# Bjorn Hoffmeister — Patents explained on PatentBrief

Bjorn Hoffmeister has 2 landmark patents explained in plain English on PatentBrief.

- [How Voice Assistants Recognize Who is Talking](https://patentbrief.org/patent/us/11514901/anchored-speech-detection-and-speech-recognition) — granted 2022
  This patent describes a system that uses a recorded voice sample to identify if new speech comes from the same person, allowing voice assistants to only respond to specific users.
- [How Smart Speakers Know You're Talking to Them After a Command](https://patentbrief.org/patent/us/11361763/detecting-system-directed-speech) — granted 2022
  This patent describes how a smart speaker system can tell if follow-up speech is meant for it, even without a "wake word," by analyzing voice activity and partial speech recognition results using an AI model.

**Full profile:** https://patentbrief.org/inventor/bjorn-hoffmeister

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