Patents by Inventor Yasuji Noguchi
Yasuji Noguchi 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: 8704735Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.Type: GrantFiled: September 14, 2012Date of Patent: April 22, 2014Assignee: Hitachi Maxell, Ltd.Inventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Patent number: 8405577Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.Type: GrantFiled: September 2, 2011Date of Patent: March 26, 2013Assignee: Hitachi, Ltd.Inventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20130010011Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Patent number: 8223174Abstract: A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.Type: GrantFiled: September 22, 2008Date of Patent: July 17, 2012Assignee: Hitachi, Ltd.Inventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20110316895Abstract: A display method of a plasma display apparatus to which primary color video signals are inputted and which carries out color display by letting phosphors for primary colors emit light is provided. The display method displays the primary color video signals by changing a gray level of an output primary color video signal in accordance with a gray level of an input primary color video signal. When each gray level of the inputted primary color video signals changes from a first value to a second value which is larger than the first value, a gray level of a primary color video signal for a phosphor having the largest influence of luminance saturation properties among the phosphors is increased relative to a gray level of the other primary color video signal.Type: ApplicationFiled: September 2, 2011Publication date: December 29, 2011Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Patent number: 8035578Abstract: A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.Type: GrantFiled: October 31, 2007Date of Patent: October 11, 2011Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20090040148Abstract: A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.Type: ApplicationFiled: September 22, 2008Publication date: February 12, 2009Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20090040146Abstract: A disclosed plasma display apparatus and a plasma display panel driving method provide improved luminance while preventing decrease in resolution. In the plasma display apparatus, which is adapted to the display of an interlace signal, the maximum number of sustain pulses associated with the emission of light that can be made in one field is calculated, based on the vertical synchronization signal frequency of the input signal. A display load factor of the input signal in the one field is calculated and, based on the calculated display load factor, a target number of sustain pulses in the one field is determined. Based on a relationship between the target number of sustain pulses and the maximum number of sustain pulses, an emission luminance ratio of a sub-display line to a main-display line in the one field is determined.Type: ApplicationFiled: February 27, 2008Publication date: February 12, 2009Inventors: Masanori TAKEUCHI, Yasunobu Hashimoto, Hideaki Ohki, Yuichiro Kimura, Naoki Itokawa, Yasuji Noguchi
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Patent number: 7460088Abstract: A plasma display apparatus, in which the display quality of a dark image is improved and which uses a subfield method, has been disclosed. The plasma display apparatus comprises a plasma display panel, a sustain pulse cycle changing means for detecting the display load ratio of each subfield and changing the sustain pulse cycle of each subfield according to the display load ratio, and an adaptive subfield number changing means for calculating a vacant time in a display frame generated by changing the sustain pulse cycle, judging whether a subfield can be added according to the vacant time, and determining the number of subfields in the display frame.Type: GrantFiled: January 25, 2005Date of Patent: December 2, 2008Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Masanori Takeuchi, Yasuji Noguchi, Yutaka Chiaki, Shunji Oota
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Patent number: 7439941Abstract: A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.Type: GrantFiled: November 28, 2000Date of Patent: October 21, 2008Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20080165087Abstract: The present invention relates to a PDP device, and mainly provides a technique for preventing occurrence of flicker (in particular, line flicker in an interlace display). In the present PDP device, by control operation in a control circuit, in each of odd numbered and even numbered fields of the conventional art, both odd numbered and even numbered display line groups are continuously driven in a first half and a second half based on the same data (data of the odd numbered display line) as a new field structure.Type: ApplicationFiled: August 29, 2007Publication date: July 10, 2008Inventors: Ryo Nakano, Masaya Tajima, Yasuji Noguchi
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Publication number: 20080068405Abstract: A display apparatus, which displays a color image by controlling the number of emissions or the intensity thereof in accordance with primary color video signals input thereto, has a detection portion and a white balance correction portion. The detection portion is used to detect the number of emissions or the intensity, and the white balance correction portion is used to correct white balance by adjusting the amplitudes of the primary color video signals in accordance with the detected number of emissions or the detected intensity. Therefore, correct white balance can be maintained regardless of the number of emissions or the intensity of emission.Type: ApplicationFiled: October 31, 2007Publication date: March 20, 2008Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Ken Kumakura, Hideaki Ohki, Yuichiro Kimura, Yasuji Noguchi, Takayuki Ooe
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Publication number: 20070252785Abstract: A plasma display device is provided including: an ambient temperature detector which detects an ambient temperature; a display load factor detector which detects a display load factor; a sustain pulse number determiner which determines a sustain pulse number based on the ambient temperature and the display load factor; and a plasma display panel which performs display according to the determined sustain pulse number.Type: ApplicationFiled: February 7, 2007Publication date: November 1, 2007Inventors: Ryo Nakano, Yasuji Noguchi
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Publication number: 20070001932Abstract: Aiming at more exactly correcting luminance degradation in a color-wise manner, a plasma display device proposed herein has a gain correction section color-wisely correcting gains of video signals for a plurality of colors; and a plasma display panel presenting display corresponding to the gain-corrected video signals while being supplied with sustain pulses, wherein the gain correction section color-wisely corrects gains of the video signals, corresponding to time corresponded to the operation time, video load ratio, and the number of the sustain pulses or values relevant thereto.Type: ApplicationFiled: June 15, 2006Publication date: January 4, 2007Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Yoshinori Miyazaki, Yasuji Noguchi, Masaya Tajima, Ayahito Kojima
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Patent number: 7098875Abstract: A display device that can prevent the thermal destruction and screen burn-in caused by display patterns has been disclosed. In this device, the display luminance is determined by the number of light emissions, and there are provided a sustain frequency control section that controls the sustain frequency, a load ratio calculation section that calculates the load ratio for each frame of display data, plural counters, a load ratio counter control section that controls so as to increase the counts of the counters corresponding to the load ratio level calculated by the load ratio calculation section, and a first judgment section that outputs a first control signal when any of the counts exceeds a first reference value, wherein the sustain frequency control section decreases the sustain frequency according to the first control signal.Type: GrantFiled: March 3, 2003Date of Patent: August 29, 2006Assignee: Fujitsu Hitachi Plasma Display LimitedInventors: Makoto Onozawa, Yasuji Noguchi, Ayahito Kojima, Hideaki Ohki
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Publication number: 20050231444Abstract: A plasma display apparatus, in which the display quality of a dark image is improved and which uses a subfield method, has been disclosed. The plasma display apparatus comprises a plasma display panel, a sustain pulse cycle changing means for detecting the display load ratio of each subfield and changing the sustain pulse cycle of each subfield according to the display load ratio, and an adaptive subfield number changing means for calculating a vacant time in a display frame generated by changing the sustain pulse cycle, judging whether a subfield can be added according to the vacant time, and determining the number of subfields in the display frame.Type: ApplicationFiled: January 25, 2005Publication date: October 20, 2005Applicant: Fujitsu Hitachi Plasma Display LimitedInventors: Masanori Takeuchi, Yasuji Noguchi, Yutaka Chiaki, Shunji Oota
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Publication number: 20040008216Abstract: A display device that can prevent the thermal destruction and screen burn-in caused by display patterns has been disclosed. In this device, the display luminance is determined by the number of light emissions, and there are provided a sustain frequency control section that controls the sustain frequency, a load ratio calculation section that calculates the load ratio for each frame of display data, plural counters, a load ratio counter control section that controls so as to increase the counts of the counters corresponding to the load ratio level calculated by the load ratio calculation section, and a first judgment section that outputs a first control signal when any of the counts exceeds a first reference value, wherein the sustain frequency control section decreases the sustain frequency according to the first control signal.Type: ApplicationFiled: March 3, 2003Publication date: January 15, 2004Applicant: FUJITSU HITACHI PLASMA DISPLAY LIMITEDInventors: Makoto Onozawa, Yasuji Noguchi, Ayahito Kojima, Hideaki Ohki
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Patent number: 6151000Abstract: A display apparatus and display method are provided for a display panel having pixels arranged in a matrix form for displaying an image on a effective display area. Horizontal electrodes and vertical electrodes in the display panel are scanned for selectively illuminating said pixels by using a time sharing drive method in which one field period is divided into plural sub-fields weighted according to a sustaining period. As a result, an effective display area is divided into plural areas, no scanning for selecting a light emitting pixel is executed in a non-display area, and the number of sub-fields is increased in an area in which display in multiple gradations is required in a display area to obtain sufficient gradation. Instead of increasing the number of the sub-fields, the total sustaining period per one field is increased to obtain sufficient brightness.Type: GrantFiled: May 12, 1997Date of Patent: November 21, 2000Assignee: Hitachi, Ltd.Inventors: Hiroshi Ohtaka, Masaji Ishigaki, Yasuji Noguchi, Yuichiro Kimura, Ken Kumakura
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Patent number: 5883476Abstract: A plurality of photo detectors are arranged outside the display screen of a projection display apparatus having a built-in digital convergence correction system and a function for adjusting data in the frame memory so as to coincide the photoelectric devices of the photo detectors with the adjustment patterns is provided. The adjusted data when the convergence on the entire screen of the display is adjusted and the adjusted data when the convergence is adjusted by the adjustment function before misconvergence is generated are memorized beforehand. When misconvergence is generated, the convergence is adjusted by the adjustment function again, and a corresponding correction value is obtained on the photo detector by calculating the adjusted data at this time and the prememorized adjusted data, and a correction value on the entire screen is obtained by executing an interpolation calculation from this correction value, and the misconvergence on the entire screen is corrected.Type: GrantFiled: June 7, 1995Date of Patent: March 16, 1999Assignee: Hitachi, Ltd.Inventors: Yasuji Noguchi, Yuichiro Kimura, Kuninori Matsumi, Kenicji Matsumoto, Mitsuo Okimoto, Michitaka Ohsawa, Akito Takemoto, Sadao Kubota, Kazuhiro Kaizaki, Chiharu Ishino
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Patent number: 5345280Abstract: A digital convergence correction system and a method of preparing a convergence correction data used for an image display unit, including at least one cathode ray tube, are disclosed. Correction data at correction points at predetermined between adjusting points providing representative correction points are determined by interpolation. A whole section subjected to correction is segmented into a plurality of sub-sections. An interpolating function for each sub-section is an independent low-order function. The values of the interpolating functions for adjacent sub-sections sandwiching a boundary, i.e., an adjusting point, the values of the first order derivatives and the values of the second order derivatives, respectively, are rendered to be equal to each other at such adjusting point.Type: GrantFiled: February 11, 1993Date of Patent: September 6, 1994Assignee: Hitachi, Ltd.Inventors: Yuichiro Kimura, Yasuji Noguchi, Kuninori Matsumi