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).

  • Publication number: 20240098400
    Abstract: 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: Application
    Filed: August 30, 2023
    Publication date: March 21, 2024
    Inventor: Chikara KOBAYASHI
  • Patent number: 9711984
    Abstract: 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: Grant
    Filed: October 28, 2014
    Date of Patent: July 18, 2017
    Assignee: Renesas Electronics America Inc.
    Inventors: Kenji Yoshida, Tetsuo Sato, Shigeru Maeta, Chikara Kobayashi
  • Publication number: 20170179737
    Abstract: 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: Application
    Filed: December 2, 2016
    Publication date: June 22, 2017
    Inventors: Masaya EMI, Masaki Hogari, Chikara Kobayashi
  • Publication number: 20160118825
    Abstract: 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: Application
    Filed: October 28, 2014
    Publication date: April 28, 2016
    Inventors: Kenji Yoshida, Tetsuo Sato, Shigeru Maeta, Chikara Kobayashi
  • Patent number: 9049284
    Abstract: 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: Grant
    Filed: October 5, 2011
    Date of Patent: June 2, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Tomonori Sakurai, Chikara Kobayashi, Jiro Takahashi
  • Patent number: 9016917
    Abstract: 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: Grant
    Filed: April 16, 2013
    Date of Patent: April 28, 2015
    Assignee: Fujitsu Limited
    Inventors: Kyoko Fujita, Jun Hata, Kei Kojima, Chikara Kobayashi
  • Patent number: 8886257
    Abstract: 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: Grant
    Filed: April 22, 2013
    Date of Patent: November 11, 2014
    Assignee: Fujitsu Limited
    Inventors: Tomohiro Butsusaka, Kei Kojima, Chikara Kobayashi, Masahiko Ina, Shigehiro Fujii
  • Patent number: 8855286
    Abstract: 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: Grant
    Filed: October 11, 2013
    Date of Patent: October 7, 2014
    Assignee: Yamaha Corporation
    Inventors: Toshiaki Ishibashi, Chikara Kobayashi, Kazumasa Suzuki
  • Patent number: 8811023
    Abstract: 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: Grant
    Filed: October 26, 2011
    Date of Patent: August 19, 2014
    Assignee: Fujitsu Limited
    Inventors: Tomonori Sakurai, Jiro Takahashi, Chikara Kobayashi
  • Publication number: 20140037081
    Abstract: 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: Application
    Filed: October 11, 2013
    Publication date: February 6, 2014
    Applicant: YAMAHA CORPORATION
    Inventors: Toshiaki ISHIBASHI, Chikara KOBAYASHI, Kazumasa SUZUKI
  • Publication number: 20130331150
    Abstract: 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: Application
    Filed: April 22, 2013
    Publication date: December 12, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Tomohiro Butsusaka, Kei Kojima, Chikara Kobayashi, Masahiko Ina, Shigehiro Fujii
  • Publication number: 20130329419
    Abstract: 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: Application
    Filed: April 16, 2013
    Publication date: December 12, 2013
    Inventors: Kyoko Fujita, Jun Hata, Kei Kojima, Chikara Kobayashi
  • Patent number: 8565464
    Abstract: 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: Grant
    Filed: October 25, 2006
    Date of Patent: October 22, 2013
    Assignee: Yamaha Corporation
    Inventors: Toshiaki Ishibashi, Chikara Kobayashi, Kazumasa Suzuki
  • Patent number: 8554290
    Abstract: 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: Grant
    Filed: November 8, 2011
    Date of Patent: October 8, 2013
    Assignee: Fujitsu Limited
    Inventors: Tomonori Sakurai, Chikara Kobayashi, Jiro Takahashi
  • Publication number: 20130063915
    Abstract: 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: Application
    Filed: September 7, 2012
    Publication date: March 14, 2013
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori SAKURAI, Chikara KOBAYASHI, Hiroaki MATSUDA, Haruyoshi YADA, Kurumi HARADA, Tatsuhito ARAKI
  • Patent number: 8238584
    Abstract: 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: Grant
    Filed: March 9, 2006
    Date of Patent: August 7, 2012
    Assignee: Yamaha Corporation
    Inventors: Kosuke Saito, Katsuichi Osakabe, Shinji Aoshima, Toshiaki Ishibashi, Yuichiro Suenaga, Chikara Kobayashi
  • Publication number: 20120113574
    Abstract: 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: Application
    Filed: November 8, 2011
    Publication date: May 10, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori SAKURAI, Chikara Kobayashi, Jiro Takahashi
  • Publication number: 20120113652
    Abstract: 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: Application
    Filed: October 5, 2011
    Publication date: May 10, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori SAKURAI, Chikara Kobayashi, Jiro Takahashi
  • Publication number: 20120113604
    Abstract: 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: Application
    Filed: October 26, 2011
    Publication date: May 10, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori SAKURAI, Jiro TAKAHASHI, Chikara KOBAYASHI
  • Publication number: 20120111713
    Abstract: 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: Application
    Filed: November 7, 2011
    Publication date: May 10, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Tomonori SAKURAI, Yoshitaka SAKATA, Chikara KOBAYASHI, Jiro TAKAHASHI