Patents by Inventor Kazuo Yoshiikawa

Kazuo Yoshiikawa 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: 7002535
    Abstract: A display apparatus includes a display panel including address electrodes and sustain electrodes crossing the address electrodes, with pixels being sandwiched between the address electrodes and the sustain electrodes. A sustain-electrode drive circuit selectively generates both sustain pulses and scan pulses and supplies them to the sustain electrodes. An address-electrode drive circuit generates address pulses based on a video signal and supplies the address pulses to the address electrodes. A control-signal generation circuit generates a control signal for controlling the sustain-electrode drive circuit to generate a selected one of the sustain pulses and the scan pulses and supplies the control signal to the sustain-electrode drive circuit. In order to display an image on the display panel, the sustain-electrode drive circuit both specifies addresses of pixels to be turned on and turns on the pixels at the specified addresses.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: February 21, 2006
    Assignees: Hitachi, Ltd., Fujitsu Limited
    Inventors: Makoto Onozawa, Yuji Sano, Michitaka Ohsawa, Takashi Sasaki, Noboru Akiyama, Fumitaka Asami, Kazuo Yoshiikawa, Hitoshi Hirakawa, Tomokatsu Kishi, Toyoshi Kawada
  • Publication number: 20040257309
    Abstract: A display apparatus includes a display panel including address electrodes and sustain electrodes crossing the address electrodes, with pixels being sandwiched between the address electrodes and the sustain electrodes. A sustain-electrode drive circuit selectively generates both sustain pulses and scan pulses and supplies them to the sustain electrodes. An address-electrode drive circuit generates address pulses based on a video signal and supplies the address pulses to the address electrodes. A control-signal generation circuit generates a control signal for controlling the sustain-electrode drive circuit to generate a selected one of the sustain pulses and the scan pulses and supplies the control signal to the sustain-electrode drive circuit. In order to display an image on the display panel, the sustain-electrode drive circuit both specifies addresses of pixels to be turned on and turns on the pixels at the specified addresses.
    Type: Application
    Filed: June 14, 2004
    Publication date: December 23, 2004
    Inventors: Makoto Onozawa, Yuji Sano, Michitaka Ohsawa, Takashi Sasaki, Naboru Akiyama, Fumitaka Asami, Kazuo Yoshiikawa, Hitoshi Hirakawa, Tomokatsu Kishi, Toyoshi Kawada
  • Patent number: 6781564
    Abstract: A display apparatus includes a display panel including address electrodes and sustain electrodes crossing the address electrodes, with pixels being sandwiched between the address electrodes and the sustain electrodes. A sustain-electrode drive circuit selectively generates both sustain pulses and scan pulses and supplies them to the sustain electrodes. An address-electrode drive circuit generates address pulses based on a video signal and supplies the address pulses to the address electrodes. A control-signal generation circuit generates a control signal for controlling the sustain-electrode drive circuit to generate a selected one of the sustain pulses and the scan pulses and supplies the control signal to the sustain-electrode drive circuit. In order to display an image on the display panel, the sustain-electrode drive circuit both specifies addresses of pixels to be turned on and turns on the pixels at the specified addresses.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: August 24, 2004
    Assignees: Hitachi, Ltd., Fujitsu Limited
    Inventors: Makoto Onozawa, Yuji Sano, Michitaka Ohsawa, Takashi Sasaki, Noboru Akiyama, Fumitaka Asami, Kazuo Yoshiikawa, Hitoshi Hirakawa, Tomokatsu Kishi, Toyoshi Kawada
  • Publication number: 20030122737
    Abstract: A display apparatus includes a display panel including address electrodes and sustain electrodes crossing the address electrodes, with pixels being sandwiched between the address electrodes and the sustain electrodes. A sustain-electrode drive circuit selectively generates both sustain pulses and scan pulses and supplies them to the sustain electrodes. An address-electrode drive circuit generates address pulses based on a video signal and supplies the address pulses to the address electrodes. A control-signal generation circuit generates a control signal for controlling the sustain-electrode drive circuit to generate a selected one of the sustain pulses and the scan pulses and supplies the control signal to the sustain-electrode drive circuit. In order to display an image on the display panel, the sustain-electrode drive circuit both specifies addresses of pixels to be turned on and turns on the pixels at the specified addresses.
    Type: Application
    Filed: December 17, 2002
    Publication date: July 3, 2003
    Inventors: Makoto Onozawa, Yuji Sano, Michitaka Ohsawa, Takashi Sasaki, Noboru Akiyama, Fumitaka Asami, Kazuo Yoshiikawa, Hitoshi Hirakawa, Tomokatsu Kishi, Toyoshi Kawada
  • Patent number: 6496166
    Abstract: As is obvious from the description in the specification and the attached drawings, the present invention provides a display apparatus for displaying an image on a display panel by turning on pixels of said display panel, said display apparatus comprising: a display panel provided with: address electrodes driven by address pulses based on a video input signal; and sustain electrodes crossing said address electrodes and sandwiching electrical discharging units of pixels with said address electrodes and driven by sustain pulses; a sustain-electrode drive circuit for generating said sustain pulses and scan pulses, provided with a common circuit for generating said sustain pulses or said scan pulses in response to an operating state thereof and for supplying said scan pulses and said sustain pulses to said sustain electrodes.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: December 17, 2002
    Assignees: Hitachi, Ltd., Fujitsu Limited
    Inventors: Makoto Onozawa, Yuji Sano, Michitaka Ohsawa, Takashi Sasaki, Noboru Akiyama, Fumitaka Asami, Kazuo Yoshiikawa, Hitoshi Hirakawa, Tomokatsu Kishi, Toyoshi Kawada