RGBLink DXP D0108 User Manual - Manual (Page 17)

1. Brief Introduction
Terms and Definitions
DXP D0108 User Manual 17
speeds starting at 10Mbps. For LAN interconnectivity, Ethernet
is physical link and data link protocol reflecting the two lowest
layers of the OSI Reference Model.
 “Frame”: In interlaced video, a frame is one complete picture.
A video frame is made up of two fields, or two sets of interlaced
lines. In a film, a frame is one still picture of a series that
makes up a motion picture.
 “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.
 “HDMI” - High – Definition Multimedia Interface: An
interface used primarily in consumer electronics for the
transmission of uncompressed high definition video, up to 8
channels of audio, and control signals, over a single cable.
HDMI is the de facto standard for HDTV displays, Blu-ray Disc
players, and other HDTV electronics. Introduced in 2003, the
HDMI specification has gone through several revisions.
 “HDSDI”: The high-definition version of SDI specified in
SMPTE-292M. This signal standard transmits audio and video
with 10 bit depth and 4:2:2 color quantization over a single
coaxial cable with a data rate of 1.485 Gbit/second. Multiple
video resolutions exist including progressive 1280x720 and
interlaced 1920x1080 resolutions. Up to 32 audio signals are
carried in the ancillary data.
 “JPEG” (Joint photographic Expects Group): Commonly
used method of lost compression for photographic images
using a discreet cosine transfer function. The degree of
compression can be adjusted, allowing a selectable tradeoff
between storage size and image quality. JPEG typically
achieves 10:1 compression with little perceptible loss in image
quality. Produces blocking artifacts.
 “MPEG”: Motion Picture Expect Group. A standard committee
under the auspices of the International Standards
Organization working on algorithm standards that allow digital
compression, storage and transmission of moving image
information such as motion video, CD-quality audio, and
control data at CD-ROM bandwidth. The MPEG algorithm
provides inter-frame compression of video images and can
have an effective compression rate of 100:1 to 200:1.
 “NTSC”: The color video standard used in North America and
some other parts of the world created by the National
Television Standards Committee in the 1950s. A color signal
must be compatible with black-and-white TV sets. NTSC
utilizes an interlaced video signals, 525 lines of resolution with
a refresh rate of 60 fields per second (60 Hz). Each frame is