User manual

Version 2 cmx® PDT 4740 Page 51 from 51
13. Glossary
Aspect ratio 4:3 and 16:9
Complete picture is for programs that have been developed for TV display with aspect
ratio of 4:3. Wide screen is for aspect ratio of 16:9. If you display wide screen programs
on a 4:3 monitor, you will see black bars on the bottom and top.
MPEG4
MPEG4 is a standard, mainly for the compression of audio and video digital data.
MPEG4 contains many features of MPEG1 and MPEG2 as well as of other similar
standards.
NTSC
Quite common TV standard, especially in the U.S. and Asia. 525 lines (480 visible) and
60 Hz updating rate. Explains the way how video information (brightness, colour) are
being transmitted. In Europe this standard can only be found with imported media (such
as U.S. DVDs).
PAL
European TV standard PAL mean Phase Alternation Line, 625 lines (576 visible) and 50
Hz updating rate. Explains the way how video information (brightness, colour) are being
transmitted.