CM5000 User Manual
UM-CM5000-FW3.5.2.0-REV0.0
2019-07-08
www.ateme.com
Page 148
I.4. Glossary
Table I.23. Glossary
3:2 pull-
down
Process of converting 24 frame/s material to 29.97 frame/s.
422/420
Sampling method. In 420 sampling, chrominance components have half the horizontal and vertical
resolution of luminance component. In 422 sampling, chrominance components have half the hori-
zontal resolution of luminance component
ASI
Asynchronous Serial Interface
AVC
Adavanced Video Coding
BISS
Basic Interoperable Scrambling System. Non-proprietary encryption from EBU (Tech3290).
CABAC
Context-based Adaptive Binary Arithmetic Coding
CAVLC
Context Adaptive Variable Length Coding
Chromi-
nance
Color difference component
EBU
European Broadcasting Union
FEC
Forward Error Correction. System of error control for data transmission where the sender adds redun-
dant data (error-correcting code) to its messages. The receiver can check the accuracy of the trans-
mission and eventually correct errors.
FTP
File Transfer Protocol. Protocol used to transfer files over a TCP/IP network.
GOP
Group Of Pictures. In MPEG video encoding, a group of pictures, or GOP, specifies the order in
which intra-frames and inter-frames are arranged.
The GOP is a group of successive pictures within a MPEG-coded film and/or video stream. Each
MPEG-coded film and/or video stream consists of successive GOPs. From the MPEG pictures con-
tained in it the visible frames are generated.
A GOP can contain the following picture types:
I-picture and/or I-Frame (English intra coded picture) reference picture, corresponds to a fixed image
and is independent of other picture types. Each GOP begins with this type of picture.
P-picture and/or P-Frame (English predictive coded picture) contains difference information from the
preceding I or P-Frame.
B-picture and/or B-Frame (English bidirectional predictive coded pictures) contain difference infor-
mation from the preceding and/or following I or P-Frame.
D-picture and/or D-Frame (English DC direct coded picture) serves the fast advance.
A GOP always begins with an I-Frame. Afterwards several P-Frames follow, in each case with some
frames distance. In the remaining gaps are B-Frames. With the next I-Frame a new GOP begins.
GUI
Graphical User Interface.
HDTV
High Definition Television
HEVC
High Efficiency Video Coding (H.265)
IEC
International Electrotechnical Committee
IP
Internet Protocol
ISO
International Standards Organisation
ITU-R
International Telecommunications Union - Radiocommunications Study Groups
ITU-T
International Telecommunications Union - Telecommunications Standardisation Sector
MGT
Management
