Patents by Inventor Akira Takakura

Akira Takakura 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: 20160080078
    Abstract: To perform stable communication in communication by an optical signal. An electronic device includes a display part having a light source which transmits an optical signal, a direction detection part detecting a direction of a display screen of the display part and a controller transmitting data by the optical signal from the display part to an electronic timepiece when the direction of the display screen detected by the detection part becomes a predetermined direction.
    Type: Application
    Filed: September 15, 2015
    Publication date: March 17, 2016
    Inventors: Kenji OGASAWARA, Akira TAKAKURA, Kazumi SAKUMOTO, Tamotsu MAESAWA, Kazuhiro KOYAMA, Tomohiro IHASHI, Kosuke YAMAMOTO, Ayumi MATSUMOTO
  • Publication number: 20160001528
    Abstract: An electrical component has an electronic part, a primer layer covering at least partially the electronic part, and a sealing resin covering at least partially the electronic part and the primer layer. The primer layer contains a polyimide polymer having the structure represented by the following chemical formula (1), and the sealing resin contains an epoxy-based resin and/or maleimide-based resin. (In the formula (1), R1 is a tetravalent alicyclic hydrocarbon group, tetravalent aliphatic hydrocarbon group, or tetravalent aromatic hydrocarbon group, and may contain O or/and S. In the formula (1), R2 is H or 1-3C alkyl group. In the formula (1), n1 is an integer from 1 to 10 (inclusive), and m is an integer from 1 to 100000 (inclusive).
    Type: Application
    Filed: July 1, 2015
    Publication date: January 7, 2016
    Inventors: Akira TAKAKURA, Hiroyuki OKUHIRA
  • Publication number: 20150342476
    Abstract: An electronic apparatus includes a determination unit that determines a reference heart rate used as a reference of a heart rate on the basis of a reference running speed used as a reference of exercise ability of a user.
    Type: Application
    Filed: October 1, 2013
    Publication date: December 3, 2015
    Applicants: Seiko Instruments Inc., ASICS Corporation
    Inventors: Akira TAKAKURA, Takanori HASEGAWA, Kazuhiro KOYAMA, Keisuke TSUBATA, Takehiro TAGAWA, Ryota SHINAYAMA
  • Patent number: 9192843
    Abstract: An analysis system includes: an electronic device that is attached to an upper body of a swimmer; and an analysis apparatus. The electronic device includes: an acceleration sensor that detects acceleration in a gravity direction in a state where the swimmer stands erect; and a first communication unit that transmits acceleration data indicating the acceleration detected by the acceleration sensor to the analysis apparatus. The analysis apparatus includes: a second communication unit that receives the acceleration data from the electronic device; and a control unit that determines whether the swimmer is in a swimming state or the swimmer is in a resting state, based on the acceleration data received by the second communication unit.
    Type: Grant
    Filed: August 27, 2013
    Date of Patent: November 24, 2015
    Assignee: Keio University
    Inventors: Keisuke Tsubata, Akira Takakura, Yuji Ohgi
  • Publication number: 20150241459
    Abstract: A wristwatch (100) includes: a storing unit (103) that stores relational data indicating a relationship between a traveling pitch, which is the number of steps taken per predetermined amount of time, and a traveling speed which is a running speed or a walking speed; and a processing unit (101) that calculates a traveling speed of a user from a measured traveling pitch of the user based on the relational data stored in the storing unit (103) which indicates the relationship between the traveling pitch and the traveling speed.
    Type: Application
    Filed: August 8, 2013
    Publication date: August 27, 2015
    Inventors: Akira Takakura, Hiroshi Shimizu, Tomohiro Ihashi, Keisuke Tsubata, Takehiro Tagawa, Ryota Shinayama
  • Publication number: 20150226763
    Abstract: A wristwatch (100) includes: a storing unit (103) that stores relational data indicating a relationship between a traveling pitch, which is the number of steps taken per predetermined amount of time, and a traveling speed which is a running speed or a walking speed; and a processing unit (101) that calculates a traveling speed of a user from a measured traveling pitch of the user based on the relational data stored in the storing unit (103) which indicates the relationship between the traveling pitch and the traveling speed.
    Type: Application
    Filed: August 8, 2013
    Publication date: August 13, 2015
    Inventors: Akira Takakura, Hiroshi Shimizu, Tomohiro Ihashi, Keisuke Tsubata, Takehiro Tagawa, Ryota Shinayama
  • Publication number: 20150226574
    Abstract: Provided is an electronic apparatus that can measure the wear degree of shoes used for running. A body movement detecting unit (105) measures the number of steps of a user during traveling. A CPU (101) calculates a wear degree, indicating a degree to which shoes of the user are worn out, based on the number of steps measured by the body movement detecting unit (105).
    Type: Application
    Filed: September 3, 2013
    Publication date: August 13, 2015
    Inventors: Akira Takakura, Hiroshi Shimizu, Tomohiro Ihashi, Keisuke Tsubata, Takehiro Tagawa, Ryota Shinayama, Youzou Kajita
  • Patent number: 9092015
    Abstract: There is provided an electronic timepiece that includes a solar panel which receives light to generate electric power, is operated with the electric power supplied from a secondary battery charged with output voltage of the solar panel, and includes a normal mode in which clock display is performed on a display unit and a power saving mode in which clock display on the display unit is stopped, based on illuminance detection of the solar panel, the electronic timepiece including: a mode control unit which switches cycles of the illuminance detection, by setting a cycle of the illuminance detection of the normal mode as a first cycle (for example, one minute), and a cycle of the illuminance detection of the power saving mode as a second cycle (for example, two seconds).
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: July 28, 2015
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Kazuo Kato, Akira Takakura, Tomohiro Ihashi, Takanori Hasegawa, Toshitaka Fukushima
  • Patent number: 9086685
    Abstract: A control circuit selects a drive pulse group corresponding to the detected voltage of a power cell from among plural drive pulse groups each including plural types of main drive pulses, and selects a drive pulse according to the detected condition of rotation of a stepping motor from among main drive pulses included in the selected drive pulse group or a correction drive pulse having larger energy than the main drive pulses. When the control circuit selects a main drive pulse initially by selecting the drive pulse group, the control circuit selects the main drive pulse having the largest energy in the selected drive pulse group. A drive pulse group selection circuit drives the stepping motor by the main drive pulse in the drive pulse group selected by the control circuit or the correction drive pulse via a main drive pulse output circuit and a correction drive pulse output circuit.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: July 21, 2015
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Kosuke Yamamoto, Akira Takakura, Kenji Ogasawara, Saburo Manaka, Kazumi Sakumoto, Keishi Honmura
  • Patent number: 9082709
    Abstract: A hardening resin composition includes a base resin and a hardening agent. The base resin contains a maleimide compound having two or more maleimide groups in one molecule, and the hardening agent contains a diamine compound expressed by a general chemical formula (1), in which A is an oxygen atom or a sulfur atom, X is a hydrogen atom, an alkyl group with a carbon number of six or less, or an aryl group, and n is a natural number of 1 to 10.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 14, 2015
    Assignee: DENSO CORPORATION
    Inventors: Hiroyuki Okuhira, Akira Takakura, Hiroshi Katou
  • Patent number: 9076371
    Abstract: A display device includes independently driven common and segment terminals. The common and segment terminals are connected to display components divided into display blocks that are turned ON to perform a display function and are turned OFF so as to not perform the display function. A first driver drives the common terminals using a scanning signal of a predetermined period and a second driver drives the segment terminals using a segment signal synchronized with the scanning signal to correspond to a display signal, so that the display components perform a display corresponding to the display signal. The first driver separates the common terminals into common terminal blocks and drives the common terminals. The first and second drivers perform the driving so that the common and segment terminals which are connected to display blocks that are turned OFF are not supplied with a turn-off signal and are maintained at ground potential.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: July 7, 2015
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Kazuo Kato, Akira Takakura, Keisuke Tsubata, Hisao Nakamura, Tomohiro Ihashi, Yoshinori Sugai, Eriko Noguchi, Satoshi Sakai, Takanori Hasegawa, Shotaro Kamiyama
  • Publication number: 20150168141
    Abstract: An electronic device includes an altitude measurement unit, an altitude change determination unit, and an elevating speed calculator. The altitude measurement unit measures an altitude, the altitude change determination unit determines whether a change state of the altitude measured by the altitude measurement unit is at least an ascending state or a descending state, and the elevating speed calculator calculates an average elevating speed in each change state determined by the altitude change determination unit based on the altitude measured by the altitude measurement unit. A data processing method in the electronic device and a data processing program executed by a computer of the electronic device may be realized.
    Type: Application
    Filed: November 13, 2014
    Publication date: June 18, 2015
    Inventors: Kazuo KATO, Keisuke TSUBATA, Hisao NAKAMURA, Tomohiro IHASHI, Takanori HASEGAWA, Katsuya MUGISHIMA, Akira TAKAKURA
  • Publication number: 20150168438
    Abstract: To provide an electronic device, a data processing method and a data processing program capable of measuring a stable ascending/descending velocity on which the most recent ascending/descending state is reflected. The electronic device includes an altitude measurement unit measuring altitudes, an altitude change determination unit determining an altitude change state based on altitudes measured by the altitude measurement unit within a predetermined first time interval until a current time and an ascending/descending velocity calculation unit calculating an ascending/descending velocity based on altitudes measured by the altitude measurement unit within a second time interval until the current time, which is equal to the first time interval or longer than the first time interval.
    Type: Application
    Filed: November 13, 2014
    Publication date: June 18, 2015
    Inventors: Keisuke TSUBATA, Hisao NAKAMURA, Takanori HASEGAWA, Tomohiro IHASHI, Katsuya MUGISHIMA, Kazuo KATO, Akira TAKAKURA
  • Publication number: 20150166728
    Abstract: A curable resin composition includes a main agent, an amine-based curing agent, and a phenol-based curing agent. The main agent includes at least one of a maleimide compound and an epoxy compound. The amine-based curing agent is made of aromatic polyamine. The phenol-based curing agent is made of phenols that has a phenolic OH equivalent of equal to or less than 90 and has a softening point or a melting point of equal to or lower than 100° C.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 18, 2015
    Inventors: Hiroyuki OKUHIRA, Akira TAKAKURA, Katsuhiro KANIE
  • Publication number: 20150168142
    Abstract: An electronic device includes: a storage unit that stores unit information relating to a movement with respect to each of an elevating state and a horizontal movement state; an altitude measurement unit that measures an altitude; an altitude change determination unit that determines whether the movement is the elevating state or the horizontal movement state based on the altitude measured by the altitude measurement unit; and a movement distance calculator that reads the unit information corresponding to the state determined by the altitude change determination unit from the storage unit and calculates a movement distance based on the read unit information.
    Type: Application
    Filed: November 18, 2014
    Publication date: June 18, 2015
    Inventors: Keisuke TSUBATA, Kazuo KATO, Tomohiro IHASHI, Takanori HASEGAWA, Hisao NAKAMURA, Katsuya MUGISHIMA, Akira TAKAKURA
  • Patent number: 9036455
    Abstract: An electronic timepiece is operated with a power-supply voltage from a secondary battery charged with a voltage from a solar panel. An oscillation circuit generates and supplies a clock signal to a CPU when the voltage charged to the battery is lower than a first voltage. A reset circuit resets the CPU when the voltage charged to the battery does not exceed a second voltage higher than the first voltage, and cancels the reset of the CPU when the voltage charged to the second battery exceeds the second voltage. The CPU starts an operation when the voltage charged to the secondary battery exceeds the second voltage and the reset is cancelled, and performs a time-of-day display on a display unit when the voltage charged to the secondary battery is equal to or higher than a third voltage higher than the second voltage.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: May 19, 2015
    Assignee: SEIKO INSTRUMENTS INC.
    Inventors: Kazuo Kato, Akira Takakura, Tomohiro Ihashi, Takanori Hasegawa, Toshitaka Fukushima
  • Patent number: 8982675
    Abstract: A power supply unit has a first power supply circuit that supplies a voltage to a load driving unit and a second power supply circuit that supplies a voltage to circuits other than the load driving unit. A first switching unit connects any one of a power supply that supplies a power supply voltage and a voltage step-down circuit that supplies a step-down voltage of the power supply voltage to the first power supply circuit. A second switching unit connects any one of the power supply and the voltage step-down circuit to the second power supply circuit. A control unit controls the connection by the first switching unit and the connection by the second switching unit to switch the voltage supplied to the first power supply circuit and the voltage supplied to the second power supply circuit in accordance with properties of the load driving unit.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: March 17, 2015
    Assignee: Seiko Instruments Inc.
    Inventors: Kazuo Kato, Akira Takakura, Toshitaka Fukushima, Keisuke Tsubata, Hisao Nakamura, Tomohiro Ihashi, Yoshinori Sugai, Eriko Noguchi, Satoshi Sakai, Takanori Hasegawa
  • Publication number: 20150039263
    Abstract: An electronic apparatus includes a display unit, an altitude measurement unit that measures an altitude, key input means for receiving an operation input, and a CPU that starts recording of altitude information regarding an altitude measured by the altitude measurement unit at a predetermined time interval if the key input means receives an input for instructing starting of recording of an altitude, stops the recording of the altitude information if the key input means receives an input for instructing stopping of recording of an altitude, and displays the altitude information when the recording starts on the display unit if the key input means receives an input for instructing display of the altitude information in a state in which the altitude information is currently recorded.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 5, 2015
    Inventors: Takanori HASEGAWA, Akira TAKAKURA, Keisuke TSUBATA, Kazuo KATO, Hisao NAKAMURA, Tomohiro IHASHI, Katsuya MUGISHIMA
  • Patent number: 8873344
    Abstract: A power consumption control device includes a power consumption control unit that receives the output potential of a photovoltaic cell generating an electromotive force, receives the output potential of a secondary battery charged by the electromotive force of the photovoltaic cell, causes a timepiece device to transition to a power saving state where a clock operation of measuring time is stopped when the output potential difference of the secondary battery is not greater than a predetermined threshold value, and the secondary battery is in a non-charging state indicating a state where the output potential difference of the photovoltaic cell is not greater than the output potential difference of the secondary battery.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: October 28, 2014
    Assignee: Seiko Instruments Inc.
    Inventors: Hiroshi Shimizu, Kazumi Sakumoto, Kenji Ogasawara, Kosuke Yamamoto, Keishi Honmura, Saburo Manaka, Akira Takakura
  • Publication number: 20140262414
    Abstract: A resin additive for a polyphenylene sulfide includes a diamine compound expressed by a following general chemical formula (1), in which A is an oxygen atom or a sulfur atom, X is a hydrogen atom, an alkyl group with a carbon number of six or less, or an aryl group, and n is a natural number of 1 to 10. A polyphenylene sulfide resin composition includes the resin additive and a polyphenylene sulfide resin. An electronic device includes a molded product of the polyphenylene sulfide resin composition.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: DENSO CORPORATION
    Inventors: Hiroyuki Okuhira, Akira Takakura, Hiroshi Katou