Thomas Kunz
Systems and Computer Engineering
17
HTML and Mobile Devices
nHTML
–designed
for computers with “high” performance, color high-resolution display, mouse, hard disk
–typically,
web pages optimized for design, not for communication
nMobile devices
–often only
small, low-resolution displays, very limited input interfaces (small touch-pads, soft-keyboards)
nAdditional “features”
–animated
GIF, Java AWT, Frames, ActiveX Controls, Shockwave, movie clips, audio, ...
–many web
pages assume true color, multimedia support, high-resolution and many plug-ins
nWeb pages ignore the heterogeneity of
end-systems!
–e.g.,
without additional mechanisms, large high-resolution pictures would be transferred to a mobile phone with a low-resolution
display causing high costs