Systems and methods for tracking impacts

Details Systems and methods for tracking impacts Systems and methods for tracking impacts

2011-03-29

2011-03-29

Yang, Ryan R (Department: 2628)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C178S018040

Reexamination Certificate

active

07916128

ABSTRACT:
Surface impacts are located and characterized based on an acoustic signal produced by the impact despite the presence of signal dispersion. Acoustic signals from the surface may be compared to acoustic signals detected external to the surface in order to eliminate spurious impact sensing due to external sounds. Low-frequency acoustic signals may be sensed and identified as explicit hard “bangs” which are of limited utility for pointing and tracking applications.

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Bennett et al. 1988 Ultrasonics Symposium, IEEE, p. 1049-1052.

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