# Amazon Technologies — Patents explained on PatentBrief

Amazon Technologies has 7 landmark patents explained in plain English on PatentBrief.

- [How Wearable Devices Use Location and Biometrics to Know Who You Are](https://patentbrief.org/patent/us/20220189458/speech-based-user-recognition)
  This patent describes how a computer system can figure out who is using a wearable device by combining its location data with biometric information like a face scan or voice recording.
- [Training Robot AI Models Faster Using Smart Simulations](https://patentbrief.org/patent/us/11836577/reinforcement-learning-model-training-through-simulation) — granted 2023
  This patent describes a cloud service that helps train artificial intelligence models for robots by running simulations, even suggesting improvements to the AI's learning rules before starting.
- [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 Computers Train AI Models Using Separate Virtual Simulations](https://patentbrief.org/patent/us/11429762/simulation-orchestration-for-training-reinforcement-learning-models) — granted 2022
  This patent describes a system where one virtual computer runs simulations of a system, like a robot, and another virtual computer uses the simulation data to teach an AI model how to make better decisions.
- [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.
- [Making Computer Voices Sound More Expressive from Your Speech](https://patentbrief.org/patent/us/11062694/text-to-speech-processing-with-emphasized-output-audio) — granted 2021
  This patent describes how a computer listens to your spoken words, figures out which parts you emphasized, and then makes its own computer-generated voice emphasize those same parts when it speaks back.
- [How Voice Assistants Change Their Speech Based on How You Talk](https://patentbrief.org/patent/us/10276149/dynamic-text-to-speech-output) — granted 2019
  This patent describes a system where a voice-controlled device adjusts its text-to-speech output characteristics, like speed or tone, based on the user's speaking habits or current situation, making responses feel more natural and personalized.

**Full profile:** https://patentbrief.org/company/amazon-technologies

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