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technical description |
The Oral Mouse
is in many respects similar to sonar. It directs inaudible ultrasound pulses into the oral cavity where it is reflected by tissues and bones. Ultra sound microphones receive the reflected sounds and feed the signal into a processing unit or directly to the PC for further analysis where one of two different methods can be used:
- Image analysis. By synthesizing the signal into an image it is possible to track the position of tissue contours of the tongue, and cartilage, in a three dimensional space.
- Acoustical
analysis. Finds features directly in the signal waveform and use a
dictionary for translation to mouse movements.
Clicks,
double clicks, right and left clicks and other commands are implemented by
detecting ‘signatures’ or sequences of movements and positions.
To
gain user acceptance the learning curve for the Oral Mouse should be kept at a minimum. Translation of movements and commands
must be fully customizable and implemented in a learning module.
For further information, see patent and technical preliminary investigation.
Patent
Patent application submitted 2001-03-15
Swedish patent granted 2003-02-04 - International PCT submitted.
The sensors-transcdusers - 1Q 2006
Prototype 2, presented 2Q 2005
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The Oral Mouse
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