Datasheet

Advanced technologies to ensure
stable high picture quality
From dust-clogged heads to the use of poor quality tape, the
transport mechanism is potentially vulnerable to a number of
factors that can produce picture noise. Consequently, JVC
developed the following two technologies to minimize the effects
of any such problems.
Auto error correction system
Typically, when a recorded tape is played back, the signal can
be read correctly because the player’s clock phase is set at the
factory, and the error rate is kept to a minimum. However, with
a low-quality tape, the playback image will be marred by block
noise that is produced because the minimum error rate value
and the clock phase are both adversely affected. As a result,
there is either no minimum value or the error rate is abnormal.
To compensate for this, JVC has developed an auto error
correction system that operates on a frame-by-frame basis to
ensure accurate error compensation under all conditions. After
optimally calibrating the
waveform with a pre-filter
circuit, the VCO (voltage
control oscillator) setup value
is changed so that the reading
of the clock phase is shifted to
the position where the error
rate is lowest. The result is
accurate, consistent suppression of block noise and reliable,
professional-standard performance at all times.
Sweeper heads
During recording and playback,
to reduce the block noise which
is caused by dust adhering to
the heads, our DV camcorder
and recorders incorporate an advanced
drum assembly with specially designed
“sweeper” heads. These dummy heads sweep off any magnetic
material dropped by the tape or any dust that may have entered
from outside the unit.
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Sweeper head
Sweeper head
Record/play
head
Record/play
head
Upper drum
NTSC model shown with
the optional DR-DV5000.
(Before correction)
With block noise
(After correction)
Without block noise
The latest addition to JVC’s Professional DV lineup, the new GY-DV5100 3-CCD camcorder
offers enhanced image quality, improved operability, and greater convenience. In addition to
the built-in Standard DV/Mini DV-compatible mechanism common to all our Professional DV
models, the GY-DV5100 camcorder boasts an all-new 12-bit ADC and a 24-bit camera DSP
with user selectable detail frequency positions for optimized video performance. Back in the
editing room, you can transfer the GY-DV5100’s quality images to the BR-DV6000 Professional
DV editing recorder for fast, accurate tape-to-tape editing. Equipped with a comprehensive set
of interfaces, this superb editor can work seamlessly with most video formats. Complete your
DV solution with the compact, stylish BR-DV3000. Ideal for archiving and basic NLE, this simple,
easy-to-use unit can be installed horizontally or in the space-saving vertical position.
Together, these three models provide a complete Professional DV solution that’s ideal for
broadcasters, cable or high end production, yet they are within easy financial reach of any
professional.
GYDV5000/6000/3000_C 05.1.18 10:55 AM ページ 5