Patents by Inventor Alberto Escolar-Piedras

Alberto Escolar-Piedras 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).

  • Publication number: 20230283968
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Application
    Filed: May 12, 2023
    Publication date: September 7, 2023
    Applicant: Oticon A/S
    Inventors: Vijay Kumar BHAT, Poul HENRIKSEN, Alberto Escolar PIEDRAS
  • Patent number: 11711656
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: July 25, 2023
    Assignee: Oticon A/S
    Inventors: Vijay Kumar Bhat, Poul Henriksen, Alberto Escolar Piedras
  • Publication number: 20220046367
    Abstract: A hearing aid system is configured for managing the power of a wireless link. The hearing aid system includes a first hearing aid device and a mobile device, each of the devices including a transmit and receive unit for establishing a short range wireless link between the devices. At least one of the devices includes: a microphone configured to receive an acoustical audio signal; a signal processor configured to process an audio signal based on the acoustical audio signal; and first link quality estimating circuitry configured to determine rate of change of a link quality signal. The at least one of the devices is configured to transmit the link quality signal to the other device, and the other device is configured to determine a power level of transmission of an information packet based on the rate of change of the link quality signal via a power controller comprised by the other device.
    Type: Application
    Filed: October 25, 2021
    Publication date: February 10, 2022
    Applicant: Oticon A/S
    Inventors: Alberto Escolar PIEDRAS, Peter Søren Kirk HANSEN
  • Patent number: 11197108
    Abstract: A hearing aid system is configured for managing the power of a wireless link. The hearing aid system includes a first hearing aid device and a mobile device, each of the devices including a transmit and receive unit for establishing a short range wireless link between the devices. At least one of the devices includes: a microphone configured to receive an acoustical audio signal; a signal processor configured to process an audio signal based on the acoustical audio signal; and first link quality estimating circuitry configured to determine rate of change of a link quality signal. The at least one of the devices is configured to transmit the link quality signal to the other device, and the other device is configured to determine a power level of transmission of an information packet based on the rate of change of the link quality signal via a power controller comprised by the other device.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: December 7, 2021
    Assignee: OTICON A/S
    Inventors: Alberto Escolar Piedras, Peter Søren Kirk Hansen
  • Publication number: 20210337321
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Application
    Filed: June 29, 2021
    Publication date: October 28, 2021
    Applicant: Oticon A/S
    Inventors: Vijay Kumar BHAT, Poul HENRIKSEN, Alberto Escolar PIEDRAS
  • Patent number: 11082776
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: August 3, 2021
    Assignee: Oticon A/S
    Inventors: Vijay Kumar Bhat, Poul Henriksen, Alberto Escolar Piedras
  • Publication number: 20200236476
    Abstract: A hearing aid system is configured for managing the power of a wireless link. The hearing aid system includes a first hearing aid device and a mobile device, each of the devices including a transmit and receive unit for establishing a short range wireless link between the devices. At least one of the devices includes: a microphone configured to receive an acoustical audio signal; a signal processor configured to process an audio signal based on the acoustical audio signal; and first link quality estimating circuitry configured to determine rate of change of a link quality signal. The at least one of the devices is configured to transmit the link quality signal to the other device, and the other device is configured to determine a power level of transmission of an information packet based on the rate of change of the link quality signal via a power controller comprised by the other device.
    Type: Application
    Filed: April 6, 2020
    Publication date: July 23, 2020
    Applicant: Oticon A/S
    Inventors: Alberto Escolar PIEDRAS, Peter Søren Kirk HANSEN
  • Publication number: 20200213778
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: Oticon A/S
    Inventors: Vijay Kumar BHAT, Poul HENRIKSEN, Alberto Escolar PIEDRAS
  • Patent number: 10652675
    Abstract: The present disclosure relates to a hearing aid system which is configured to power managing the power of a wireless link. The hearing aid system comprising a first hearing aid device and a mobile device, wherein each of the devices comprising a transmit unit and a receive unit for establishing a short range wireless link between the devices.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: May 12, 2020
    Assignee: OTICON A/S
    Inventors: Alberto Escolar Piedras, Peter Søren Kirk Hansen
  • Patent number: 10560787
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: February 11, 2020
    Assignee: OTICON A/S
    Inventors: Vijay Kumar Bhat, Poul Henriksen, Alberto Escolar Piedras
  • Publication number: 20190075408
    Abstract: The present disclosure relates to a hearing aid system which is configured to power managing the power of a wireless link. The hearing aid system comprising a first hearing aid device and a mobile device, wherein each of the devices comprising a transmit unit and a receive unit for establishing a short range wireless link between the devices.
    Type: Application
    Filed: September 6, 2018
    Publication date: March 7, 2019
    Applicant: Oticon A/S
    Inventors: Alberto Escolar PIEDRAS, Peter Søren Kirk HANSEN
  • Publication number: 20180124524
    Abstract: The disclosure presents a method and an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier, comprising a battery for providing a supply voltage to the amplifier, a digital signal processor for providing the acoustical signal to the amplifier, a controller unit receiving an enablement signal when the supply voltage is in an offset mode, and based on the enablement signal requesting a measured voltage during a time period, and a first analog-to-digital converter configured for measuring the supply voltage to the amplifier when receiving the request from the controller unit or the first analog-to-digital converter is configured for measuring the supply voltage to the amplifier continuously, and where variations in the measured voltage relates to variations in the supply voltage during the time period. Furthermore, the controller unit is configured to predict offset modes (i.e.
    Type: Application
    Filed: October 30, 2017
    Publication date: May 3, 2018
    Applicant: Oticon A/S
    Inventors: Vijay Kumar BHAT, Poul HENRIKSEN, Alberto Escolar PIEDRAS
  • Patent number: 8447327
    Abstract: In accordance with an example embodiment of the present invention, a method comprises receiving a plurality of reference signals (RS) from a plurality of nearby cells over a positioning time window comprising a plurality of positioning occasions; grouping the received reference signals into a set of RS groups based on a time difference between a minimum expected RS time difference (RSTD) and a maximum expected RS time difference of the received signals; buffering a subset of the set of RS groups of the received reference signals in a RS buffer whose size is based at least in part on a buffering margin and is smaller than a maximum possible time difference; measuring the buffered reference signals; and generating an observed time difference of arrival (OTDOA) report based on the buffered subset of the set of RS groups of the received reference signals.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 21, 2013
    Assignee: Nokia Corporation
    Inventors: Alberto Escolar-Piedras, Jorma Johannes Kaikkonen
  • Patent number: 8331468
    Abstract: An apparatus and method for inserting a cyclic postfix for a time-rotated symbol in a communication system. In one embodiment, the apparatus includes a time pre-rotation module configured to time shift bits of at least one of ending samples of a symbol to a beginning of the symbol to form a time-rotated symbol. The apparatus also includes an interpolator configured to construct an up-sampled symbol from the time-rotated symbol and a cyclic postfix module configured to insert a cyclic postfix at an end of the up-sampled symbol to form an expanded up-sampled symbol.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: December 11, 2012
    Assignee: Nokia Corporation
    Inventor: Alberto Escolar-Piedras
  • Patent number: 8233911
    Abstract: A method and apparatus are provided for timed estimation-based positioning of a user equipment in LTE systems. The method includes estimating, by a mobile node, a plurality of reference signal time differences (RSTD) between the mobile node and a network node. The plurality of RSTD estimates define a first correlator. The method further includes determining a second correlator of RSTD estimates, and defining the second correlator with the first correlator based on a mean of the plurality of RSTD estimates. Further, the method includes determining a distribution of the plurality of RSTD estimates, and grouping clusters of RSTD estimates in the distribution. Additionally, the method includes selecting a cluster from the clusters of RSTD estimates. The cluster includes RSTD estimates closest to a center of the second correlator. The cluster is transmitted, by the mobile node, to the network node for positioning the mobile node in a communications network.
    Type: Grant
    Filed: December 16, 2009
    Date of Patent: July 31, 2012
    Assignee: Nokia Corporation
    Inventors: Gilles Charbit, Alberto Escolar-Piedras
  • Publication number: 20120040685
    Abstract: In accordance with an example embodiment of the present invention, a method comprises receiving a plurality of reference signals (RS) from a plurality of nearby cells over a positioning time window comprising a plurality of positioning occasions; grouping the received reference signals into a set of RS groups based on a time difference between a minimum expected RS time difference (RSTD) and a maximum expected RS time difference of the received signals; buffering a subset of the set of RS groups of the received reference signals in a RS buffer whose size is based at least in part on a buffering margin and is smaller than a maximum possible time difference; measuring the buffered reference signals; and generating an observed time difference of arrival (OTDOA) report based on the buffered subset of the set of RS groups of the received reference signals.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 16, 2012
    Applicant: NOKIA CORPORATION
    Inventors: Alberto Escolar-Piedras, Jorma Kaikkonen
  • Publication number: 20110275385
    Abstract: Systems and methods for providing improved location such as emergency services location of mobile devices in an over the air communications system are disclosed. On receiving a request, a user equipment (UE) mobile device makes observed time difference of arrival (OTDOA) measurements on signals received from certain cell communication elements. The UE selects or prioritizes the cells based on one of several schemes, including comparing internally stored cell ID information to cell ID information provided by the network, and using lists of cells that are recently used, recently received, previously used, or on a closed subscriber group (CSG) list are alternative embodiments. The UE may prioritize home eNB cells that it is a member of for the measurements. By prioritizing the cells used for the measurements, the OTDOA measurements may be limited to a few cells and the time needed to make the measurements may be reduced.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 10, 2011
    Applicant: Nokia Corporation
    Inventors: Alberto Escolar-Piedras, Mika Ventola, Gilles Charbit
  • Publication number: 20110143770
    Abstract: A method and apparatus are provided for timed estimation-based positioning of a user equipment in LTE systems. The method includes estimating, by a mobile node, a plurality of reference signal time differences (RSTD) between the mobile node and a network node. The plurality of RSTD estimates define a first correlator. The method further includes determining a second correlator of RSTD estimates, and defining the second correlator with the first correlator based on a mean of the plurality of RSTD estimates. Further, the method includes determining a distribution of the plurality of RSTD estimates, and grouping clusters of RSTD estimates in the distribution. Additionally, the method includes selecting a cluster from the clusters of RSTD estimates. The cluster includes RSTD estimates closest to a center of the second correlator. The cluster is transmitted, by the mobile node, to the network node for positioning the mobile node in a communications network.
    Type: Application
    Filed: December 16, 2009
    Publication date: June 16, 2011
    Applicant: Nokia Corporation
    Inventors: Gilles CHARBIT, Alberto ESCOLAR-PIEDRAS
  • Publication number: 20100303166
    Abstract: An apparatus and method for inserting a cyclic postfix for a time-rotated symbol in a communication system. In one embodiment, the apparatus includes a time pre-rotation module configured to time shift bits of at least one of ending samples of a symbol to a beginning of the symbol to form a time-rotated symbol. The apparatus also includes an interpolator configured to construct an up-sampled symbol from the time-rotated symbol and a cyclic postfix module configured to insert a cyclic postfix at an end of the up-sampled symbol to form an expanded up-sampled symbol.
    Type: Application
    Filed: May 29, 2009
    Publication date: December 2, 2010
    Inventor: Alberto Escolar Piedras