Transcript Slide 1

A Customizable Hardware Interface for
Mobile Devices
Advisor: Paul Blair, Calit2 ([email protected])
Author: Norman Liu ([email protected])
Background and Applications: Mobile
phone technology has become pervasive
in the last few years. However, some
people, due to disabilities, are not able to
use mobile phones due to their small
controls and form factors. A more flexible
interface is needed to help these people
use mobile phones easily.
Features:
• Uses a serial mouse to create eight
different inputs required to enable
control of all features of a Symbian
OS mobile phone
• Four configurable input speed
• The device interface includes a
microcontroller, voltage regulator, and
a MAX232 chip.
• Size (WxL): 2 in. x 3 in.
• Consumes about 35mA of current
• Communicate with mobile phones
using Infrared
Disadvantage of Other Approaches:
• A 8-button interface and a voice command interface were previously
developed
• The disadvantage of the 8-button interface is that you have to buy eight
accessible buttons and 'assistive' devices, which tend to be too expensive
for many users.
• The disadvantages of a voice command interface are the inadequate
recognition accuracy, especially in noisy environment, and it requires user
activation through a button. (Impossible for users with speech/motor
impairments)
Advantages of New Approach
• It is smaller and easier for people to carry around.
• It can be customized for specific disabilities.
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