公开(公告)号：US20230071021A1

公开(公告)日：2023-03-09

申请号：US17792886

申请日：2021-01-22

Applicant: Dolby Laboratories Licensing Corporation

Inventor： Andrea FANELLI ,  Evan David GITTERMAN ,  Nathan Carl SWEDLOW ,  Alex BRANDMEYER ,  McGregor Steele JOYNER ,  Poppy Anne Carrie CRUM

IPC: G06F3/01 ,  A61B5/256

Abstract: A system for determining a direction of gaze of a user, comprising a set of electrodes arranged on earpieces, each electrode comprising a patch of compressible and electrically conducting foam material. The system further includes circuitry connected to the electrodes and configured to receive a set of voltage signals from a set of electrodes arranged on an audio endpoint worn by a user, multiplex said voltage signals into an input signal, remove a predicted central voltage from said input signal, to provide a detrended signal, and determine said gaze direction based on said detrended signal. Such conducting foam materials provide satisfactory bio-sensing performance for a wide range of compression levels and over time. In the case of on-ear headphones, the foam electrodes may be integrated in the cuffs with little or no effect on the comfort level.