Patents by Inventor Takashi Kosaka
Takashi Kosaka 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: 8494355Abstract: An image pickup apparatus is provided that can switch between an optical viewfinder mode for identifying an object using an optical viewfinder and a live view mode for identifying an image of an object using a monitor. The apparatus includes an auto-focus unit able to be configured in the optical viewfinder mode; and a control unit configured to switch, in a case where a mode for performing exposure control in association with an auto-focus result obtained by the auto-focus unit is set, when the optical viewfinder mode is switched to the live view mode, to a mode for performing exposure control not in association with the auto-focus result.Type: GrantFiled: March 23, 2011Date of Patent: July 23, 2013Assignee: Canon Kabushiki KaishaInventor: Takashi Kosaka
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Patent number: 8471935Abstract: An imaging apparatus includes an image sensor configured to capture an object image, a selection unit configured to automatically select a sensitivity of the image sensor from a predetermined selectable range, and an image processing unit configured to execute correction processing in which a signal of an image captured by the image sensor which has the sensitivity selected by the selection unit is amplified. When the image processing unit is set to execute the correction processing, the selection unit sets an upper limit of the selectable range lower, compared with the upper limit thereof when the image processing unit is not set to execute the correction processing.Type: GrantFiled: September 28, 2009Date of Patent: June 25, 2013Assignee: Canon Kabushiki KaishaInventor: Takashi Kosaka
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Patent number: 8393805Abstract: An image capturing apparatus includes a shutter spring which urges a shutter drive member for driving shutter blades, a shutter charge unit which is used to charge the shutter spring, and is switched between a fixed state in which a charge operation of the shutter spring is complete, and the shutter drive member is fixed and a released state, and a drive unit which drives the shutter charge unit. When a second determination unit determines that a switching ready state of a mirror from a mirror-down state to a mirror-up state is set when a first determination unit determines that a charge operation of the shutter spring is complete, the drive unit is controlled to drive the shutter charge unit to the released state without latch the shutter charge unit in the fixed state after the charge operation of the shutter spring is complete.Type: GrantFiled: August 4, 2010Date of Patent: March 12, 2013Assignee: Canon Kabushiki KaishaInventor: Takashi Kosaka
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Publication number: 20120223600Abstract: A rotary electric machine includes a rotor core, a stator, a field yoke, and a field winding. The rotor core is fixed to a rotary shaft, which includes a magnetic body for forming a magnetic path, and magnetic salient poles. The stator has teeth and a stator winding wound around the teeth by concentrated winding. A slot is formed between adjacent ones of the teeth in a circumferential direction. The field yoke magnetically connects the stator and the magnetic body. The field winding is located in proximity to at least one of the winding ends of the stator winding in an axial direction of the rotary shaft. The field winding generates a magnetic pole on the magnetic salient poles when energized.Type: ApplicationFiled: February 28, 2012Publication date: September 6, 2012Applicants: NATIONAL UNIVERSITY CORPORATION NAGOYA INSTITUTE OF TECHNOLOGY, KABUSHIKI KAISHA TOYOTA JIDOSHOKKIInventors: Kazuki TONOGI, Toshihiko YOSHIDA, Norimoto MINOSHIMA, Nobuyuki MATSUI, Takashi KOSAKA, Hiroshi NISHIMURA, Masaki SAIJO, Masashi WATANABE, Yasuhiro TAKAGI, Kaoru YOSHIKAWA
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Patent number: 8243811Abstract: Noise filtering data compression removes noise differences from successive frames in a video signal. This is accommodated by accessing successive frames corresponding to a video signal. Frequency domain representations, for example first row and first column coefficients in the quantized DCT result matrix, are used to determine whether the block in the current frame should be considered identical to the corresponding block in the previous frame. If such is the case, the block data is rendered identical such as by overwriting one for the other. This removes any noise differential between the corresponding blocks from the successive frames.Type: GrantFiled: November 29, 2007Date of Patent: August 14, 2012Assignee: Takashi KosakaInventor: Takashi Kosaka
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Patent number: 8197984Abstract: A fuel cell stack includes a box-shaped casing and a stack body in the box-shaped casing. The stack body is formed by stacking a plurality of unit cells. The casing includes end plates, a plurality of side plates, angle members, and coupling pins. The angle members couple adjacent ends of the side plates. The coupling pins couple the end plates and the side plates.Type: GrantFiled: July 23, 2004Date of Patent: June 12, 2012Assignee: Honda Motor Co., Ltd.Inventors: Narutoshi Sugita, Takashi Kosaka, Ayumu Ishizuka, Ken Takahashi, Hiroshi Morikawa, Teruyuki Ohtani
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Patent number: 8110316Abstract: A first metal separator of one of adjacent power generation cells and a second metal separator of the other of the adjacent power generation cells are directly stacked together to form a coolant flow field. The first metal separator has a press line protruding toward the coolant flow field, between a fuel gas flow field and an inlet buffer. The second metal separator has a press line protruding toward the coolant flow field, between an oxygen-containing gas flow field and an inlet buffer. The press lines contact each other to limit flow of the coolant into a back surface buffer.Type: GrantFiled: May 23, 2008Date of Patent: February 7, 2012Assignee: Honda Motor Co., Ltd.Inventors: Masaru Oda, Takashi Kosaka, Norimasa Kawagoe, Teruyuki Ohtani, Narutoshi Sugita, Masaaki Sakano, Masahiro Mohri
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Patent number: 8053125Abstract: A first seal member is formed integrally on both surfaces of a first metal plate. The first seal member is integrally formed on a cooling surface of the first metal plate, except a region corresponding to a reaction surface facing an electrode reaction surface, and except regions of inlet buffers and outlet buffers. The first seal member has an expansion. The position of an end surface of the expansion substantially matches the position of a wall surface of the outermost groove of a coolant flow field to prevent the flow of a coolant around the electrode reaction surface.Type: GrantFiled: March 16, 2005Date of Patent: November 8, 2011Assignee: Honda Motor Co., Ltd.Inventors: Takaki Nakagawa, Takahiro Yoshida, Hiroyuki Tanaka, Takashi Kosaka
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Patent number: 8044633Abstract: An electric motor has a field pole formed by a field current passing through a field winding. A voltage booting converter converts output voltage of a battery and outputs the voltage between a power source line and a grounding line. Field winding is electrically connected onto an electric current channel between battery and power source line and formed so that voltage switched by a switching element is applied to both ends. A controller controls the field current so as to adjust density of magnetic flux between a rotor and a stator by performing switching control on switching element and a switching element connected in parallel to field winding and converts the output voltage of battery into voltage in accordance with a voltage command value.Type: GrantFiled: March 14, 2008Date of Patent: October 25, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazutaka Tatematsu, Ryoji Mizutani, Eiji Yamada, Nobuyuki Matsui, Takashi Kosaka
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Patent number: 8034506Abstract: A fuel gas flow field is formed on a surface of a rectangular first metal separator. The fuel gas flow field includes flow grooves extending in the direction of gravity. An outlet buffer is provided at a lower end of the fuel gas flow field. The outlet buffer includes an inclined surface inclined toward a fuel gas discharge passage. The fuel gas discharge passage is positioned below the outlet buffer. Outlet channel grooves are formed by ridges provided between the fuel gas discharge passage and the outlet buffer. Lower ends of the ridges are arranged in a zigzag pattern.Type: GrantFiled: March 1, 2007Date of Patent: October 11, 2011Assignee: Honda Motor Co., Ltd.Inventors: Hideaki Kikuchi, Narutoshi Sugita, Norimasa Kawagoe, Masaru Oda, Takashi Kosaka, Takeshi Banba, Yasuhiro Watanabe
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Publication number: 20110241598Abstract: An electric motor driving device that drives an electric motor including a field winding, a rotor and a stator, wherein the rotor and the stator each foam a field pole by passing a field current through the field winding, includes: a power supply device; a converter including a reactor that at least partially serves as the field winding shared with the electric motor, and configured to receive a voltage from the power supply device to carry out voltage conversion between first and second power lines and to pass the field current through the field winding during voltage conversion operation; an inverter configured to convert a direct-current power received from the converter to an alternating-current power for driving the electric motor; and a controller controlling the converter so that a current flows through the field winding in the same direction both during power running and regeneration of the electric motor.Type: ApplicationFiled: April 6, 2011Publication date: October 6, 2011Applicants: Toyota Jidosha Kabushiki Kaisha, National University Corporation Nagoya Institute of TechnologyInventors: Eiji Yamada, Ryoji Mizutani, Nobuyuki Matsui, Takashi Kosaka
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Patent number: 8023030Abstract: An image pickup apparatus includes a display that displays photographing information. When the display is turned off in response to an operation performed by a user, the photographing information is prevented from being changed even if a button or a dial for changing a set value, such as a shutter speed or an aperture value, is operated.Type: GrantFiled: August 1, 2007Date of Patent: September 20, 2011Assignee: Canon Kabushiki KaishaInventor: Takashi Kosaka
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Publication number: 20110194018Abstract: An image capturing apparatus capable of switching between an optical viewfinder and live view which involves periodically reading out an image signal out of an image sensor and sequentially displaying the image signal on a display unit, comprises a phase difference focus control unit that performs auto focus control using a phase difference detection method; a selection unit that selects one of a plurality of focus detection areas used for the auto focus control; an electronic zoom unit that changes an angle of view; and a control unit that causes the phase difference focus control unit to perform auto focus control by the phase difference detection method using the selected focus detection area if the selected focus detection area is located within the changed angle of view, otherwise not to perform auto focus control by the phase difference detection method using the selected focus detection area.Type: ApplicationFiled: February 2, 2011Publication date: August 11, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Takashi Kosaka
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Publication number: 20110170848Abstract: An image pickup apparatus is provided that can switch between an optical viewfinder mode for identifying an object using an optical viewfinder and a live view mode for identifying an image of an object using a monitor. The apparatus includes an auto-focus unit able to be configured in the optical viewfinder mode; and a control unit configured to switch, in a case where a mode for performing exposure control in association with an auto-focus result obtained by the auto-focus unit is set, when the optical viewfinder mode is switched to the live view mode, to a mode for performing exposure control not in association with the auto-focus result.Type: ApplicationFiled: March 23, 2011Publication date: July 14, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Takashi Kosaka
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Patent number: 7969056Abstract: A rotating electric motor includes a stator core, a rotational shaft capable of rotation, a field yoke allowing a flow of magnetic flux in an axial direction, first and second rotor cores fixedly installed on the rotational shaft, a first magnet fixedly installed between the first rotor core and the second rotor core, a first rotor teeth formed at the first rotor core, a second magnet provided alongside of the first rotor teeth in the circumferential direction of the first rotor core, a second rotor teeth formed at the outer surface of the second rotor core, protruding outwardly in the radial direction, a third magnet provided alongside of the second rotor core in the axial direction, and windings that can control the density of magnetic flux between at least one of the first rotor core and second rotor core and the stator core.Type: GrantFiled: January 29, 2008Date of Patent: June 28, 2011Assignees: Toyota Jidosha Kabushiki Kaisha, National University Corporation Nagoya Institute of TechnologyInventors: Ryoji Mizutani, Kazutaka Tatematsu, Eiji Yamada, Nobuyuki Matsui, Takashi Kosaka
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Patent number: 7917025Abstract: An image pickup apparatus is provided that can switch between an optical viewfinder mode for identifying an object using an optical viewfinder and a live view mode for identifying an image of an object using a monitor. The apparatus includes an auto-focus unit able to be configured in the optical viewfinder mode; and a control unit configured to switch, in a case where a mode for performing exposure control in association with an auto-focus result obtained by the auto-focus unit is set, when the optical viewfinder mode is switched to the live view mode, to a mode for performing exposure control not in association with the auto-focus result.Type: GrantFiled: April 18, 2008Date of Patent: March 29, 2011Assignee: Canon Kabushiki KaishaInventor: Takashi Kosaka
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Publication number: 20110050952Abstract: An image capturing apparatus includes a shutter spring which urges a shutter drive member for driving shutter blades, a shutter charge unit which is used to charge the shutter spring, and is switched between a fixed state in which a charge operation of the shutter spring is complete, and the shutter drive member is fixed and a released state, and a drive unit which drives the shutter charge unit. When a second determination unit determines that a switching ready state of a mirror from a mirror-down state to a mirror-up state is set when a first determination unit determines that a charge operation of the shutter spring is complete, the drive unit is controlled to drive the shutter charge unit to the released state without latch the shutter charge unit in the fixed state after the charge operation of the shutter spring is complete.Type: ApplicationFiled: August 4, 2010Publication date: March 3, 2011Applicant: CANON KABUSHIKI KAISHAInventor: Takashi Kosaka
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Patent number: 7790326Abstract: A unit cell of a fuel cell includes a membrane electrode assembly and an anode side metal separator and a cathode side metal separator sandwiching the membrane electrode assembly. A plurality of first supply holes and a plurality of second supply holes extend through a channel unit of the anode side metal separator, and the channel unit connects a fuel gas supply passage and a fuel gas flow field. A fuel gas from the fuel gas supply passage flows into the first supply holes, and flows through an inlet connection channel. The fuel gas flows into the second supply holes connected to an end of the inlet connection channel. The fuel gas flows toward the side of the membrane electrode assembly, and then, the fuel gas is supplied to an anode.Type: GrantFiled: June 20, 2006Date of Patent: September 7, 2010Assignee: Honda Motor Co., Ltd.Inventors: Narutoshi Sugita, Takashi Kosaka, Shuji Sato, Takeshi Muro, Masaaki Sakano
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Patent number: 7755243Abstract: A rotating electric motor includes a rotary shaft capable of rotation, a stator core formed in a cylindrical configuration, a rotor core fixed to the rotary shaft, a magnet set at the rotor core such that a pair of magnetic poles of different magnetism are aligned in the radial direction of the rotor core, a field yoke provided at the perimeter of the stator core, and a winding that can control the magnetic flux density across the rotor core and the stator core by forming a magnetic circuit across the field yoke and the rotor core.Type: GrantFiled: February 16, 2007Date of Patent: July 13, 2010Assignees: Toyota Jidosha Kabushiki Kaisha, Nagoya Institute of TechnologyInventors: Ryoji Mizutani, Kazutaka Tatematsu, Eiji Yamada, Nobuyuki Matsui, Takashi Kosaka
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Patent number: 7695845Abstract: Each of power generation units of a fuel cell according to the present invention is formed by stacking a first metal separator, a first membrane electrode assembly, a second metal separator, a second membrane electrode assembly, and a third metal separator together. The power generation unit has therein a first oxygen-containing gas flow field, a first fuel gas flow field, a second oxygen-containing gas flow field, and a second fuel gas flow field. The number of flow grooves in the first oxygen-containing gas flow field is different from that of flow grooves in the second oxygen-containing gas flow field, and the number of flow grooves in the first fuel gas flow field is different from that of flow grooves in the second fuel gas flow field.Type: GrantFiled: June 26, 2008Date of Patent: April 13, 2010Assignee: Honda Motor Co., Ltd.Inventors: Narutoshi Sugita, Masaru Oda, Masaaki Sakano, Norimasa Kawagoe, Takashi Kosaka