Hitachi SK-HD1000 Brochure & Specs page 3

Hitachi's advanced digital signal processing
Each essential part of the Hitachi SK-HD1000 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 SK-HD1000 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 60dB 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.
Setup memory and adjustment transfer card
A small plug-in setup card ( SD card ) stores the user setup and Scene
File information. The adjustment data can then be recalled and used for
future scenes and productions thereby assuring the exact video "look"
and characteristics as the original Scene File and adjustment settings.
A single cameras' setup data can also be transferred to quickly adjust a
group of cameras to be used
in a production.
Access to setup card data and
transfer is also available from
the SU-1000 master setup panel.
Superb High Definition picture reproduction
& enhancement tools
Luminance response tools
Selectable gamma tables
In addition to normal gamma point and balance adjustments, the
SK-HD1000 offers a multi-point gamma table that provides the user
with exposure control over just the darkest points in the image. It
enables adjustment of the initial gamma gain to optimize the repro-
duction of dark scene components. Hitachi' s DSPs assure that no
additional noise components are introduced in the image even with
the most aggressive Gamma Table settings. Additionally, this function
does not change any of the other parameters of the video signal thus
maintaining overall exposure, detail, color reproduction and composition.
Multi-Format Digital HDTV Production Camera
Multi-Format Digital HDTV Production Camera
Digital signal transmission via Hybrid Fiber
Optical Cable
The SK-HD1000 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 SK-
HD1000 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 SK-HD1000' s price range are optical power
meters at the camera head ( via engineering menu ) and on the front of the
CU-HD1000 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.
Black stretch
The SK-HD1000' 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.
Linear and auto-knee
Like the peak video level control function of the white clip; the linear
knee function is made up of the actual knee ( level compression ) point
and its slope which improve overexposed portions of the picture by
compressing the video past a certain point. These points are user
adjustable.
The auto knee provides the perception of a wider dynamic range by
dynamically compressing ( varying knee and slope ) the video level in
accordance to the strength of its over-exposure.
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