# Eric Christian Hirsch — Patents explained on PatentBrief

Eric Christian Hirsch has 1 landmark patent explained in plain English on PatentBrief.

- [How Wireless Earbuds Detect Hand Gestures Using Invisible Light or Sound](https://patentbrief.org/patent/us/9949013/airpods-charging-case) — granted 2018
  A system for wireless earbuds that uses pulses of infrared light or ultrasound to detect hand movements near the ear, allowing users to control devices without touching them.

**Full profile:** https://patentbrief.org/inventor/eric-christian-hirsch

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_Source: PatentBrief — https://patentbrief.org. Plain-English explanations of US patents._