Patents by Inventor Delphine Vallot

Delphine Vallot 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).

  • Tone detector and method therefor
    Patent number: 7529363
    Abstract: A tone detector able to detect multicomponent tones for various tone formats is disclosed. An input signal is received and frequency and amplitude components, if any, of each sample of the incoming signal are estimated. In estimating the components, a current digit value is used to appropriately filter the input signal and estimate frequency and amplitude components. Using the component estimates, a new digit value is determined using a table in storage corresponding to the current tone format. The new digit value corresponds to the symbol whose components are closest in value to the estimated components corresponding to the current digit value. The new digit value is fed back as the current digit value and used in combination with a next sample of the input signal to determine a new digit value. A decision unit is used to process the digit values to determine when a valid symbol is detected.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: May 5, 2009
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Lucio F. C. Pessoa, Valentin Emiya, David Melles, Delphine Vallot
  • Tone detector and method therefor
    Publication number: 20040047370
    Abstract: A tone detector able to detect multicomponent tones for various tone formats is disclosed. An input signal is received and frequency and amplitude components, if any, of each sample of the incoming signal are estimated. In estimating the components, a current digit value is used to appropriately filter the input signal and estimate frequency and amplitude components. Using the component estimates, a new digit value is determined using a table in storage corresponding to the current tone format. The new digit value corresponds to the symbol whose components are closest in value to the estimated components corresponding to the current digit value. The new digit value is fed back as the current digit value and used in combination with a next sample of the input signal to determine a new digit value. A decision unit is used to process the digit values to determine when a valid symbol is detected.
    Type: Application
    Filed: November 12, 2002
    Publication date: March 11, 2004
    Inventors: Lucio F.C. Pessoa, Valentin Emiya, David Melles, Delphine Vallot