Technical data

DVS-5 Module
Re:source
12
Multimedia glossary
Bit
Bit is the abbreviation for Binary
digit. A Bit can only have the value 1
(on or true) or 0 (off or false). 8 bits
make up a byte and can represent 2
8
= 256 values. 10 bit therefore, can
represent 2
10
= 1024 values.
Chrominance
The color information of a video
signal, including hue and saturation,
but not brightness (luminance).
Neutral colors (grey tones) don’t
have any chrominance. All colors
however, are made up of a
combination of luminance and
chrominance.
DA converter
This is an abbreviation for a digital to
analogue converter, also known as a
DAC. This is an electronic device
that is used to convert digital signals
into analogue signals.
DVI
Digital Visual Interface. The picture
signal is no longer transmitted as
analogue but digitally. As HDTV can
only transmit digitally, you have to
have a DVI or HDMI connection.
You also profit from a digital transfer
even when connecting a PC.
HDCP
Modern digital video interfaces (DVI,
HDMI) are equipped with a copy
protection system “High Bandwidth
Digital Content Protection“.
The correct function of this interface
is only guaranteed if the HDCP
process is used at both of the
devices connected by DVI / HDMI
(DVD, HDTV receiver/decoder, Flat
screen / Beamer).
HDMI
In comparison to the DVI, the High
Definition Multimedia Interface offers
the advantage of audio transmission
with a 19-pin miniature plug. HDMI
does not have any data
compression. All picture formats,
including HDTV 1080p, as well as up
to 8 audio channels are transferred
uncompressed. At the same time,
HDMI is downwardly compatible with
DVI. This means that a DVI output
can be connected with an HDMI
input using a suitable cable.
HDTV
High Definition TV offers an
enhanced picture resolution. The
possibilities are 720 or 1080 lines.
The maximum resolution is 1080i
(interlaced 1920 x 1080 pixels). In
comparison to the conventional,
analogue PAL process, 1080i has
about a 5-fold higher resolution.
HDTV is a purely 16:9 picture
format. 4:3 formats are shown with
black margins, top and bottom.
Luminance
Luminance is the brightness
component of a color, which is
independent of the color itself. It is
possible to display the luminance
without chrominance (color
components). It is however not
possible to show a color without
luminance.