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  • METHOD AND APPARATUS FOR EFFICIENT COMMUNICATION WITH IMPLANTABLE DEVICES
    Publication number: 20210399765
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Application
    Filed: May 11, 2021
    Publication date: December 23, 2021
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • METHOD AND APPARATUS FOR EFFICIENT COMMUNICATION WITH IMPLANTABLE DEVICES
    Publication number: 20230239005
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Application
    Filed: August 23, 2022
    Publication date: July 27, 2023
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • Wearable Nystagmus Detection Devices and Methods for Using the Same
    Publication number: 20230018876
    Abstract: Wearable nystagmus detection devices are provided. The wearable device comprises first and second sensors configured to sense eye movement of the subject, and circuitry operably coupled to the sensors and configured to detect horizontal and vertical eye movements based on signals from the first and second sensors and/or a transmitter configured to transmit signals sensed by the first and second sensors to remote circuitry configured to receive signals transmitted by the transmitter and to detect horizontal and vertical eye movement based on signals from the first and second sensors. Also provided are systems and kits that include the devices, as well as methods for using devices and systems to monitor eye movement of a subject. The devices, systems, methods and kits find use in a variety of different applications.
    Type: Application
    Filed: January 4, 2021
    Publication date: January 19, 2023
    Inventors: Ryan Kazuo Ressmeyer, Peter Luke Santa Maria, Po Hung Kuo, Michael Paul Silvernagel, Ada S.Y. Poon, Kristen K. Steenerson, Stephen Kargotich, Danyang Fan, Jay Dhuldhoya
  • METHOD AND APPARATUS FOR EFFICIENT COMMUNICATION WITH IMPLANTABLE DEVICES
    Publication number: 20180083668
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Application
    Filed: September 29, 2017
    Publication date: March 22, 2018
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Michael Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • METHOD AND APPARATUS FOR EFFICIENT COMMUNICATION WITH IMPLANTABLE DEVICES
    Publication number: 20200204209
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Application
    Filed: August 2, 2019
    Publication date: June 25, 2020
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • Wireless detection coil system
    Patent number: 10690735
    Abstract: In certain embodiments, a coil circuitry component may be configured to detect RF signals from excited spins of at least a region of an organism, where the coil circuitry component comprises a RF detection coil and a detuning circuit for detuning the RF detection coil. A coil signal detection component may be configured to extract at least some of the RF signals detected by the coil circuitry component and to convert the extracted RF signals from analog signal to digital signals. An excitation estimation component may be configured to estimate the excitation pulses from an excitation source and to generate a control timing signal from the estimated excitation pulses to set a state of the detuning circuit. A wireless communication component may be configured to wirelessly transmit the converted RF signals, the estimated excitation pulses, and the control timing signal to an external computer system.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: June 23, 2020
    Assignee: Aivitae LLC
    Inventors: Bob Sueh-chien Hu, Ada Shuk-Yan Poon
  • PLANAR IMMERSION LENS WITH METASURFACES
    Publication number: 20170250577
    Abstract: A planar immersion lens can include any number of features. A planar immersion lens can be configured to control a phase profile of an incident wave by modulating the incident wave with sub-wavelength structures of varying impedances. The planar immersion lens can also be directly excited, with electronics or other subwavelength sources coupled to the planar immersion lens, to generate a wave with the desired phase profile. The planar immersion lens can include a plurality of metallic elements and passive elements disposed over a substrate. The passive elements can be selected, based on both the intrinsic and mutual impedances of the elements, to shape the spatial phase profile of the incident wave within this phase range. The phase gradient can be introduced along the incident material/refractive material interface to focus the incident wave into the refractive material having wave components at or beyond the critical angle. Methods are also provided.
    Type: Application
    Filed: September 28, 2015
    Publication date: August 31, 2017
    Inventors: John S. Y. HO, Ada Shuk Yan POON
  • Method and apparatus for efficient communication with implantable devices
    Patent number: 11451265
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: September 20, 2022
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • Method and apparatus for efficient communication with implantable devices
    Patent number: 10411760
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: September 10, 2019
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Michael Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • Method and apparatus for efficient communication with implantable devices
    Patent number: 11018721
    Abstract: Described herein are methods of making and using and apparatus for wirelessly communicating data and providing power, particularly from a location exterior to a body and to an implantable device disposed within a body with tissue. The described embodiments provide apparatus and methods for efficiently transfer data and power between an external transceiver and an (implanted) biomedical device. The method is to modulate power carrier, which wirelessly powers the device, using an asynchronous modulation scheme, such as amplitude shift keying (ASK) modulation, with minimal modulation depth in order to not disrupt the power flow. The digital data is encoded in the pulse width, eliminating the need for synchronization to the power carrier signal and further minimizing the power consumption necessary for data transfer. Additionally, a reverse backscatter method for obtaining data from the implant is described that has flexible, low power operation.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: May 25, 2021
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Anatoly Anatolievich Yakovlev, Daniel Pivonka, Ada Shuk Yan Poon, Teresa H. Meng
  • Planar immersion lens with metasurfaces
    Patent number: 10594166
    Abstract: A planar immersion lens can include any number of features. A planar immersion lens can be configured to control a phase profile of an incident wave by modulating the incident wave with sub-wavelength structures of varying impedances. The planar immersion lens can also be directly excited, with electronics or other subwavelength sources coupled to the planar immersion lens, to generate a wave with the desired phase profile. The planar immersion lens can include a plurality of metallic elements and passive elements disposed over a substrate. The passive elements can be selected, based on both the intrinsic and mutual impedances of the elements, to shape the spatial phase profile of the incident wave within this phase range. The phase gradient can be introduced along the incident material/refractive material interface to focus the incident wave into the refractive material having wave components at or beyond the critical angle. Methods are also provided.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: March 17, 2020
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: John S. Y. Ho, Ada Shuk Yan Poon
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