Patents by Inventor Jan Stavnshoj

Jan Stavnshoj 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).

  • Digitally invertible universal amplifier for recording and processing of bioelectric signals
    Patent number: 9622672
    Abstract: A system for measuring electrical signals in a biological subject includes a variable gain amplifier with a predetermined transfer function that generates amplified signals corresponding to an input from electrical signals in the biological subject over a predetermined range of frequencies and amplification gain levels, an analog to digital converter generating digital data corresponding to the amplified signals, and a signal processing device receiving the digital data for the plurality of amplified signals. The signal processing device applies an inversion filter with another transfer function that is an inverse of the transfer function of the variable gain amplifier to remove an effect of the transfer function from the digital data, and generates an output signal corresponding to the electrical signals in the subject with reference to the filtered digital data.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: April 18, 2017
    Assignee: Indiana University Research and Technology Corporation
    Inventors: Ken Yoshida, Kevin Mauser, Jan Stavnshoj
  • DIGITALLY INVERTIBLE UNIVERSAL AMPLIFIER FOR RECORDING AND PROCESSING OF BIOELECTRIC SIGNALS
    Publication number: 20160120428
    Abstract: A system for measuring electrical signals in a biological subject includes a variable gain amplifier with a predetermined transfer function that generates amplified signals corresponding to an input from electrical signals in the biological subject over a predetermined range of frequencies and amplification gain levels, an analog to digital converter generating digital data corresponding to the amplified signals, and a signal processing device receiving the digital data for the plurality of amplified signals. The signal processing device applies an inversion filter with another transfer function that is an inverse of the transfer function of the variable gain amplifier to remove an effect of the transfer function from the digital data, and generates an output signal corresponding to the electrical signals in the subject with reference to the filtered digital data.
    Type: Application
    Filed: June 6, 2014
    Publication date: May 5, 2016
    Applicant: Indiana University Research and Technology Corporation
    Inventors: Ken Yoshida, Kevin Mauser, Jan Stavnshoj