Patents by Inventor Christian Caduff

Christian Caduff 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).

  • ADC with dynamic range extension
    Patent number: 7365664
    Abstract: ADC circuitry has a first programmable gain amplifier to amplify an analog input, a first analog to digital converter coupled to an output of the first amplifier, a second programmable gain amplifier, to amplify the analog input, a second analog to digital converter coupled to an output of the second amplifier, and a digital circuit for deriving a digital output from the outputs of the first and second converters and a controller for controlling the gains of the first and second amplifiers, according to the outputs of the first and second converters. Such programmable gain pre amplifiers help enable effective dynamic range to be extended without unduly increasing the number of quantisation bits, or the number of components or the power dissipation. It can be used in applications sensitive to size and power, such as DSP based acoustic devices including hearing aids.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: April 29, 2008
    Assignee: Emma Mixed Signal C.V.
    Inventors: Christian Caduff, Régis Caillet
  • ADC with dynamic range extension
    Publication number: 20070120721
    Abstract: ADC circuitry has a first programmable gain amplifier to amplify an analog input, a first analog to digital converter coupled to an output of the first amplifier, a second programmable gain amplifier, to amplify the analog input, a second analog to digital converter coupled to an output of the second amplifier, and a digital circuit for deriving a digital output from the outputs of the first and second converters and a controller for controlling the gains of the first and second amplifiers, according to the outputs of the first and second converters. Such programmable gain pre amplifiers help enable effective dynamic range to be extended without unduly increasing the number of quantisation bits, or the number of components or the power dissipation. It can be used in applications sensitive to size and power, such as DSP based acoustic devices including hearing aids.
    Type: Application
    Filed: August 7, 2006
    Publication date: May 31, 2007
    Inventors: Christian Caduff, Regis Caillet
  • Amplifier
    Patent number: 6940343
    Abstract: Disclosed is an Amplifier (7) comprising an output driver with a first output stage (4) and a second output stage (5), where an input signal is applied non-inverted to the first output stage and inverted to the second output stage, characterized in that said input signal is applied with delay to one of the output stages (4, 5).
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: September 6, 2005
    Assignee: AMI Semiconductor, Inc.
    Inventors: Alexandre Heubi, Christian Caduff
  • Amplifier
    Publication number: 20040124915
    Abstract: Disclosed is an Amplifier (7) comprising an output driver with a first output stage (4) and a second output stage (5), where an input signal is applied non-inverted to the first output stage and inverted to the second output stage, characterized in that said input signal is applied with delay to one of the output stages (4, 5).
    Type: Application
    Filed: August 14, 2003
    Publication date: July 1, 2004
    Inventors: Alexandre Heubi, Christian Caduff