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公开(公告)号：US10795009B2
公开(公告)日：2020-10-06
申请号：US15928273
申请日：2018-03-22
Applicant: Google LLC
Inventor： Jaime Lien , Changzhan Gu
Abstract: Techniques and apparatuses are described that enable digital beamforming for radar sensing using a wireless communication chipset. A controller initializes or causes the wireless communication chipset to use multiple receiver chains to receive a radar signal that is reflected by a target. A digital beamformer obtains baseband data from the wireless communication chipset and generates a spatial response, which may be used to determine an angular position of the target. The controller can further select which antennas are used for receiving the radar signal. In this way, the controller can further optimize the wireless communication chipset for digital beamforming. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.
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公开(公告)号：US20180348339A1
公开(公告)日：2018-12-06
申请号：US15928386
申请日：2018-03-22
Applicant: Google LLC
Inventor： Jaime Lien , Changzhan Gu , Erik M. Olson
IPC: G01S7/00
Abstract: Techniques and apparatuses are described that enable radar modulations for radar sensing using a wireless communication chipset. A controller initializes or controls modulations performed by the wireless communication chipset. In this way, the controller can enable the wireless communication chipset to perform modulations for wireless communication or radar sensing. In some cases, the controller can further select a wireless communication channel for setting a frequency and a bandwidth of a radar signal, thereby avoiding interference between multiple radar signals or between the radar signal and a communication signal. In other cases, the controller can cause the wireless communication chipset to modulate a signal containing communication data using a radar modulation. This enables another device that receives the signal to perform wireless communication or radar sensing. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.
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公开(公告)号：US20220031172A1
公开(公告)日：2022-02-03
申请号：US17299271
申请日：2018-12-24
Applicant: Google LLC
Inventor： Yuchu He , Jiang Zhu , Changzhan Gu , Haijiang Ma
IPC: A61B5/0205 , G01S7/02 , G01S7/35
Abstract: Techniques and apparatuses are described that implement a smart device-based radar system capable of detecting human vital signs using a compact circularly-polarized antenna. A radar system includes at least one compact circularly-polarized antenna with a patch antenna and a quadrature hybrid coupler. The quadrature hybrid coupler is on a separate plane that is above or below the patch antenna. By vertically stacking the patch antenna with the quadrature hybrid coupler, lateral dimensions of the radar system can be reduced relative to other antenna configurations or designs. The quadrature hybrid coupler can also have a ring-shape design to improve isolation and polarization purity of the compact circularly-polarized antenna relative to a rectangular design. The compact circularly-polarized antenna enables a radar system operating at frequencies between approximately 1 gigahertz (GHz) and 24 GHz to be implemented within a variety of small smart devices.
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公开(公告)号：US10754005B2
公开(公告)日：2020-08-25
申请号：US15928386
申请日：2018-03-22
Applicant: Google LLC
Inventor： Jaime Lien , Changzhan Gu , Erik M. Olson
Abstract: Techniques and apparatuses are described that enable radar modulations for radar sensing using a wireless communication chipset. A controller initializes or controls modulations performed by the wireless communication chipset. In this way, the controller can enable the wireless communication chipset to perform modulations for wireless communication or radar sensing. In some cases, the controller can further select a wireless communication channel for setting a frequency and a bandwidth of a radar signal, thereby avoiding interference between multiple radar signals or between the radar signal and a communication signal. In other cases, the controller can cause the wireless communication chipset to modulate a signal containing communication data using a radar modulation. This enables another device that receives the signal to perform wireless communication or radar sensing. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.
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公开(公告)号：US20190356977A1
公开(公告)日：2019-11-21
申请号：US15980059
申请日：2018-05-15
Applicant: Google LLC
Inventor： Leng Ooi , Changzhan Gu , Jae-won Hwang
IPC: H04R1/10
Abstract: Methods, systems, and devices for enhanced digital headsets are disclosed. An enhanced USB-C headset includes a USB-C connector, a cable extending from the USB-C connector, an inline control box coupled to the USB-C connector through the cable, and a first earphone and a second earphone. The cable includes conductors for transmitting DC bus power, power return, and differential digital signals and extends at least one foot in length. The control box includes a single circuit board, with circuitry for managing digital communications, converting audio data, and providing output signals to drive analog speaker elements of the earphones.
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Patent Agency Ranking
公开(公告)号：US20230204754A1
公开(公告)日：2023-06-29
申请号：US18175753
申请日：2023-02-28
Applicant: Google LLC
Inventor： Changzhan Gu , Jaime Lien , Nicholas Edward Gillian , Jian Wang
CPC classification number: G01S13/584 , G01S7/417 , G01S7/4808 , G01S13/08 , G01S13/62 , G06F3/017
Abstract: Techniques and apparatuses are described that implement a smart-device-based radar system capable of detecting user gestures in the presence of saturation. In particular, a radar system employs machine learning to compensate for distortions resulting from saturation. This enables gesture recognition to be performed while the radar system's receiver is saturated. As such, the radar system can forgo integrating an automatic gain control circuit to prevent the receiver from becoming saturated. Furthermore, the radar system can operate with higher gains to increasing sensitivity without adding additional antennas. By using machine learning, the radar system's dynamic range increases, which enables the radar system to detect a variety of different types of gestures having small or large radar cross sections, and performed at various distances from the radar system.
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公开(公告)号：US11079470B2
公开(公告)日：2021-08-03
申请号：US16929762
申请日：2020-07-15
Applicant: Google LLC
Inventor： Jaime Lien , Changzhan Gu , Erik M. Olson
Abstract: Techniques and apparatuses are described that enable radar modulations for radar sensing using a wireless communication chipset. A controller initializes or controls modulations performed by the wireless communication chipset. In this way, the controller can enable the wireless communication chipset to perform modulations for wireless communication or radar sensing. In some cases, the controller can further select a wireless communication channel for setting a frequency and a bandwidth of a radar signal, thereby avoiding interference between multiple radar signals or between the radar signal and a communication signal. In other cases, the controller can cause the wireless communication chipset to modulate a signal containing communication data using a radar modulation. This enables another device that receives the signal to perform wireless communication or radar sensing. By utilizing these techniques, the wireless communication chipset can be used for wireless communication or radar sensing.
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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.
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公开(公告)号：US20200221208A1
公开(公告)日：2020-07-09
申请号：US16238882
申请日：2019-01-03
Applicant: Google LLC
Inventor： Changzhan Gu , Jae-won Hwang
Abstract: In some implementations, a headphone device includes an earpiece housing, a speaker in the earpiece housing configured to produce audio, and a wireless charging coil having a first portion that extends outside the earpiece housing and a second portion that extends within the earpiece housing. A battery charging circuit is coupled to the wireless charging coil, and the battery charging circuit is configured to charge a battery of the headphone device based on electrical current induced in the wireless charging coil.
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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.
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