Patents by Inventor Kiyotsugu Ishikawa

Kiyotsugu Ishikawa 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: 4670777
    Abstract: A color filter is constituted by unit arrays of two columns and four rows of filter elements. The first column has cyan, magenta, cyan, and green (or green, yellow, green and cyan) filter elements which are arranged in that order and the second column has yellow, green, yellow, and magenta (or magenta, cyan, magenta and yellow filter elements which are arranged in that order. A solid state image apparatus having an expanded dynamic range is realized by using this color filter in that the dynamic range of the photoelectric elements corresponding to the green filter elements can be utilized more efficiently.
    Type: Grant
    Filed: January 26, 1984
    Date of Patent: June 2, 1987
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyotsugu Ishikawa, Tohru Takamura, Yoshiaki Sone, Susumu Hashimoto, Masao Hiramoto
  • Patent number: 4551757
    Abstract: A method for driving a solid-state image sensor in which the bias charges in a horizontal readout CCD (charge-coupled device) shift register are transferred onto vertical signal lines with the signal charges and then the signal and bias charges are transferred back into the horizontal readout CCD shift register from which are read out the signal charges (generated at the photosensor or photodiodes).
    Type: Grant
    Filed: October 22, 1982
    Date of Patent: November 5, 1985
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshio Ohkubo, Yoshiaki Sone, Susumu Hashimoto, Kiyotsugu Ishikawa, Masanori Omae, Masao Hiramoto
  • Patent number: 4450475
    Abstract: Solid state color imaging apparatus comprises a solid state photoelectric device such as an interline type CCD having a color filter in front of it. The color filter has a number of minute filter elements disposed forming vertical column and at the same time horizontal rows,each vertical column comprising repetition of transparent element, cyanic element, transparent and yellow elementeach odd number horizontal rows, comprising repetition of transparent element and yellow element,each even number horizontal rows comprising repetition of transparent element and cyanic element, andin two-dimensional disposition the transparent elements are disposed in chequered pattern.
    Type: Grant
    Filed: February 5, 1982
    Date of Patent: May 22, 1984
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kiyotsugu Ishikawa, Yoshiaki Sone, Susumu Hashimoto, Masanori Omae, Takao Kunii
  • Patent number: 4403247
    Abstract: In a solid state color imaging apparatus comprisinga solid state photoelectric device having an array of picture elements,a color filter fixed in front of the solid state photoelectric device,the improvement is thatthe color filter has filter elements of a first complementary color (cy), and filter elements of a second complementary color (ye) and substantially transparent parts (tr).The apparatus has, by use of complementary color filter elements, a high light utility efficiency which is about 9 dB higher efficiency than the conventional color filter consisting of primary color filter elements, and hence has a higher S/N ratio.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: September 6, 1983
    Assignee: Matsushita Electronics Corporation
    Inventors: Yoshiaki Sone, Susumu Hashimoto, Kiyotsugu Ishikawa, Takao Kunii
  • Patent number: 4108715
    Abstract: A surface of a semiconductor substrate is coated with a mask having a desired doping pattern and the ions of a desired element are accelerated using the mask so that the structure of a predetermined region is changed. Thereafter the doped region or the region not doped is etched and removed.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: August 22, 1978
    Assignee: Matsushita Electronics Corporation
    Inventors: Kiyotsugu Ishikawa, Kunio Itoh
  • Patent number: 3937949
    Abstract: An improvement in optical remote-control apparatus which comprises a light-beam transmitter and a light-receiver, wherein the improvement is that a light-scattering (i.e., light-diffusing) plate having a suitable area is provided in front of the light-receiver, so that the aiming tolerance of the light-beam transmitter becomes broader, enabling easy remote-control.
    Type: Grant
    Filed: May 30, 1973
    Date of Patent: February 10, 1976
    Assignee: Matsushita Electronics Corporation
    Inventors: Kiyotsugu Ishikawa, Tetsuo Kobune, Hitoo Iwasa, Iwao Teramoto