HOVER-SENSITIVE TOUCHPAD
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United States of America Patent
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Issued Date -
Jan 25, 2018
app pub date -
Jul 29, 2016
filing date -
Jul 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a touch detector having a touch surface, a plurality of antennae positioned beneath the touch surface organized into logical rows and columns, the logical rows and columns being conductively connected via row and column traces to each other, and to signal emitters and signal receivers respectively. The antennae are spaced apart such that they do not touch one another. Signal emitters simultaneously output frequency-orthogonal signals that can be detected by signal processing the signal frames received from the receive antennae. A signal processor produces a heat map of touch proximate to the touch surface based at least in part on a measurement for each of the frequency-orthogonal signals from the frames.
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