EAV
EBU
EDGE ENHANCING
EDH
EDITING CONTROLLER
EGA (Enhanced Graphics Adapter)
EIA
EIA COLOR BARS
EIGHT MILLIMETER VIDEO
EIGHT-O-TWO DOT ELEVEN (802.11)
ELECTRONIC COLOR FILTER
ENCODING (COLOR)
ENG
ENHANCING (VIDEO IMAGE)
EPS
EQ
EQUALIZING PULSES
Ethernet
EUREKA
EAV
End of Active Video. A digital code used with digital component video signals, marking the end of a video line.
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EBU
European Broadcasting Union. A European organization of broadcasters which among other activities, defines recommendations and statements for the 625/50 line television system.
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EDGE ENHANCING
See Enhancing.
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EDH
Error Detecting and Handling. A system employing codes inserted in a digital video signal to detect possible errors and error rates.
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EDITING CONTROLLER
A system to control and synchronize several VTRs, disk recorders, audio tape recorders and other accessories during postproduction. An editing controller uses a dedicated computer, which is built into the controller.
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EGA (Enhanced Graphics Adapter)
An obsolete digital color standard developed by IBM™ for personal computers which was able to display 16 out of a menu of 64 colors, at resolutions of up to 640 x 350 lines. EGA was used on personal computers for desktop publishing applications, high-resolution CAD programs or other programs where high-resolution, multicolored graphics were required. Several years later this standard was replaced by VGA, Super-VGA, XGA and higher resolutions.
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EIA
Electronic Industries Association. An association of manufacturers in the electronic industry having common interests.
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EIA COLOR BARS
A test color bar signal similar to the SMPTE bars.
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EIGHT MILLIMETER VIDEO
This was a highly popular video system for recording and playback of video images on 8-mm wide magnetic tape. The advantages of 8-mm systems are flexibility, lightweight cameras, reduced storage space for tapes and the high quality of 8-mm. The system was further developed to use Y/C (s-Video) signals, named Hi-8, but the introduction of the miniDV digital cameras made those standards almost obsolete.
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EIGHT-O-TWO DOT ELEVEN (802.11)
Wireless LAN technologies, employing the GHz transmission spectrum, conforming to IEEE specifications. There are several current sub categories – 802.11a, 802.11b and 802.11g. 802.11b uses 2.4GHz and a maximum data rate of 11 Mbps. It is quite a bit slower than the 100Mbps or 1Gbps of a wired LAN system, but is still useful in small offices or for home applications. The 802.11a uses a 5 GHz signal/carrier and allows a rate of up to 54Mbps. The 802.11g uses a signal carrier similar to the 802.11b – 2.4Gbps, but allows for data rates of 54Mbps, like the “a” version. The last word on wireless LAN technology has not been said yet, and there is continuous evolution in this field. New proposed standards are 802.11e – which defines QOS (Quality Of Service) and 802.11i – which offers higher security levels. The high speed, next generation wireless LAN is called 802.11n, allowing 100-320Mbps data throughput.
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ELECTRONIC COLOR FILTER
Circuitry used in video processing which imitates the colored glass filters used in photography. Various color signals are generated and then mixed in different proportions with the video signal. This permits color changes in the video scene for color correction or special effects generation.
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ENCODING (COLOR)
A process which translates several signals of information simultaneously from an analog or digital form to a coded form, without any apparent loss of image quality. An encoder usually accepts RGB or YUV inputs from either an analog or a digital source and converts these signals to a full-colored composite or Y/C video signal. This device performs the opposite of a color decoder.
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ENG
Electronic News Gathering. A process of recording news events by using electronic cameras and recorders (non-film).
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ENHANCING (VIDEO IMAGE)
Improving a video image by boosting high frequency or other signals which are usually lost during recording. There are several types of enhancing. Luminance enhancing takes place mainly in the border areas between light and dark images. The transitions (edges) between the light and dark areas are extenuated. When there is a light area on the screen located on a dark background, the edge of the left part of the area becomes lighter and the right side becomes darker. In double-edge enhancing, all the edges surrounding the area become enhanced and the enhanced area itself appears, in effect, three-dimensional. Chrominance enhancing improves color saturation and restores normal hue.
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EPS
Encapsulated PostScript. The PostScript format and language is a trademark of Adobe Systems Inc™. It is a page description and typesetting language, widely used in typesetting and desktop publishing systems. The EPS format is a postscript description file format, easily transferable between various graphics programs.
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EQ
Equalization. A special kind of amplification, focused on a specific part of a signal’s spectrum for compensating losses and distortions usually created by long cables.
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EQUALIZING PULSES
Synchronization pulses of double frequency and of short period leading and following the vertical sync. Proper equalizing pulses are needed for picture stability on the screen, for proper vertical deflection, interlacing and for PAL switch generation. Missing or distorted equalizing pulses can cause misalignment of the video image on the screen, skewing effect, color distortion and loss.
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Ethernet
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EUREKA
A European technological developments project, which defined the HDTV standard.
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