RCA LDK 200 - Manual (Page 6)

1-2 Operator's Manual LDK 200 - Multi-role Digital Camera Head Introduction
Technology
The LDK 200 camera is a multi-role digital camera
head using 2/3-inch CCD sensors. This flexible camera
head is equally at home in the studio or out on location
in an OB environment.
Frame Transfer DPM sensor
The Frame Transfer CCD DPM sensor offers superior
performance and can handle highlights of up to 600%.
The 2/3-inch sensors have a high dynamic range and
high linear sensitivity over all camera lens apertures.
Frame Transfer technology ensures that there is no lag
nor smear. The Frame Transfer DPM sensor uses
Dynamic Pixel Management which allows the format
of the sensors to be switched between 4:3 and 16:9
aspect ratios at the touch of a switch without loss of
horizontal or vertical resolution. The 1000 pixels per
line in both formats ensures that there is no loss in the
horizontal viewing angle but also ensures high resolution
in the red, green and blue channels.
Digital Processing
The advanced digital processing of the camera is
based on 12-bit A/D converters and more than 20-bit
internal processing. Two DSPs combine all major
camera functions in the digital domain, including knee,
gamma, contour, matrix and colour correction.
The intelligent continuous automatics facility provides
automatic control of black levels and black shading.
Each sensor provides black reference signals that are
used to monitor temperature changes. This means
that continuous automatic correction is applied without
operator intervention.
The digital contour processing uses full amplitude
video RGB signals via an extended dynamic range
contour 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
colour in bright scenes. The matrix and gamma
sequence is software programmable for precise colour
matching.
Film-like characteristics
The pivoting knee circuit adapts both the knee point
and the compression ratio according to the highlight
content of the picture to emulate the softly limiting S-
shaped transfer characteristics of film. Digital True
Colour Knee circuitry maintains the correct hue for
compressed highlights, reproducing colours faithfully,
even overexposed skin tones.
Digital contrast circuitry provides a black stretch
function for more detail in black areas and a black
press function for improving the contrast impression
by simulating the S-curve of film.