公开(公告)号：US12206280B1

公开(公告)日：2025-01-21

申请号：US18201992

申请日：2023-05-25

Applicant: Amazon Technologies, Inc.

Inventor： Samuel Forest Girvin ,  Paul Joseph Schaffert

IPC: F24F11/00 ,  F24F11/46 ,  G06F1/26 ,  H02J7/00 ,  H02J9/06 ,  H02M7/217 ,  H02M5/257

Abstract: Techniques for an electronic device to perform power-stealing techniques to harvest energy from a power-control circuit to power components of the electronic device. In some examples, the electronic device may be connected in the power-control circuit between a power supply and a relay that is selectively configured to activate a power load. According to the techniques described herein, the electronic device may include voltage-drop circuitry that is connected in the power-control circuit such that a voltage drop is produced across electrical components of the electronic device while the relay is in the activated, or triggered, state. In this way, the electronic device may perform power-stealing from the power-control circuit while the relay is maintained in the activated state.

公开(公告)号：US11742692B1

公开(公告)日：2023-08-29

申请号：US16714056

申请日：2019-12-13

Applicant: Amazon Technologies, Inc.

Inventor： Samuel Forest Girvin ,  Paul Joseph Schaffert

IPC: F24F11/00 ,  F24F11/46 ,  G05D23/19 ,  F24D19/10 ,  H02J9/06 ,  G06F1/26 ,  H02M7/217 ,  H02J7/00 ,  H02M5/257

CPC classification number: H02J9/06 ,  G06F1/26 ,  H02J7/007 ,  H02M7/2176 ,  H02M5/2573

Abstract: Techniques for an electronic device to perform power-stealing techniques to harvest energy from a power-control circuit to power components of the electronic device. In some examples, the electronic device may be connected in the power-control circuit between a power supply and a relay that is selectively configured to activate a power load. According to the techniques described herein, the electronic device may include voltage-drop circuitry that is connected in the power-control circuit such that a voltage drop is produced across electrical components of the electronic device while the relay is in the activated, or triggered, state. In this way, the electronic device may perform power-stealing from the power-control circuit while the relay is maintained in the activated state.

公开(公告)号：US09672812B1

公开(公告)日：2017-06-06

申请号：US14030917

申请日：2013-09-18

Applicant: Amazon Technologies, Inc.

Inventor： Yuzo Watanabe ,  Paul Joseph Schaffert ,  Bjorn Hoffmeister ,  Stan Weidner Salvador

IPC: G10L15/00 ,  G10L15/04

CPC classification number: G10L15/22 ,  G10L2015/223

Abstract: A speech-based audio device may be configured to detect a user-uttered trigger expression and to respond by interpreting subsequent words or phrases as commands. In order to distinguish between utterance of the trigger expression by the user and generation of the trigger expression by the device itself, output signals used as speaker inputs are analyzed to detect whether the trigger expression has been generated by the speaker. If a detected trigger expression has been generated by the speaker, it is disqualified. Disqualified trigger expressions are not acted upon the by the audio device.