Patents by Inventor Masatoshi Hira

Masatoshi Hira 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: 7511441
    Abstract: A semiconductor integrated circuit capable of reducing the influence of the difference in ambient temperature etc. and realizing a stable phase adjustment circuit has been disclosed. The semiconductor integrated circuit comprises a delay time adjustment circuit for delaying the rising edge or the falling edge of an input signal and changing the amount of delay, a comparison circuit for comparing an output signal from the delay time adjustment circuit with a predetermined voltage, a high-level shift circuit for shifting an output signal from the comparison circuit into a signal on the basis of an output reference voltage, and an output amplifier circuit for amplifying an output signal from the high-level shift circuit and outputting a signal for driving the semiconductor device, wherein the delay time adjustment circuit, the comparison circuit, the high-level shift circuit, and the output amplifier circuit are formed on a single chip.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: March 31, 2009
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Makoto Onozawa, Tomokatsu Kishi, Yoshinori Okada, Masatoshi Hira
  • Publication number: 20060238452
    Abstract: A pre-drive circuit having low deviation of timing of a high level and a low level output voltages is disclosed. A plurality of drive systems are comprised, each having an input amplifier circuits for amplifying input voltages input to input voltage terminals, high level shift circuits for shifting signal levels output from the input amplifier circuits, and output amplifier circuits for amplifying shift signals output from the high level shift circuits, and each drive system has the same constitution.
    Type: Application
    Filed: June 26, 2006
    Publication date: October 26, 2006
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Makoto Onozawa, Yoshinori Okada, Hideaki Ohki, Masatoshi Hira, Haruo Koizumi
  • Patent number: 7084839
    Abstract: A pre-drive circuit having low deviation of timing of a high level and a low level output voltages is disclosed. A plurality of drive systems are comprised, each having an input amplifier circuits for amplifying input voltages input to input voltage terminals, high level shift circuits for shifting signal levels output from the input amplifier circuits, and output amplifier circuits for amplifying shift signals output from the high level shift circuits, and each drive system has the same constitution.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: August 1, 2006
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Makoto Onozawa, Yoshinori Okada, Hideaki Ohki, Masatoshi Hira, Haruo Koizumi
  • Publication number: 20050285819
    Abstract: A semiconductor integrated circuit capable of reducing the influence of the difference in ambient temperature etc. and realizing a stable phase adjustment circuit has been disclosed. The semiconductor integrated circuit comprises a delay time adjustment circuit for delaying the rising edge or the falling edge of an input signal and changing the amount of delay, a comparison circuit for comparing an output signal from the delay time adjustment circuit with a predetermined voltage, a high-level shift circuit for shifting an output signal from the comparison circuit into a signal on the basis of an output reference voltage, and an output amplifier circuit for amplifying an output signal from the high-level shift circuit and outputting a signal for driving the semiconductor device, wherein the delay time adjustment circuit, the comparison circuit, the high-level shift circuit, and the output amplifier circuit are formed on a single chip.
    Type: Application
    Filed: March 24, 2005
    Publication date: December 29, 2005
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Makoto Onozawa, Tomokatsu Kishi, Yoshinori Okada, Masatoshi Hira
  • Publication number: 20040160437
    Abstract: A pre-drive circuit having low deviation of timing of a high level and a low level output voltages is disclosed. A plurality of drive systems are comprised, each having an input amplifier circuits for amplifying input voltages input to input voltage terminals, high level shift circuits for shifting signal levels output from the input amplifier circuits, and output amplifier circuits for amplifying shift signals output from the high level shift circuits, and each drive system has the same constitution.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 19, 2004
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Makoto Onozawa, Yoshinori Okada, Hideaki Ohki, Masatoshi Hira, Haruo Koizumi
  • Patent number: 6636000
    Abstract: A plasma display device has a pair of substrates having electrodes and terminals provided at ends of the electrodes. Driving circuits supply a driving voltage to the electrodes via flexible printed circuit boards to emit light. Connectors are detachably attached to the substrate. The connector includes a housing and terminal members disposed in the housing, with the terminal member having a U-shaped cross-sectional shape, so that a first portion as one leg of the “U” contacts the terminal of the electrode and a second portion as another leg of the “U” contacts the conductor of the flexible connecting member. The terminals of the electrodes are arranged in a staggered manner at the end of the substrate.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: October 21, 2003
    Assignee: Fujitsu Hitachi Plasma Display Limited
    Inventors: Fumitaka Asami, Tadao Miyasaka, Kazuyuki Harada, Masatoshi Hira, Norio Matsumoto
  • Publication number: 20020041155
    Abstract: A plasma display device has a pair of substrates having electrodes and terminals provided at ends of the electrodes. Driving circuits supply a driving voltage to the electrodes via flexible printed circuit boards to emit light. Connectors are detachably attached to the substrate. The connector includes a housing and terminal members disposed in the housing, with the terminal member having a U-shaped cross-sectional shape, so that a first portion as one leg of the “U” contacts the terminal of the electrode and a second portion as another leg of the “U” contacts the conductor of the flexible connecting member. The terminals of the electrodes are arranged in a staggered manner at the end of the substrate.
    Type: Application
    Filed: August 15, 2001
    Publication date: April 11, 2002
    Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITED
    Inventors: Fumitaka Asami, Tadao Miyasaka, Kazuyuki Harada, Masatoshi Hira, Norio Matsumoto