Photo; Video - D-Link MediaLounge DSM-520 User Manual

DSM-520 User's Manual Glossary

Photo

BMP: The
standard bit-mapped graphics format used in the Windows environment. By
convention, graphics files in the BMP format end with a .BMP extension.
GIF: Pronounced jiff or giff and stands for graphics interchange format, it is a
bit-mapped
graphics file format. GIF supports color and various resolutions. It uses data compression,
but it is limited to a 256-color palette.
JPG: Short for Joint Photographic Experts Group, and pronounced jay-peg. JPEG is a
lossy
compression technique for color images. Although it can reduce files sizes to about 5% of
their normal size, some detail is lost in the compression.
JP2: JP2 is the file extension for the new image format called JPEG2000 based on the latest
image compression technology.
PNG: Short for Portable Network Graphics, is a
bit-mapped graphics format similar to GIF. In
fact, PNG was approved as a standard by the World Wide Web consortium to replace GIF
because GIF uses a patented data compression scheme. In contrast, PNG is patent and
license-free.
TIFF: Acronym for Tagged Image File Format, and is one of the most widely
supported file
formats for storing bit-mapped images on personal computers. TIFF graphics can be any
resolution, and they can be black and white, gray-scaled, or color. Files in TIFF format often
end with a .tif extension.

Video

480p: Unconverted material from the standard NTSC 480 lines interlaced video.
1080i: 1080 alternating interlaced lines, accepted as the most common High-Definition
standard with the most line count, and available on virtually all HD-Ready and HDTV.
720p: 720 progressive lines translates to less resolution, however one that translates to seeing
more on screen in a single pass, eliminating artifacting. 720p DTVs use a higher frequency,
and therefore are more difficult to build.
AVI: Short for Audio Video Interleave, the
file format for Microsoft's Video for Windows standard.
See under Video for Windows.
Bitrate: Is the frequency at which bits are passing a given "point".
DivX: Is a video format that is MPEG-4 compliant and widely used on the Internet for encoding
video files.
HDMI: High-Definition Multimedia Interface is an industry-supported, uncompressed, all-digital
audio/video interface. HDMI supports standard, enhanced, or high-definition video, plus
multi-channel digital audio on a single cable.
Interlaced: Splits the video into two fields, which are rendered in two passes to produce the
whole image.
D-Link Systems, Inc. 121