公开(公告)号：US20230011498A1

公开(公告)日：2023-01-12

申请号：US17373533

申请日：2021-07-12

Applicant: Apple Inc.

Inventor： Dong Zheng ,  James M. Hollabaugh ,  Jihyun Cho ,  Narendra S. Mehta

IPC: G01S17/04 ,  H04B10/516 ,  H04B10/60 ,  G01S7/4861

Abstract: An electronic device may include a proximity sensor for detecting whether an external object is in the vicinity of the device. The proximity sensor may have a light detector and a light source that can be reused for data communications. The light detector may be coupled to optical receiver circuitry, whereas the light source may be coupled to optical transmitter circuitry. The optical transmitter circuitry may include encoding circuits configured to convert electrical signals to optical signals. The optical receiver circuitry may include decoding circuits configured to convert optical signals to electrical signals. The optical signals can be encoded and decoded using pulse width modulation schemes or amplitude modulation schemes.