公开(公告)号：US12101612B2

公开(公告)日：2024-09-24

申请号：US18535433

申请日：2023-12-11

Applicant: Apple Inc.

Inventor： Zhigang Dang ,  Daniel Naito ,  Evan Thompson ,  Peter Poon ,  Manasi Lagare ,  Michael Nussbaum ,  David Sumberg

IPC: H04R3/00 ,  H03F3/183 ,  H03G3/30

CPC classification number: H04R3/007 ,  H03F3/183 ,  H03G3/3005 ,  H03F2200/03

Abstract: A smart speaker power controller may be configured to receive power conforming to one of a plurality of power modes from an input power source. The power controller may be further configured to communicate the power mode to at least one component of a processing system or at least one component of an audio system for operating the smart speaker according to the received power mode, including determining a current limit of a power converter; determining a shutdown voltage threshold and safely shutting down the smart speaker if the input voltage falls below the threshold, and/or modifying audio operation of the smart speaker in response to the power mode. The smart speaker can further include an audio power supply controller configured to monitor energy required to reproduce an audio signal and to servo a power supply voltage provided to an audio amplifier in response to this energy level.

公开(公告)号：US11910171B2

公开(公告)日：2024-02-20

申请号：US17111967

申请日：2020-12-04

Applicant: Apple Inc.

Inventor： Zhigang Dang ,  Daniel Naito ,  Evan Thompson ,  Peter Poon ,  Manasi Lagare ,  Michael Nussbaum ,  David Sumberg

IPC: H04R3/00 ,  H03F3/183 ,  H03G3/30

CPC classification number: H04R3/007 ,  H03F3/183 ,  H03G3/3005 ,  H03F2200/03

Abstract: A smart speaker power controller may be configured to receive power conforming to one of a plurality of power modes from an input power source. The power controller may be further configured to communicate the power mode to at least one component of a processing system or at least one component of an audio system for operating the smart speaker according to the received power mode, including determining a current limit of a power converter; determining a shutdown voltage threshold and safely shutting down the smart speaker if the input voltage falls below the threshold, and/or modifying audio operation of the smart speaker in response to the power mode. The smart speaker can further include an audio power supply controller configured to monitor energy required to reproduce an audio signal and to servo a power supply voltage provided to an audio amplifier in response to this energy level.

公开(公告)号：US20240107229A1

公开(公告)日：2024-03-28

申请号：US18535433

申请日：2023-12-11

Applicant: Apple Inc.

Inventor： Zhigang Dang ,  Daniel Naito ,  Evan Thompson ,  Peter Poon ,  Manasi Lagare ,  Michael Nussbaum ,  David Sumberg

IPC: H04R3/00 ,  H03F3/183 ,  H03G3/30

CPC classification number: H04R3/007 ,  H03F3/183 ,  H03G3/3005 ,  H03F2200/03

Abstract: A smart speaker power controller may be configured to receive power conforming to one of a plurality of power modes from an input power source. The power controller may be further configured to communicate the power mode to at least one component of a processing system or at least one component of an audio system for operating the smart speaker according to the received power mode, including determining a current limit of a power converter; determining a shutdown voltage threshold and safely shutting down the smart speaker if the input voltage falls below the threshold, and/or modifying audio operation of the smart speaker in response to the power mode. The smart speaker can further include an audio power supply controller configured to monitor energy required to reproduce an audio signal and to servo a power supply voltage provided to an audio amplifier in response to this energy level.

公开(公告)号：US10585502B2

公开(公告)日：2020-03-10

申请号：US15680088

申请日：2017-08-17

Applicant: Apple Inc.

Inventor： Michael Nussbaum ,  Blake R. Marshall ,  Jason P. Marini ,  Li-Quan Tan

IPC: G06F3/03 ,  G06F3/044 ,  G06F1/32 ,  G06F3/038 ,  G06F3/0354 ,  G06F1/3234 ,  G06F3/041

Abstract: Input device power consumption can be reduced with a magnetic drive system. In some examples, the input device can include a transformer configured to generate a desired high output voltage from logic-level input pulses. In some examples, the distributed capacitance and associated resonance of the transformer can act as a low-pass filter, and can create a relatively clean output waveform from input logic signal waveforms. In some examples, the transformer can be an autotransformer. In some examples, to stabilize an amplitude of the output by sampling the output of the transformer and adjusting the input to the transformer based on the sampled output.

公开(公告)号：US20220078548A1

公开(公告)日：2022-03-10

申请号：US17111967

申请日：2020-12-04

Applicant: Apple Inc.

Inventor： Zhigang Dang ,  Daniel Naito ,  Evan Thompson ,  Peter Poon ,  Manasi Lagare ,  Michael Nussbaum ,  David Sumberg

IPC: H04R3/00 ,  H03G3/30 ,  H03F3/183

Abstract: A smart speaker power controller may be configured to receive power conforming to one of a plurality of power modes from an input power source. The power controller may be further configured to communicate the power mode to at least one component of a processing system or at least one component of an audio system for operating the smart speaker according to the received power mode, including determining a current limit of a power converter; determining a shutdown voltage threshold and safely shutting down the smart speaker if the input voltage falls below the threshold, and/or modifying audio operation of the smart speaker in response to the power mode. The smart speaker can further include an audio power supply controller configured to monitor energy required to reproduce an audio signal and to servo a power supply voltage provided to an audio amplifier in response to this energy level.