Patents by Inventor Shreyas Sen

Shreyas Sen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11387854
    Abstract: A communication interference rejection system, comprising a dual data rate (DDR) receiver operatively connected to a device connected to a body of a user. The DDR receiver is configured to receive a signal transmitted through the body of the user, with the signal comprising a relatively substantially small constant amplitude component and a relatively large sinusoidal or modulated interference component, said interference component due to human body antenna effect. The receiver integrates the signal and sample at a sampling time, with the sampling time defined as Ts=n/Finterference, wherein Finterference is the frequency of the modulated interference component and n is an integer.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: July 12, 2022
    Assignee: Purdue Research Foundation
    Inventor: Shreyas Sen
  • Patent number: 11374602
    Abstract: A communication interference rejection system comprising a receiver operatively connected to a device connected to a body of a user. The receiver is configured to receive a signal transmitted through the body of the user, the signal comprising a data component and an interference component, the interference component due to human body antenna effect. The receiver is configured to integrate the signal using a relatively low-gain analog integrator and then digitally differentiate the output of said integration.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: June 28, 2022
    Assignee: Purdue Research Foundation
    Inventors: Shreyas Sen, Shovan Maity
  • Publication number: 20220193427
    Abstract: A system and method for brain-machine interface communication utilizing Bi-Phasic Quasi-Static Brain Communication (BP-QBC). The system includes a first device and a second device that are in wireless communication together. The system and method include signal transmission between the first device and the second device through dipole coupling. The system is configured to utilize compressive sensing and collision avoidance for enhanced net energy efficiency. The system and method utilize fully electrical quasi-static signaling to militate against energy transduction losses.
    Type: Application
    Filed: December 23, 2021
    Publication date: June 23, 2022
    Applicant: Purdue Research Foundation
    Inventors: Shreyas Sen, Baibhab Chatterjee, Mayukh Nath
  • Publication number: 20210258080
    Abstract: A method of using a HBC device includes enabling electro-quasistatic communication on a transmitter, wherein the enabling electro-quasistatic communication includes receiving an activation signal through an input. The enabling the electro-quasistatic communication additionally includes transmitting a digital data signal to a transmitter logic circuit. The enabling the electro-quasistatic communication further includes modulating an electro-quasistatic carrier signal by the digital data signal using a modulator, thereby producing a modulated electro-quasistatic signal. Additionally, the enabling the electro-quasistatic communication includes transmitting the electro-quasistatic signal from the transmitter logic circuit to a general purpose input output circuit. Furthermore, the enabling the electro-quasistatic communication includes coupling the electro-quasistatic signal on a human body through an electrode, thereby enabling electro-quasistatic communication. The transmitter includes the electrode.
    Type: Application
    Filed: September 21, 2020
    Publication date: August 19, 2021
    Applicant: Purdue Research Foundation
    Inventors: Shreyas Sen, Shovan Maity
  • Patent number: 10998925
    Abstract: A communication interference rejection system comprising a relatively low-impedance voltage mode driver output which receives a signal from a sensor, the sensor near a user's skin, a receiver operatively connected to a device connected to a body of a user, wherein the receiver configured to receive a signal transmitted through the body of the user. The signal comprises a relatively substantially small constant amplitude component and a relatively large sinusoidal or modulated interference component, the interference component due to human body antenna effect, the receiver comprising a high-impedance termination to minimize channel loss, the receiver further configured to receive frequencies in the 10 KHz to 10 MHz range.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: May 4, 2021
    Assignee: Purdue Research Foundation
    Inventor: Shreyas Sen
  • Publication number: 20210111744
    Abstract: A communication interference rejection system comprising a receiver operatively connected to a device connected to a body of a user. The receiver is configured to receive a signal transmitted through the body of the user, the signal comprising a data component and an interference component, the interference component due to human body antenna effect. The receiver is configured to integrate the signal using a relatively low-gain analog integrator and then digitally differentiate the output of said integration.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 15, 2021
    Applicant: Purdue Research Foundation
    Inventors: Shreyas Sen, Shovan Maity
  • Patent number: 10873354
    Abstract: A communication interference rejection system comprising a receiver operatively connected to a device connected to a body of a user. The receiver is configured to receive a signal transmitted through the body of the user, the signal comprising a data component and an interference component, the interference component due to human body antenna effect. The receiver is configured to integrate the signal using a relatively low-gain analog integrator and then digitally differentiate the output of said integration.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: December 22, 2020
    Assignee: Purdue Research Foundation
    Inventors: Shreyas Sen, Shovan Maity
  • Publication number: 20200028532
    Abstract: A communication interference rejection system comprising a receiver operatively connected to a device connected to a body of a user. The receiver is configured to receive a signal transmitted through the body of the user, the signal comprising a data component and an interference component, the interference component due to human body antenna effect. The receiver is configured to integrate the signal using a relatively low-gain analog integrator and then digitally differentiate the output of said integration.
    Type: Application
    Filed: July 22, 2019
    Publication date: January 23, 2020
    Applicant: Purdue Research Foundation
    Inventors: Shreyas Sen, Shovan Maity
  • Publication number: 20190379414
    Abstract: A communication interference rejection system, comprising a dual data rate (DDR) receiver operatively connected to a device connected to a body of a user. The DDR receiver is configured to receive a signal transmitted through the body of the user, with the signal comprising a relatively substantially small constant amplitude component and a relatively large sinusoidal or modulated interference component, said interference component due to human body antenna effect. The receiver integrates the signal and sample at a sampling time, with the sampling time defined as Ts=n/Finterference, wherein Finterference is the frequency of the modulated interference component and n is an integer.
    Type: Application
    Filed: March 7, 2018
    Publication date: December 12, 2019
    Inventor: Shreyas Sen
  • Publication number: 20190347393
    Abstract: A communication interference rejection system comprising a relatively low-impedance voltage mode driver output which receives a signal from a sensor, the sensor near a user's skin, a receiver operatively connected to a device connected to a body of a user, wherein the receiver configured to receive a signal transmitted through the body of the user. The signal comprises a relatively substantially small constant amplitude component and a relatively large sinusoidal or modulated interference component, the interference component due to human body antenna effect, the receiver comprising a high-impedance termination to minimize channel loss, the receiver further configured to receive frequencies in the 10 KHz to 10 MHz range.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 14, 2019
    Applicant: Purdue Research Foundation
    Inventor: Shreyas Sen
  • Patent number: 9929775
    Abstract: Embodiments of the present disclosure provide apparatuses and systems for proximity communications. The apparatus may include an integrated circuit (IC) package with a central processing unit (CPU) circuit, an input-output (I/O) circuit coupled with the CPU circuit, and a dielectric electromagnetic waveguide coupled with the I/O circuit, to enable communications between the CPU circuit and another apparatus. In another instance, the apparatus may include a plurality of coupler pads disposed on a first surface of the apparatus; and a processor electrically coupled with the coupler pads. One of the coupler pads may form capacitive coupling with one of coupler pads disposed on a second surface of another apparatus, in response to a placement of the first surface in at least partial contact with the second surface, to enable proximity data communication between the processor and the other apparatus. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: March 27, 2018
    Assignee: Intel Corporation
    Inventors: Shreyas Sen, Chintan S. Thakkar, Bryan K. Casper, James E. Jaussi
  • Patent number: 9698838
    Abstract: A receiver system includes a blocker detector circuit configured to receive a radio frequency (RF) input signal and detect an existence of a blocker therein, and further configured to output a blocker detection signal indicative of the existence of the blocker. The receiver system further includes a configurable receiver circuit configured to receive the RF input signal and the blocker detection signal, and selectively configure the configurable receiver circuit between a first mode wherein the configurable receiver circuit exhibits first linearity characteristics, and a second mode wherein the configurable receiver circuit exhibits second, different linearity characteristics based on the blocker detection signal.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: July 4, 2017
    Assignee: Intel Corporation
    Inventors: Shreyas Sen, Ritesh Bhat, Yanjie Wang, Stefano Pellerano, Christopher Hull, Farhana Sheikh
  • Publication number: 20170187405
    Abstract: A receiver system includes a blocker detector circuit configured to receive a radio frequency (RF) input signal and detect an existence of a blocker therein, and further configured to output a blocker detection signal indicative of the existence of the blocker. The receiver system further includes a configurable receiver circuit configured to receive the RF input signal and the blocker detection signal, and selectively configure the configurable receiver circuit between a first mode wherein the configurable receiver circuit exhibits first linearity characteristics, and a second mode wherein the configurable receiver circuit exhibits second, different linearity characteristics based on the blocker detection signal.
    Type: Application
    Filed: December 23, 2015
    Publication date: June 29, 2017
    Inventors: Shreyas Sen, Ritesh Bhat, Yanjie Wang, Stefano Pellerano, Christopher Hull, Farhana Sheikh
  • Patent number: 9584164
    Abstract: A mixer-first receiver operates to generate filtering and analog-to-digital conversion concurrently and adaptively, while removing an LNA before a mixer to enable integration with digital baseband circuits. A plurality of switching capacitor arrays are integrated with a hybrid analog-to-digital filtering component. Switching capacitor arrays of the plurality of switching capacitor arrays can be selectively modified to perform both the filtering operation and the conversion operation together. The same switch capacitors of a switching capacitor array can be utilized in one phase of a clock cycle for the filtering and in another phase of the clock cycle for the conversion.
    Type: Grant
    Filed: February 22, 2016
    Date of Patent: February 28, 2017
    Assignee: Intel Corporation
    Inventors: Farhana Sheikh, Amy L. Whitcombe, Erkan Alpman, Yanjie Wang, Shreyas Sen
  • Patent number: 9548705
    Abstract: An amplifier having orthogonal tuning elements is provided. In one embodiment, an amplifier comprises an input amplifier stage having a first tuning element used to control a first performance criteria of the amplifier; an output amplifier stage operatively coupled to the first amplifier stage; a bias circuit operatively coupled to the second amplifier stage and having a second tuning element used to control a second performance criteria of the amplifier; and wherein the first tuning element operates substantially independent of the second tuning element.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: January 17, 2017
    Assignee: Georgia Tech Research Corporation
    Inventors: Shreyas Sen, Abhijit Chatterjee
  • Publication number: 20160285513
    Abstract: Embodiments of the present disclosure provide apparatuses and systems for proximity communications. The apparatus may include an integrated circuit (IC) package with a central processing unit (CPU) circuit, an input-output (I/O) circuit coupled with the CPU circuit, and a dielectric electromagnetic waveguide coupled with the I/O circuit, to enable communications between the CPU circuit and another apparatus. In another instance, the apparatus may include a plurality of coupler pads disposed on a first surface of the apparatus; and a processor electrically coupled with the coupler pads. One of the coupler pads may form capacitive coupling with one of coupler pads disposed on a second surface of another apparatus, in response to a placement of the first surface in at least partial contact with the second surface, to enable proximity data communication between the processor and the other apparatus. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: March 25, 2015
    Publication date: September 29, 2016
    Inventors: Shreyas Sen, Chintan S. Thakkar, Bryan K. Casper, James E. Jaussi
  • Patent number: 9455529
    Abstract: Techniques for forming high-bandwidth proximity connection between capacitively coupled plug and receptacle are described herein. A system for achieving capacitive coupling between contactless pads is described. The techniques include aligning and retaining the plug and receptacle in close proximity to one another. The techniques include cancelling crosstalk in the system based on the symmetry and orientation of differential pairs comprising signal pads. The techniques include enabling a high-bandwidth proximity transmission by filtering the transmission using a silicon buffer component.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: September 27, 2016
    Assignee: Intel Corporation
    Inventors: Shreyas Sen, Chintan S. Thakkar, James E. Jaussi, Bryan K. Casper
  • Publication number: 20160099683
    Abstract: An amplifier having orthogonal tuning elements is provided. In one embodiment, an amplifier comprises an input amplifier stage having a first tuning element used to control a first performance criteria of the amplifier; an output amplifier stage operatively coupled to the first amplifier stage; a bias circuit operatively coupled to the second amplifier stage and having a second tuning element used to control a second performance criteria of the amplifier; and wherein the first tuning element operates substantially independent of the second tuning element.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 7, 2016
    Applicant: Georgia Tech Research Corporation
    Inventors: Shreyas Sen, Abhijit Chatterjee
  • Publication number: 20150340814
    Abstract: Techniques for forming high-bandwidth proximity connection between capacitively coupled plug and receptacle are described herein. A system for achieving capacitive coupling between contactless pads is described. The techniques include aligning and retaining the plug and receptacle in close proximity to one another. The techniques include cancelling crosstalk in the system based on the symmetry and orientation of differential pairs comprising signal pads. The techniques include enabling a high-bandwidth proximity transmission by filtering the transmission using a silicon buffer component.
    Type: Application
    Filed: May 23, 2014
    Publication date: November 26, 2015
    Inventors: JAMES E. JAUSSI, BRYAN K. CASPER, SHREYAS SEN, CHINTAN S. THAKKAR
  • Patent number: 8983390
    Abstract: The various embodiments of the present disclosure relate generally to power-conscious self-healing transceiver systems and methods. An embodiment of the present invention provides a method of power-consciously self-healing a transceiver system. The method comprises providing a transceiver device having a plurality of tuning elements configured to control a plurality of specifications of the device, determining initial values for the plurality of tuning elements, and performing a hardware-iterative gradient search to obtain values for each tuning element such that the plurality of specifications are within a tolerated range.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: March 17, 2015
    Assignee: Georgia Tech Research Corporation
    Inventors: Abhijit Chatterjee, Shreyas Sen, Shyam Kumar Devarakond, Vishwanath Natarajan