Patent ID: 9344792
Filing Date: 2016-05-17
CPC Classification: H04R

Claim Text:
1. Earphones, comprising: speakers; noise cancellation circuitry; ear presence sensor structures, wherein the ear presence sensor structures comprise light-based sensor structures having at least one light source that emits infrared light and at least one light detector that detects the infrared light emitted by the at least one light source; control circuitry configured to gather information from the ear presence sensor structures indicating whether the speakers are present at the ears of a user and configured to adjust the noise cancellation circuitry in response to the information from the ear presence sensor structures; housing structures in which the speakers are mounted, wherein at least one light-based sensor structure is mounted in the housing structures; and a headband that connects the housing structures, wherein at least one light-based sensor structure is mounted in the headband, and wherein the control circuitry adjusts the noise cancellation circuitry in response to the information from the light-based sensor structures in the housing structures and the light-based sensor structures in the headband.