Patents by Inventor Kazunori Arakawa

Kazunori Arakawa 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).

  • Patent number: 10527641
    Abstract: A mobile device possessed by a user is equipped with: a motion sensor which is capable of detecting the motion of the mobile device; a receiver which is capable of receiving a polling signal transmitted from equipment; and a control unit which is configured so as to set, in response to whether or not the polling signal has been received by the receiver, the sampling speed with which the motion sensor detects the motion of the mobile device.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: January 7, 2020
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Masahiro Arakawa, Daisuke Kawamura, Hidenobu Hanaki, Kazunori Sobue, Tetsuya Kawamura
  • Publication number: 20190359842
    Abstract: The present technology provides an electrically conductive composition comprising: electrically conductive particles; an epoxy resin A that is solid at 25° C. with an epoxy equivalent weight of 400 g/eq to 1500 g/eq, or an epoxy resin D that is solid at 25° C. with an epoxy equivalent weight of 1500 g/eq to 3500 g/eq; an epoxy resin B that is liquid at 25° C. with an epoxy equivalent weight of less than 400 g/eq; a curing agent C; and a solvent. A total amount of A, B, and C is 3-10 parts by mass per 100 parts by mass of the electrically conductive particles, or a total amount of D, B, and C is 3-6 parts by mass per 100 parts by mass of the electrically conductive particles. A mass ratio [(A or D)/B] is from 20/80 to 80/20, and a mass ratio [C/{(A or D)+B}] is from 2/98 to 10/90.
    Type: Application
    Filed: January 23, 2018
    Publication date: November 28, 2019
    Inventors: Kazuo Arakawa, Takeaki Saiki, Kazunori Ishikawa
  • Publication number: 20190178907
    Abstract: A mobile device possessed by a user is equipped with: a motion sensor which is capable of detecting the motion of the mobile device; a receiver which is capable of receiving a polling signal transmitted from equipment; and a control unit which is configured so as to set, in response to whether or not the polling signal has been received by the receiver, the sampling speed with which the motion sensor detects the motion of the mobile device.
    Type: Application
    Filed: February 21, 2017
    Publication date: June 13, 2019
    Inventors: Masahiro ARAKAWA, Daisuke KAWAMURA, Hidenobu HANAKI, Kazunori SOBUE, Tetsuya KAWAMURA
  • Publication number: 20180105137
    Abstract: A biometric-electronic key system includes an electronic key that stores an electronic key ID and a communication peer that is capable of performing wireless communication with the electronic key ID. A non-accomplishment notification unit presents the user with a non-accomplishment notification of the biometric authentication when the biometric authentication cannot be accomplished. A key operation authentication unit executes authentication corresponding to an electronic key operation performed by the user in response to receipt of the non-accomplishment notification. An actuation permission unit permits actuation of the device even when the biometric authentication cannot be accomplished as long as the authentication performed by the key operation authentication unit has been accomplished.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 19, 2018
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Daisuke KAWAMURA, Masahiro ARAKAWA, Kazunori ARAKAWA
  • Patent number: 9714004
    Abstract: An electronic key registration system includes an electronic key and a communication master. The electronic key transmits a registration code. The communication master receives the registration code from the electronic key, obtains key information using the registration code, and registers the key information. The registration code is set in accordance with the communication master to which the electronic key is registered. The communication master includes a level determination unit, which determines a key registration security level when the electronic key is registered to the communication master, and a registration execution unit, which obtains the key information using the registration code based on the determined key registration security level and registers the key information to the communication master.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: July 25, 2017
    Assignees: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Kawamura, Masahiro Arakawa, Masaki Hayashi, Hiroaki Iwashita, Tetsuya Egawa, Kazunori Arakawa, Ryuta Atsumi, Chihiro Tatebayashi
  • Patent number: 9489789
    Abstract: A method for registering an electronic key includes storing an electronic key ID and an encryption code in a controller to register the electronic key to the controller, and associating a communication subject ID, which is unique to a communication subject, with a controller ID, which is unique to the controller storing the electronic key ID and the encryption code, and the electronic key ID.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: November 8, 2016
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Daisuke Kawamura, Hiroaki Iwashita, Masaki Hayashi, Masaki Oshima, Tetsuya Egawa, Kazunori Arakawa
  • Patent number: 9465730
    Abstract: Different block management values that sequentially increase are set for a plurality of blocks to indicate active states of the blocks. For example, a first block management value “$1111” is stored in a first block, and a second management value “$1112” is stored in a second block. Thus, even when more than one block is in an active state, an updated value is read from the block that stores a larger block management value. This allows for the true updated value to be read.
    Type: Grant
    Filed: May 1, 2012
    Date of Patent: October 11, 2016
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazunori Arakawa, Tetsuya Egawa, Hidekazu Adachi
  • Publication number: 20160225207
    Abstract: An electronic key registration system includes an electronic key and a communication master. The electronic key transmits a registration code. The communication master receives the registration code from the electronic key, code, obtains key information using the registration code, and registers the key information. The registration code is set in accordance with the communication master to which the electronic key is registered. The communication master includes a level determination unit, which determines a key registration security level when the electronic key is registered to the communication master, and a registration execution unit, which obtains the key information using the registration code based on the determined key registration security level and registers the key information to the communication master.
    Type: Application
    Filed: January 28, 2016
    Publication date: August 4, 2016
    Applicants: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke KAWAMURA, Masahiro ARAKAWA, Masaki HAYASHI, Hiroaki IWASHITA, Tetsuya EGAWA, Kazunori ARAKAWA, Ryuta ATSUMI, Chihiro TATEBAYASHI
  • Patent number: 9330510
    Abstract: A method for registering an electronic key to a controller of a communication subject includes locating an electronic key ID of a registered electronic key, which is registered to a first controller that was previously installed in the communication subject, based on a communication subject ID unique to the communication subject, and reregistering the registered electronic key to a second controller installed in the communication subject in lieu of the first controller by storing the electronic key ID of the registered electronic key and an encryption code corresponding to the electronic key ID in the second controller.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: May 3, 2016
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Daisuke Kawamura, Hiroaki Iwashita, Masaki Hayashi, Masaki Oshima, Yosuke Ohashi, Kazunori Arakawa
  • Patent number: 9021184
    Abstract: In a flash memory device, after an updated value is copied from a first block to a second block, a block management value of the first block is set to an unused state, and maintenance is performed to erase data from the first block. When performing maintenance, the block management value of the first block B1 is rewritten from “$FFF0” to “$FFFF.” When a reset occurs and the power supply is deactivated during the maintenance, the digit of “$0” in the block management value may become “1” to “E” of the hexadecimal system. In this manner, when the block management value includes a single digit of “1” to “E” and three digits of “F,” the reading of an updated value from the block corresponding to the block management value is restricted.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 28, 2015
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Yosuke Ohashi, Kazunori Arakawa, Tetsuya Egawa, Hidekazu Adachi
  • Publication number: 20140232520
    Abstract: A method for registering an electronic key to a controller of a communication subject includes locating an electronic key ID of a registered electronic key, which is registered to a first controller that was previously installed in the communication subject, based on a communication subject ID unique to the communication subject, and reregistering the registered electronic key to a second controller installed in the communication subject in lieu of the first controller by storing the electronic key ID of the registered electronic key and an encryption code corresponding to the electronic key ID in the second controller.
    Type: Application
    Filed: February 7, 2014
    Publication date: August 21, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Daisuke KAWAMURA, Hiroaki IWASHITA, Masaki HAYASHI, Masaki OSHIMA, Yosuke OHASHI, Kazunori ARAKAWA
  • Publication number: 20140232521
    Abstract: A method for registering an electronic key includes storing an electronic key ID and an encryption code in a controller to register the electronic key to the controller, and associating a communication subject ID, which is unique to a communication subject, with a controller ID, which is unique to the controller storing the electronic key ID and the encryption code, and the electronic key ID.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 21, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Daisuke KAWAMURA, Hiroaki IWASHITA, Masaki HAYASHI, Masaki OSHIMA, Tetsuya EGAWA, Kazunori ARAKAWA
  • Publication number: 20120297124
    Abstract: In a flash memory device, after an updated value is copied from a first block to a second block, a block management value of the first block is set to an unused state, and maintenance is performed to erase data from the first block. When performing maintenance, the block management value of the first block B1 is rewritten from “$FFF0” to “$FFFF.” When a reset occurs and the power supply is deactivated during the maintenance, the digit of “$0” in the block management value may become “1” to “E” of the hexadecimal system. In this manner, when the block management value includes a single digit of “1” to “E” and three digits of “F,” the reading of an updated value from the block corresponding to the block management value is restricted.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 22, 2012
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Yosuke OHASHI, Kazunori ARAKAWA, Tetsuya EGAWA, Hidekazu ADACHI
  • Publication number: 20120290770
    Abstract: Different block management values that sequentially increase are set for a plurality of blocks to indicate active states of the blocks. For example, a first block management value “$1111” is stored in a first block, and a second management value “$1112” is stored in a second block. Thus, even when more than one block is in an active state, an updated value is read from the block that stores a larger block management value. This allows for the true updated value to be read.
    Type: Application
    Filed: May 1, 2012
    Publication date: November 15, 2012
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Kazunori ARAKAWA, Tetsuya EGAWA, Hidekazu ADACHI
  • Publication number: 20090102623
    Abstract: A vehicle security system for improving security. A portable device generates a wireless signal containing a first ID code. A verification device stores a second ID code and a first control ID code, receives the wireless signal from the portable device and performs verification with the first and the second ID codes. A controller stores a second control ID code, receives the first control ID code from the verification device, and performs verification with the first and the second control ID codes. The controller controls a control subject such as a door lock when verification of the first and second ID codes and verification of the first and second control ID codes are established. When a deletion operation is performed, the second ID code is deleted from the verification device and the first or second control ID code is invalidated.
    Type: Application
    Filed: October 17, 2008
    Publication date: April 23, 2009
    Applicant: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventors: Chihiro Tatebayashi, Kazunori Arakawa, Toshiki Hiramatsu