User`s manual

Appendix • 74
Attribution of visual sensation according to which area appears to be similar
to one, or proportions of two, of the perceived colors red, yellow, green, and
blue.
NTSC:
Color TV standard developed in the U.S. in 1953 by
N
ational
T
elevision
S
ystem
C
ommittee. NTSC is used in United States, Canada, Japan, in most
of the American continent countries and in various Asian countries. The rest
of the world uses either some variety of PAL or SECAM standards.
NTSC runs on 525 lines/frame and its vertical frequency is 60Hz. NTSC’s
frame rate is 29.97 frames/sec.
PAL:
PAL (
P
hase
A
lternating
L
ine) TV standard was introduced in the early 1960”s
in Europe. It has better resolution than NTSC, having 625 lines/frame, but the
frame rate is slightly lower, being 25 frames/sec. PAL is used in most of the
western European countries (except France, where SECAM is used),
Australia, some countries in Africa, some countries in South America and in
some Asian countries. There are various versions of PAL, the most
commonly used method is called PAL B/G, but others include PAL I (used in
the UK and in Ireland) and PAL M (hybrid standard, which has the same
resolution as NTSC, but uses PAL transmission and color coding
technology).
Saturation:
A characteristic describing color amplitude or intensity. A color of a given hue
may consist of low or high saturation value, which relates to the vividness of
the color.
AGC
Abbreviation for automatic gain control. On a TV or VCR, AGC is a circuit that
automatically adjusts the incoming signal to the proper levels for display or
recording. On a video camera, AGC is a circuit that automatically adjusts the
sensitivity of the pickup tube to render the most pleasing image.