Patents by Inventor Naotsugu Yamamura
Naotsugu Yamamura 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: 11459276Abstract: The present invention provides an alumina-based thermally conductive oxide that is excellent not only in thermal conductivity but also in chemical resistance, water resistance, and electrical insulation, that has a good kneadability (miscibility) into resins, and that enables to produce a material or an article, such as a resin composition, which is excellent in shapability. The present invention is an alumina-based thermally conductive oxide obtained by firing a starting material mixture containing an aluminum starting material.Type: GrantFiled: September 6, 2016Date of Patent: October 4, 2022Assignee: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Akira Nishio, Kenichi Yamane, Naotsugu Yamamura, Shingo Tominaga, Hiroya Oniduka
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Publication number: 20190359875Abstract: Provided is an alumina-based thermally conductive oxide which has not only an excellent thermal conductivity but also excellent chemical resistance, water-fastness, and electrical insulation property, while exhibiting a satisfactory kneadability (miscibility) into a resin and being capable of producing materials and articles, such as a resin composition, having an excellent shapability. Specifically, the present invention is an alumina-based thermally conductive oxide which is obtained by firing a starting material mixture that contains an aluminum starting material. The aluminum starting material is at least one selected from the group consisting of boehmite, aluminum hydroxide, and alumina; the starting material mixture further contains a boric acid compound and an oxide starting material such as a tungsten compound; and the content of the boric acid compound in the starting material mixture is 0.1 to 5 parts by mass, and the content of the oxide starting material in the starting material mixture is 0.Type: ApplicationFiled: February 27, 2018Publication date: November 28, 2019Inventors: Akira NISHIO, Kenichi YAMANE, Naotsugu YAMAMURA, Shingo TOMINAGA, Hiroya ONIDUKA
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Patent number: 10327009Abstract: In an earliest vertical synchronization period after sending an encoded image data is restarted, a first reference image determination circuit determines to employ a local decoded image generated in a vertical synchronization period immediately preceding a vertical synchronization period in which an error occurs among multiple local decoded images stored in a first DRAM as a reference image. In an earliest vertical synchronization period after a decoding circuit is reset, a second reference image determination circuit determines to employ a decoded image generated in the vertical synchronization period immediately preceding the vertical synchronization period in which the error occurs among multiple decoded images stored in a second DRAM as a reference image.Type: GrantFiled: January 13, 2017Date of Patent: June 18, 2019Assignee: MegaChips CorporationInventors: Naotsugu Yamamura, Akira Okamoto, Nobuyuki Takasu
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Patent number: 10072195Abstract: The thermally conductive composite oxide of the present invention has excellent physical properties, such as high thermal conductivity, water resistance, acid resistance, electric resistance, and electric insulation, required for coating films, films, and articles thereof. Paints or resins including the composite oxide can provide coating films, films, and articles having such properties without treating of a surface, etc. The composite oxide has a spinel structure and contains aluminum as a main metal component and at least one metal other than aluminum, which is magnesium, zinc, calcium, and/or strontium, and has a ratio (b mol)/(a mol) in a range of 0.1 or more and 1.0 or less, where the ratio (b mol)/(a mol) is a number of moles (b) of the metal other than aluminum to that of moles (a) of an aluminum element derived from an alumina-based compound. The thermally conductive composite oxide has Mohs hardness of less than 9.Type: GrantFiled: March 12, 2015Date of Patent: September 11, 2018Assignee: DAINICHISEIKA COLOR & CHEMICALS MFG. CO., LTD.Inventors: Akira Nishio, Toru Kawakami, Kenichi Yamane, Naotsugu Yamamura, Shingo Tominaga
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Publication number: 20180244578Abstract: The present invention provides an alumina-based thermally conductive oxide that is excellent not only in thermal conductivity but also in chemical resistance, water resistance, and electrical insulation, that has a good kneadability (miscibility) into resins, and that enables to produce a material or an article, such as a resin composition, which is excellent in shapability. The present invention is an alumina-based thermally conductive oxide obtained by firing a starting material mixture containing an aluminum starting material.Type: ApplicationFiled: September 6, 2016Publication date: August 30, 2018Inventors: Akira NISHIO, Kenichi YAMANE, Naotsugu YAMAMURA, Shingo TOMINAGA, Hiroya ONIDUKA
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Publication number: 20170134755Abstract: In an earliest vertical synchronization period after sending an encoded image data is restarted, a first reference image determination circuit determines to employ a local decoded image generated in a vertical synchronization period immediately preceding a vertical synchronization period in which an error occurs among multiple local decoded images stored in a first DRAM as a reference image. In an earliest vertical synchronization period after a decoding circuit is reset, a second reference image determination circuit determines to employ a decoded image generated in the vertical synchronization period immediately preceding the vertical synchronization period in which the error occurs among multiple decoded images stored in a second DRAM as a reference image.Type: ApplicationFiled: January 13, 2017Publication date: May 11, 2017Applicant: MegaChips CorporationInventors: Naotsugu YAMAMURA, Akira Okamoto, Nobuyuki Takasu
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Patent number: 9641867Abstract: In an earliest vertical synchronization period after sending an encoded image data is restarted, a first reference image determination circuit determines to employ a local decoded image generated in a vertical synchronization period immediately preceding a vertical synchronization period in which an error occurs among multiple local decoded images stored in a first DRAM as a reference image. In an earliest vertical synchronization period after a decoding circuit is reset, a second reference image determination circuit determines to employ a decoded image generated in the vertical synchronization period immediately preceding the vertical synchronization period in which the error occurs among multiple decoded images stored in a second DRAM as a reference image.Type: GrantFiled: October 22, 2015Date of Patent: May 2, 2017Assignee: MegaChips CorporationInventors: Naotsugu Yamamura, Akira Okamoto, Nobuyuki Takasu
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Publication number: 20160369148Abstract: An object of the present invention is to provide a thermally conductive composite oxide that can realize physical properties required for coating films, films, and molded products obtained by single use of the thermally conductive composite oxide blended into paints and resin compositions without the need for an improvement measure such as surface treatment and that is excellent in thermal conductivity, water resistance, acid resistance, and electric insulation.Type: ApplicationFiled: March 12, 2015Publication date: December 22, 2016Inventors: Akira NISHIO, Toru KAWAKAMI, Kenichi YAMANE, Naotsugu YAMAMURA, Shingo TOMINAGA
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Patent number: 9407919Abstract: In an image coding apparatus (1), a Hadamard transform unit (11) performs horizontal Hadamard transform on a picture of uncompressed image data (21). The sum total of absolute values of AC component values obtained by the Hadamard transform is calculated as a Hadamard value (23) of the picture. A scene change determination unit (12) determines whether a scene change occurs or not in the picture on the basis of the Hadamard value (23). In a case where a scene change occurs in the picture or where a differential absolute value between the amount of generated codes in a coded GOP and the ideal amount of codes in a GOP is larger than a predetermined reference value, a quantization parameter determination unit (13) determines a quantization parameter (24) of the picture on the basis of the Hadamard value (23) and the target amount of codes of the picture. A coding unit (14) codes the picture by using the determined quantization parameter (24).Type: GrantFiled: February 18, 2015Date of Patent: August 2, 2016Assignee: MegaChips CorporationInventors: Naotsugu Yamamura, Akira Okamoto, Makoto Saito, Takuya Hiraoka
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Publication number: 20160119648Abstract: In an earliest vertical synchronization period after sending an encoded image data is restarted, a first reference image determination circuit determines to employ a local decoded image generated in a vertical synchronization period immediately preceding a vertical synchronization period in which an error occurs among multiple local decoded images stored in a first DRAM as a reference image. In an earliest vertical synchronization period after a decoding circuit is reset, a second reference image determination circuit determines to employ a decoded image generated in the vertical synchronization period immediately preceding the vertical synchronization period in which the error occurs among multiple decoded images stored in a second DRAM as a reference image.Type: ApplicationFiled: October 22, 2015Publication date: April 28, 2016Applicant: MegaChips CorporationInventors: Naotsugu YAMAMURA, Akira Okamoto, Nobuyuki Takasu
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Publication number: 20150163495Abstract: In an image coding apparatus (1), a Hadamard transform unit (11) performs horizontal Hadamard transform on a picture of uncompressed image data (21). The sum total of absolute values of AC component values obtained by the Hadamard transform is calculated as a Hadamard value (23) of the picture. A scene change determination unit (12) determines whether a scene change occurs or not in the picture on the basis of the Hadamard value (23). In a case where a scene change occurs in the picture or where a differential absolute value between the amount of generated codes in a coded GOP and the ideal amount of codes in a GOP is larger than a predetermined reference value, a quantization parameter determination unit (13) determines a quantization parameter (24) of the picture on the basis of the Hadamard value (23) and the target amount of codes of the picture. A coding unit (14) codes the picture by using the determined quantization parameter (24).Type: ApplicationFiled: February 18, 2015Publication date: June 11, 2015Applicant: MegaChips CorporationInventors: Naotsugu YAMAMURA, Akira OKAMOTO, Makoto SAITO, Takuya HIRAOKA
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Patent number: 9053387Abstract: Each second selection circuit selects, out of a plurality of evaluation values, an evaluation value being in a predetermined relative positional relation with a first evaluation value as an evaluation value outputted from a first selection circuit, and outputs the selected value. The predetermined relative positional relations are different from one another among a plurality of second selection circuits. Every time a second evaluation value is outputted from the second selection circuit corresponding to the integration circuit, the integration circuit reads a weigh value corresponding to a combination of the second evaluation value and the first evaluation, which makes a pair with the second evaluation and is outputted from the first selection circuit, from a storage circuit corresponding to the second selection circuit and integrates the read values.Type: GrantFiled: March 19, 2014Date of Patent: June 9, 2015Assignee: MegaChips CorporationInventor: Naotsugu Yamamura
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Patent number: 9031341Abstract: In an image coding apparatus (1), a Hadamard transform unit (11) performs horizontal Hadamard transform on a picture of uncompressed image data (21). The sum total of absolute values of AC component values obtained by the Hadamard transform is calculated as a Hadamard value (23) of the picture. A scene change determination unit (12) determines whether a scene change occurs or not in the picture on the basis of the Hadamard value (23). In a case where a scene change occurs in the picture or where a differential absolute value between the amount of generated codes in a coded GOP and the ideal amount of codes in a GOP is larger than a predetermined reference value, a quantization parameter determination unit (13) determines a quantization parameter (24) of the picture on the basis of the Hadamard value (23) and the target amount of codes of the picture. A coding unit (14) codes the picture by using the determined quantization parameter (24).Type: GrantFiled: February 24, 2012Date of Patent: May 12, 2015Assignee: MegaChips CorporationInventors: Naotsugu Yamamura, Akira Okamoto, Makoto Saito, Takuya Hiraoka
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Publication number: 20140294293Abstract: Each second selection circuit selects, out of a plurality of evaluation values, an evaluation value being in a predetermined relative positional relation with a first evaluation value as an evaluation value outputted from a first selection circuit, and outputs the selected value. The predetermined relative positional relations are different from one another among a plurality of second selection circuits. Every time a second evaluation value is outputted from the second selection circuit corresponding to the integration circuit, the integration circuit reads a weigh value corresponding to a combination of the second evaluation value and the first evaluation, which makes a pair with the second evaluation and is outputted from the first selection circuit, from a storage circuit corresponding to the second selection circuit and integrates the read values.Type: ApplicationFiled: March 19, 2014Publication date: October 2, 2014Applicant: MegaChips CorporationInventor: Naotsugu YAMAMURA
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Publication number: 20130336593Abstract: In an image coding apparatus (1), a Hadamard transform unit (11) performs horizontal Hadamard transform on a picture of uncompressed image data (21). The sum total of absolute values of AC component values obtained by the Hadamard transform is calculated as a Hadamard value (23) of the picture. A scene change determination unit (12) determines whether a scene change occurs or not in the picture on the basis of the Hadamard value (23). In a case where a scene change occurs in the picture or where a differential absolute value between the amount of generated codes in a coded GOP and the ideal amount of codes in a GOP is larger than a predetermined reference value, a quantization parameter determination unit (13) determines a quantization parameter (24) of the picture on the basis of the Hadamard value (23) and the target amount of codes of the picture. A coding unit (14) codes the picture by using the determined quantization parameter (24).Type: ApplicationFiled: February 24, 2012Publication date: December 19, 2013Applicant: MegaChips CorporationInventors: Naotsugu Yamamura, Akira Okamoto, Makoto Saito, Takuya Hiraoka