4K Ultra HD NDI CAMERA
User Manual
49
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Gamma:
The light output of a CRT is not linear with respect to the voltage input. The difference between
what you should have and what is actually output is known as gamma.
●
Frame:
In interlaced video, a frame is one complete image.A video frame is made up of two fields, or two sets
of interlaced lines. In a film, a frame is one still image of a series that makes up a motion image.
●
Genlock:
Allows synchronisation of otherwise video devices. A signal generator provides a signal pulses which
connected devices can reference. Also see Black Burst and Color Burst.
●
Blackburst:
The video waveform without the video elements.It includes the vertical sync, horizontal sync,
and the Chroma burst information. Blackburst is used to synchronize video equipment to align the video output.
●
ColourBurst:
In colour TV systems, a burst of subcarrier frequency located on the back part of the composite
video signal. This serves as a colour synchronizing signal to establish a frequency and phase reference for the Chroma
signal. Colour burst is 3.58 MHz for NTSC and 4.43 MHz for PAL.
●
Colour Bars
：
A standard test pattern of several basic colours (white, yellow, cyan, green, magenta, red, blue, and
black) as a reference for system alignment and testing. In NTSC video, the most commonly used colour bars are the
SMPTE standard colour bars. In PAL video, the most commonly used colour bars are
eight full field bars. On
computer monitors the most commonly used colour bars are two rows of reversed colour bars
●
Seamless Switching:
A feature found on many video switchers. This feature causes the switcher to wait until the
vertical interval to switch. This avoids a glitch (temporary scrambling) which often is seen when switching between
sources.
●Scaling:
A conversion of a video or computer graphic signal from a starting resolution to a new resolution. Scaling
from one resolution to another is typically done to optimize the signal for input to an image processor, transmission
path or to improve its quality when presented on a particular display.
●PIP:
Picture-In-Picture. A small image within a larger image created by scaling down one of image to make it
smaller. Other forms of PIP displays include Picture-By-Picture (PBP) and Picture- With-Picture (PWP), which are
commonly used with 16:9 aspect display devices. PBP and PWP image formats require a separate scaler for each video
window .
●HDR:
is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic
range of luminosity than what is possible with standard digital imaging or photographic techniques. The aim is to
present a similar range of luminance to that experienced through the human visual system.
●UHD:
Standing for Ultra High Definition and comprising 4Kand8Ktelevision standardswith a16:9 ratio, UHD
follows the 2K HDTV standard. A UHD 4K displayhasaphysicalresolution of3840x2160 which is four times the area
and twice both the widthandheightofaHDTV/FullHD(1920x1080) video signal.
●
EDID:
Extended Display Identification Data. EDID is a data structure used to communicate video display
information, including native resolution and vertical interval refresh rate requirements, to a source device. The source
device will then output the provided EDID data, ensuring proper video image quality.
6.6 Revision History
Summary of Contents for RGB-RD-UM-4K
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Page 14: ...4K Ultra HD NDI CAMERA User Manual 13 2 Ceiling Mounting...
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