Patents by Inventor Earl D. SCHREYER

Earl D. SCHREYER 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).

  • Methods and apparatus related to protection of a speaker
    Patent number: 10015608
    Abstract: In one general aspect, a method can include calculating, at a calibration temperature of a speaker, a calibration parameter through a coil of the speaker in response to a first test signal, and can include sending a second test signal through the coil of the speaker. The method can also include measuring a parameter through the coil of the speaker based on the second test signal, and calculating a temperature change of the coil of the speaker based on the parameter and based on the calibration parameter at the calibration temperature.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: July 3, 2018
    Assignee: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Philip Crawley, William D. Llewellyn, Majid Shushtarian, Earl D. Schreyer
  • METHODS AND APPARATUS RELATED TO PROTECTION OF A SPEAKER
    Publication number: 20170303057
    Abstract: In one general aspect, a method can include calculating, at a calibration temperature of a speaker, a calibration parameter through a coil of the speaker in response to a first test signal, and can include sending a second test signal through the coil of the speaker. The method can also include measuring a parameter through the coil of the speaker based on the second test signal, and calculating a temperature change of the coil of the speaker based on the parameter and based on the calibration parameter at the calibration temperature.
    Type: Application
    Filed: July 6, 2017
    Publication date: October 19, 2017
    Applicant: FAIRCHILD SEMICONDUCTOR CORPORATION
    Inventors: Philip CRAWLEY, William D. LLEWELLYN, Majid SHUSHTARIAN, Earl D. SCHREYER
  • METHODS AND APPARATUS RELATED TO PROTECTION OF A SPEAKER
    Publication number: 20140126730
    Abstract: In one general aspect, a method can include calculating, at a calibration temperature of a speaker, a calibration parameter through a coil of the speaker in response to a first test signal, and can include sending a second test signal through the coil of the speaker. The method can also include measuring a parameter through the coil of the speaker based on the second test signal, and calculating a temperature change of the coil of the speaker based on the parameter and based on the calibration parameter at the calibration temperature.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 8, 2014
    Applicant: Fairchild Semiconductor Corporation
    Inventors: Philip CRAWLEY, William D. LLEWELLYN, Majid SHUSHTARIAN, Earl D. SCHREYER