7
Main Features
The V-440HD multiformat live switcher is capable of switching between four HD/
RGB input systems and four SD input systems for seamless switching between HD,
RGB, and SD inputs. There is no need to obtain separate converters to handle each
type of format. Although housed in a compact body, this one device is capable of
handling a wide variety of formats.
The V-440HD comprises two main sections, an “HD/RGB section,” which is used to
mix all video signals, and an “SD section,” used for managing all SD video. The
resulting mixes of composite video and S-video signals from the SD section (PGM
output) are sent to the HD/RGB section, where the HD and RGB video are mixed
and then output in either HD or RGB format.
Organization of the V-440HD
SD Video Presenter
SD VCR
PC
Projector
HD VCR
Plasuma Display
V-440HD
About HD
An abbreviation for “High Definition,” HD is a generic term for television formats that, in
comparison to conventional TV formats, provide higher resolution and an improved angle of
view, and deliver a heightened sense of presence by means of large-screen. This is also referred
to as HDTV. Although there are a number of different types of HD, which can vary depending
on the country where the technology was developed, the V-440HD utilizes the standards
recommended in BT.709-3, established by the ITU in February, 1998.
About RGB
This format, used for output of video images with computers and other digital devices, uses
video signals whereby each of three main colors, red (R), green (G), and blue (B), are handled
separately.
About SD
An abbreviation for Standard Definition, this refers to formats currently in general use (such as
480I), as opposed to HD (High Definition).
HD/RGB
Section
SD
Section
HD/RGB IN 1
HD OUT 1
HD OUT 2
RGB OUT 1
RGB OUT 2
SD IN 1
SD PGM OUT
SD
PGM
SD IN 2
SD IN 3
SD IN 4
HD/RGB IN 2
HD/RGB IN 3
HD/RGB IN 4
For a detailed diagram, refer to the
“Block Diagram” (p. 78).
