Surface sensing via resonant sensor
AssigneeMicrosoft Technology Licensing, LLC
InventorsJouya Jadidian, Scott Francis Fullam, Rune Hartung Jensen
Life of this patent
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Abstract
Examples are disclosed that relate to sensing a position of a surface proximate to a resonant LC sensor. One example provides a method on a sensing device comprising one or more resonant LC sensors each configured to output a signal responsive to a position of a surface proximate to the resonant LC sensor. The method comprises, for each LC sensor, generating an oscillating signal on an antenna of the resonant LC sensor and detecting a near-field response of the resonant LC sensor at a selected frequency.
Claims20
On a sensing device comprising one or more sensors each comprising an antenna and an amplifier, a method comprising:
- for each sensor:
- providing a driven signal to a first input of the amplifier;
- generating an oscillating signal on the antenna at a selected frequency via a second input of the amplifier;
- and
- detecting a change in a capacitance on the antenna at the selected frequency.
A device comprising:
- a frame;
- and
- one or more sensors supported by the frame, each sensor comprising:
- an antenna having a capacitance that is a function of a proximity to a surface to the antenna,
- an amplifier comprising a first input configured to generate an oscillating signal on the antenna based on a second input of the amplifier, and
- an oscillator configured to provide a driven signal to the second input of the amplifier.
A wearable device comprising:
- a frame configured to be worn on a human head;
- and
- a sensor array configured for facial sensing, the sensor array comprising a plurality of sensors spatially distributed on the frame, each sensor comprising:
- an antenna having a capacitance that is a function of a proximity to a surface of a face to the antenna,
- an amplifier comprising a first input configured to generate an oscillating signal on the antenna based on a second input of the amplifier, and
- an oscillator configured to provide a driven signal to the second input of the amplifier.
Dependencies are inferred from the claim text.