Patents by Inventor Tomoya Fujisaki

Tomoya Fujisaki 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).

  • Current/charge-voltage converter
    Patent number: 7057909
    Abstract: A current/charge-voltage convert circuit having an operational amplifier and a capacitor connected between the input terminal and the output terminal of the operational amplifier, this current/charge-voltage convert circuit characterized in that it comprises a first pair of diodes connected in mutually opposing directions to this input terminal, a second pair of diodes connected in the opposite direction of this first pair of diodes to the respective other terminal of this first pair of diodes, a pair of current sources connected in mutually opposing directions to the respective other terminal of this first pair of diodes, a pair of switches connected to the respective other terminal of this first pair of diodes, and resistors connected between the respective other terminal of this second pair of diodes.
    Type: Grant
    Filed: November 5, 2004
    Date of Patent: June 6, 2006
    Assignee: Agilent Technologies, Inc.
    Inventors: Tomoya Fujisaki, Masaharu Goto
  • Current/charge-voltage convertor
    Publication number: 20050105309
    Abstract: A current/charge-voltage convert circuit having an operational amplifier and a capacitor connected between the input terminal and the output terminal of the operational amplifier, this current/charge-voltage convert circuit characterized in that it comprises a first pair of diodes connected in mutually opposing directions to this input terminal, a second pair of diodes connected in the opposite direction of this first pair of diodes to the respective other terminal of this first pair of diodes, a pair of current sources connected in mutually opposing directions to the respective other terminal of this first pair of diodes, a pair of switches connected to the respective other terminal of this first pair of diodes, and resistors connected between the respective other terminal of this second pair of diodes.
    Type: Application
    Filed: November 5, 2004
    Publication date: May 19, 2005
    Inventors: Tomoya Fujisaki, Masaharu Goto