Silvercrest KH 6779 Operating Instructions Manual page 70

Progressive scan
In the normal way TV devices and Video projectors are controlled with so called
"Half images". Thereby clearly visible line structures develop. Contrary to this,
Progressive Scan denotes the output of full images (with this DVD player, at
the output YPbPr) Progressive Scan signals can only be processed by play-
back devices equipped for this purpose (in particular large screen televisions
and projectors). The image quality as opposed to traditional image signals is
considerably higher.
YUV (component video out)
YUV indicates the component signal, which with this device is available at the
output YPbPr in the form of so called "Half images"; as a rule this is the best
signal for the control of large screen televisions and projectors, which can not
process Progressive Scan signals. As with the RGB image transmission, YUV
is comprised of three separated image signals:
• the brightness signal "Y" and
• the two colour difference signals "Pb/Cb" and "Pr/Cr"
Half images (Interlace)/Full images (Progressive Scan)
A standard television image is comprised of 576 visible lines; at first all odd
and then all even image lines are displayed alternatively, thus each displays
a half image. Thereby only 25 full images (50 Half images) can be displayed
per second. This technique is designated as "Interlace" format.
Contrary to this with the so called progressive or "Progressive Scan" format
all image lines are displayed every time, that is to say 60 full images per
second are displayed. Thereby increasing the total quality of the images, still
images and text for example appear sharper.
Decoder
The sound on DVDs with home theatre sound is saved on the DVD in encrypted
(encoded) form. Different encryption formats exist for several purposes, for
example AC-3 for the playback of Dolby Digital Surround Sound.
In order to playback encrypted sound, the playback device (i.e. the DVD
player) and/or the audio component connected to it (for example Surround
system) must be equipped with a so called decoder, which converts the en-
crypted signal back into music and/or sound.
The Silvercrest KH 6779 DVD-Player is equipped with an AC-3 Decoder
(for Dolby Digital 5.1 Surround sound signal).
Dolby Surround
Dolby Surround is an analogue sound format, by which the two channels of
a stereo sound signal are used in order to accommodate room sound infor-
mation for further channels. Dolby Surround decoders convert the signals
back into sound or music and send the audio to two additional speakers that
are situated behind the listener.
Dolby Prologic
In comparison to Dolby Surround sound format, with Dolby Prologic an addi-
tional channel in the stereo signal is used; this is the so called "Centre" channel.
The corresponding centre loudspeaker is to be situated in the middle between the
stereo loudspeakers. The deepest sounds are fed to a bass loudspeaker, the
so called "Subwoofer". The subwoofer can be placed in any desired location
in the room; the logic for this is that the bass sounds that the subwoofer puts
out can scarcely be localized exactely by the human ear
Dolby Digital (5.1)
Dolby Digital, also designated as AC3, is a digital sound format, by which up
to six seperate audio channels can be transported. With most of the current
DVDs, the sound is stored in the so called "Dolby Digital 5.1" format; the "5"
in the name "5.1" stands for the three front and two rear surround sound
channels, the "1" stands for the subwoofer channel.
DTS
DTS is the abbreviation for "Digital Theatre System" and denotes one of the
most common surround sound formats for DVDs. As with Dolby Digital 5.1,
DTS uses three front and two rear surround sound channels as well as a bass
sound channel.
What are PAL, NTSC and SECAM?
PAL
PAL is the abbreviation for "Phase Alternation Line". PAL is the mid and west
Europe (Exception: France, see the heading "SECAM") customary and most
wide spread colour television standard.
NTSC
NTSC is the abbreviation for "National Television System Committee". NTSC
is a colour television standard that is primarily used in the USA and Japan.
SECAM
SECAM is the abbreviation for the french "système en couleur avec mémoire".
SECAM is the customary colour television norm in France and many east
European countries and at present still the most widely spread system in those
countries.
Audio CDs
Audio CDs contain exclusively audio data; they are also available in 8 cm
and 12 cm (Diameter) formats. The playback duration for the audio data
stored on them amounts to 20 minutes (8 cm format) and/or 74 minutes
(12 cm format). Audio data is stored on audio CDs in CDA format.
MP3
MP3 denotes a process and/or format developed by the Fraunhofer Institute
for the compression of audio data. In the MP3 format compressed music pieces
are only a fraction of their original size, which, for example, on CD-Rs/CD-RWs
allows for storage of a considerably greater volume of music than on com-
mercially available audio CDs, on which audio data is stored in the CDA
format.
WMA
WMA ("Windows® Media Audio") is a data format developed by Microsoft®
for audio data.
JPEG
JPEG ("Joint Photographics Expert Group") denotes a wide spread graphic
format, developed by the organization with the same name, with which image
data of the colour and grey scales are compressed.
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