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    ON-DEMAND ACTIVATION OF MEMORY PATH DURING SLEEP OR ACTIVE MODES
    15.
    发明公开
    ON-DEMAND ACTIVATION OF MEMORY PATH DURING SLEEP OR ACTIVE MODES 审中-公开

    公开(公告)号：US20240354012A1

    公开(公告)日：2024-10-24

    申请号：US18760849

    申请日：2024-07-01

    申请人： Ambiq Micro, Inc.

    发明人： Daniel Martin Cermak ,  Scott McLean Hanson ,  Yousof Mortazavi ,  Ramakanth Kondagunturi

    IPC分类号： G06F3/06

    CPC分类号： G06F3/0625 ,  G06F3/0626 ,  G06F3/0655 ,  G06F3/0673

    摘要： A low-power system-on-chip includes an originating controller, a fabric, and a power controller. The originating controller is configured to initiate a memory transaction request including a source address. The fabric includes an arbiter configured to receive the memory transaction request and determine a first memory device associated with the memory transaction request. The power controller is configured to selectively change a first memory bank of the first memory device from a first power mode to a second power mode based at least in part on the source address. The fabric is configured to perform a memory operation by (a) receiving stored data from memory storage locations corresponding to the source address when the memory transaction request includes a read request, and (b) sending data included in the memory transaction request to the memory storage locations when the memory transaction request includes a program or a write request.

    System for providing power to low power systems
    16.
    发明授权
    System for providing power to low power systems 有权

    公开(公告)号：US12045116B2

    公开(公告)日：2024-07-23

    申请号：US18093907

    申请日：2023-01-06

    申请人： Ambiq Micro, INc.

    发明人： Ivan Bogue ,  Yousof Mortazavi ,  Jesse Coulon ,  Rajeev Srivastava

    IPC分类号： G06F1/00 ,  G06F1/26 ,  G06F1/3296

    CPC分类号： G06F1/3296 ,  G06F1/263

    摘要： A system comprises a microcontroller system comprising a CPU, an I/O module, and a microcontroller system power input, a power supply comprising a first power supply output providing power at a first power level, and a second power supply output providing power at a second power level, and a switch comprising a signal input communicatively coupled to the I/O module and configured to receive a status signal from the I/O module, a first switch power input electrically coupled to the first power supply output, a second switch power input electrically coupled to the second power supply output, and a switch power output electrically coupled to the microcontroller system power input and configured to output power to the microcontroller system.

    System for providing power to low power systems
    18.
    发明授权
    System for providing power to low power systems 有权

    公开(公告)号：US11573624B1

    公开(公告)日：2023-02-07

    申请号：US17835217

    申请日：2022-06-08

    申请人： Ambiq Micro, Inc.

    发明人： Ivan Bogue ,  Yousof Mortazavi ,  Jesse Coulon ,  Rajeev Srivastava

    IPC分类号： G06F1/00 ,  G06F1/3296 ,  G06F1/26

    摘要： In some embodiments, a system comprises a microcontroller system comprising a CPU, an I/O module, and a microcontroller system power input, a power supply comprising a first power supply output providing power at a first power level, and a second power supply output providing power at a second power level, and a switch comprising a signal input communicatively coupled to the I/O module and configured to receive a status signal from the I/O module, a first switch power input electrically coupled to the first power supply output, a second switch power input electrically coupled to the second power supply output, and a switch power output electrically coupled to the microcontroller system power input and configured to output power to the microcontroller system.

    Voice Activty Detection Using Zero Crossing Detection
    19.
    发明申请
    Voice Activty Detection Using Zero Crossing Detection 有权

    公开(公告)号：US20220130410A1

    公开(公告)日：2022-04-28

    申请号：US17081378

    申请日：2020-10-27

    申请人： Ambiq Micro, Inc.

    发明人： Roger David Serwy

    IPC分类号： G10L25/09 ,  G10L15/02 ,  G10L15/10

    摘要： A first VAD system outputs a pulse stream for zero crossings in an audio signal. The pulse density of the pulse stream is evaluated to identify speech. The audio signal may have noise added to it before evaluating zero crossings. A second VAD system rectifies each audio signal sample and processes each rectified sample by updating a first statistic and evaluating the rectified sample per a first threshold condition that is a function of the first statistic. Rectified samples meeting the first threshold condition may be used to update a second statistic and the rectified sample evaluated per a second threshold condition that is a function of the second statistic. Rectified samples meeting the second threshold condition may be used to update a third statistic. The audio signal sample may be selected as speech if the second statistic is less than a downscaled third statistic.

    Low Complexity Voice Activity Detection Algorithm
    20.
    发明申请
    Low Complexity Voice Activity Detection Algorithm 有权

    公开(公告)号：US20220130405A1

    公开(公告)日：2022-04-28

    申请号：US17081640

    申请日：2020-10-27

    申请人： Ambiq Micro, Inc.

    发明人： Roger David Serwy

    IPC分类号： G10L19/26 ,  G06F17/18

    摘要： A first VAD system outputs a pulse stream for zero crossings in an audio signal. The pulse density of the pulse stream is evaluated to identify speech. The audio signal may have noise added to it before evaluating zero crossings. A second VAD system rectifies each audio signal sample and processes each rectified sample by updating a first statistic and evaluating the rectified sample per a first threshold condition that is a function of the first statistic. Rectified samples meeting the first threshold condition may be used to update a second statistic and the rectified sample evaluated per a second threshold condition that is a function of the second statistic. Rectified samples meeting the second threshold condition may be used to update a third statistic. The audio signal sample may be selected as speech if the second statistic is less than a downscaled third statistic.