Xoro HSD 8410 [44/53] Glossary

Русский

GLOSSARY

5.1

5.1-multichannel encoding means, that 5 audio channels with full frequency response are

present (left, center, right, surround left, surround right) plus a subwoofer channel

(represented by the „.1”) providing deep humming frequencies you are used to know from

modern cinemas. Both Dolby Digital

(including AC3) and DTS

support 5.1-coding and –

decoding.

Aspect ratio: 4:3 and 16:9

Full Frame refers to programs developed for TV display with an aspect ratio of 4:3. Wide-

screen refers to programs developed for screens with an aspect ratio of 16:9.

If a widescreen program is displayed on a 4:3 screen, the picture will have black borders

on top and bottom.

A CD (Compact Disc) is a metal-coated plastic disc. It has a diameter of 12 cm and a

thickness of anout 1,2 mm. It was developed by Sony and Philips in 1985. The advan-

tages are digital storage of music enabling very natural sound reproduction. Beyond this,

the data is stored more compact, the handling is easy. The long lifetime of the media and

the fact that usage does not decrease quality made the CD the ideal storage media.

In the meantime, 12 different storage media have been developed from the first CD. The

mostly used are CD-DA (Compact Disc - Digital Audio) , CD-ROM (Compact Disc - Read

Only Memory), and the DVD (Digitale Versatile Disc).

One can store about 74 to 80 minutes of music on a CD (-DA). This is equal to 650 to 700

MB. Signal transmission is performed touchless with a laser beam. The CD is being read

from the middle to the outer side. The data or music is recorded in a spiral from the middle

to the outer side.

A CD has pits and lands, the distance is about 1,6 mm. The laser light created by a laser

diode passes different mirrors and prisms and then is focused by a lens to a laser beam.

This laser beam scans the data spiral of the CD. On the pits, the laser beam is reflected in

another direction and is detected by a photocell. The photocell transmits the signal to a

microprocessor which converts the digital data to an audio signal. The rest is done by the

sound system.

Component-Signal

please refer to YUV

Contrast

Means the range of luminance between the brightest and the darkest pixel which can be

displayed.

CVBS

Composite Video Interface. The video signal is transmitted via a single signal line. CVBS

should only be used, if your playback device does not offer other interfaces for connection

with you Xoro TV set, as CVBS due to technical reasons delivers worst quality of all avail-

able interfaces (please also refer to YUV, S-Video, SCART and RGB). The CVBS inter-

face can easily be identified from the yellow colour of the RCA jack.