Bedienungsanleitung Epson emp tw500 (Seite 55 von 60) (Englisch)

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Appendix

TW500_English

Glossary

The following is an explanation of some of the terms used in this guide which may be unfamiliar or

which were not explained in the manual itself. Further information can be obtained by referring to other

commercially-available publications.

Component video

Video signals which have the video brightness signals and

color signals separated, in order to provide better image

quality.

In high-definition TV (HDTV), it refers to images which

consist of three independent signals: Y (luminance signal),

and Pb and Pr (color difference signals).

Composite video

Video signals which have the video brightness signals and

color signals mixed together. The type of signals

commonly used by household video equipment (NTSC

PAL

and SECAM formats).

Video signals which consist of a carrier signal Y

(luminance signal) within the color bar signal, and a

chroma or color signal (CbCr).

Cool-down

This is the process by which the projector's lamp is cooled

down after it has become hot through use. It is carried out

automatically when the [Power] button on either the

remote control or the projector's control panel has been

pressed to the projector off. Do not disconnect the power

cable while cool-down is in progress, otherwise the cool-

down process will not work properly. If the cool-down

period is not allowed to finish normally, the projector's

lamp and internal components will remain at high

temperatures, and this may shorten the useful life of the

lamp or cause problems with the operation of the projector.

The cool-down period lasts for about 30 seconds. The

actual time will vary depending on the external air

temperature.

DHCP

Abbreviation for Dynamic Host Configuration protocol,

which is a protocol for automatically assigning an IP

address

for devices that are connected to a network.

Gateway

A server (router) that is used for communication over a

network (subnet) that is divided up using subnet masks

HDMI

An abbreviation for High Definition Multimedia Interface,

and refers to a standard for digital transmission of high-

definition images and multi-channel audio signals.

HDMI is a standard that is targeted towards household

digital equipment and computers that allows digital signals

to be transmitted in their original high quality without

compression, and it also includes a digital signal

encryption function.

HDTV

An abbreviation for High-Definition Television. It refers to

high-definition systems which satisfy the following

conditions.

• Vertical resolution of 750p or 1125i or greater

(p = progressive, i = interlaced

)

• Screen aspect of 16:9

• Dolby Digital audio reception and playback (or output)

Interlace

A method of image scanning whereby the signal

bandwidth used is approximately half that required for

sequential scanning when images with the same still

picture resolution are broadcast.

IP address

A series of numbers that identifies a device that is

connected to a network.

MAC address

Abbreviation for Media Access Control address. A MAC

address is a unique ID number that is assigned to each

network adapter. All network adapters are assigned this

unique address, and these are used as the basis for

communication between each network adapter.

NTSC

An abbreviation for National Television Standards

Committee, and a format for ground-based analogue

colour television broadcasts. This format is used in Japan,

North America and Central and South America.

PAL

An abbreviation for Phase Alternation by Line, and a

format for ground-based analogue colour television

broadcasts. This format is used in Western European

countries except France, and also in Asian countries such

as China and in Africa.

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).

S-Video

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 HDTV

SECAM

An abbreviation for Sequential Couleur A Memoire, and a

format for ground-based analogue colour television

broadcasts. This format is used in France, Eastern Europe

and the former Soviet Union, the Middle East and Africa.

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.

TW500-E.book Page 53 Wednesday, June 30, 2004 9:35 AM

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