公开(公告)号：US10782390B2

公开(公告)日：2020-09-22

申请号：US15928346

申请日：2018-03-22

Applicant: Google LLC

Inventor： Jaime Lien ,  Changzhan Gu

IPC: G01S7/03 ,  G01S13/58 ,  G01S13/34 ,  H04W88/06 ,  G01S7/28 ,  G01S7/285 ,  G01S7/35 ,  G01S13/06 ,  H04B1/44 ,  H04L5/14 ,  G01S13/02

Abstract: Techniques and apparatuses are described that enable full-duplex operation for radar sensing using a wireless communication chipset. A controller initializes or controls connections between one or more transceivers and antennas in the wireless communication chipset. This enables the wireless communication chipset to be used as a continuous-wave radar or a pulse-Doppler radar. By utilizing these techniques, the wireless communication chipset can be re-purposed or used for wireless communication or radar sensing.

公开(公告)号：US10761204B2

公开(公告)日：2020-09-01

申请号：US15844493

申请日：2017-12-15

Applicant: Google LLC

Inventor： Patrick M. Amihood ,  David Weber ,  Houshang Aghahassan ,  Abhijit A. Shah ,  Jaime Lien

IPC: G01S13/72 ,  G01S13/24 ,  G01S13/931 ,  G01S7/40 ,  G01S7/02

Abstract: Techniques and apparatuses are described that enable radar attenuation mitigation. To improve radar performance, characteristics of an attenuator and/or properties of a radar signal are determined to reduce attenuation of the radar signal due to the attenuator and enable a radar system to detect a target located on an opposite side of the attenuator. These techniques are beneficial in situations in which the attenuator is unavoidably located between the radar system and a target, either due to integration within other electronic devices or due to an operating environment. These techniques save power and cost by reducing the attenuation without increasing transmit power or changing material properties of the attenuator.

公开(公告)号：US11709552B2

公开(公告)日：2023-07-25

申请号：US17023122

申请日：2020-09-16

Applicant: Google LLC ,  The Board of Trustees of the Leland Stanford Junior University

Inventor： Jaime Lien ,  Erik M. Olson ,  Patrick M. Amihood ,  Ivan Poupyrev

IPC: G06F3/01 ,  G01S7/41 ,  G01S13/88 ,  G01S13/58 ,  G01S13/89 ,  G01S13/66

CPC classification number: G06F3/017 ,  G01S7/415 ,  G01S13/58 ,  G01S13/66 ,  G01S13/88 ,  G01S13/89 ,  G06F3/011

Abstract: This document describes techniques for radio frequency (RF) based micro-motion tracking. These techniques enable even millimeter-scale hand motions to be tracked. To do so, radar signals are used from radar systems that, with conventional techniques, would only permit resolutions of a centimeter or more.

公开(公告)号：US11698438B2

公开(公告)日：2023-07-11

申请号：US17488015

申请日：2021-09-28

Applicant: Google LLC

Inventor： Jaime Lien ,  Nicholas Edward Gillian ,  Ivan Poupyrev

IPC: G09G5/00 ,  G01S7/41 ,  G01S13/56 ,  G01S13/86 ,  H04Q9/00 ,  G01S13/88 ,  G06F21/32 ,  G06F3/04815 ,  G01S7/40 ,  H04W4/80 ,  G06N20/00 ,  H04W16/28 ,  G01S13/90 ,  G06V20/64 ,  G06V40/20 ,  G06F18/25 ,  G06F18/28 ,  G06F18/40 ,  G06F18/21 ,  G06V10/80 ,  G06F16/245 ,  G06F3/01 ,  G06F21/62 ,  A63F13/21 ,  A63F13/24 ,  G01S13/66 ,  G08C17/02 ,  G06T7/73 ,  G01S13/931 ,  G06F1/16 ,  G06F3/0484 ,  G01S19/42 ,  G06F3/0346 ,  G06F3/16

CPC classification number: G01S7/415 ,  A63F13/21 ,  A63F13/24 ,  G01S7/4004 ,  G01S7/41 ,  G01S7/412 ,  G01S13/56 ,  G01S13/66 ,  G01S13/86 ,  G01S13/867 ,  G01S13/88 ,  G01S13/888 ,  G01S13/90 ,  G01S13/904 ,  G06F3/011 ,  G06F3/017 ,  G06F3/04815 ,  G06F16/245 ,  G06F18/217 ,  G06F18/25 ,  G06F18/253 ,  G06F18/28 ,  G06F18/41 ,  G06F21/32 ,  G06F21/6245 ,  G06N20/00 ,  G06V10/806 ,  G06V20/64 ,  G06V40/28 ,  H04Q9/00 ,  H04W4/80 ,  H04W16/28 ,  A63F2300/8082 ,  G01S13/865 ,  G01S13/931 ,  G01S19/42 ,  G01S2013/9322 ,  G06F1/163 ,  G06F3/0346 ,  G06F3/0484 ,  G06F3/165 ,  G06F2203/0384 ,  G06F2221/2105 ,  G06T7/75 ,  G08C17/02 ,  G08C2201/93 ,  H04Q2209/883

Abstract: Various embodiments wirelessly detect micro gestures using multiple antenna of a gesture sensor device. At times, the gesture sensor device transmits multiple outgoing radio frequency (RF) signals, each outgoing RF signal transmitted via a respective antenna of the gesture sensor device. The outgoing RF signals are configured to help capture information that can be used to identify micro-gestures performed by a hand. The gesture sensor device captures incoming RF signals generated by the outgoing RF signals reflecting off of the hand, and then analyzes the incoming RF signals to identify the micro-gesture.

公开(公告)号：US11598844B2

公开(公告)日：2023-03-07

申请号：US16993098

申请日：2020-08-13

Applicant: Google LLC

Inventor： Jaime Lien ,  Changzhan Gu

IPC: G01S7/03 ,  G01S13/58 ,  G01S13/34 ,  H04W88/06 ,  G01S7/28 ,  G01S7/285 ,  G01S7/35 ,  G01S13/06 ,  H04B1/44 ,  H04L5/14 ,  G01S13/02

Abstract: Techniques and apparatuses are described that enable full-duplex operation for radar sensing using a wireless communication chipset. A controller initializes or controls connections between one or more transceivers and antennas in the wireless communication chipset. This enables the wireless communication chipset to be used as a continuous-wave radar or a pulse-Doppler radar. By utilizing these techniques, the wireless communication chipset can be re-purposed or used for wireless communication or radar sensing.

公开(公告)号：US20220091658A1

公开(公告)日：2022-03-24

申请号：US17526368

申请日：2021-11-15

Applicant: Google LLC

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

IPC: G06F1/3231 ,  G01S7/40 ,  G01S13/56 ,  G06F1/3234 ,  G06F3/01

Abstract: This document describes techniques and systems that enable a mobile device-based radar system for applying different power modes to a multi-mode interface. The techniques and systems include a user device having a radar system, and an interaction manager. The radar system generates a radar field, provides radar data, and operates at one of various different radar-power states. The user device analyzes the radar data to detect a presence or movement of a user within the radar field. Responsive to the detection, the radar system changes from a first radar-power state to a second radar-power state. Based on this change, the interaction manager selects a power mode, for a multi-mode interface, that corresponds to the second radar-power state, and applies the selected power mode to the multi-mode interface to provide a corresponding display via a display device.

公开(公告)号：US20220066568A1

公开(公告)日：2022-03-03

申请号：US17523051

申请日：2021-11-10

Applicant: Google LLC

Inventor： Jaime Lien ,  Nicholas Edward Gillian ,  Ivan Poupyrev

IPC: G06F3/01 ,  G01S7/41 ,  G01S13/56 ,  G01S13/86 ,  H04Q9/00 ,  G06K9/00 ,  G06K9/62 ,  G01S13/88 ,  G06F21/32 ,  G06F3/0481 ,  G01S7/40 ,  H04W4/80 ,  G06N20/00 ,  H04W16/28 ,  G01S13/90 ,  G06F16/245 ,  G06F21/62 ,  A63F13/21 ,  A63F13/24 ,  G01S13/66

Abstract: Various embodiments wirelessly detect micro gestures using multiple antenna of a gesture sensor device. At times, the gesture sensor device transmits multiple outgoing radio frequency (RF) signals, each outgoing RF signal transmitted via a respective antenna of the gesture sensor device. The outgoing RF signals are configured to help capture information that can be used to identify micro-gestures performed by a hand. The gesture sensor device captures incoming RF signals generated by the outgoing RF signals reflecting off of the hand, and then analyzes the incoming RF signals to identify the micro-gesture.

公开(公告)号：US20220057476A1

公开(公告)日：2022-02-24

申请号：US17410497

申请日：2021-08-24

Applicant: Google LLC

Inventor： Luzhou Xu ,  Jiang Zhu ,  Jaime Lien ,  David J. Weber

IPC: G01S7/02 ,  G01S13/87 ,  G01S13/30

Abstract: Techniques and apparatuses are described that implement electromagnetic vector sensors (EMVS) for a smart-device-based radar system. Instead of including an antenna array of similar antenna elements, the radar system includes two or more electromagnetic vector sensors. At least one of the electromagnetic vector sensors is used for transmission and at least another of the electromagnetic vector sensors is used for reception. Each electromagnetic vector sensor includes a group of antennas with different antenna patterns, orientations, and/or polarizations. An overall footprint of the two electromagnetic vector sensors (e.g., one for transmission and one for reception) can be smaller than antenna arrays used by other radar systems, thereby enabling the radar system to be implemented within space-constrained devices.

公开(公告)号：US11132065B2

公开(公告)日：2021-09-28

申请号：US16503234

申请日：2019-07-03

Applicant: Google LLC

Inventor： Nicholas Edward Gillian ,  Carsten C. Schwesig ,  Jaime Lien ,  Patrick M. Amihood ,  Ivan Poupyrev

IPC: G06F3/01 ,  G01S7/41 ,  G01S13/56 ,  G01S13/86 ,  H04Q9/00 ,  G06K9/00 ,  G06K9/62 ,  G01S13/88 ,  G06F21/32 ,  G06F3/0481 ,  G01S7/40 ,  H04W4/80 ,  G06N20/00 ,  H04W16/28 ,  G01S13/90 ,  G06F16/245 ,  G06F21/62 ,  A63F13/21 ,  A63F13/24 ,  G01S13/66 ,  G08C17/02 ,  G06T7/73 ,  G01S13/931 ,  G06F1/16 ,  G06F3/0484 ,  G01S19/42 ,  G06F3/0346 ,  G06F3/16

Abstract: This document describes apparatuses and techniques for radar-enabled sensor fusion. In some aspects, a radar field is provided and reflection signals that correspond to a target in the radar field are received. The reflection signals are transformed to provide radar data, from which a radar feature indicating a physical characteristic of the target is extracted. Based on the radar features, a sensor is activated to provide supplemental sensor data associated with the physical characteristic. The radar feature is then augmented with the supplemental sensor data to enhance the radar feature, such as by increasing an accuracy or resolution of the radar feature. By so doing, performance of sensor-based applications, which rely on the enhanced radar features, can be improved.

公开(公告)号：US20210156985A1

公开(公告)日：2021-05-27

申请号：US17164637

申请日：2021-02-01

Applicant: Google LLC

Inventor： Jaime Lien ,  Octavio Ponce Madrigal ,  Patrick M. Amihood

IPC: G01S13/42 ,  G01S7/41

Abstract: Techniques and apparatuses are described for radar angular ambiguity resolution. These techniques enable a target's angular position to be determined from a spatial response that has multiple amplitude peaks. Instead of solely considering which peak has a highest amplitude, the techniques for radar angular ambiguity resolution select a frequency sub-spectrum, or multiple frequency sub-spectrums, that emphasize amplitude or phase differences in the spatial response and analyze an irregular shape of the spatial response across a wide field of view to determine the target's angular position. In this way, each angular position of the target has a unique signature, which the radar system can determine and use to resolve the angular ambiguities. Using these techniques, the radar can have an antenna array element spacing that is greater than half a center wavelength of a reflected radar signal that is used to detect the target.