Patents by Inventor Shunichi Tomita

Shunichi Tomita 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: 7965131
    Abstract: A bias voltage generation circuit includes a data holding section, a correction value storage section, a computing circuit, a voltage dividing circuit and a selection circuit. The data holding section holds a variable n-bit data value that is set from an exterior, wherein n is a positive integer. The correction value storage section stores an n-bit correction value for correcting the n-bit data value. The computing circuit computes the n-bit data value and the n-bit correction value, and outputs an n-bit computing result. The voltage dividing circuit divides a reference voltage into 2n voltages, and outputs 2n levels of divided voltages. The selection circuit selects one level of a divided voltage from the 2n levels of divided voltages on the basis of the n-bit computing result and outputs the selected divided voltage as a bias voltage, the output bias voltage having a variation over 2n levels.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: June 21, 2011
    Assignee: Oki Semiconductor Co., Ltd.
    Inventor: Shunichi Tomita
  • Publication number: 20100039169
    Abstract: A bias voltage generation circuit includes a data holding section, a correction value storage section, a computing circuit, a voltage dividing circuit and a selection circuit. The data holding section holds a variable n-bit data value that is set from an exterior, wherein n is a positive integer. The correction value storage section stores an n-bit correction value for correcting the n-bit data value. The computing circuit computes the n-bit data value and the n-bit correction value, and outputs an n-bit computing result. The voltage dividing circuit divides a reference voltage into 2n voltages, and outputs 2n levels of divided voltages. The selection circuit selects one level of a divided voltage from the 2n levels of divided voltages on the basis of the n-bit computing result and outputs the selected divided voltage as a bias voltage, the output bias voltage having a variation over 2n levels.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 18, 2010
    Inventor: Shunichi Tomita
  • Patent number: 5597683
    Abstract: Disclosed is a silver halide color photographic photosensitive material comprising a support, having thereon at least one photosensitive silver halide layer. At least 50% of the total projected area of the silver halide grains in the emulsion layer is accounted for by tabular grains of an aspect ratio at least 2:1, and a compound which can be represented by formula (I) below is in at least one layer.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: January 28, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Uchida, Shunichi Tomita, Toshio Kawagishi
  • Patent number: 5437965
    Abstract: A silver halide color photographic material comprising a support having thereon at least one yellow coupler-containing blue-sensitive silver halide emulsion layer (BL), at least one magenta coupler-containing green-sensitive silver halide emulsion layer (GL) and at least one cyan coupler-containing red-sensitive silver halide emulsion layer (RL); wherein the weight-averaged wavelength of the spectral sensitivity distribution of GL (.lambda..sub.G) of the photographic material is between 520 nm and 580 nm (520 nm.ltoreq..lambda..sub.G .ltoreq.580 nm), the weight-averaged wavelength of the spectral sensitivity distribution of RL (.lambda..sub.R) of the photographic material is between 590 nm and 650 nm (590 nm.ltoreq..lambda..sub.R .ltoreq.650 nm), and the weight-averaged wavelength of the spectral sensitivity distribution of BL (.lambda..sub.B) of the photographic material is between 430 nm and 480 nm (430 nm.ltoreq..lambda..sub.B .ltoreq.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: August 1, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Uchida, Toshio Kawagishi, Shunichi Tomita