Panasonic BT-LH2550 Brochure & Specs page 5

High-Quality Picture Ideal for Production Applications
Faithful Color Reproduction Meets Broadcasting Needs
chromatic gamut
y
0.8
EBU
0.6
0.4
0.2
BT-LH1760
0
0.2 0.4 0.6 0.8
I/P Conversion Circuit for Motion Response
A circuit delay time (not including panel delay) of approximately
5 msec* is achieved by incorporating an I/P converter circuit that
1
converts SD and HD interlace signals with high precision and
generates a progressive signal without causing field-length delay.
Minimizing the delay between the input signal and monitor output
enables the user to confirm footage without any incongruity.
*1: Differs slightly depending on the signal format.
Diagonal Line Compensation
Gamma Compensation for Each Monitor
In order to make the LCD monitor suitable for professional
broadcasting applications, compensation is conducted for each
monitor in 256 discrete RGB steps, rated gamma properties
(g = 2.2) are reproduced, and gradation suitable for broadcasting is
achieved. Color temperature of 9300K/6500K/5600K; 3000K to
9300K can be selected with the variable setting.
Panel Gamma Characteristics
Output
250
Yr (actual panel measurement value)
Yg (actual panel measurement value)
Yb (actual panel measurement value)
200
Yr (target value)
Yg (target value)
Yb (target value)
100
Gamma curve
--> power of 2.2
50
0
0 50 100 150 200
[2550] [1760] [1710]
The BT-LH2550/BT-LH1760/
BT-LH1710 features a new
image processing engine.
By using a three-dimensional
LUT (Look Up Table) for each
RGB color and applying
precise 10-bit image
processing, it achieves
faithful color reproduction
from low to high brightness
levels in all video formats.
x
* SMPTE-C in North America.
[2550] [1760] [1710] [80WU]
[2550] [1760] [1710] [80WU]
Jagged noise on diagonal
lines in moving images is a
common problem. These LCD
monitors solve this by
detecting correlations in the
diagonal direction, resulting in
smooth, precise reproduction
of moving images.
[2550] [1760] [1710]
Varying errors
in each panel
Errors Corrected
250 300 Input
Double-Speed Drive for Blur-Less Moving Images
Moving images without any afterimage are achieved by driving at a
speed (120 Hz/100 Hz) that is twice the panel speed and inserting
a black frame of a certain level between frames. Unlike frame
creation methods, this system minimizes afterimages while
displaying images faithful to the input signal. This high-
performance, high-speed image display function is ideal for
broadcast applications.
1/60 sec
Input Image
(60Hz)
1/120 sec Inserting Black
Moving Image
(120Hz)
High-Speed Response
The biggest concern when receiving a video feed is response time
in the intermediate gradations. The BT-LH1760 uses double-speed
drive to achieve superb response over the entire image, enabling
the vivid image display without blurring. The BT-LH2550 and
BT-LH1710 feature an overdrive circuit to improve response in
intermediate gradations.
Wide Viewing Angle
By using a high-intensity, high-contrast LCD panel, wide viewing
angle is achieved in all models. The BT-LH2550 has a 178°, and the
BT-LH1760/LH1710 has a 176° horizontal and vertical viewing
angle. The BT-LH900A also has a 170° horizontal and vertical
viewing angle. Easy viewing is ensured by reducing changes in
color due to the viewing angle.
178°
HD/SD Multi-Format
Compatible with most HD and SD formats, Panasonic LCD
monitors are ideal for a wide range of applications in locations
around the world.
[1760]
1/60 sec
1/120 sec Inserting Black
[2550] [1760] [1710]
[2550] [1760] [1710] [900A
178°
[2550] [1760] [1710] [900A] [80WU]
]