US 9,811,212 B2
Ultrasound sensing of proximity and touch
Petri Jarske, Tampere (FI)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Feb. 25, 2015, as Appl. No. 14/630,836.
Prior Publication US 2016/0246449 A1, Aug. 25, 2016
Int. Cl. G06F 3/043 (2006.01); B06B 1/06 (2006.01); G06F 3/041 (2006.01)
CPC G06F 3/0436 (2013.01) [B06B 1/0644 (2013.01); G06F 3/0416 (2013.01); G06F 3/0433 (2013.01); G06F 2203/04101 (2013.01); G06F 2203/04108 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a body;
a housing forming a cavity over the body and comprising a first opening;
a first transducer connected to the body and configured to produce a first wave into a volume of airspace in proximity to the electronic device, wherein the first transducer is positioned inside the cavity and delivers the first wave from the cavity into the volume of airspace;
a first receiving transducer configured to receive the first wave;
a proximity sensing element configured to detect proximity of an object from an echoed first wave;
the first transducer configured to produce a second wave, wherein a connection between the first transducer and the body is configured to deliver the second wave to the body;
a second receiving transducer configured to receive the second wave from the body; and
a touch sensing element configured to detect a touch by analyzing the second wave received by the second receiving transducer.