HP ac150, User Manual

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3
Terms and Definitions
Term Definition
AWB
A uto W hite B alance-the camcorder attempts to determine the color
temperature of the light and automatically adjust for that color
temperature variability.
Compression
The process of encoding information using fewer bits cf. video, image or
sound file compression.
Exif/JPEG
A compressed file format for digital cameras in which the images are
compressed using the baseline JPEG standard, described in ISO 12234-2,
and metadata and thumbnail images are stored using TIFF tags within an
application segment at the beginning of the JPEG file.
Exposure Index
A numerical value that is inversely proportional to the exposure provided to
an image sensor to obtain an image. Images obtained from a camera using a
range of exposure index values will normally provide a range of image
quality levels.
FHD
F ull H igh D efinition. This implies 1080p video resolution.
fps Frames per second
HD H igh D efinition. This implies 720p video resolution.
HDMI H igh D efinition M ultimedia I nterface – Common connection to HD TVs
ISO Speed
A numerical value calculated from the exposure provided at the focal plane
of an electronic camera to produce specified camera output signal
characteristics using the methods described in the referenced standard. The
ISO speed should correlate with the highest exposure index value that
provides peak image quality for normal scenes.
JPEG
J oint P hotographic E xperts G roup. An image compression method defined in
ISO/IEC 10918-1.
LED
L ight E mitting D iode
OSD
O n S creen D isplay – Usually a reference to the user interface of the
camcorder or camera.
USB
U niversal S erial B us. A digital interface for connecting up to 64 devices in a
tiered-star topology. See http://www.usb.org.
VGA
V ideo G raphics A rray. This is associated with 640 x 480 resolution and is
often call “standard definition”
White Balance
The adjustment of electronic still picture color channel gains or image
processing so that radiation with relative spectral power distribution equal
to that of the scene illumination source is rendered as a visual neutral.