Patents by Inventor Noriyuki Osumi

Noriyuki Osumi 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).

  • Patent number: 11979124
    Abstract: A charge amplifier includes: an input line thorough which an electric charge signal is propagated; an integration circuit including an input terminal coupled to the input line and an output terminal that outputs the voltage signal; a reset switch configured to reset the voltage signal by closing between the input terminal and the output terminal; a leakage current correction circuit including a first resistance circuit and a first switch coupled in series in this order between a first node, which has a first potential different from a potential of the input line, and the input line; and a control circuit configured to control the first switch based on the voltage signal so as to cancel at least a part of a leakage current flowing through the integration circuit.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: May 7, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Noriyuki Osumi
  • Publication number: 20210288625
    Abstract: A charge amplifier includes: an input line through which an electric charge signal is propagated; an integration circuit including an input terminal coupled to the input line and an output terminal that outputs the voltage signal; a reset switch configured to reset the voltage signal by closing between the input terminal and the output terminal; a leakage current correction circuit including a first resistance circuit and a first switch coupled in series in this order between a first node, which has a first potential different from a potential of the input line, and the input line; and a control circuit configured to control the first switch based on the voltage signal so as to cancel at least a part of a leakage current flowing through the integration circuit.
    Type: Application
    Filed: March 10, 2021
    Publication date: September 16, 2021
    Inventor: Noriyuki Osumi