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The 8 mm video system employs a metal powder tape.
This means the video cassette recorder is capabie of
recording a large amount of information and enhances
picture quality. The Hi8 video system has been
developed, taking advantage of the 8 mm video system.
The main characteristics of the Hi8 are as follows:
"Super High Quality Picture :
The information capacity is a key element for picture
improvement. It can be increased by shifting up to the
FM carrier frequency range. In the Hi8 video system, the
FM carrier frequency range of the luminance signal is
shifted up to 5.7—-7.7 MHz This is higher than the
4.25.4 MHz range of the standard 8 mm video system.
Thanks to this, the horizontal resolution is improved to
more than 400 lines.
Useé of High-Grade Tape Corresponding
to. the Hi8 Video System
:
Metal evaporated tape is ideal for video meena because
it has large magnetic energy that allows for high-density
recording. The Hi8 video cassette recorder uses such
high-grade tape for the Hi8 video system, covering a
wide frequency range, to achieve a high-quality video
signal for recording/playback.
Frequency allocation of the standard video system
Frequency deviation
Luminance signal
——
Gain
'Chrominance. sng) inputiOutput
-Connectors
=
Conventionaily, video ans
exchange the
composite video signal containing the luminance (Y)
signal and the chrominance (C) signal mixed. The
composite video signal is Ilable to produce interference
resulting in picture quality loss. On the contrary, an S
VIDEO connector transmits or receives the video signal
separated into the luminance signal and the chrominance
signal. Flickers and color blur in the picture are
minimized with the separated video signal, and
sharpness is enhanced to such an extent that hair and
fine stripes are clearly visible. The S VIDEO connector
also assures an excellent editing quality with minimum
picture quality loss.
is
og
a
Br
6G
8
743KHzZ
4.2MHz
5.4MHz
MHz
Frequency allocation of the Hi8 video system
Frequency deviation
Luminance signal
———>
Gain
743kHz
5.7MHz |
56
7.7MHz
MHz
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