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    Smart-device-based radar system performing angular estimation using machine learning
    124.
    发明授权
    Smart-device-based radar system performing angular estimation using machine learning 有权

    公开(公告)号：US11573311B2

    公开(公告)日：2023-02-07

    申请号：US16772760

    申请日：2019-04-02

    Applicant: Google LLC

    Inventor： Nicholas Edward Gillian ,  Michal Matuszak ,  Octavio Ponce Madrigal ,  Jaime Lien ,  Patrick M. Amihood ,  Ivan Poupyrev

    IPC: G01S13/44 ,  G01S13/34 ,  G01S13/72 ,  G06N3/04

    Abstract: Techniques and apparatuses are described that implement a smart-device-based radar system capable of performing angular estimation using machine learning. In particular, a radar system 102 includes an angle-estimation module 504 that employs machine learning to estimate an angular position of one or more objects (e.g., users). By analyzing an irregular shape of the radar system 102's spatial response across a wide field of view, the angle-estimation module 504 can resolve angular ambiguities that may be present based on the angle to the object or based on a design of the radar system 102 to correctly identify the angular position of the object. Using machine-learning techniques, the radar system 102 can achieve a high probability of detection and a low false-alarm rate for a variety of different antenna element spacings and frequencies.

    Mobile device-based radar system for providing a multi-mode interface
    125.
    发明授权
    Mobile device-based radar system for providing a multi-mode interface 有权

    公开(公告)号：US11550048B2

    公开(公告)日：2023-01-10

    申请号：US16771647

    申请日：2019-05-20

    Applicant: Google LLC

    Inventor： Eiji Hayashi ,  Vignesh Sachidanandam ,  Leonardo Giusti ,  Jaime Lien ,  Patrick M. Amihood ,  Ivan Poupyrev

    IPC: G01S13/42 ,  G01S13/88 ,  G06F3/01

    Abstract: This document describes techniques and systems that enable a mobile device-based radar system (104) for providing a multi-mode interface (114). A radar field (110) is used to enable a user device (102, 702) to accurately determine a presence or threshold movement of a user near the user device. The user device provides a multi-mode interface having at least first and second modes and providing a black display or a low-luminosity display in the first mode. The user device detects, based on radar data and during the first mode, a presence or threshold movement by the user relative to the user device and responsively changes the multi-mode interface from the first mode to the second mode. Responsive to the change to the second mode, the user device provides visual feedback corresponding to the implicit interaction by adjusting one or more display parameters of the black display or the low-luminosity display.

    HAND GESTURE RECOGNITION BASED ON DETECTED WRIST MUSCULAR MOVEMENTS
    127.
    发明申请
    HAND GESTURE RECOGNITION BASED ON DETECTED WRIST MUSCULAR MOVEMENTS 有权

    公开(公告)号：US20220300082A1

    公开(公告)日：2022-09-22

    申请号：US17249966

    申请日：2021-03-19

    Applicant: GOOGLE LLC

    Inventor： Dongeek Shin ,  Shahram Izadi ,  David Kim ,  Sofien Bouaziz ,  Steven Benjamin Goldberg ,  Ivan Poupyrev ,  Shwetak N. Patel

    IPC: G06F3/01 ,  G06K9/00 ,  G06F1/16

    Abstract: Techniques of identifying gestures include detecting and classifying inner-wrist muscle motions at a user's wrist using micron-resolution radar sensors. For example, a user of an AR system may wear a band around their wrist. When the user makes a gesture to manipulate a virtual object in the AR system as seen in a head-mounted display (HMD), muscles and ligaments in the user's wrist make small movements on the order of 1-3 mm. The band contains a small radar device that has a transmitter and a number of receivers (e.g., three) of electromagnetic (EM) radiation on a chip (e.g., a Soli chip. This radiation reflects off the wrist muscles and ligaments and is received by the receivers on the chip in the band. The received reflected signal, or signal samples, are then sent to processing circuitry for classification to identify the wrist movement as a gesture.

    Radar-based gesture enhancement for voice interfaces
    128.
    发明授权
    Radar-based gesture enhancement for voice interfaces 有权

    公开(公告)号：US11435468B2

    公开(公告)日：2022-09-06

    申请号：US16950248

    申请日：2020-11-17

    Applicant: Google LLC

    Inventor： Leonardo Giusti ,  Ivan Poupyrev ,  Brandon Barbello ,  Patrick M. Amihood

    IPC: G01S13/42 ,  G01S7/02 ,  G01S13/89 ,  G06F3/01 ,  G06F3/16

    Abstract: This document describes techniques and systems that enable radar-based gesture enhancement for voice interfaces. The techniques and systems use a radar field to accurately determine three-dimensional (3D) gestures that can be used instead of, or in combination with, a voice interface to enhance interactions with voice-controllable electronic devices. These techniques allow the user to make 3D gestures from a distance to provide a voice input trigger (e.g., a “listen” gesture), interrupt and correct inaccurate actions by the voice interface, and make natural and precise adjustments to functions controlled by voice commands.

    Touch-Sensitive Braided Cord
    130.
    发明申请
    Touch-Sensitive Braided Cord 有权

    公开(公告)号：US20220179518A1

    公开(公告)日：2022-06-09

    申请号：US17436337

    申请日：2019-03-05

    Applicant: Google LLC

    Inventor： Munehiko Sato ,  Ivan Poupyrev ,  Shozo Harada ,  Shiho Fukuhara

    IPC: G06F3/044

    Abstract: An interactive cord includes one or more touch-sensitive areas configured to detect user input and one or more non-touch-sensitive areas. An outer cover of the interactive cord includes a set of conductive lines braided together with one or more of a plurality of non-conductive lines at the touch-sensitive area. The set of conductive lines defines a plurality of intersections that each form a capacitive touchpoint at the touch-sensitive area. An inner core of the interactive cord includes at least the set of conductive lines and at least one of the plurality of non-conductive lines at the non-touch-sensitive area.

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