Patents by Inventor Hidenori Ohnuki
Hidenori Ohnuki 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).
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Patent number: 8203549Abstract: A plasma display panel driving method and a plasma display apparatus are disclosed in which a suitable address discharge can be performed at a next scanning timing by reducing voltage changes in a sustain electrode and a scan electrode caused by a change of an address pulse when the address pulse is applied to an address electrode at a scanning timing. The plasma display panel driving method drives a plasma display panel which includes plural scan electrodes extending in a first direction and plural address electrodes extending in a second direction orthogonal to the first direction. In the method, a negative polarity scan pulse is applied to a scan electrode, a positive polarity address pulse is applied to an address electrode from an address electrode driving circuit, and an address discharge is generated.Type: GrantFiled: December 19, 2008Date of Patent: June 19, 2012Assignee: Hitachi, Ltd.Inventors: Hidenori Ohnuki, Akihiro Machida, Yoshinori Okada, Tomohiro Mitou, Satoshi Yuri
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Patent number: 7978153Abstract: The plasma display device includes connecting means for connecting the X/Y electrodes of the plasma display panel and the X/Y electrode drive circuits. In the X electrode pattern and the Y electrode pattern on the printed board in the connecting means, a current path connecting the center electrodes of the plasma display panel and the X electrode drive circuit or Y electrode drive circuit is longer than a current path connecting the peripheral electrodes and the X electrode drive circuit or Y electrode drive circuit. The current paths at the plasma display panel side are in the U-shape folded in the upper part and the lower part in the periphery of the plasma display panel, respectively. Also, the current paths are first connected to the upper or lower electrodes, and then sequentially connected to the center electrodes via the upper part and the lower part.Type: GrantFiled: May 5, 2006Date of Patent: July 12, 2011Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Sojiro Hagihara, Akihiro Machida, Hidenori Ohnuki, Hideaki Ohki
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Patent number: 7598929Abstract: A PDP apparatus in which a large-sized plasma display panel, whose electrodes have large drive requirements, is driven by using already existing driver ICs, and a PDP apparatus in which the operating conditions when a plasma display panel is driven by using a plurality of driver ICs have been improved, are disclosed. According to a first aspect, one electrode of the plasma display panel is driven by combining a plurality of drive signals output from the driver IC and, according to a second aspect, in a configuration in which a plurality of electrodes are driven by a plurality of identical driver ICs, when some of a plurality of outputs of the driver ICs are not connected to the electrodes and not used, the unused outputs are distributed in each driver IC as evenly as possible.Type: GrantFiled: July 28, 2004Date of Patent: October 6, 2009Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Hidenori Ohnuki, Yoshinori Okada
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Publication number: 20090244042Abstract: A plasma display panel driving method and a plasma display apparatus are disclosed in which a suitable address discharge can be performed at a next scanning timing by reducing voltage changes in a sustain electrode and a scan electrode caused by a change of an address pulse when the address pulse is applied to an address electrode at a scanning timing. The plasma display panel driving method drives a plasma display panel which includes plural scan electrodes extending in a first direction and plural address electrodes extending in a second direction orthogonal to the first direction. In the method, a negative polarity scan pulse is applied to a scan electrode, a positive polarity address pulse is applied to an address electrode from an address electrode driving circuit, and an address discharge is generated.Type: ApplicationFiled: December 19, 2008Publication date: October 1, 2009Inventors: Hidenori Ohnuki, Akihiro Machida, Yoshinori Okada, Tomohiro Mitou, Satoshi Yuri
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Publication number: 20080278413Abstract: A plasma display apparatus includes a plurality of electrodes and a driver circuit configured to drive the plurality of electrodes, wherein the driver circuit includes a plurality of driver ICs coupled in common to an electrode with respect to each of the plurality of electrodes, and the plurality of driver ICs supply electric currents to said electrode in a temporally staggered manner so as to drive each of the plurality of electrodes.Type: ApplicationFiled: October 18, 2007Publication date: November 13, 2008Inventors: Takashi Shiizaki, Hidenori Ohnuki, Satoshi Yuri, Tetsuya Kaminaka, Hirohito Kuriyama, Tomokatsu Kishi
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Publication number: 20080024395Abstract: A plasma display apparatus includes a display panel including first electrodes, second electrodes, and third electrodes, a first drive circuit configured to drive the first electrodes, a plurality of scan circuits configured to successively scan the first electrodes, a second drive circuit configured to drive the second electrodes, a third drive circuit configured to drive the third electrodes while the plurality of scan circuits successively scan the first electrodes to supply a drive power from the first drive circuit to the first electrodes, and a delay unit inserted into an interconnect connecting between at least one of the plurality of scan circuits and the first drive circuit, wherein electric currents supplied from the first drive circuit flow at different timings into at least two of the plurality of scan circuits in response to a propagation delay on the interconnect caused by the delay unit.Type: ApplicationFiled: January 30, 2007Publication date: January 31, 2008Inventors: Satoshi Yuri, Hidenori Ohnuki, Akihiro Machida
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Patent number: 7224329Abstract: A PDP apparatus of low power consumption and without erroneous malfunctions is equipped with a sustaining circuit that prevents an on/off timing shift and deterioration of a sustaining pulse produced thereby. Phase adjusting circuits, which adjust the timing of the changing edge of the sustaining pulse, are provided for the sustaining circuit; the power recovery circuit is of improved efficiency; and power consumption is reduced by optimizing the timing of a changing edge of the sustaining pulse The circuit devices used in the sustaining circuits are classified according to delay times and sets of the circuit devices are selected so that the timing of a changing edge of the sustaining pulse falls within a predetermined allowance, and the selected sets of the circuit devices are set to the PDP.Type: GrantFiled: November 1, 2000Date of Patent: May 29, 2007Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Makoto Onozawa, Michitaka Ohsawa, Kenji Ishiwata, Takeshi Kuwahara, Yoshikazu Kanazawa, Kenji Kimura, Hidenori Ohnuki, Taizo Ohno
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Publication number: 20060256043Abstract: The plasma display device includes connecting means for connecting the X/Y electrodes of the plasma display panel and the X/Y electrode drive circuits. In the X electrode pattern and the Y electrode pattern on the printed board in the connecting means, a current path connecting the center electrodes of the plasma display panel and the X electrode drive circuit or Y electrode drive circuit is longer than a current path connecting the peripheral electrodes and the X electrode drive circuit or Y electrode drive circuit. The current paths at the plasma display panel side are in the U-shape folded in the upper part and the lower part in the periphery of the plasma display panel, respectively. Also, the current paths are first connected to the upper or lower electrodes, and then sequentially connected to the center electrodes via the upper part and the lower part.Type: ApplicationFiled: May 5, 2006Publication date: November 16, 2006Inventors: Sojiro Hagihara, Akihiro Machida, Hidenori Ohnuki, Hideaki Ohki
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Publication number: 20050077834Abstract: A PDP apparatus in which a large-sized plasma display panel, whose electrodes have large drive requirements, is driven by using already existing driver ICs, and a PDP apparatus in which the operating conditions when a plasma display panel is driven by using a plurality of driver ICs have been improved, are disclosed. According to a first aspect, one electrode of the plasma display panel is driven by combining a plurality of drive signals output from the driver IC and, according to a second aspect, in a configuration in which a plurality of electrodes are driven by a plurality of identical driver ICs, when some of a plurality of outputs of the driver ICs are not connected to the electrodes and not used, the unused outputs are distributed in each driver IC as evenly as possible.Type: ApplicationFiled: July 28, 2004Publication date: April 14, 2005Applicant: Fujitsu Hitachi Plasma Display LimitedInventors: Hidenori Ohnuki, Yoshinori Okada