Patents by Inventor Christine CHARRAT

Christine CHARRAT 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).

  • X-ray detection circuit for a dental radiology sensor
    Patent number: 10393892
    Abstract: A circuit (300) for detecting the appearance of x-rays with a view to triggering a radiological image capture, comprising a set (301) of photodiodes that is connected to a ground (GD), an amplifying circuit (302) and a capacitor (C2), the amplifying circuit (302) comprising an amplifier (AMP) and a voltage source (GEN) and being connected, via a first input, to the output of the set (301) of photodiodes, the capacitor (C2) being connected between the ground (GD) and a second input of the amplifier (AMP), the detecting circuit (300) being characterized in that the amplifying circuit (302) is configured to carry out in succession the steps of: Charging the capacitor (C2) with a reference voltage (Vref) generated by the voltage source (GEN); Isolating the second input of the amplifier (AMP) from the voltage source (GEN); and Integrating the current generated by the set (301) of photodiodes.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: August 27, 2019
    Assignee: TELEDYNE E2V SEMICONDUCTORS SAS
    Inventors: Christine Charrat, Caroline Papaix, Stéphane Gesset
  • X-RAY DETECTION CIRCUIT FOR A DENTAL RADIOLOGY SENSOR
    Publication number: 20190025444
    Abstract: A circuit (300) for detecting the appearance of x-rays with a view to triggering a radiological image capture, comprising a set (301) of photodiodes that is connected to a ground (GD), an amplifying circuit (302) and a capacitor (C2), the amplifying circuit (302) comprising an amplifier (AMP) and a voltage source (GEN) and being connected, via a first input, to the output of the set (301) of photodiodes, the capacitor (C2) being connected between the ground (GD) and a second input of the amplifier (AMP), the detecting circuit (300) being characterized in that the amplifying circuit (302) is configured to carry out in succession the steps of: Charging the capacitor (C2) with a reference voltage (Vref) generated by the voltage source (GEN); Isolating the second input of the amplifier (AMP) from the voltage source (GEN); and Integrating the current generated by the set (301) of photodiodes.
    Type: Application
    Filed: January 10, 2017
    Publication date: January 24, 2019
    Inventors: Christine CHARRAT, Caroline PAPAIX, Stéphane GESSET