Patents by Inventor Takafumi Yuasa
Takafumi Yuasa 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: 20180275550Abstract: An optical writing apparatus includes: a light source panel including light emitting elements arranged on an elongate glass substrate; an optical member that causes emergent light to form an image; a first holding member holding the optical member; and a second holding member holding the glass substrate, wherein legs are provided below the first holding member on sides of both ends, the legs extending downward, drooping ends of the legs being mounted and fixed on the second holding member, one end of the glass substrate is positioned inside the space, an integrated circuit being provided, a through hole is provided to an upper surface of the second holding member, and when cooling air for the integrated circuit flows into the space, the cooling air is guided through the through hole to a side of a lower surface of the upper surface of the second holding member.Type: ApplicationFiled: March 20, 2018Publication date: September 27, 2018Inventors: Takafumi YUASA, Akira Taniyama, Hidenari Tachibe
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Publication number: 20180250952Abstract: An optical print head, including: an elongated substrate having a line-shaped region in which light-emitting elements are arranged; an optical member condensing light from the light-emitting elements onto an irradiation target; a holding member holding the optical member; a base member holding the substrate and the holding member; an integrated circuit mounted in a first region in proximity of an end in a longitudinal direction of the substrate on a first surface of the substrate facing the base member, heat being generated in the integrated circuit during optical writing; and a thermally conductive member between the integrated circuit and the base member. In the optical print head, the holding member has a support portion contacting the substrate in a second region at a position differing from the first region in plan view on a second surface of the substrate not facing the base member.Type: ApplicationFiled: February 22, 2018Publication date: September 6, 2018Inventors: Takafumi YUASA, Akira TANIYAMA, Hidenari TACHIBE
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Publication number: 20180249243Abstract: A loudspeaker device includes: a plurality of loudspeaker units; and a plurality of horns provided in the plurality of loudspeaker units, respectively, the plurality of horns each restricting spread of sound output from a corresponding one of the loudspeaker units to a predetermined range.Type: ApplicationFiled: August 8, 2016Publication date: August 30, 2018Inventors: KAZUKI HONDA, TAKAFUMI YUASA, AKIHISA KAWAMURA, TOSHIYUKI MATSUMURA, SHUJI SAIKI, SATOSHI TAKAYAMA, SUEMEI FUKUHARA, ISAO KURAMITSU, IPPEI KIYAMA
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Publication number: 20180242061Abstract: A loudspeaker device includes: a loudspeaker housing; a first loudspeaker unit provided in a first wall of the loudspeaker housing; and an acoustic tube communicating an inside and an outside of the loudspeaker housing to each other. The acoustic tube has a predetermined length, and is accommodated in the loudspeaker housing while spirally bent.Type: ApplicationFiled: August 8, 2016Publication date: August 23, 2018Inventors: KAZUKI HONDA, TAKAFUMI YUASA, AKIHISA KAWAMURA, TOSHIYUKI MATSUMURA, SHUJI SAIKI, SATOSHI TAKAYAMA, SUEMEI FUKUHARA, ISAO KURAMITSU, IPPEI KIYAMA
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Publication number: 20180017917Abstract: In a displacement sensor, an illumination optical system, which converts laser light emitted from an emission unit into first converging light, and irradiates with the first converging light a detection space through which a target moves. An imaging optical system converts laser light reflected from the target into second converging light, and irradiates with the second converging light a light-receiving surface of a detection unit. The image of the emission unit into which the illumination optical system focuses the first converging light is displaced along the optical axis of the imaging optical system by a temperature change of the illumination optical system. The range in which the image is displaced is limited to be located either anterior to the front principal point of the imaging optical system, or posterior to the rear principal point of the imaging optical system.Type: ApplicationFiled: July 5, 2017Publication date: January 18, 2018Applicant: Konica Minolta, Inc.Inventors: Masahiko TAKAHASHI, Makoto OOKI, Wataru SENOO, Atsushi NAGAOKA, Hidenari TACHIBE, Hajime TANIGUCHI, Takafumi YUASA, Yoshitaka OTANI
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Patent number: 9820047Abstract: A method is provided for causing a processor included in a speaker system to execute operations. The operations include acquiring, using a measurement microphone, reflected sound information regarding an effect of sounds that are played back by a plurality of speakers having predetermined directivity and that are reflected off an object, where the plurality of speakers are included in the speaker system. The operations also include calculating correction coefficients used to correct acoustic characteristics of the plurality of speakers on the basis of the acquired reflected sound information. The operations further include correcting the acoustic characteristics of the plurality of speakers using the calculated correction coefficients.Type: GrantFiled: August 25, 2016Date of Patent: November 14, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Akihisa Kawamura, Toshiyuki Matsumura, Isao Kakuhari, Shuji Saiki, Satoshi Takayama, Kazuki Honda, Takafumi Yuasa
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Patent number: 9813820Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm has an inner circumferential end including an end face facing the light-emitting element, and a light guide having a reflecting surface formed thereon and provided at a position where light enters from the end face. The first end of the voice coil bobbin is joined to the inner circumferential end of the diaphragm, and the second end is inserted into the magnetic gap. The voice coil is wound around the second end of the voice coil bobbin. Light from the light-emitting element enters the end face of the diaphragm, is diffused by the light guide, and is reflected on the reflecting surface.Type: GrantFiled: February 23, 2015Date of Patent: November 7, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takafumi Yuasa, Kenji Yamauchi, Satoshi Takayama, Koichi Nakayama, Ryo Kuribayashi
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Patent number: 9774935Abstract: A speaker device for reproducing an audio signal includes a first speaker including a first diaphragm and a first magnetic circuit that drives the first diaphragm, where the first diaphragm reproduces an audio signal including a predetermined frequency range, a second speaker including a second diaphragm and a second magnetic circuit that drives the second diaphragm, where the second diaphragm reproduces an audio signal including a frequency range substantially the same as the predetermined frequency range, and at least one cabinet having the first speaker and the second speaker mounted therein so that radiation directions of sounds are opposite to each other. At least part of a space formed between the first speaker and the second speaker communicates with the outside of the cabinet. When the speaker device reproduces the audio signal, the first diaphragm and the second diaphragm vibrate in opposite directions.Type: GrantFiled: August 25, 2016Date of Patent: September 26, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Toshiyuki Matsumura, Akihisa Kawamura, Kazuki Honda, Takafumi Yuasa, Shuji Saiki, Satoshi Takayama
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Patent number: 9628916Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm includes an inner peripheral end portion having an end face to which a light-emitting element is coupled, a light-guide portion, a reflective surface, and an outer peripheral end portion coupled to the frame. The first end of the voice coil bobbin is coupled to the inner peripheral end portion of the diaphragm, and the second end thereof is inserted into the magnetic gap. A voice coil is wound on the second end of the voice coil bobbin.Type: GrantFiled: March 23, 2015Date of Patent: April 18, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takafumi Yuasa, Kenji Yamauchi, Satoshi Takayama, Koichi Nakayama, Ryo Kuribayashi
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Patent number: 9619228Abstract: The data processor includes CPU operable to execute an instruction included in an instruction set. The instruction set includes a load instruction for reading data on a memory space. The data read according to the load instruction includes data of a format type having a data-read-branching-occurrence bit region. The CPU includes a data-read-branching control register; a data-read-branching address register; and a read-data-analyzing unit. On condition that a bit value showing the occurrence of data read branching has been set on the data-read-branching-occurrence bit region, and a value showing the data-read-branching-occurrence bit remaining valid has been set on the data-read-branching control register, the switching between processes is performed by branching to an address stored in the data-read-branching address register.Type: GrantFiled: March 28, 2011Date of Patent: April 11, 2017Assignee: Renesas Electronics CorporationInventors: Takafumi Yuasa, Hiroaki Nakata, Motoki Kimura, Kazushi Akie
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Patent number: 9596545Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm includes an inner peripheral end portion having an end face to which a light-emitting element is coupled, a light-guide portion, a reflective surface, and an outer peripheral end portion coupled to the frame. The first end of the voice coil bobbin is coupled to the inner peripheral end portion of the diaphragm, and the second end thereof is inserted into the magnetic gap. A voice coil is wound on the second end of the voice coil bobbin.Type: GrantFiled: March 23, 2015Date of Patent: March 14, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takafumi Yuasa, Kenji Yamauchi, Satoshi Takayama, Koichi Nakayama, Ryo Kuribayashi
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Publication number: 20170064448Abstract: A method causing a processor included in a speaker system to execute operations includes acquiring, using a measurement microphone, reflected sound information regarding an effect of sounds that are played back by a plurality of speakers having predetermined directivity and that are reflected off an object, where the plurality of speakers are included in the speaker system, calculating correction coefficients used to correct acoustic characteristics of the plurality of speakers on the basis of the acquired reflected sound information, and correcting the acoustic characteristics of the plurality of speakers using the calculated correction coefficients.Type: ApplicationFiled: August 25, 2016Publication date: March 2, 2017Inventors: AKIHISA KAWAMURA, TOSHIYUKI MATSUMURA, ISAO KAKUHARI, SHUJI SAIKI, SATOSHI TAKAYAMA, KAZUKI HONDA, TAKAFUMI YUASA
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Publication number: 20170064421Abstract: A speaker device for reproducing an audio signal includes a first speaker including a first diaphragm and a first magnetic circuit that drives the first diaphragm, where the first diaphragm reproduces an audio signal including a predetermined frequency range, a second speaker including a second diaphragm and a second magnetic circuit that drives the second diaphragm, where the second diaphragm reproduces an audio signal including a frequency range substantially the same as the predetermined frequency range, and at least one cabinet having the first speaker and the second speaker mounted therein so that radiation directions of sounds are opposite to each other. At least part of a space formed between the first speaker and the second speaker communicates with the outside of the cabinet. When the speaker device reproduces the audio signal, the first diaphragm and the second diaphragm vibrate in opposite directions.Type: ApplicationFiled: August 25, 2016Publication date: March 2, 2017Inventors: TOSHIYUKI MATSUMURA, AKIHISA KAWAMURA, KAZUKI HONDA, TAKAFUMI YUASA, SHUJI SAIKI, SATOSHI TAKAYAMA
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Publication number: 20160286318Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm has an inner circumferential end including an end face facing the light-emitting element, and a light guide having a reflecting surface formed thereon and provided at a position where light enters from the end face. The first end of the voice coil bobbin is joined to the inner circumferential end of the diaphragm, and the second end is inserted into the magnetic gap. The voice coil is wound around the second end of the voice coil bobbin. Light from the light-emitting element enters the end face of the diaphragm, is diffused by the light guide, and is reflected on the reflecting surface.Type: ApplicationFiled: February 23, 2015Publication date: September 29, 2016Inventors: TAKAFUMI YUASA, KENJI YAMAUCHI, SATOSHI TAKAYAMA, KOICHI NAKAYAMA, RYO KURIBAYASHI
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Publication number: 20160234601Abstract: A loudspeaker includes a light-emitting element, a frame, a magnetic circuit provided with a magnetic gap, a diaphragm, a voice coil bobbin, and a voice coil. The diaphragm includes an inner peripheral end portion having an end face to which a light-emitting element is coupled, a light-guide portion, a reflective surface, and an outer peripheral end portion coupled to the frame. The first end of the voice coil bobbin is coupled to the inner peripheral end portion of the diaphragm, and the second end thereof is inserted into the magnetic gap. A voice coil is wound on the second end of the voice coil bobbin.Type: ApplicationFiled: March 23, 2015Publication date: August 11, 2016Inventors: Takafumi YUASA, Kenji YAMAUCHI, Satoshi TAKAYAMA, Koichi NAKAYAMA, Ryo KURIBAYASHI
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Patent number: 9288366Abstract: An optical scanning device comprises: photoreceptors corresponding one-to-one to solid colors; high-resolution light sources each emitting a set of beams irradiating the corresponding photoreceptor with a predetermined distance therebetween along a sub-scanning direction; a deflection unit; a first optical system directing the sets of beams from the high-resolution light sources to the deflection unit; a low-resolution light source emitting a set of beams irradiating a predetermined photoreceptor with a distance therebetween larger than the predetermined distance along the sub-scanning direction; and a second optical system directing all of the sets of beams to the corresponding photoreceptor.Type: GrantFiled: September 1, 2011Date of Patent: March 15, 2016Assignee: KONICA MINOLTA, INC.Inventors: Hajime Taniguchi, Hidenari Tachibe, Takafumi Yuasa, Yoshitaka Otani
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Patent number: 9131304Abstract: A loudspeaker is provided which includes: a magnetic circuit including a magnet having at least one hole, a plate fixed to one of a pair of polar surfaces of the magnet, and a box-shaped yoke having an inner bottom surface fixed to the other polar surface of the magnet; a voice coil vertically vibratably provided in a magnetic gap formed by the plate and the yoke; a diaphragm having a peripheral edge connected to an upper end of the voice coil; and a magnetic fluid filled in at least one of a gap between the voice coil and the plate and a gap between the voice coil and the yoke. The loudspeaker includes at least one means for uniformly distributing the magnetic fluid.Type: GrantFiled: June 19, 2013Date of Patent: September 8, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Sawako Kano, Akiko Fujise, Takafumi Yuasa
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Patent number: 8884792Abstract: Variable length code decoding device for decoding variable length code data, including: decoding process tables each including at least two kinds of formats consisting a first format storing identification information for designating a subsequent table to be referred to in a subsequent decoding process, and a second format that stores a decoded value obtained by repeating the decoding process and a significant bit length to be referred to with respect to variable length code data. The device utilizes first, second, third and fourth formats and relative addresses.Type: GrantFiled: September 4, 2012Date of Patent: November 11, 2014Assignee: Renesas Electronics CorporationInventors: Hiroaki Nakata, Fumitaka Izuhara, Kazushi Akie, Takafumi Yuasa
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Publication number: 20140205135Abstract: A loudspeaker is provided which includes: a magnetic circuit including a magnet having at least one hole, a plate fixed to one of a pair of polar surfaces of the magnet, and a box-shaped yoke having an inner bottom surface fixed to the other polar surface of the magnet; a voice coil vertically vibratably provided in a magnetic gap formed by the plate and the yoke; a diaphragm having a peripheral edge connected to an upper end of the voice coil; and a magnetic fluid filled in at least one of a gap between the voice coil and the plate and a gap between the voice coil and the yoke. The loudspeaker includes at least one means for uniformly distributing the magnetic fluid.Type: ApplicationFiled: June 19, 2013Publication date: July 24, 2014Inventors: Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Sawako Kano, Akiko Fujise, Takafumi Yuasa
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Patent number: 8483279Abstract: A moving image processor includes a first and a second moving image processing unit which are able to perform parallel operation, and a data transfer unit having a first buffer and a second buffer. The first moving image processing unit processes macroblocks MB00, - - - , of one row of one image sequentially, and the second moving image processing unit processes macroblocks MB10, - - - , of the next row sequentially. The first and the second moving image processors include a first and a second deblocking filters, respectively. Operation timing of the second filter is delayed by the processing time of two macroblocks, compared with operation timing of the first filter. The processing results of the first filter and the second filter are transferred to an external memory via the first buffer and the second buffer of the transfer unit.Type: GrantFiled: June 21, 2010Date of Patent: July 9, 2013Assignee: Renesas Electronics CorporationInventors: Yoshitaka Hiramatsu, Hiroaki Nakata, Masakazu Ehama, Seiji Mochizuki, Takafumi Yuasa, Kenichi Iwata