Method, apparatus and system for portable device surface and material analysis

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United States of America Patent

PATENT NO 9880046
SERIAL NO

14712658

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Abstract

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A method and apparatus for determining properties of at least one of a surface or materials adjacent to a portable device. The method includes windowing a segment of the received signal to remove an edge transients, computing the FFT power spectral density of the signal, determining a peak in the spectral energy at a frequency, finding local peaks by determining the difference in the signal amplitude is relation to a pre-determined threshold, and computing harmonic energy according to the local peaks and the difference and determining at least one property of the surface or material.

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Patent Owner(s)

  • TEXAS INSTRUMENTS INCORPORATED

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Burk, Brian Paul Dallas, US 1 0
Murthy, Nitish Allen, US 1 0
Ravindran, Sourabh Dallas, US 27 718
Sathyanarayana, Amardeep Austin, US 13 24

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