||
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HDTV | The generally | agreed | upon | definition | of HDTV | is approximately | twice | the vertical | and horizontal picture resolution | of today's | |
| NTSC TV, which essentially makes the picture twice as sharp. HDTV also has a screen ratio of 16:9 as compared with most of | ||||||||||
| today's TV screens, which have a screen ratio of 4:3. HDTV offers reduced motion artifacts (i.e. ghosting, dot crawl), and | ||||||||||
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NTSC | National television system committee. | The organization | that developed | the analog | television standard currently in use in the | ||||||
| U.S. Canada, and Japan. Now generally used to refer to that standard. The NTSC standard combines blue, red, and green | ||||||||||
| signals modulated as an AM signal with an FM signal for audio. |
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Progressive Scan In Progressive Scanning all the horizontal scan lines are scanned on to the screen at one time. The Digital TV and HDTV Standards accept both Interlaced Scan and Progressive Scan broadcast and display methods.
ResolutionResolution: A measurement of the finest (smallest) detail that is visible in a video image. TV Resolutions may be expressed as number of pixels in an image; or more commonly, "As Total Number of (horizontally scanned) Lines used to create the image. Standard Digital TV Resolutions:
SDTV: 480i - The picture is 704x480 pixels, 480p - The picture is 704x480 pixels.
HDTV: 720p - The picture is 1280x720 pixels, 1O8Oi - The picture is 1920x1080 pixels, 1O8Op - The picture is 1920x1080 pixels.
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