Epson EMP-810UG, ELP-811, ELP-600, ELP-800UG, ELP-820, ELP-810UG, EMP-811, EMP-800UG manual Glossary, 102

Glossary

Interlaced	A method of image scanning whereby the signal bandwidth used is approximately half
scanning	that required for sequential scanning when images with the same still picture
	resolution are broadcast.
Refresh Rate	The light-emitting element of a display maintains the same luminosity and color for an
	extremely short time. Because of this, the image must be scanned many times per
	second in order to refresh the light emitting element. The number of refresh operations
	per second is called the "refresh rate", and is expressed in hertz (Hz).
Remote	Connects an optional remote control receiver.
port

S-Video images

A video signal which has the luminance component and color component separated in order to provide better image quality.

It refers to images which consist of two independent signals: Y (luminance signal), and C (color signal).

SDTV	An abbreviation for Standard Definition Television. It refers to standard television
	systems which do not satisfy the conditions for High-Definition Television.
Security lock	A device consisting of a protector case with a hole in it that a commercially-available
	theft-prevention cable can be passed through in order to secure the device to a table or
	pillar. This projector is compatible with the Microsaver Security System manufactured
	by Kensington.
Source prompt	The screen display showing the type of signal being input.
sRGB	An international standard for color intervals that was formulated so that colors which
	are reproduced by video equipment can be handled easily by computer operating
	systems (OS) and the Internet.
SVGA	A type of video signal with a resolution of 800 (horizontal) x 600 (vertical) dots which
	is used by IBM PC/AT-compatible computers (DOS/V computers).
SXGA	A type of video signal with a resolution of 1,280 (horizontal) x 1,024 (vertical) dots
	which is used by IBM PC/AT-compatible computers (DOS/V computers).
Synchronization	The signals output from computers have a specific frequency. If the projector
(Sync.)	frequency does not match this frequency, the resulting images will not be of a good
	quality. The process of matching the phases of these signals (the relative position of
	the crests and troughs in the signal) is called "synchronization". If the signals are not
	synchronized, problems such as flickering, blurriness and horizontal interference can
	occur.
Tracking	The signals output from computers have a specific frequency. If the projector
	frequency does not match this frequency, the resulting images will not be of a good
	quality. The process of matching the frequency of these signals (the number of crests
	in the signal) is called “tracking”. If tracking is not carried out correctly, wide vertical
	stripes will appear in the projected images.
USB	An abbreviation for Universal Serial Bus. USB is an interface for connecting personal
	computers to peripheral devices which only support relatively low data transmission
	speeds.
UXGA	A type of video signal with a resolution of 1,600 (horizontal) x 1,200 (vertical) dots
	which is used by IBM PC/AT-compatible computers (DOS/V computers).
VGA	A type of video signal with a resolution of 640 (horizontal) x 480 (vertical) dots which
	is used by IBM PC/AT-compatible computers (DOS/V computers).
XGA	A type of video signal with a resolution of 1,024 (horizontal) x 768 (vertical) dots
	which is used by IBM PC/AT-compatible computers (DOS/V computers).
YCbCr	The carrier signal which is contained in the color bar signal used in modern TV
	transmissions (NTSC format). The name comes from the Y (luminance) signal and the
	CbCr (chroma [color]) signals.
YPbPr	The carrier signal which is contained in the color bar signal used in high-definition TV
	(HDTV) transmissions. The name comes from the Y (luminance) signal and the PbPr
	(color difference) signals.

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