Patents by Inventor Chikara Kobayashi
Chikara Kobayashi 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: 20240098400Abstract: A headphone includes an outer arc-shaped headband including two strip-shaped guide portion respectively provided at both ends of the headband. The headphone further includes two speakers respectively connected to ends of the two guide portions. The headphone further includes an inner arc-shaped head pad including two sliders respectively provided at both ends of the head pad. Each slider includes an insertion hole through which the guide portion is inserted, a wall surface along which the guide portion slides, and a pressing portion that presses the guide portion toward the wall surface.Type: ApplicationFiled: August 30, 2023Publication date: March 21, 2024Inventor: Chikara KOBAYASHI
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Patent number: 9711984Abstract: A method and apparatus for generating a high voltage at a battery system. The apparatus in one embodiment includes a supply node configured for direct or indirect coupling to a supply voltage. A converter is coupled between an input node and an output node, wherein the converter is configured to operate in a forward mode or a reverse mode. The converter generates a voltage at the converter output node for charging a battery when operating in the forward mode, wherein a magnitude of the voltage generated at the converter output node is less than a magnitude of the supply voltage. The converter generates a voltage at the converter input node when operating in the reverse mode, wherein a magnitude of the voltage generated at the converter input node is different than a magnitude of a voltage provided by the battery. A control circuit is coupled to and configured to control operation of the converter in the forward mode or the reverse mode.Type: GrantFiled: October 28, 2014Date of Patent: July 18, 2017Assignee: Renesas Electronics America Inc.Inventors: Kenji Yoshida, Tetsuo Sato, Shigeru Maeta, Chikara Kobayashi
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Publication number: 20170179737Abstract: A battery driven system has a secondary battery, a main unit, a switch provided on a power source path or a signal path of the main unit, an impedance measurement circuit, a memory circuit, and an authentication circuit. The impedance measurement circuit measures the impedance of the secondary battery. The memory circuit holds a preset impedance characteristic of the secondary battery as collating data. The authentication circuit compares measurement data based on the measured result of the impedance measurement circuit with the collating data, thereby determining whether the secondary battery is suitable. It controls the switch to be turned off, when the secondary battery is not suitable.Type: ApplicationFiled: December 2, 2016Publication date: June 22, 2017Inventors: Masaya EMI, Masaki Hogari, Chikara Kobayashi
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Publication number: 20160118825Abstract: A method and apparatus for generating a high voltage at a battery system. The apparatus in one embodiment includes a supply node configured for direct or indirect coupling to a supply voltage. A converter is coupled between an input node and an output node, wherein the converter is configured to operate in a forward mode or a reverse mode. The converter generates a voltage at the converter output node for charging a battery when operating in the forward mode, wherein a magnitude of the voltage generated at the converter output node is less than a magnitude of the supply voltage. The converter generates a voltage at the converter input node when operating in the reverse mode, wherein a magnitude of the voltage generated at the converter input node is different than a magnitude of a voltage provided by the battery. A control circuit is coupled to and configured to control operation of the converter in the forward mode or the reverse mode.Type: ApplicationFiled: October 28, 2014Publication date: April 28, 2016Inventors: Kenji Yoshida, Tetsuo Sato, Shigeru Maeta, Chikara Kobayashi
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Patent number: 9049284Abstract: An electronic device includes a case, a multi-directional input unit having an annular base and a flange that extends from an outer circumferential surface of the annular base and fits part of the case, the flange guiding light emitted from a light source and radiating the light; and a cover having a through-hole through which part of the multi-directional input unit passes, the cover abutting the flange and being secured to the case.Type: GrantFiled: October 5, 2011Date of Patent: June 2, 2015Assignee: FUJITSU LIMITEDInventors: Tomonori Sakurai, Chikara Kobayashi, Jiro Takahashi
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Patent number: 9016917Abstract: An electronic device includes a housing, a first light guide plate, a second light guide plate, and a first adhesive member. A first hole in position to a first light-emitting source and a second hole in position to a second light-emitting source are formed on the housing. The first light guide plate has a first projection to be inserted into the first hole. The second light guide plate has a main-body plate portion to be superposed on the first light guide plate with the first projection penetrating therethrough and a second projection to be inserted into the second hole. The second light guide plate blocks out the light of the first light-emitting source with the main-body plate portion. The first adhesive member is inserted between the second light guide plate and the housing, and attaches the main-body plate portion to the housing.Type: GrantFiled: April 16, 2013Date of Patent: April 28, 2015Assignee: Fujitsu LimitedInventors: Kyoko Fujita, Jun Hata, Kei Kojima, Chikara Kobayashi
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Patent number: 8886257Abstract: An electronic device includes a housing, a display module, and a touch panel. On the housing, an opening is formed. The display module is fixed to the inside of the housing in such a way that a display surface faces the side of the opening. The touch panel is placed to be opposed to the display surface of the display module via a first elastic member placed on the display surface of the display module, and is fixed to the housing via a second elastic member placed on the housing. Hardness of the first elastic member is higher than that of the second elastic member.Type: GrantFiled: April 22, 2013Date of Patent: November 11, 2014Assignee: Fujitsu LimitedInventors: Tomohiro Butsusaka, Kei Kojima, Chikara Kobayashi, Masahiko Ina, Shigehiro Fujii
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Patent number: 8855286Abstract: An audio conference device receives and emits sounds to perform transmission/reception of audio signals via communications. The device has a speaker array with a plurality of speakers arranged on the lower surface of an elongated main housing, and a microphone array with a plurality of microphones arranged on the side surface of the main housing along the longitudinal direction. Legs are attached to the main body to support the main housing at a prescribed height above the resting surface and to secure good sound emission characteristics of the speaker array. The device further controls directivity of the microphones.Type: GrantFiled: October 11, 2013Date of Patent: October 7, 2014Assignee: Yamaha CorporationInventors: Toshiaki Ishibashi, Chikara Kobayashi, Kazumasa Suzuki
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Patent number: 8811023Abstract: An electronic device includes a case including a fixing portion, a printed board fixed to the fixing portion, a key rubber provided with key tops and fixed to the printed board, and a flexible cable attached to the printed board and bent in a direction different from the surface of the fixing portion to which the printed board is fixed, wherein the key rubber includes a contact portion that is in contact with the folded portion of the flexible cable and subjected to reaction force of the flexible cable, and a locking portion pressed against the case by the reaction force.Type: GrantFiled: October 26, 2011Date of Patent: August 19, 2014Assignee: Fujitsu LimitedInventors: Tomonori Sakurai, Jiro Takahashi, Chikara Kobayashi
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Publication number: 20140037081Abstract: An audio conference device receives and emits sounds to perform transmission/reception of audio signals via communications. The device has a speaker array with a plurality of speakers arranged on the lower surface of an elongated main housing, and a microphone array with a plurality of microphones arranged on the side surface of the main housing along the longitudinal direction. Legs are attached to the main body to support the main housing at a prescribed height above the resting surface and to secure good sound emission characteristics of the speaker array. The device further controls directivity of the microphones.Type: ApplicationFiled: October 11, 2013Publication date: February 6, 2014Applicant: YAMAHA CORPORATIONInventors: Toshiaki ISHIBASHI, Chikara KOBAYASHI, Kazumasa SUZUKI
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Publication number: 20130331150Abstract: An electronic device includes a housing, a display module, and a touch panel. On the housing, an opening is formed. The display module is fixed to the inside of the housing in such a way that a display surface faces the side of the opening. The touch panel is placed to be opposed to the display surface of the display module via a first elastic member placed on the display surface of the display module, and is fixed to the housing via a second elastic member placed on the housing. Hardness of the first elastic member is higher than that of the second elastic member.Type: ApplicationFiled: April 22, 2013Publication date: December 12, 2013Applicant: FUJITSU LIMITEDInventors: Tomohiro Butsusaka, Kei Kojima, Chikara Kobayashi, Masahiko Ina, Shigehiro Fujii
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Publication number: 20130329419Abstract: An electronic device includes a housing, a first light guide plate, a second light guide plate, and a first adhesive member. A first hole in position to a first light-emitting source and a second hole in position to a second light-emitting source are formed on the housing. The first light guide plate has a first projection to be inserted into the first hole. The second light guide plate has a main-body plate portion to be superposed on the first light guide plate with the first projection penetrating therethrough and a second projection to be inserted into the second hole. The second light guide plate blocks out the light of the first light-emitting source with the main-body plate portion. The first adhesive member is inserted between the second light guide plate and the housing, and attaches the main-body plate portion to the housing.Type: ApplicationFiled: April 16, 2013Publication date: December 12, 2013Inventors: Kyoko Fujita, Jun Hata, Kei Kojima, Chikara Kobayashi
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Patent number: 8565464Abstract: In an audio signal transmission/reception device that receives and emits sounds so as to perform transmission and reception of audio signals via communications, user operability can be improved and the size of a main unit can be reduced. It is equipped with a speaker array for arranging a plurality of speaker units, which are arranged on the lower surface of the main unit, and a microphone array for arranging a plurality of microphones, which are arranged on the side surface of the main unit in its longitudinal direction. Legs having hollow structures are attached to the main unit so as to support the main unit at a prescribed height above the mount surface (e.g., the surface of a desk) and to secure good sound emission characteristics of the speaker array.Type: GrantFiled: October 25, 2006Date of Patent: October 22, 2013Assignee: Yamaha CorporationInventors: Toshiaki Ishibashi, Chikara Kobayashi, Kazumasa Suzuki
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Patent number: 8554290Abstract: A portable electronic apparatus includes a first casing, a second casing movably connected to the first casing, a first elastic member provided on a surface of the second casing facing the first casing and a second elastic member provided on a surface of the first casing facing the second casing. The second elastic member includes a convex portion that elastically contacts with the first elastic member in a closed state in which the first casing and the second casing are superposed.Type: GrantFiled: November 8, 2011Date of Patent: October 8, 2013Assignee: Fujitsu LimitedInventors: Tomonori Sakurai, Chikara Kobayashi, Jiro Takahashi
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Publication number: 20130063915Abstract: An electronic device includes a printed circuit board that a substrate contact part acting as a point of contact with another component is formed on a board surface thereof, a conductive member that has a first contact portion in contact with the substrate contact part, a plate-like extending portion extending from the first contact portion to the outside of the printed circuit board, and a second contact portion formed on a plate surface of the extending portion on the outside of the printed circuit board, and an electrical component that includes a component contact part in contact with the second contact portion and a body part on which the component contact part is formed, and is placed so that the component contact part or at least a part of the body part is opposed to an end face of the printed circuit board.Type: ApplicationFiled: September 7, 2012Publication date: March 14, 2013Applicant: FUJITSU LIMITEDInventors: Tomonori SAKURAI, Chikara KOBAYASHI, Hiroaki MATSUDA, Haruyoshi YADA, Kurumi HARADA, Tatsuhito ARAKI
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Patent number: 8238584Abstract: A voice signal transmitting/receiving apparatus includes: a device body; a speaker array arranged in the device body and including a plurality of arrayed speaker units; and a microphone array arranged in the device body and including a plurality of arrayed microphones. By thus integrating the speaker array and the microphone array, it is possible to improve the operability of a user, to acquaint the user relatively easily with the error in the set position and to make the device compact.Type: GrantFiled: March 9, 2006Date of Patent: August 7, 2012Assignee: Yamaha CorporationInventors: Kosuke Saito, Katsuichi Osakabe, Shinji Aoshima, Toshiaki Ishibashi, Yuichiro Suenaga, Chikara Kobayashi
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Publication number: 20120113574Abstract: A portable electronic apparatus includes a first casing, a second casing movably connected to the first casing, a first elastic member provided on a surface of the second casing facing the first casing and a second elastic member provided on a surface of the first casing facing the second casing. The second elastic member includes a convex portion that elastically contacts with the first elastic member in a closed state in which the first casing and the second casing are superposed.Type: ApplicationFiled: November 8, 2011Publication date: May 10, 2012Applicant: FUJITSU LIMITEDInventors: Tomonori SAKURAI, Chikara Kobayashi, Jiro Takahashi
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Publication number: 20120113652Abstract: An electronic device includes a case, a multi-directional input unit having an annular base and a flange that extends from an outer circumferential surface of the annular base and fits part of the case, the flange guiding light emitted from a light source and radiating the light; and a cover having a through-hole through which part of the multi-directional input unit passes, the cover abutting the flange and being secured to the case.Type: ApplicationFiled: October 5, 2011Publication date: May 10, 2012Applicant: FUJITSU LIMITEDInventors: Tomonori SAKURAI, Chikara Kobayashi, Jiro Takahashi
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Publication number: 20120113604Abstract: An electronic device includes a case including a fixing portion, a printed board fixed to the fixing portion, a key rubber provided with key tops and fixed to the printed board, and a flexible cable attached to the printed board and bent in a direction different from the surface of the fixing portion to which the printed board is fixed, wherein the key rubber includes a contact portion that is in contact with the folded portion of the flexible cable and subjected to reaction force of the flexible cable, and a locking portion pressed against the case by the reaction force.Type: ApplicationFiled: October 26, 2011Publication date: May 10, 2012Applicant: FUJITSU LIMITEDInventors: Tomonori SAKURAI, Jiro TAKAHASHI, Chikara KOBAYASHI
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Publication number: 20120111713Abstract: A portable electronic device includes a printed circuit board module including a printed circuit board, a contact switch disposed on the printed circuit board, and a sheet having a first portion attached to the contact switch and a surface of the printed circuit board on which the contact switch is disposed, a folded portion which is extended from the first sheet portion and folded back at an edge surface of the printed circuit board, and a second portion which is extended from the folded portion and attached to a back surface of the surface of the printed circuit board on which the contact switch is disposed, a key module including a key top provided on the sheet opposite to the contact switch, and a pusher which is provided between the key top and the contact switch, and a housing.Type: ApplicationFiled: November 7, 2011Publication date: May 10, 2012Applicant: FUJITSU LIMITEDInventors: Tomonori SAKURAI, Yoshitaka SAKATA, Chikara KOBAYASHI, Jiro TAKAHASHI