HK-355/HK-355P

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		Ikegami's new HK-355 CCD Studio / Field Camera takes full advantage of CCD technology. Incorporating state-of-the-art circuit design, the HK-355 Camera System will find widespread use in both studio and field applications. The HK-355 performance characteristics are comparable to 30mm tube cameras in teJ'JJls of image quality and functions. A variety of new features, such as a 6-order optical LPF and an optical axis alignment mechanism are incorporated so that CCD features are utilized to maximum advantage. These features and video circuit technology that derive all a 450,000 pixel CCD has to offer work together to ensure a high level of performance: 800 lines of horizontal resolution; an S/N ratio of 62dB or more, and a registration error of 0.02%, or less. In addition, the new CCD driving system, and the 3-DTL enhancer incorporated in the HK-355 give improved vertical resolution and dramatically reduce moire noise patterns. This camera system accommodates various types of cables, such as triaxal, multiconductor and fiber optics, and oHers a host of salient features that permit flexible and versatile operations. The HK-355 CCD meets all the requirements of a studio / field camera.

Features

Well balanced camera head
The camera head, made of aluminium, provides proper balance and increased maneuverability.
High resolution and high S/N ratio
Using 213-inch FIT CCD's with 450,000 pixels, the HK-355 features a horizontal resolution of 800 TV lines (V ch) , a vertical resolution of 400 TV lines, and a high SIN ratio of 62dB.

HK-355P
with TA-355 Triax Adapter

Easy maintenance
The HK-355 saves camera adjustment and maintenance time by eliminating the need for registration, geometry, and other time-consuming adjustments. The camera head also employs mother board construction within modules.
Newly developed LPF
A high-sensitivity prism is employed. A newly developed six-directional optical LPF is incorporated to suppress false signals inherent in the CCD sampling process. The resolution rivals 30mm tube cameras.
3-DTL
Three-channel vertical detail correction is incorporated and provides for color objects lacking the green component. A complete MIX DTL is also provided to suppress the DTL- induced moire.
Optical axis adjustment
The HK-355 has a newly-developed feature that allows adjustment of the optical axis of the prism block, so that the center of the lens and the CCD are correctly aligned. This function gives full correction of optical axis, especially when a lens with high magnification is used .
Electronic shutter
The continuously variable electronic shutter is provided for the range of 1/60-5000 sec.
Highlight compression
Highlight compression allows the camera to handle high scene contrasts.
Linear matrix
Incorporating a linear matrix circuit, the HK-355 has ideal color analysis and obtains images with superior color fidelity from dark to highlight areas of the picture.
Color corrector
Since the hue nad saturation can be controlled separately for each of the R, G, B, C, M, and y color vectors, tones can be finely tuned in greater detail.
Auto color corrector
When multiple cameras are to be use<4; the color reproduction data stored in one preadjusted camera can be used as a reference to provide automatic color matching for other camera heads in synchronized operation. This facilitates the previously timeconsuming process of color matching.
Auto level setup
Auto level setup functions have been incorporated. With chip technology, the registration and geometry setup func- tions normally associated with tube-type cameras have been eliminated. The camera head can be used alone as a self-contained unit. Camera cables -triax, multicore, and fiber optic, can be changed simply by changing modules. Various control panels such as, OCP, CCP, and MCP can be connected to the base station or camera head to perform versatile operations for each particular application . Since the HK-355 system configuration is the same as the HK-323, the base station and other peripheral equipment are common to both camera systems.
The HK-355P portable camera, may be connected to the same type of base station, but may also be used as a stand- alone or with an on board VTR. Furthermore this camera can be used with full build-up kit for long focal length lens operation. (System Diagram)

Self-diagnosis system
In the event of camera head or base station trouble the self- diagnosis system alerts the operator, prompting him to take corrective action.
Check Point Display Contents
Camera Head Head Power
Head Video (R.G.B)
Head Battery
Head/Base Station Command
Camera Cable Cable
Base Station Base Station Video IN (R.G.B)
Base Station ENC Video OUT
Base Station/Control Panel Command
Base Station Video OUT (R.G.B)
Auto Phase Control
Base Station to Head Power