Patents by Inventor Utaro Miyagawa

Utaro Miyagawa 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: 20170123567
    Abstract: A detection device includes a plurality of transmitter electrodes that are provided in a predetermined area, a plurality of receiver electrodes that are provided in the predetermined area and that each intersect with the plurality of transmitter electrodes, a transmitter that is connected to the plurality of transmitter electrodes, a receiver that is connected to the plurality of receiver electrodes, detection electrodes that are provided outside the predetermined area and that are connected to at least one of the transmitter and the receiver, and an operation detector configured to detect an operation of a user based on a reception result of the receiver.
    Type: Application
    Filed: October 18, 2016
    Publication date: May 4, 2017
    Inventors: Takashi KITADA, Naoki KOSUGI, Utaro MIYAGAWA
  • Patent number: 6817917
    Abstract: A PDP operates with high luminous efficiency and reproduces colors faithfully. When sealing the PDP, a sealant layer (15) is formed around the facing main surfaces of the front panel (10) and the back panel (20). Protrusions (16) and depressions (17) are formed in parts of the sealant layer (15) to produce gaps (18) at the periphery of the PDP. The heating performed to soften the sealant layer (15) is conducted in a dry gas atmosphere. As a result, moisture passes from the inner space of the PDP through the gaps (18) and out of the PDP, thereby reducing the heat deterioration in the blue phosphor layer (25).
    Type: Grant
    Filed: January 23, 2001
    Date of Patent: November 16, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kado, Kanako Miyashita, Naoki Kosugi, Yasuhisa Ishikura, Utaro Miyagawa, Shigeo Haruki
  • Patent number: 6753645
    Abstract: A plasma display panel comprising plural kinds of phosphor layers emitting different colors of fluorescent light, at least one kind of the phosphor layer being formed of a mixed phosphor obtained by mixing a phosphor having a surface potential with a negative polarity and a phosphor having a surface potential with a positive polarity. By using the mixed phosphor, the negative polarity of the surface potential is changed to the positive polarity, thereby reducing the discharge error and discharge variation, and improving the quality of display.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: June 22, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Haruki, Utaro Miyagawa, Shigeyuki Okumura
  • Publication number: 20010003410
    Abstract: A plasma display panel comprising plural kinds of phosphor layers emitting different colors of fluorescent light, at least one kind of the phosphor layer being formed of a mixed phosphor obtained by mixing a phosphor having a surface potential with a negative polarity and a phosphor having a surface potential with a positive polarity. By using the mixed phosphor, the negative polarity of the surface potential is changed to the positive polarity, thereby reducing the discharge error and discharge variation, and improving the quality of display.
    Type: Application
    Filed: December 8, 2000
    Publication date: June 14, 2001
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigeo Haruki, Utaro Miyagawa, Shigeyuki Okumura
  • Patent number: 5754004
    Abstract: A gas discharge type display device for displaying characters and pictures by utilizing a gas discharge, and a method of producing the same.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: May 19, 1998
    Assignee: Matsushita Electronics Corporation
    Inventors: Utaro Miyagawa, Shinya Fujiwara
  • Patent number: 5670975
    Abstract: A method for driving a gas discharge display panel consists of the steps of applying a writing pulse on a specific display electrode line selected from display electrode lines arranged side by side in the panel, applying a scanning pulse on a specific scanning electrode line selected from scanning electrode lines which are arranged side by side and cross the display electrode lines to produce writing gas discharge in cooperation with the writing pulse in a specific discharge cell arranged at an intersection space between the specific display electrode and the specific scanning electrode line, and applying a series of maintaining pulses subsequent to the scanning pulse on the specific scanning electrode during only a maintaining period to produce maintaining gas discharge subsequent to the writing gas discharge in the specific discharge cell, the maintaining gas discharge being intermittently produced in synchronism with the maintaining pulses.
    Type: Grant
    Filed: August 8, 1996
    Date of Patent: September 23, 1997
    Assignees: Nippon Hoso Kyokai, Matsushita Electronics Corporation
    Inventors: Yoshimichi Takano, Tetsuo Sakai, Hiroshi Murakami, Kazuo Takahashi, Mutsumi Mimasu, Utaro Miyagawa, Makoto Takei, Koichi Wani
  • Patent number: 5610623
    Abstract: A method for driving a gas discharge display panel consists of the steps of applying a writing pulse on a specific display electrode line selected from display electrode lines arranged side by side in the panel, applying a scanning pulse on a specific scanning electrode line selected from scanning electrode lines which are arranged side by side and cross the display electrode lines to produce writing gas discharge in cooperation with the writing pulse in a specific discharge cell arranged at an intersection space between the specific display electrode and the specific scanning electrode line, and applying a series of maintaining pulses subsequent to the scanning pulse on the specific scanning electrode during only a maintaining period to produce maintaining gas discharge subsequent to the writing gas discharge in the specific discharge cell, the maintaining gas discharge being intermittently produced in synchronism with the maintaining pulses.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: March 11, 1997
    Assignees: Nippon Hoso Kyokai, Matsushita Electronics Corporation
    Inventors: Yoshimichi Takano, Tetsuo Sakai, Hiroshi Murakami, Kazuo Takahashi, Mutsumi Mimasu, Utaro Miyagawa, Makoto Takei, Koichi Wani
  • Patent number: 5572230
    Abstract: A method for driving a gas discharge display panel consists of the steps of applying a writing pulse on a specific display electrode line selected from display electrode lines arranged side by side in the panel, applying a scanning pulse on a specific scanning electrode line selected from scanning electrode lines which are arranged side by side and cross the display electrode lines to produce writing gas discharge in cooperation with the writing pulse in a specific discharge cell arranged at an intersection space between the specific display electrode and the specific scanning electrode line, and applying a series of maintaining pulses subsequent to the scanning pulse on the specific scanning electrode during only a maintaining period to produce maintaining gas discharge subsequent to the writing gas discharge in the specific discharge cell, the maintaining gas discharge being intermittently produced in synchronism with the maintaining pulses.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: November 5, 1996
    Assignees: Nippon Hoso Kyokai, Matsushita Electronics Corporation
    Inventors: Yoshimichi Takano, Tetsuo Sakai, Hiroshi Murakami, Kazuo Takahashi, Mutsumi Mimasu, Utaro Miyagawa, Makoto Takei, Koichi Wani
  • Patent number: 5410219
    Abstract: A method for driving a plasma display panel comprising a plurality of first electrodes disposed in parallel with each other, a plurality of second electrodes disposed in parallel with each other and perpendicular to the first electrodes, the second electrodes having a plurality of blocks, and a driving means to apply pulses to the second electrodes, wherein the different electrodes belonging to the different blocks are successively scanned in the predetermined order. Alternatively, the different electrodes may be scanned by repeating applications of pulse to a second electrode belonging to a certain block and to a second electrode belonging to either of the adjacent blocks.
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: April 25, 1995
    Assignee: Matsushita Electronics Corporation
    Inventors: Makoto Takei, Kazuo Takahashi, Koichi Wani, Mutsumi Mimasu, Utaro Miyagawa, Akiko Tamura