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    Smartphone-Based Power-Efficient Radar Processing and Memory Provisioning for Detecting Gestures
    12.
    发明申请
    Smartphone-Based Power-Efficient Radar Processing and Memory Provisioning for Detecting Gestures 审中-公开

    公开(公告)号：US20200064445A1

    公开(公告)日：2020-02-27

    申请号：US16106315

    申请日：2018-08-21

    申请人： Google LLC

    发明人： Patrick M. Amihood ,  Abhijit Aroon Shah ,  Emanoil Felician Bors

    IPC分类号： G01S7/41 ,  G01S13/58 ,  G06F3/01 ,  H04W52/02 ,  H04M1/02

    摘要： Techniques and apparatuses are described that implement smartphone-based power-efficient radar processing and memory provisioning for detecting gestures. The described techniques map different situations that occur with a user to different memory states. A radar processing system's memory management module allocates at least one memory pool according to an active memory state. As the radar system detects different situations that occur with the user, the memory management module reallocates the memory pool for the appropriate memory state, which can adjust a power mode of the radar system. In some cases, physically separate memories may be allocated for different memory states, which respectively include one or more sequences that are executed by different processors. The memory management module enables efficient use of available power and available memory for radar processing such that a total amount of power and a total size of memory used may be significantly reduced for detecting gestures.

    Power Management Using a Low-Power Radar
    14.
    发明申请
    Power Management Using a Low-Power Radar 审中-公开

    公开(公告)号：US20180329050A1

    公开(公告)日：2018-11-15

    申请号：US15974528

    申请日：2018-05-08

    申请人： Google LLC

    发明人： Patrick M. Amihood ,  Abhijit Shah ,  Jaime Lien ,  Hakim Kader Bhai Raja

    IPC分类号： G01S13/88 ,  G01S13/18 ,  G01S13/04 ,  H04W52/02

    CPC分类号： G01S13/88 ,  G01S7/02 ,  G01S13/04 ,  G01S13/18 ,  H04W52/0219

    摘要： Techniques and apparatuses are described that enable power management using a low-power radar. The described techniques enable a radar system to reduce overall power consumption, thereby facilitating incorporation and utilization of the radar system within power-limited devices. In one aspect, the radar system can replace other power-hungry sensors and provide improved performance in the presence of different environmental conditions, such as low lighting, motion, or overlapping targets. In another aspect, the radar system can cause other components within the electronic device to switch to an off-state based on detected activity in an external environment. By actively switching the components between an on-state or the off-state, the radar system enables the computing device to respond to changes in the external environment without the use of an automatic shut-off timer or a physical touch or verbal command from a user.

    Multi-radar system
    16.
    发明授权
    Multi-radar system 有权

    公开(公告)号：US12038498B2

    公开(公告)日：2024-07-16

    申请号：US17349597

    申请日：2021-06-16

    申请人： Google LLC

    发明人： Patrick M. Amihood ,  Octavio Ponce Madrigal

    IPC分类号： G01S13/88 ,  G06F3/01 ,  G06V40/20

    CPC分类号： G01S13/88 ,  G06F3/011 ,  G06F3/017 ,  G06V40/20

    摘要： Techniques and apparatuses are described that implement a multi-radar system within a device and optimize operation of the multi-radar system. The multi-radar system includes two or more radar circuits located at different positions on the device. The multi-radar system also includes an optimization controller, which controls operational states of the radar circuits. In particular, the optimization controller determines respective operational states of the radar circuits to optimize performance of the multi-radar system under certain constraints. For example, the optimization controller can alter the respective operational states for different radar circuits responsive to detecting various trigger events. In this way, the optimization controller can selectively alter the operational states of the radar circuits for various situations.

    Smart-Device-Based Radar System Performing Near-Range Detection
    18.
    发明公开
    Smart-Device-Based Radar System Performing Near-Range Detection 审中-公开

    公开(公告)号：US20230161027A1

    公开(公告)日：2023-05-25

    申请号：US17905436

    申请日：2020-03-04

    申请人： Google LLC

    发明人： Patrick M. Amihood ,  Cody Blair Wortham

    IPC分类号： G01S13/58 ,  G01S7/02 ,  G01S7/41

    CPC分类号： G01S13/581 ,  G01S7/023 ,  G01S7/415

    摘要： Techniques and apparatuses are described that implement a smart-device-based radar system capable of performing near-range detection. The radar system employs a near-range detection module for detecting objects at near ranges in the presence of interference and a far-range detection module for detecting objects at far ranges. By evaluating separate range intervals, these modules can be designed to achieve a target false-alarm rate and detection performance by tailoring their processing to general characteristics of objects and interference at their respective range intervals. This enables the near-range detection module to detect a near-range object without generating a false detection associated with the interference. By utilizing the near-range detection module and the far-range detection module, the radar system can detect objects at both near and far ranges while achieving a target false-alarm rate.

    Face Authentication Anti-Spoofing Using Ultrasound
    19.
    发明申请
    Face Authentication Anti-Spoofing Using Ultrasound 有权

    公开(公告)号：US20230126062A1

    公开(公告)日：2023-04-27

    申请号：US17929991

    申请日：2022-09-06

    申请人： Google LLC

    发明人： Octavio Ponce Madrigal ,  Anton Heistser ,  Patrick M. Amihood

    IPC分类号： G06F21/32 ,  G06V10/25 ,  G06V10/44 ,  G06V10/74 ,  G06V40/16 ,  G06V40/40 ,  G06T7/20 ,  G06T7/70

    摘要： Techniques and apparatuses are described that implement face authentication anti-spoofing using ultrasound. In particular, a face-authentication system uses ultrasound to distinguish between a real human face and a presentation attack that uses instruments to present a version of a human face. The face-authentication system includes or communicates with an ultrasonic sensor, which can detect a presentation attack and notify the face-authentication system. In general, the ultrasonic sensor analyzes characteristics of a presented object and determines whether the object represents a human face or a presentation attack instrument. In this way, the ultrasonic sensor can prevent unauthorized actors from using the presentation attack to gain access to a user's account or information.