Appendix; Glossary - ADLINK Technology RTV Series User Manual

7

Appendix

7.1 Glossary

Brightness:
Attribute of a visual sensation according to which an area appears
to exhibit more or less light
CCIR:
An acronym to designate a scanning system used in Europe. The
CCIR system is made of two interlaced fields of 312.5 lines, for a
total of 625 lines. In each field, only 287.5 lines are visible, for a
total of 575 visible lines. A line lasts 64 ms, of which approximately
52 ms are conveying visible pixels.
Composite Video:
Composite video (CVS/CVBS) signal carries video picture infor-
mation for color, brightness and synchronizing signals for both hor-
izontal and vertical scans.
CIF:
CIF has 352(H) x 288(V) luminance pixels, and 176(H) x 144(V)
chrominance pixels. QCIF is a similar picture format with one-
quarter the size of CIF.
EIA:
An acronym to designate a scanning system used in America and
Japan. The EIA system is made of two interlaced fields of 262.5
lines, for a total of 525 lines. In each field, only 242.5 lines are vis-
ible, for a total of 485 visible lines (typical value). A line lasts 63.56
ms, of which approximately 52 ms are conveying visible pixels.
Field:
For interlaced video the total picture is divided into two fields, one
even and one odd, each containing one half of the total vertical
information. Each field takes one sixtieth of a second (one fiftieth
for PAL) to complete. Two fields make a complete frame of video.
Appendix 165