
1-16
Introduction
Final Rev F
Copyright 1996 by LSI Logic Corporation. All rights reserved.
Motion Estimation. The prediction of pixel or block movements between
frames.
NTSC. National Television System Committee. NTSC also refers to the
TV standard in the United States and Japan.
PAL. Phase Alternating Line. PAL also refers to the TV standard in much
of Europe.
PCM. Pulse Code Modulation. Used in CD audio.
PEL. Picture element or pixel.
PES. Packetized Elementary Stream.
Progressive Scan. Same as non-interlaced. Each line of a frame is dis-
played sequentially.
Quantization. A process of scaling down data represented by many bits
into a lower-precision value requiring fewer bits.
RGB. Red, Green, Blue. RGB is the color system used in the computer
industry. The display signal is composed of separately controllable red,
blue, and green signals, as opposed to composite video in which the
luminance and chrominance video signals are combined prior to output.
Run-Length Coding. Run-Length coding replaces sequences of bits
with a run-level pair that indicates the number of zeroes in a row followed
by a coefcient.
Spatial Redundancy. Compressible repetition of patterns in a 2-d
image.
SECAM. Sequentiel Couleur avec Memoire. SECAM is the TV standard
in France and much of the former Soviet Union.
SMPTE. Society of Motion Picture and Television Engineers.
SMPTE Time Code. Standard (hr:min:sec:frame) method to record and
identify video frames.
T-1 Channel. A T-1 channel transmits and receives digital data at 1.44
Mbits per second.