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Access Point
A point of connection between a wired LAN and a wireless LAN.
Channel
If several access points which use the same frequency band are located near each
other, radio transmission interference between these access point can occur when
they are being used, and this can in turn result in drops in transmission speeds. In
order to reduce this problem when using wireless LANs, the frequency band can be
divided into 11 channels for communication purposes. (The number of channels
varies depending on the country.) However, because interference between adjacent
channels can occur, the channels available for use are normally spaced 2 or 3
channels apart from each other.
SSID
Abbreviation for Service Set ID. Wireless LANs that utilise access points require the
setting of SSID identification codes in order to distinguish between devices which are
a part of the LAN and devices which are not.
Wireless LAN cards of some manufacturers use the name of “ESSID” or “Network
name” instead of SSID.
WEP
Abbreviation for Wired Equivalent Privacy. A method of encrypting transmitted data.
An encryption key is generated and is given only to the person who will be using the
transmitted data, in order to prevent third parties from decoding the transmitted data.
Not available with this product.
JPEG
Abbreviation for Joint Photographic Experts Group. JPEG is the name of an
international organisation which was jointly established by the ISO and the ITU-TS
(formerly the CCIT), but the term is normally used to refer to the specifications for the
still picture compression algorithm which was formulated by the JPEG. This algorithm
allows still images such as photographs, single frames of moving images and
scanned images to be compressed to up to 1/100th of their original sizes. However,
images which are compressed in this way cannot be fully restored to their original
quality (some deterioration in quality occurs), so that compression rates of 1/5 to 1/30
are normally used. Because of differences in color separation, two format sub-types
are used: RGB (red, green and blue) and CMYK (cyan, magenta, yellow, black).
The projector and the Image Creator 1.0 software do not support the CMYK sub-type
of JPEG file.
BMP
Abbreviation for BitMaP. This is the standard image format for the bitmapped files
(image files consisting of a collection of dots) which are handled by Windows.
Color levels of monochrome, 16 colors, 256 colors and 16.7 million colors are
supported.
PNG
Abbreviation for Portable Network Graphics.
A high compression rate file format that provides restorable compression for line
raster images.
Because it uses restorable compression, it does not result in any loss of image
resolution unlike JPEG.