Patents by Inventor Yoichi Shibata

Yoichi Shibata 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: 10704823
    Abstract: A vehicle heat management device that includes: a pump that circulates cooling water around a cooling water circulation path; an air blower that blows air through a radiator toward an exterior heat exchanger of an air-conditioning device of a vehicle; and a de-icing controller that, in a case in which an estimated ice adhesion amount on the exterior heat exchanger is a predetermined value or greater, starts first de-icing control by using a pump to circulate cooling water in a flow path including a second flow path, in the state in which a first flow path and the second flow path are isolated from each other by a first switching section, and using the air blower to blow air through the radiator toward the exterior heat exchanger.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: July 7, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoichi Onishi, Keisuke Shibata, Nobuharu Kakehashi
  • Publication number: 20200142933
    Abstract: A search device (300) transmits a search condition to a management device (400) that manages a numerical value which is a number sequence of one or more digits, based on a digit-by-digit correspondence between a number of each digit of the numerical value and a digit representation which is a symbol representing a digit. A grouping unit performs grouping on a plurality of search-target numerical values to be searched for, each of which is a number sequence of one or more digits, on a basis of commonality of the number of digits and commonality of a number sequence from a most significant digit, so as to generate one or more numerical value groups.
    Type: Application
    Filed: April 25, 2017
    Publication date: May 7, 2020
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoichi SHIBATA, Yoshihiro KOSEKI
  • Publication number: 20190340389
    Abstract: In a search device (102), a data search unit (233) acquires an encrypted query including one keyword from a data storage unit (232), the encrypted query being stored in the storage unit (232) since before the encrypted data is received by the data reception unit (231). The data search unit (233) determines whether a value of the encrypted data and the keyword of the encrypted query coincide, with both of the encrypted data and the encrypted query remaining encrypted. A data transmission unit (234) transmits identification data indicating an identifier of the encrypted query when it is determined by the data search unit (233) that the value of the encrypted data and the keyword of the encrypted query coincide.
    Type: Application
    Filed: January 27, 2017
    Publication date: November 7, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Mitsuhiro HATTORI, Yoichi SHIBATA, Takashi ITO, Fumio OMATSU
  • Publication number: 20190163934
    Abstract: A registration destination determination device (50) determines which data management device, among a plurality of data management devices (20A, 20B), is to manage registration data, such that, with a data type constituting the registration data as a target type, an appearance frequency distribution of values set for the target type of the registration data managed by each of the plurality of data management devices (20A, 20B) is different from an appearance frequency distribution of values set for the target type of the registration data managed by the whole of the plurality of data management devices (20A, 20B).
    Type: Application
    Filed: May 27, 2016
    Publication date: May 30, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takashi ITO, Nori MATSUDA, Mitsuhiro HATTORI, Yoichi SHIBATA, Takumi MORI, Takato HIRANO, Yoshihiro KOSEKI
  • Publication number: 20190139702
    Abstract: An irreversible circuit element that can reduce manufacturing costs by preventing faults that lead to product defects includes a magnetic body, a magnetic body securing casing, and a magnet. The magnetic body securing casing is arranged so as to surround the magnetic body. The magnet is arranged on one side of the magnetic body. The magnetic body securing casing includes a first electrode on one casing main surface arranged on the one side, a second electrode on the other casing main surface arranged on the other side opposite to the one side, and a through-conductor that passes through the magnetic body securing casing and electrically connects the first electrode to the second electrode. The first electrode is connected to a first wiring arranged on the one side of the magnetic body.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 9, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoichi KITAMURA, Tetsuya UEDA, Hironobu SHIBATA, Yukinobu TARUI
  • Publication number: 20180203990
    Abstract: A database (7) stores a first identifier and visiting destination authentication information in association with each other, the first identifier being generated from visitor authentication information which is one of an encrypted face photograph image and key data used for generating the encrypted face photograph image, the visiting destination authentication information being the other of the encrypted face photograph image and the key data. An authentication terminal apparatus (9) receives authentication data from a mobile terminal device (2) used by a visitor (1) who intends to enter a facility and generates a second identifier from the authentication data in the same generation procedure as that of the first identifier.
    Type: Application
    Filed: September 11, 2015
    Publication date: July 19, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazumi SAITO, Nori MATSUDA, Takashi ITO, Tadakazu YAMANAKA, Mitsuhiro HATTORI, Sachihiro ICHIKAWA, Yoichi SHIBATA, Takumi MORI, Takato HIRANO
  • Patent number: 9237008
    Abstract: An encryption device that, when voice or image data or the like being encoded is encrypted using a one-time pad (OTP) cipher and then transmitted, reduces a period of time in which a cipher key for the OTP cipher runs out. A first terminal device determines whether to encode transmission data by a first encoding scheme or a second encoding scheme having a lower bit rate than the first encoding scheme, depending on the number of remaining bits of an OTP cipher key, and encodes the transmission data according to the determined encoding scheme, thereby generating encoded data. The first terminal device encrypts the generated encoded data with the OTP cipher using the OTP cipher key, thereby generating encrypted communication data, and transmits the generated encrypted communication data to a second terminal device.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: January 12, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventor: Yoichi Shibata
  • Patent number: 9032208
    Abstract: A communication terminal that can adjust which section of a one-time pad cipher key is used and achieve cipher communication when there is a possibility that the one-time pad cipher keys are not completely matched between communication terminals. A cipher key transfer device acquires a one-time pad cipher key from a key sharing system, divides the acquired one-time pad cipher key with a predetermined number of bits, and transfers the same to a mobile communication terminal after converting the same into one-time pad cipher key cartridges. Along with the partner's terminal, the mobile communication terminal negotiates which one-time pad cipher key cartridge will be used to perform cipher communication, decides the one-time pad cipher key cartridge to be used, and begins cipher communication.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: May 12, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hirosato Tsuji, Yoichi Shibata
  • Patent number: 8958552
    Abstract: A certification device 101 encrypts a feature vector for registration by using a random number and a public key which is set to correspond to a secret key in a decryption device 103. The encrypted feature vector for registration is registered in an authentication device 102. In authentication, the certification device encrypts a feature vector for authentication by using the public key and a random number. With the two encrypted feature vectors being kept encrypted, the authentication device generates encrypted similarity degree information from which the decryption device can derive the similarity degree between the two feature vectors by a decryption process using the secret key. The decryption device 103 decrypts the encrypted similarity degree information to derive the similarity degree of the plaintext. The authentication device 102, if the similarity degree is equal to or larger than a threshold, determines that the user is the correct user.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: February 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mitsuhiro Hattori, Yoichi Shibata, Takashi Ito, Nori Matsuda, Katsuyuki Takashima, Takeshi Yoneda
  • Publication number: 20150047001
    Abstract: When a first communication part of an application program management part receives, from an application, an access request requesting use of a protected resource, an authentication information acquisition part acquires authentication information employed for verification of a legitimacy of the application program management part, from an authentication information storage part. A second communication part transmits the access request from the application and the authentication information, to an authentication part that determines whether or not the application is permitted to use the protected resource.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 12, 2015
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yukio Izumi, Shoji Sakurai, Nobuhiro Kobayashi, Yoichi Shibata, Manabu Misawa
  • Patent number: 8948377
    Abstract: The object is to enable cipher communication even when a cipher key in a one-time pad cipher (Vernam cipher) is running short. A one-time pad encrypting part encrypts communication data by the one-time pad cipher by sequentially using part of a one-time pad cipher key stored in a one-time pad cipher key storage part, to generate encrypted data. A block-encrypting part encrypts communication data by a block cipher by using a block-cipher key stored in a block-cipher key storage part, to generate encrypted data. An encryption control part controls whether the communication data is to be encrypted by the one-time pad encrypting part, or by the block-encrypting part, depending on a remaining bit count of the one-time pad cipher key stored in the one-time pad cipher key storage part.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: February 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoichi Shibata, Hirosato Tsuji, Mitsuru Matsui
  • Publication number: 20140086412
    Abstract: An encryption device that, when voice or image data or the like being encoded is encrypted using a one-time pad (OTP) cipher and then transmitted, reduces a period of time in which a cipher key for the OTP cipher runs out. A first terminal device determines whether to encode transmission data by a first encoding scheme or a second encoding scheme having a lower bit rate than the first encoding scheme, depending on the number of remaining bits of an OTP cipher key, and encodes the transmission data according to the determined encoding scheme, thereby generating encoded data. The first terminal device encrypts the generated encoded data with the OTP cipher using the OTP cipher key, thereby generating encrypted communication data, and transmits the generated encrypted communication data to a second terminal device.
    Type: Application
    Filed: July 25, 2011
    Publication date: March 27, 2014
    Applicant: Mitsubishi Electric Corporation
    Inventor: Yoichi Shibata
  • Publication number: 20130142328
    Abstract: The object is to enable cipher communication even when a cipher key in a one-time pad cipher (Vernam cipher) is running short. A one-time pad encrypting part encrypts communication data by the one-time pad cipher by sequentially using part of a one-time pad cipher key stored in a one-time pad cipher key storage part, to generate encrypted data. A block-encrypting part encrypts communication data by a block cipher by using a block-cipher key stored in a block-cipher key storage part, to generate encrypted data. An encryption control part controls whether the communication data is to be encrypted by the one-time pad encrypting part, or by the block-encrypting part, depending on a remaining bit count of the one-time pad cipher key stored in the one-time pad cipher key storage part.
    Type: Application
    Filed: August 24, 2010
    Publication date: June 6, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Yoichi Shibata, Hirosato Tsuji, MItsuru Matsui
  • Publication number: 20130138961
    Abstract: A communication terminal that can adjust which section of a one-time pad cipher key is used and achieve cipher communication when there is a possibility that the one-time pad cipher keys are not completely matched between communication terminals. A cipher key transfer device acquires a one-time pad cipher key from a key sharing system, divides the acquired one-time pad cipher key with a predetermined number of bits, and transfers the same to a mobile communication terminal after converting the same into one-time pad cipher key cartridges. Along with the partner's terminal, the mobile communication terminal negotiates which one-time pad cipher key cartridge will be used to perform cipher communication, decides the one-time pad cipher key cartridge to be used, and begins cipher communication.
    Type: Application
    Filed: August 24, 2010
    Publication date: May 30, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Hirosato Tsuji, Yoichi Shibata
  • Publication number: 20120207299
    Abstract: A certification device 101 encrypts a feature vector for registration by using a random number and a public key which is set to correspond to a secret key in a decryption device 103. The encrypted feature vector for registration is registered in an authentication device 102. In authentication, the certification device encrypts a feature vector for authentication by using the public key and a random number. With the two encrypted feature vectors being kept encrypted, the authentication device generates encrypted similarity degree information from which the decryption device can derive the similarity degree between the two feature vectors by a decryption process using the secret key. The decryption device 103 decrypts the encrypted similarity degree information to derive the similarity degree of the plaintext. The authentication device 102, if the similarity degree is equal to or larger than a threshold, determines that the user is the correct user.
    Type: Application
    Filed: October 29, 2009
    Publication date: August 16, 2012
    Applicant: Mitsubishi Electric Corporation
    Inventors: Mitsuhiro Hattori, Yoichi Shibata, Takashi Ito, Nori Matsuda, Katsuyuki Takashima, Takeshi Yoneda
  • Publication number: 20120069594
    Abstract: An interior lighting display device and a display panel thereof capable of effectively preventing a dark area from being formed in the display panel. A film or sheet that reflects light is disposed on a back surface and a side surface of a display panel of an interior lighting display device. For example, the film or sheet is disposed on a back surface and a side surface of a region that is a colored area having low transmittance of the display panel, and an area in which a light source is not present behind the display panel. In addition, a light reflective body is placed in an area in which the light source is not present within the interior lighting display device.
    Type: Application
    Filed: December 9, 2009
    Publication date: March 22, 2012
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Shingo Nomura, Kensuke Mizobuchi, Hideyuki Ikeda, Kouji Kumada, Kouji Katsura, Yoichi Shibata, Hideo Yoshida, Yoichiro Shiozaki
  • Patent number: 7447339
    Abstract: A unique code generating apparatus for generating, according to biometric information representing a physical or behavioral feature of a user, a unique code as a unique value for the biometric information includes a statistic information generating section for conducting statistical analysis for a feature of biometric information for registration and generating statistic information, a statistic information table generating section for summarizing the statistic information for each biometric information, setting a unique code for each statistic information, and generating a statistic information table unique to the biometric information, a unique code extracting section for applying to the statistic information table the statistic information generated by the statistic information generating section according to biometric information for collation and extracting an associated unique code from the table, and an output processing section for outputting the unique code extracted by the unique code extracting sec
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: November 4, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Masahiro Mimura, Kenta Takahashi, Kazuo Takaragi, Masakatsu Nishigaki, Yoichi Shibata
  • Publication number: 20050135661
    Abstract: A unique code generating apparatus for generating, according to biometric information representing a physical or behavioral feature of a user, a unique code as a unique value for the biometric information includes a statistic information generating section for conducting statistical analysis for a feature of biometric information for registration and generating statistic information, a statistic information table generating section for summarizing the statistic information for each biometric information, setting a unique code for each statistic information, and generating a statistic information table unique to the biometric information, a unique code extracting section for applying to the statistic information table the statistic information generated by the statistic information generating section according to biometric information for collation and extracting an associated unique code from the table, and an output processing section for outputting the unique code extracted by the unique code extracting sec
    Type: Application
    Filed: October 15, 2004
    Publication date: June 23, 2005
    Inventors: Masahiro Mimura, Kenta Takahashi, Kazuo Takaragi, Masakatsu Nishigaki, Yoichi Shibata
  • Patent number: 6144505
    Abstract: This invention provides an optical component free from weld formation in its optical surface and having an excellent optical performance, a method of molding an optical component, and a mold for molding an optical component. For this purpose, an optical component as a plastic molded product having an optical function, is formed with a molding surface with a shape of a curved surface, and a flange portion between the molding surface and a gate portion. At least part of a surface constituting the flange portion is molded by injecting a molten resin along a wall surface that forms an angular difference of 15.degree. or less which is substantially equal to a tangential angle to the curvature of the curved surface of the molding surface, which is near the flange portion.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: November 7, 2000
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroshi Nakanishi, Kaoru Okitaka, Yoichi Shibata
  • Patent number: 5950938
    Abstract: A fixed roller is laterally axially supported by a movable body so as to ow an axial center line of the fixed roller to extend in parallel to a lateral direction, and driven to rotate an upper peripheral surface of the fixed roller backward, and a plurality of split press rollers respectively having the axes inclined by a predetermined angle with respect to an axial center line of the fixed roller as viewed in plan are arranged in a row in a lateral direction above the fixed roller in the manner of supporting the split press rollers by press roller frames. The split press rollers are energized to the descending side by oil-hydraulic cylinders respectively provided between a frame of the body and the press roller frames so as to bring the lower peripheral surface side of each split press roller into contact with the upper peripheral surface of the fixed roller under the action of pressure.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: September 14, 1999
    Assignees: Director General of Hokkaido National Agricultural Experiment Station, Takakita Co., Ltd
    Inventors: Kunio Nishizaki, Yoichi Shibata, Yasuhiro Yokochi, Yuji Nakayama