Technology; Cmos Imagers; Digital Processing; Focus Assist - GRASS VALLEY LDK 3000+ User Manual

High-definition camera head

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1.2 Technology

The camera's multi-format capability is realized with innovative 2/3-inch, 2.4 million pixel CMOS

imagers specially developed for broadcast applications. Many unique features have been

designed into these imagers such as DDS—Double Digital Sampling—and dual integrated A/D

converters which create high-quality, razor-sharp pictures. The multi-format HD acquisition

system supports both 1080i50/59.94 and 720p50/59.94 formats.

The advanced digital processing of the camera is based on on-chip A/D converters and 34-bit

accurate internal processing. All major camera functions are processed in the digital domain,

including gamma, knee, detail and advanced selectable color matrix. A full digital noise

reduction system is implemented.

The intelligent continuous automatics function provides automatic control of black levels and

black shading. Each imager provides black reference signals that are used to monitor

temperature changes. This means that continuous automatic correction is applied without

operator intervention.

To make images look their best, the LDK 3000+ contains powerful colorimetry and color-

matching capabilities. It also contains two independent skin detail circuits. These circuits allow

you to select any two color values and adjust detail processing in those areas, thus allowing

improvement in the appearance of facial tones or of any selected tone.

With HDTV, focusing is even more critical than before. The LDK 3000+ has special patented

focusing aids. A unique viewfinder zoom function enlarges the viewfinder image instantly with

a simple press-button action, thus providing improved means for focusing.

Additionally, a patented crawler circuitry adds motion in the viewfinder to objects in sharp

focus.

The LDK 3000+ is equipped with CLASS, an algorithm designed to cancel out chromatic

aberration (shifts in color registration detectable at the edges of a lens). CLASS works in

conjunction with lens data, using the industry standard lens interface protocols. Besides the

cancelation of chromatic aberration effects, CLASS achieves a 40% increase in overall image

sharpness in the outer regions of the image.

Chapter 1 - Introduction

LDK 3000+ High-Definition Camera Head User's Guide (v1.0)

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