Patent ID: 9686602
Date: 2017-06-20
CPC Classifications: H04R

Claim:
1. A headphone, comprising: a speaker configured to generate sound; a speaker cover covering the speaker; a cushion covering the speaker cover and configured to be in contact with an ear of a user, in use; and a force sensor sandwiched between the speaker cover and the cushion; wherein in response to the cushion pressing against the force sensor in a direction toward the speaker cover and the speaker when the user puts on the headphone, the force sensor is configured to generate a first signal triggering power-on or playback of audio through the speaker, wherein the force sensor is a piezo switch comprising, between the cushion and the speaker cover: wherein the electrodes are between the piezo sheet and the cushion, wherein the headphone further comprises a space between the piezo sheet and the electrodes when the cushion does not press against the force sensor, and wherein, in response to the cushion pressing against the force sensor in the direction toward the speaker cover and the speaker, the electrodes are moveable in said direction toward the piezo sheet to (i) contact the piezo sheet, and then (ii) squeeze the piezo sheet to establish an electrical path between the electrodes and through the piezo sheet for generating the first signal.