AJA FS2 - Manual (Page 220)

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223 FS2 Installation and Operation Manual —
Resolution Resolution usually refers to the density of lines, and dots per line, that represent an
image. It is measured by the number of pixels displayed. A higher number of lines and
dots provides sharper and more detailed picture content. Analog television pictures
have over 200,000 color pixels while HDTV—at 1080 vertical pixels by 1920 horizontal
pixels—offer greater than 2 million pixels per picture.
Sampling A digital process by which analog information is measured in intervals to convert
analog to digital.
SDTV (Standard-
Definition
Television) Standard Definition Television pictures are higher quality than NTSC, however, they
do not reach the quality and resolution of HD. SDTV is based on 480 lines of vertical
resolution, available with both interlaced and progressively scanned formats.
SD-SDI Refers to a standard definition signal provided on a serial digital connection.
Sidebars See “Barn Doors.”
Tri-level Sync A form of analog sync reference used in HD video. Tri-level sync contains both a
negative-going and a positive-going pulse centered around the blanking level
(ground).
Upconverting Process by which a standard definition picture is changed to a simulated high-
definition picture.
Widescreen Widescreen TV is a picture with a 16:9 aspect ratio. 16:9 is the aspect ratio of movie
screen and widescreen DTV formats used in all HDTV (High Definition TV) and some
SDTV (Standard Definition TV); it stands for 16 units of width for every 9 units of
height.