Specifications

49
and control. It compromised of numerous left to right drop down
boxes, once again the GUI design reflects the remotes design in that it
is not clearly labelled and many of the icons used are none descript
giving no indication as to what there function actually is until they
have been selected. Once selected the lists value appears, i.e. the word
screen appears on the GUI’s ‘screen’ menu only after it has been
navigated to. This gives the user a sense of being lost, as he/she
cannot assume to know the values of what are vague and ambiguous
menu icons and does not know where to navigate. It would have made
far more sense to leave menu values on screen at all times whilst the
GUI is active, the rollover approach to this navigation system fails to
lend itself to easy user navigation.
Further problems occurred mainly on the brightness control
task whereby an up and down arrow interface was poorly designed in
that it was far too small, users took a lot time to figure out the proper
functioning of this interface approach with many taking a few
attempts to select the correct arrow key, this was also a result of what
was perceived to be a time lapse between the remote and the
projector, this may have also been contributed to by individual users
position in relation to the projectors IR sensor, leading to time delay
and frustration in the user, which makes them even more prone to
making mistakes and detracts from what should be a straight forward
and therefore enjoyable user experience.
The major GUI and remote control layout issues will be
addressed in the form of a revised prototype following a summary of
our users task experiences. Indeed, many of the simpler tasks posed
no problems for our user at all this is primarily due to our now over
familiarity with our interactive television remote controls and the
similarities between it and the projectors remote. Also the more
difficult tasks where not impossible, successful completion of the
tasks set for our users were inevitable once there familiarity with its