Amazon Technologies, Inc.

Marko Bundalo

Dibyendu Nandy

Bhupal Kanaiyalal Dharia

Hannan Ma

John S Wang

Jason A Graetz

Shuoqin Wang

Yuting Yeh

Vidhyananth Ramasamy Venkatasamy

Matthew E Wong

Kamran Mohajer

Girish Sidhmalswamy Ghongdemath

This disclosure describes, in part, techniques for performing multi-path calculations for energy levels on an electronic device. For instance, the electronic device may include a first circuit and a second circuit, where the first circuit uses less power than the second circuit. As such, when operating in a standby mode, the electronic device may use the first circuit to calculate energy levels at the electronic device, such as speech-energy values and ambient-energy values. Additionally, while operating in an active mode, the electronic device may active the second circuit and then use the second circuit to calculate the energy levels at the electronic device. The first circuit and the second circuit can send/receive current energy levels between one another so that the electronic device can continually calculate the energy levels even when the electronic device switches between modes of operation.

Multi-path calculations for device energy levels

Apparatuses and systems for conserving power for a portable electronic device that monitors local audio for a wakeword are described herein. In a non-limiting embodiment, a portable electronic device may have two-phases. The first phase may be a first circuit that stores an audio input while determining whether human speech is present in the audio input. The second phase may be a second circuit that activates when the first circuit determines that human speech is present in the audio input. The second circuit may receive the audio input from the first circuit, store the audio input, and determine whether a wakeword is present within the audio input.

Hands free always on near field wakeword solution

A portable electronic device determines a battery available power for the device's battery and manages device power usage based upon the battery available power. The device includes a battery and a controller. The controller is configured to receive a first voltage value for the battery at a first time, a first current value for the battery, a second voltage value for the battery at a second time, and a second current value for the battery. It is determined that a time difference between the first time and the second time exceeds a predetermined time threshold. An estimated resistance of the battery is determined based at least on a first difference between the first current value and the second current value and a second difference between the first voltage value and the second voltage value. Real-time power usage of the device is controlled based on the estimated resistance of the battery.

Method for determining battery available power for an electronic device

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San Jose, CA, United States of America

Marko Bundalo