Patents by Inventor Daishiro Sekijima
Daishiro Sekijima 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: 9374888Abstract: A low pass filter 6 comprises an inductor unit 8 comprising first and second inductors 11 and 12, an input side capacitor unit 7 provided on a signal input side of the inductor unit 8, and an output side capacitor unit 9 provided on a signal output side of the inductor unit 8. The input side capacitor unit 7 comprises a first capacitor 21 provided between the signal lines. Further, the input side capacitor unit 7 comprises a second capacitor 22 wherein one end is connected to a signal input end 11a of the first inductor 11, and the other end is connected to a ground (GND), and a third capacitor 23 wherein one end is connected to a signal input end 12a of the second inductor 12, and the other end is connected to a ground (GND).Type: GrantFiled: September 10, 2012Date of Patent: June 21, 2016Assignee: CANON KABUSHIKI KAISHAInventor: Daishiro Sekijima
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Patent number: 9042133Abstract: A power source circuit includes a switching circuit 4 that converts a direct current voltage obtained by converting an alternating voltage from an alternating power source input through a pair of power supply lines 2 and 3 into a predetermined direct current voltage by a switching operation. A fuse 5 is provided on one power supply line 2. A series circuit 9 including a first line bypass capacitor 7 and a resistor element 8 is connected between one power supply line 2 and a ground 6. A second line bypass capacitor 10 is connected between the other power supply line 3 and the ground 6. Imbalance of the circuit by an excess current protection element is prevented to reduce common mode noise.Type: GrantFiled: January 24, 2012Date of Patent: May 26, 2015Assignee: CANON KABUSHIKI KAISHAInventors: Takeshi Ide, Daishiro Sekijima
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Patent number: 8929105Abstract: In a power source circuit including a switching circuit 8 as a power conversion circuit for converting by a switching operation at least one of a frequency and a voltage of an alternating voltage from an alternating power source 2 via a pair of supply lines 3 and 4, one supply line 3 includes a fuse 5 as an excess current protection element, and between a ground line 10 and one supply line 3, a first line bypass capacitor 6 is connected. Between the ground line 10 and another supply line 4, a second line bypass capacitor 7 is connected, and another supply line 4 includes an inductor 9. With this configuration, an unbalanced state of the circuit due to the excess current protection element is reduced so as to restrain the common mode noise.Type: GrantFiled: July 15, 2011Date of Patent: January 6, 2015Assignee: Canon Kabushiki KaishaInventors: Takeshi Ide, Daishiro Sekijima
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Publication number: 20140340167Abstract: A low pass filter 6 comprises an inductor unit 8 comprising first and second inductors 11 and 12, an input side capacitor unit 7 provided on a signal input side of the inductor unit 8, and an output side capacitor unit 9 provided on a signal output side of the inductor unit 8. The input side capacitor unit 7 comprises a first capacitor 21 provided between the signal lines. Further, the input side capacitor unit 7 comprises a second capacitor 22 wherein one end is connected to a signal input end 11a of the first inductor 11, and the other end is connected to a ground (GND), and a third capacitor 23 wherein one end is connected to a signal input end 12a of the second inductor 12, and the other end is connected to a ground (GND).Type: ApplicationFiled: September 10, 2012Publication date: November 20, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Daishiro Sekijima
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Patent number: 8608276Abstract: A liquid discharge head includes a heat generating element which generates heat energy used to discharge a liquid; a temperature detecting element which changes in output voltage in response to a change in the temperature of the heat generating element; an electrical power source line and a grounding line electrically connected to each other through the heat generating element to apply a current to the heat generating element; and a pair of lines for temperature detection electrically connected to each other through the temperature detecting element to apply a current to the temperature detecting element. Here, each of the pair of lines for temperature detection is arranged adjacent to the other.Type: GrantFiled: April 28, 2011Date of Patent: December 17, 2013Assignee: Canon Kabushiki KaishaInventors: Ryoji Oohashi, Yoshiyuki Imanaka, Kazunori Masuda, Daishiro Sekijima, Takashi Aoki
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Publication number: 20130301319Abstract: A power source circuit includes a switching circuit 4 that converts a direct current voltage obtained by converting an alternating voltage from an alternating power source input through a pair of power supply lines 2 and 3 into a predetermined direct current voltage by a switching operation. A fuse 5 is provided on one power supply line 2. A series circuit 9 including a first line bypass capacitor 7 and a resistor element 8 is connected between one power supply line 2 and a ground 6. A second line bypass capacitor 10 is connected between the other power supply line 3 and the ground 6. Imbalance of the circuit by an excess current protection element is prevented to reduce common mode noise.Type: ApplicationFiled: January 24, 2012Publication date: November 14, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Takeshi Ide, Daishiro Sekijima
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Publication number: 20130114305Abstract: In a power source circuit including a switching circuit 8 as a power conversion circuit for converting by a switching operation at least one of a frequency and a voltage of an alternating voltage from an alternating power source 2 via a pair of supply lines 3 and 4, one supply line 3 includes a fuse 5 as an excess current protection element, and between a ground line 10 and one supply line 3, a first line bypass capacitor 6 is connected. Between the ground line 10 and another supply line 4, a second line bypass capacitor 7 is connected, and another supply line 4 includes an inductor 9. With this configuration, an unbalanced state of the circuit due to the excess current protection element is reduced so as to restrain the common mode noise.Type: ApplicationFiled: July 15, 2011Publication date: May 9, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Takeshi Ide, Daishiro Sekijima
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Publication number: 20110292127Abstract: A liquid discharge head includes a recording element substrate having an energy generating element generating energy used to discharge liquid, a temperature detecting element changing in output voltage upon temperature change of the energy generating element, and line connection pads electrically connected to the energy generating element and the temperature detecting element; external connection pads electrically connected to the outside of the head; and an electrical wiring substrate having electrical power source line for connecting a first external connection pad connected to an external electrical power source, with the energy generating element, grounding line for connecting a second external connection pad connected to an external grounding terminal, with the energy generating element, and electrode for connecting a third external connection pad connected to an external circuit, with the temperature detecting element.Type: ApplicationFiled: May 24, 2011Publication date: December 1, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Ryoji Oohashi, Yoshiyuki Imanaka, Kazunori Masuda, Daishiro Sekijima, Takashi Aoki
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Publication number: 20110292112Abstract: A liquid discharge head includes a heat generating element which generates heat energy used to discharge a liquid; a temperature detecting element which changes in output voltage in response to a change in the temperature of the heat generating element; an electrical power source line and a grounding line electrically connected to each other through the heat generating element to apply a current to the heat generating element; and a pair of lines for temperature detection electrically connected to each other through the temperature detecting element to apply a current to the temperature detecting element. Here, each of the pair of lines for temperature detection is arranged adjacent to the other.Type: ApplicationFiled: April 28, 2011Publication date: December 1, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Ryoji Oohashi, Yoshiyuki Imanaka, Kazunori Masuda, Daishiro Sekijima, Takashi Aoki
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Patent number: 7453699Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: GrantFiled: January 19, 2007Date of Patent: November 18, 2008Assignee: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Publication number: 20070117427Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: ApplicationFiled: January 19, 2007Publication date: May 24, 2007Applicant: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Patent number: 7189923Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: GrantFiled: December 23, 2004Date of Patent: March 13, 2007Assignee: Canon Kabushiki KaishaInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin′ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Patent number: 7154050Abstract: A cable arranging structure for exchanging electric signals between a pair of printed circuit boards includes at least a pair of electrically conductive members adapted to arrange the cable between them over the entire length thereof. The electrically conductive members show an electric potential substantially equal to that of the ground. Such a structure requires only the two electrically conductive members to be rigidly secured so that radiant noises generated by the cable can be effectively suppressed by means of the structure without the need of deforming the cable.Type: GrantFiled: September 30, 2003Date of Patent: December 26, 2006Assignee: Canon Kabushiki KaishaInventors: Daishiro Sekijima, Hideho Inagawa, Satoshi Sugimoto, Seiji Hayashi, Shinichi Nishimura
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Publication number: 20050139369Abstract: A digital electronic apparatus includes a plurality of units and a cable. The plurality of units have metallic housings and are combined such that surfaces of the metallic housings are opposed to each other. The cable is laid on a surface of the metallic housing of at least one of the units. The surface on which the cable is laid is other than the surfaces of the metallic housings that are opposed to each other.Type: ApplicationFiled: December 23, 2004Publication date: June 30, 2005Applicant: CANON KABUSHIKI KAISHIInventors: Hideho Inagawa, Hiroyuki Yamaguchi, Shin'ichi Nishimura, Daishiro Sekijima, Tsunao Hombo, Masafumi Kamei
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Publication number: 20040065472Abstract: A cable arranging structure for exchanging electric signals between a pair of printed circuit boards comprises at least a pair of electrically conductive members adapted to arrange the cable between them over the entire length thereof. The electrically conductive members show an electric potential substantially equal to that of the ground. Such a structure requires only the two electrically conductive members to be rigidly secured so that radiant noises generated by the cable can be effectively suppressed by means of the structure without the need of deforming the cable.Type: ApplicationFiled: September 30, 2003Publication date: April 8, 2004Inventors: Daishiro Sekijima, Hideho Inagawa, Satoshi Sugimoto, Seiji Hayashi, Shinichi Nishimura