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1.2 Technology
1.2.1 HD imagers
The camera head uses HD-DPM+™ CCD imagers which offer superior performance and
ultimate flexibility. Wide screen pictures in the high-definition formats 1080i and 720p are
produced at the touch of a button. Progressive frame sampling is the native imaging mode,
providing complete frame samples. The entire imager surface is used for image sampling—
there are no interline transfer channels which introduce aliasing artifacts.
The camera's native multi-format capability is realized with innovative 9.2 million pixel Frame
Transfer 2/3-inch CCD imagers. These allow vertically grouping of different numbers of pixels
on the imagers themselves. There is no need for HDTV format conversion during digital signal
processing which would lead to quality degradation.
These imagers have a high dynamic range and high linear sensitivity across all camera lens
apertures. Unique imager shuttering eliminates vertical smear, there is no measurable vertical
smear.
1.2.2 Digital processing
The advanced digital processing of the camera is based on highest performance A/D
conversion with 14 bit I/O DSP and 34-bit accurate internal processing. All major camera
functions are processed in the digital domain, including knee, gamma, detail, matrix and color
correction.
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.
The digital detail processing uses full amplitude video RGB signals via an extended dynamic
range detail circuit. Colorimetry is selected by means of a variable 6-point digital matrix or via
preset matrices. Digital gamma circuits provide a wide range of standardised gamma curves
and enable soft contrast in black scenes to be enhanced, together with hard contrast and
saturated color in bright scenes. The matrix and gamma sequence is software programmable
for precise color matching.
1.2.3 Focus assist
With HDTV, focusing is even more critical than before. The LDK 8300 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.
14
Chapter 1 - Introduction
LDK 8300 High-speed HD camera User's Guide (v4.0)
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