10.Glossary
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Aspect Ratio | The ratio between the width and height of the TV picture on the screen. In a normal TV set the | ||
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| aspect ratio is 4 to 3 (4:3). The new aspect ratio in HDTV is 16:9 which resembles the aspect | |
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| ratio in a movie | |
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| theatre (Widescreen). New TV systems support both 4:3 and 16:9 aspect ratio and can automat- | |
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| ically switch between them. | |
FRANÇAISE | Audio Video (A/V) | A term often used when discussing a channel on a TV receiver or on video equipment, which has | |
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| been | |
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| especially designed to accept VCR | |
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| special circuitry 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 | |
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| advanced | |
ESPAÑOL |
| television systems, including digital high definition television (HDTV). | |
CVBS | Composite Video Baseband Signal. In broadcast television this refers to the video signal, includ- | ||
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| ing the colour information and syncs. | |
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| Component Video | Component Video Input is a type of connection that uses a | |
| Input (Y Pb Pr) | top boxes or analog DVD players to connect a signal to the TV. By offering the | |
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| (YPbPr) the primary colors, red, green and blue are connected from a set top box directly into | |
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| the TV allowing for the signal to display on the screen. | |
| DTV | Digital television. Generic term that refers to all digital television formats, including high- | |
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| definition | |
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| television (HDTV) and | |
| DOLBY Digital | Dolby Digital - | |
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| dard; also called | |
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| 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 | |
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| included inside TV sets or via a cable receiver box. | |
| HDTV | The generally agreed upon definition of HDTV is approximately twice the vertical and | |
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| horizontal picture resolution of today’s NTSC TV, which essentially makes the picture twice | |
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| as sharp. HDTV also has a screen ratio of 16:9 as compared with most of today’s TV screens, | |
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| which have a screen ratio of 4:3. HDTV offers reduced motion artifacts (i.e. ghosting, dot crawl), | |
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| and offers 5.1 independent channels of | |
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| NTSC | National television system committee. The organization that developed the analog television | |
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| standard currently in use in the U.S., Canada, and Japan. Now generally used to refer to that | |
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| standard. The NTSC standard | |
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| combines blue, red, and green signals modulated as an AM signal with an FM signal for audio. | |
| Progressive Scan | In Progressive Scanning all the horizontal scan lines are scanned on to the screen at one time. | |
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| The Digital TV and HDTV Standards accept both Interlaced Scan and Progressive Scan broadcast | |
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| and display methods. | |
| Resolution | Resolution: A measurement of the finest (smallest) detail that is visible in a video image. TV | |
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| Resolutions may be expressed as number of pixels in an image; or more commonly, | |
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| As Total Number of (horizontally scanned) Lines used to create the image. | |
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| Standard Digital TV Resolutions: | |
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| SDTV: 480i - The picture is 704x480 pixels, 480p - The picture is 704x480 pixels. | |
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| HDTV: 720p - The picture is 1280x720 pixels, 1080i - The picture is 1920x1080 pixels, | |
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| 1080p - The picture is 1920x1080 pixels. | |
| SPDIF | SPDIF (Sony and Philips Digital Interconnect Format) is highly recommended for high quality | |
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| digital sound output. |