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SCART SCART is a 21-pin analog connection standard for connecting audio-visual (AV) equipment together. Also known as Euroconnector or Peritel. In Europe, SCART is the most common method of connecting audio-visual equipment together, and has become a standard connector for such devices. It is far less common elsewhere in the world. Simplicity of connections is the main advantage of the SCART system, however, it is not recommended for professional use as the physical connection is quite weak and signal leakage is too high. SCART is becoming obsolete with the introduction of new digital standards such as HDMI, which can also carry high-definition content and multichannel audio.
SECAM SECAM is an analog colour television system first used in France. SECAM can also be found in parts of Greece, Eastern Europe, Russia, Africa and a few other parts of the world. SECAM differs from the other colour systems by the way the R-Y and B-Y signals are carried. Firstly, SECAM uses frequency modulation to encode chrominance information on the sub carrier. Second, instead of transmitting the red and blue information together, it only sends one of them at a time, and uses the information about the other colour from the preceding line. Because SECAM transmits only one colour at a time, it is free of the colour artifacts present in NTSC and PAL resulting from the combined transmission of both signals.
SDI Serial Digital Interface (SDI) is a standard for digital video transmission over coaxial cable. The most common data speed is 270 megabits per second (Mbps), however speeds of up to 540 Mbps are theoretically possible. Standard 75-ohm coaxial cable is used. SDI is designed for operation over short distances (less than 300m with coaxial cable); due to high bitrates making it inappropriate for long-distance transmission.
S/PDIF Sony/Philips Digital Interconnect Format (more commonly known as Sony Philips Digital InterFace). S/PDIF is a digital interface designed to enable digital equipment to transfer digital information with minimal loss. A common use for the S/PDIF interface is to carry compressed digital audio. Connectors are either electrical coaxial cable (with RCA plug) or optical fibre (TOSLINK).
Scan Converter A scan converter is a device which changes the vertical / horizontal scan frequency of a video signal for different purposes and applications. It is generally used to convert a video signal into a format compatible with a specific type of display, for example converting a digital computer signal into a format suitable for viewing on a conventional analog television set. The application of scan conversion is wide and covers video projectors, cinema equipment, TV and video capture cards, standard and HDTV televisions, LCD monitors and many different aspects of picture and video processing.
SVGA Super Video Graphics Array or SVGA. Originally released as an extension to the VGA standard, the term SVGA normally refers to a resolution of 800 x 600 pixels. On paper, the original Super VGA was to be succeeded by Super XGA, but in practice the industry soon abandoned the attempt to provide a unique name for each higher display standard, and almost all display systems made between the late 1990s and the early 2000s are classed as Super VGA. Monitor manufacturers sometimes advertise their products as XGA or Super XGA. In practice this means little, since all Super VGA monitors manufactured since the later 1990s have been capable of at least XGA and usually considerably higher performance. SVGA uses a VGA connector as the original standard.
S-Video An analog video signal that carries video data as two separate signals: luma (luminance) and chroma (colour), to reduce the possibility of interaction. This differs from composite video, which carries picture information as a single lower-quality signal, and component video, which carries picture information as three separate higher-quality signals. S-Video was created to try and avoid the picture degradation that can occur with composite video. S-Video carries standard definition video (typically at 480i or 576i resolution), but does not carry audio on the same cable.
SDTV Standard-definition television (SDTV) is a television system that has a resolution that meets standards but not considered either enhanced-definition television (EDTV) or high-definition television (HDTV). The term is usually used in reference to digital television, in particular when broadcasting at the same (or similar) resolution as analog systems. Examples of Standard Definition video modes are 480i, 480p, 576i and 576p.
SXGA SXGA is an acronym for Super eXtended Graphics Array referring to a standard monitor resolution of 1280x1024 pixels. This display resolution is the "next step" above the XGA resolution. The 1280×1024 resolution is not the standard 4:3 aspect ratio, but 5:4.
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