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公开(公告)号：US20240337746A1
公开(公告)日：2024-10-10
申请号：US18747691
申请日：2024-06-19
Applicant: Google LLC
Inventor： Patrick M. Amihood , Octavio Ponce Madrigal
Abstract: 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.
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公开(公告)号：US11693104B2
公开(公告)日：2023-07-04
申请号：US17164637
申请日：2021-02-01
Applicant: Google LLC
Inventor： Jaime Lien , Octavio Ponce Madrigal , Patrick M. Amihood
CPC classification number: G01S13/426 , G01S7/412 , G01S13/422 , G01S2013/0254
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.
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公开(公告)号：US12038498B2
公开(公告)日：2024-07-16
申请号：US17349597
申请日：2021-06-16
Applicant: Google LLC
Inventor： Patrick M. Amihood , Octavio Ponce Madrigal
Abstract: 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.
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公开(公告)号：US20230126062A1
公开(公告)日：2023-04-27
申请号：US17929991
申请日：2022-09-06
Applicant: Google LLC
Inventor： Octavio Ponce Madrigal , Anton Heistser , Patrick M. Amihood
Abstract: 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.
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公开(公告)号：US10935651B2
公开(公告)日：2021-03-02
申请号：US15844460
申请日：2017-12-15
Applicant: Google LLC
Inventor： Jaime Lien , Octavio Ponce Madrigal , Patrick M. Amihood
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.
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Patent Agency Ranking
公开(公告)号：US20240221429A1
公开(公告)日：2024-07-04
申请号：US17905760
申请日：2021-05-19
Applicant: Google LLC
Inventor： Octavio Ponce Madrigal , Patrick M. Amihood
Abstract: Techniques and apparatuses are described that implement pattern recognition for face-authentication anti-spoofing. In particular, a face-authentication system distinguishes between a real human face and a presentation attack that uses a display to present a virtual human face. Operational settings of a camera system of the face-authentication system are tailored to enable detection of a pattern associated with an operation of the display. A spoofing detector of the face-authentication system analyzes one or more images captured by the camera system and determines whether or not the pattern is present within the image(s). If the pattern is present, the face-authentication system does not provide face authentication. Alternatively, if the pattern is not present, the face-authentication system can provide face authentication if facial recognition is successful. In this way, the face-authentication system can prevent unauthorized actors from using the presentation attack to gain access to a user's account or information.
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公开(公告)号：US20240205326A1
公开(公告)日：2024-06-20
申请号：US18556047
申请日：2021-05-28
Applicant: Google LLC
Inventor： Patrick M. Amihood , Octavio Ponce Madrigal , Anton Heistser
IPC: H04M1/72454 , H04M1/60
CPC classification number: H04M1/72454 , H04M1/6008 , H04M1/6016 , H04M2250/12
Abstract: Techniques and apparatuses are described that implement hand-grip location detection using ultrasound. In particular, an ultrasonic sensor determines a location that a user's hand grips a user device. While gripping the user device, the hand creates an additional aperture area, which amplifies ultrasonic signals that are received by one or more transducers of the ultrasonic sensor that are proximate to the user's hand. By analyzing the amplitude (or power) of received ultrasonic signals, the ultrasonic sensor can detect if the user's hand is proximate to a particular transducer. In some implementations, the ultrasonic sensor utilizes speakers and/or microphones that are present within the user device. In this way, the ultrasonic sensor can have a relatively small footprint and fit within space-constrained devices.
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公开(公告)号：US20230228842A1
公开(公告)日：2023-07-20
申请号：US18010861
申请日：2021-06-15
Applicant: Google LLC
Inventor： Patrick M. Amihood , Octavio Ponce Madrigal , Cody Blair Wortham
CPC classification number: G01S7/03 , G01S13/003 , G01S7/415 , G06F3/017
Abstract: Techniques and apparatuses are described that implement a distributed radar system. The distributed radar system includes two or more radar front-end circuits and at least one processor. The radar front-end circuits are distributed within a device at different positions. By partitioning antennas and transceivers across multiple radar front-end circuits instead of consolidating into a single integrated circuit, individual radar front-end circuits can have a smaller footprint than the single integrated circuit. This smaller footprint enables the radar front-end circuits to be integrated within space-constrained devices. The smaller footprint also provides additional flexibility in positioning the radar front-end circuits away from other components within the device that can cause interference. This can reduce the amount of interference seen by the distributed radar system.
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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
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.
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公开(公告)号：US12000929B2
公开(公告)日：2024-06-04
申请号：US17639545
申请日：2020-12-23
Applicant: Google LLC
Inventor： Octavio Ponce Madrigal , Patrick M. Amihood
Abstract: Techniques and apparatuses are described that implement an ultrasonic sensor capable of detecting user presence. This ultrasonic sensor can detect user presence without relying on time-of-flight techniques. In particular, the ultrasonic sensor can determine that a user is present based on the occlusion of at least one receiving transducer (e.g., microphone occlusion), the occlusion of at least one transmitting transducer (e.g., speaker occlusion), or a detected change in an audible noise floor of at least one transducer. In this way, the ultrasonic sensor can continue to detect user presence in situations in which a user occludes one or more transducers of the ultrasonic sensor. The ultrasonic sensor can also control operation of another component within a computing device based on the presence of the user to improve the user experience and/or improve power management.
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