Patents by Inventor Takayuki Kurashina

Takayuki Kurashina 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).

  • Publication number: 20230152573
    Abstract: A MEMS actuator includes: a drive circuit for applying a drive voltage having a time waveform, which periodically repeats rising and falling and includes a period to be a constant voltage after the rising and before the falling, between a fixed comb electrode and a movable comb electrode; and a timing detection circuit that generates a capacitance derivative signal indicating a derivative value of a capacitance between the fixed comb electrode and the movable comb electrode by converting a current signal, which is output from the fixed comb electrode or the movable comb electrode within the period due to a change in the capacitance, into a voltage signal and detects a timing when the capacitance derivative signal reaches a threshold value. The drive circuit controls a relationship between the timing detected by the timing detection circuit and a timing of the falling to be constant.
    Type: Application
    Filed: January 27, 2021
    Publication date: May 18, 2023
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Takayuki KURASHINA, Tomofumi SUZUKI, Tatsuya SUGIMOTO, Hiroo YAMAMOTO
  • Patent number: 11258976
    Abstract: A pixel circuit includes a differential amplifier. The differential amplifier includes a non-inverting input terminal, an inverting input terminal, and an output terminal. The differential amplifier includes an input differential pair including first and second NMOS transistors, a current mirror pair including PMOS transistors, and a constant current source including a fifth NMOS transistor. A threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of the fifth NMOS transistor. Further, the threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of another NMOS transistor.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: February 22, 2022
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Sho Morita, Takayuki Kurashina, Hiroo Yamamoto
  • Publication number: 20200280694
    Abstract: A pixel circuit includes a differential amplifier. The differential amplifier includes a non-inverting input terminal, an inverting input terminal, and an output terminal. The differential amplifier includes an input differential pair including first and second NMOS transistors, a current mirror pair including PMOS transistors, and a constant current source including a fifth NMOS transistor. A threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of the fifth NMOS transistor. Further, the threshold voltage of each of the first and second NMOS transistors is higher than a threshold voltage of another NMOS transistor.
    Type: Application
    Filed: October 3, 2018
    Publication date: September 3, 2020
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Sho MORITA, Takayuki KURASHINA, Hiroo YAMAMOTO
  • Publication number: 20160189997
    Abstract: An auxiliary sheet for laser dicing is provided, with which partial adhesion of a substrate film to a processing table is not caused even when dicing a workpiece by using a high output laser light and at a high scan speed, therefore, workability does not decline after that. An adhesive layer is stacked on one surface of the substrate film in the laser dicing auxiliary sheet and a functional layer is stacked on the other surface (a surface to contact with a processing chuck table during dicing), and the functional layer is formed by using a mixture containing metal oxide fine particles, in which an average particle diameter of the primary particle is 5 to 400 nm, and emulsion particles of a thermoplastic resin as a binder material.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 30, 2016
    Inventors: Nobuyuki Abe, Takayuki Kurashina
  • Patent number: 8767110
    Abstract: A solid-state image pickup device 1 includes a light receiving section 10, a first row selecting section 20, a second row selecting section 30, a first readout section 40, a second readout section 50, and a control section 60. Data of pixel units of rows in the light receiving section 10 selected by the first row selecting section 20 are output by the first readout section 40 to obtain image pickup data, and further, data of the pixel units of rows in the light receiving section 10 selected by the second row selecting section 30 are output by the second readout section 50 to obtain communication data.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: July 1, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Yukinobu Sugiyama, Tasuku Joboji, Tetsuya Abe, Takayuki Kurashina, Yuta Suzuki
  • Publication number: 20120099010
    Abstract: A solid-state image pickup device 1 includes a light receiving section 10, a first row selecting section 20, a second row selecting section 30, a first readout section 40, a second readout section 50, and a control section 60. Data of pixel units of rows in the light receiving section 10 selected by the first row selecting section 20 are output by the first readout section 40 to obtain image pickup data, and further, data of the pixel units of rows in the light receiving section 10 selected by the second row selecting section 30 are output by the second readout section 50 to obtain communication data.
    Type: Application
    Filed: July 21, 2010
    Publication date: April 26, 2012
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Yukinobu Sugiyama, Tasuku Joboji, Tetsuya Abe, Takayuki Kurashina, Yuta Suzuki