Patents by Inventor Yoshihisa Sugiyama
Yoshihisa Sugiyama 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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Publication number: 20110148806Abstract: A pointer detection apparatus and a pointer detection method of the cross point electrostatic coupling type are disclosed, by which a pointer on a conductor pattern can be detected at a higher speed. The pointer detection apparatus includes a conductor pattern, a spread code supplying circuit, a reception conductor selection circuit, an amplification circuit, an analog to digital conversion circuit, and a correlation value calculation circuit. The spread code supplying circuit supplies a plurality of spread codes at the same time. The correlation value calculation circuit determines correlation values between signals output from the analog to digital conversion circuit and the correlation calculation codes respectively corresponding to the spread codes. A pointer is detected based on the determined correlation values.Type: ApplicationFiled: June 14, 2010Publication date: June 23, 2011Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20110153263Abstract: A pointer detection apparatus and a pointer detection method of the cross point electrostatic coupling type are disclosed, by which a pointer on a conductor pattern can be detected at a higher speed. The pointer detection apparatus includes a conductor pattern, a spread code supplying circuit, a reception conductor selection circuit, an amplification circuit, an analog to digital conversion circuit, and a correlation value calculation circuit. The spread code supplying circuit supplies a plurality of spread codes at the same time. The correlation value calculation circuit determines correlation values between signals output from the analog to digital conversion circuit and the correlation calculation codes respectively corresponding to the spread codes. A pointer is detected based on the determined correlation values.Type: ApplicationFiled: June 14, 2010Publication date: June 23, 2011Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20110148785Abstract: A pointer detection apparatus and a pointer detection method of the cross point electrostatic coupling type are disclosed, by which a pointer on a conductor pattern can be detected at a higher speed. The pointer detection apparatus includes a conductor pattern, a spread code supplying circuit, a reception conductor selection circuit, an amplification circuit, an analog to digital conversion circuit, and a correlation value calculation circuit. The spread code supplying circuit supplies a plurality of spread codes at the same time. The correlation value calculation circuit determines correlation values between signals output from the analog to digital conversion circuit and the correlation calculation codes respectively corresponding to the spread codes. A pointer is detected based on the determined correlation values.Type: ApplicationFiled: June 14, 2010Publication date: June 23, 2011Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20100321314Abstract: Disclosed herein is a pointer detection apparatus, including: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction; a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply the signals of different frequencies to those first conductors, between which N ones of the first conductors are interposed, N being a predetermined integer equal to or greater than 0; a second conductor selection circuit configured to selectively receive detection signals from the second conductors; and a signal detection circuit configured to obtain signals of individual frequencies, corresponding to the signals of different frequencies produced by the multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductorsType: ApplicationFiled: March 30, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama
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Publication number: 20100321334Abstract: A pointer detection apparatus includes a conductor pattern with first conductors disposed in a first direction and second conductors disposed in a second direction that crosses the first direction, and a code string signal production circuit for producing signals based on orthogonal code strings with phases different from each other and supplying the produced signals to the first conductors. The apparatus also includes a signal detection circuit connected to the second conductors for detecting a signal corresponding to a variation of electrostatic capacitance between the conductor pattern and a pointer, an analog to digital conversion (ADC) circuit for converting the signal output from the signal detection circuit into a digital signal comprising a word string of multiple bits, and a correlation detection circuit for determining correlation values between the code strings and the word string.Type: ApplicationFiled: March 25, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20100321333Abstract: A pointer detection apparatus includes a conductor pattern with first conductors disposed in a first direction and second conductors disposed in a second direction that crosses the first direction, and a code string signal production circuit for producing signals based on orthogonal code strings with phases different from each other and supplying the produced signals to the first conductors. The apparatus also includes a signal detection circuit connected to the second conductors for detecting a signal corresponding to a variation of electrostatic capacitance between the conductor pattern and a pointer, an analog to digital conversion (ADC) circuit for converting the signal output from the signal detection circuit into a digital signal comprising a word string of multiple bits, and a correlation detection circuit for determining correlation values between the code strings and the word string.Type: ApplicationFiled: March 25, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20100321313Abstract: Disclosed herein is a pointer detection apparatus, including: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction; a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply the signals of different frequencies to those first conductors, between which N ones of the first conductors are interposed, N being a predetermined integer equal to or greater than 0; a second conductor selection circuit configured to selectively receive detection signals from the second conductors; and a signal detection circuit configured to obtain signals of individual frequencies, corresponding to the signals of different frequencies produced by the multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductorsType: ApplicationFiled: March 30, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama
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Publication number: 20100321315Abstract: Disclosed herein is a pointer detection apparatus, including: a conductor pattern including a plurality of first conductors disposed in a first direction and a plurality of second conductors disposed in a second direction; a multi-frequency signal production circuit configured to produce a plurality of signals of different frequencies; a first conductor selection circuit configured to selectively supply the signals of different frequencies to those first conductors, between which N ones of the first conductors are interposed, N being a predetermined integer equal to or greater than 0; a second conductor selection circuit configured to selectively receive detection signals from the second conductors; and a signal detection circuit configured to obtain signals of individual frequencies, corresponding to the signals of different frequencies produced by the multi-frequency signal production circuit, which are representative of coupling states at cross points between the first conductors and the second conductorsType: ApplicationFiled: March 30, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama
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Publication number: 20100321332Abstract: A pointer detection apparatus includes a conductor pattern with first conductors disposed in a first direction and second conductors disposed in a second direction that crosses the first direction, and a code string signal production circuit for producing signals based on orthogonal code strings with phases different from each other and supplying the produced signals to the first conductors. The apparatus also includes a signal detection circuit connected to the second conductors for detecting a signal corresponding to a variation of electrostatic capacitance between the conductor pattern and a pointer, an analog to digital conversion (ADC) circuit for converting the signal output from the signal detection circuit into a digital signal comprising a word string of multiple bits, and a correlation detection circuit for determining correlation values between the code strings and the word string.Type: ApplicationFiled: March 25, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Publication number: 20100321331Abstract: A pointer detection apparatus includes a conductor pattern with first conductors disposed in a first direction and second conductors disposed in a second direction that crosses the first direction, and a code string signal production circuit for producing signals based on orthogonal code strings with phases different from each other and supplying the produced signals to the first conductors. The apparatus also includes a signal detection circuit connected to the second conductors for detecting a signal corresponding to a variation of electrostatic capacitance between the conductor pattern and a pointer, an analog to digital conversion (ADC) circuit for converting the signal output from the signal detection circuit into a digital signal comprising a word string of multiple bits, and a correlation detection circuit for determining correlation values between the code strings and the word string.Type: ApplicationFiled: March 25, 2010Publication date: December 23, 2010Applicant: WACOM CO., LTD.Inventors: Yasuo Oda, Yoshihisa Sugiyama, Sadao Yamamoto
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Patent number: 7150252Abstract: In a spark plug 100, the nickel content of a center electrode 20 is greater than that of a ground electrode 30. This enhances resistance to spark-induced consumption of the center electrode 20. Also, the ground electrode 30 to which a noble-metal chip 91 is joined exhibits high resistance to spark-induced consumption. Accordingly, the spark plug 100 can be attached to either of a negative-polarity cylinder in which the center electrode 20 assumes a negative polarity, and a positive-polarity cylinder in which the center electrode 20 assumes a positive polarity. The noble-metal chip 91 is joined only to the ground electrode 30, and a noble-metal chip is not joined to the center electrode 20.Type: GrantFiled: March 22, 2006Date of Patent: December 19, 2006Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshihisa Sugiyama, Katsutoshi Nakayama, Takeru Wakamatsu
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Publication number: 20060213474Abstract: In a spark plug 100, the nickel content of a center electrode 20 is greater than that of a ground electrode 30. This enhances resistance to spark-induced consumption of the center electrode 20. Also, the ground electrode 30 to which a noble-metal chip 91 is joined exhibits high resistance to spark-induced consumption. Accordingly, the spark plug 100 can be attached to either of a negative-polarity cylinder in which the center electrode 20 assumes a negative polarity, and a positive-polarity cylinder in which the center electrode 20 assumes a positive polarity. The noble-metal chip 91 is joined only to the ground electrode 30, and a noble-metal chip is not joined to the center electrode 20.Type: ApplicationFiled: March 22, 2006Publication date: September 28, 2006Inventors: Yoshihisa Sugiyama, Katsutoshi Nakayama, Takeru Wakamatsu
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Patent number: 6798125Abstract: In a spark plug (100), at least one side face of the ground electrode (4) is made of an electrode base material comprising an Ni alloy containing 21-25% by mass of Cr, 1-2% by mass of Al, 7-20% by mass of Fe and 58-71% by mass of Ni. The noble metal wear resistant portion (32) is joined to the electrode base material via a welding portion (W). When the linear expansion coefficients at 800 K of the noble metal constituting the noble metal wear resistant portion (32) and the electrode base material are represented by &agr;1 and &agr;2, respectively, &Dgr;&agr;≡&agr;2−&agr;1 is adjusted to be 4.55×10−6/K or less. The outer diameter of the noble material wear resistant portion (32) is set from 0.6 mm to 1.5 mm.Type: GrantFiled: October 30, 2002Date of Patent: September 28, 2004Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshihisa Sugiyama, Yoshitaka Sugiura
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Patent number: 6603244Abstract: A spark plug includes: a central electrode; an insulator surrounding the central electrode radially; a metallic shell surrounding the insulator radially; and a ground electrode having a first end connected to the metallic shell and a second end defining a side face. The ground electrode is so bent that the side face of the second end faces the central electrode. The ground electrode contains: a nickel in a range from 58% to 71% by weight, a chromium in a range from 21% to 25% by weight, an iron in a range from 7% to 20% by weight, and an aluminum in a range from 1% to 2% by weight. The ground electrode has a Vickers hardness in a range from Hv 140 to Hv 220 through a Vickers hardness test specified in Japanese Industrial Standard Z2244. A load 9.8 N is applied to the ground electrode in the hardness test.Type: GrantFiled: February 26, 2002Date of Patent: August 5, 2003Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshihisa Sugiyama, Tomoharu Suzuki, Kenichi Kumagai
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Publication number: 20030085644Abstract: In a spark plug (100), at least one side face of the ground electrode (4) is made of an electrode base material comprising an Ni alloy containing 21-25% by mass of Cr, 1-2% by mass of Al, 7-20% by mass of Fe and 58-71% by mass of Ni. The noble metal wear resistant portion (32) is joined to the electrode base material via a welding portion (W). When the linear expansion coefficients at 800 K of the noble metal constituting the noble metal wear resistant portion (32) and the electrode base material are represented by &agr;1 and &agr;2, respectively, &Dgr;&agr;≡&agr;2−&agr;1 is adjusted to be 4.55×10−6/K or less. The outer diameter of the noble material wear resistant portion (32) is set from 0.6 mm to 1.5 mm.Type: ApplicationFiled: October 30, 2002Publication date: May 8, 2003Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshihisa Sugiyama, Yoshitaka Sugiura
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Publication number: 20020158559Abstract: A spark plug includes: a central electrode; an insulator surrounding the central electrode radially; a metallic shell surrounding the insulator radially; and a ground electrode having a first end connected to the metallic shell and a second end defining a side face. The ground electrode is so bent that the side face of the second end faces the central electrode. The ground electrode contains: a nickel in a range from 58% to 71% by weight, a chromium in a range from 21% to 25% by weight, an iron in a range from 7% to 20% by weight, and an aluminum in a range from 1% to 2% by weight. The ground electrode has a Vickers hardness in a range from Hv 140 to Hv 220 through a Vickers hardness test specified in Japanese Industrial Standard Z2244. A load 9.8 N is applied to the ground electrode in the hardness test.Type: ApplicationFiled: February 26, 2002Publication date: October 31, 2002Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshihisa Sugiyama, Tomoharu Suzuki, Kenichi Kumagai