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The ultra-efficient Z-HD5000 is a member of Hitachi’s
“Green Products” Global initiative.
Hitachi’s advanced digital signal processing
Premier user of
14-bit analog-to-digital conversion
Digital signal transmission via Hybrid Fiber
Optical Cable
Superb High Definition picture reproduction
& enhancement tools
The Z-HD5000 camera system utilizes industry standard Hybrid
Fiber-optic cable connectors made of high-strength stainless steel to
insure durability and reliable performance under the most demanding
TV Studio and Field production circumstances. All command audio
and video signals to and from the camera are digitally transmitted
hence, totally immune to EMI/ RFI interference. Camera power and
cable condition supervision are also performed when using the
Hybrid Fiber-Optic Cable
(
HFOC
)
. Full Auxiliary
(
up to 4 analog or
digital, HD or SD
)
video return and individual Teleprompter facilities
are also available with the Z-HD5000 transmission system. The
maximum HFOC length with applied camera power and fully
operational facilities is 1,000 meters*
(
3,280 feet*
)
.
Unique to cameras in the Z-HD5000’ s price range are optical
power meters at the camera head
(
via engineering menu
)
and on the
front of the CU-HD5000 camera control unit. These meters indicate
the optical condition of both the receive and, transmit signals
independently to accurately depict the proximity to the “digital cliff”,
maximum cable distance or provide basic HFOC diagnostics in the
field.
*HFOC distance with applied CCU power differs depending on the
system configuration.
It is dependant on the type of lens used, viewfinder, studio Adaptor,
teleprompter and other accessories that may be connected and
thereby consuming power otherwise available for the camera head.
Hitachi cameras were the first on the market to recognize and
implement 14-bit analog-to-digital conversion. The Z-HD5000 takes
full advantage of the increased dynamic range output of the NEW
imagers by using 3
(
Red, Green, Blue channel
)
14-bit
analog-to-digital converters. These high speed ADCs are the bridge
between the serial output of the CCDs and the advanced Hitachi
processor. They assure that every nuance of the image captured
and, converted to electrical energy by the sensors is interpreted in
the digital domain resulting in faithful image reproduction.
Each essential part of the Hitachi Z-HD5000 camera system has its
own DSP processor. Different DSP ICs are used independently for
the HDTV camera head processing, the transmission system and the
Camera Control Unit
(
CCU
)
processing. The new, power-efficient
Digital Signal Processor LSI’ s are designed under the 65nm rule
with dynamic processing capability in excess of 30-bits per pixel, per
RGB channel. Hitachi’ s DSP processors are designed for and, can
adopt to progressive readout HDTV sensors. The processing
dynamic headroom of the Z-HD5000 in theory
(
14-bit
)
, allow for
signals in excess of 85dB to be faithfully reproduced. Additional
digital encoding at the camera head and CCU provides low
interference and high signal integrity for both digital and analog
outputs.
An outstanding overall signal-to-noise ratio specification of 58dB is
achieved by use of our own low-noise circuit technology. The
standard sensitivity is rated at F10 with 2000 lx.
Even at high gain, clear images are obtained with little noise.
1
2
Black stretch
The Z-HD5000’ s Black stretch function allows for better reprod-
uction of dark or underexposed areas by evenly raising the
luminance response without changing the pedestal or white clip/
knee settings. It is especially useful in high contrast image venues,
outdoors or sports production.
Luminance response tools
Ultra-Gamma
A new and useful function implemented in the Z-HD5000 is the
Ultra-Gamma function. It dramatically increases the exposure
latitude of the camera in shooting conditions where lighting and
scenery vary widely in intensity. Seven different ultra-gamma
responses are pre-programmed to suit just about every possible
adverse shooting condition.
Color reproduction excellence
Picture sharpness enhancement
Skin-tone masking
The Skin-tone masking function provides “fine Painting”
(
hue and
saturation
)
of Skin tones without affecting other colors in the scene.
This functions additional and independently from the linear and
12-vector-masking functions thereby adding an additional
color-correction
(
Triple-masking
)
Channel to the overall image color
control.
Chroma Saturation
In addition to the extensive colorimetry controls offered in the
Z-HD5000, the overall color saturation can be varied to achieve
“dramatic” or artistic “effects”.
Knee Saturation
The Knee Saturation function dynamically restores color saturation to
scene highlights above the Knee point. Color-saturated highlights
lost in overexposed scenes are now visible. This function provides
excellent results in ; for example when imaging : high-contrast,
sunny outdoor scenes, fireworks, concerts, theatre stage lighting,
and colored night scenes.
High-chroma detail
The High-chroma detail adjustments allow precise control of the
detail level in highly color-saturated portions of the picture such as
the petals of a rose or a colorful fabric.
Skin-tone Detail
The Skin-tone Detail functions allow a flesh color-based softening of
the image to achieve the impression of more youthful TV
personalities. 2 individual memories exist as well as a function to
automatically detect the hue, saturation and luminance of the
Skin-tone to be affected. This function is not limited to Skin-tones
only ; it can increase or decrease the sharpness of any pair of colors
in the image.
Hitachi Z-HD5000 Multi-application HDTV
Studio and Field Production Camera
ULTRA GAMMA
OUTPUT VIDEO
0
0
100 200 300 400 500 600
25
50
75
100
125
150
INPUT SIGNAL
Standard
1
(
90%
)
2
(
85%
)
3
(
80%
)
4
(
75%
)
5
(
70%
)
6
(
65%
)
7
(
50%
)