Patents by Inventor Yoshihiro Oba

Yoshihiro Oba 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: 9291698
    Abstract: According to an embodiment, a wireless communication device includes a detector to detect a mobile object by referring to sensing information; a first communicating unit to communicate mobile object information, which is related to a detection result of the mobile object, with another wireless communication device; a first calculator to calculate a moving path of the mobile object between wireless communication devices by referring to the detection result of the mobile object and mobile object information received from the other wireless communication device; a second communicating unit to communicate movement information, which is related to the moving path of the mobile object, with the other wireless communication device; and a second calculator to calculate distances between wireless communication devices that are dependent on the number of times of movement in the moving path by referring to the calculated moving path and movement information received from the other wireless communication device.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: March 22, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoki Watanabe, Tatsuo Kozakaya, Ryuzo Okada, Yoshihiro Oba, Mitsuru Kanda, Seijiro Yoneyama, Yasuyuki Tanaka, Takaomi Murakami
  • Publication number: 20160080340
    Abstract: According to an embodiment, a communication control device includes a generation unit and a control unit. The generation unit generates, in a system using a group key block, a group key corresponding to an individual communication group formed by two communication devices by using an manipulation command including a digital signature of the communication control device. The control unit controls a group manipulation of the communication devices by using a group manipulation command message to which an authentication code according to the generated group key is attached.
    Type: Application
    Filed: August 20, 2015
    Publication date: March 17, 2016
    Inventors: Yoshihiro OBA, Yoshikazu HANATANI
  • Publication number: 20160066354
    Abstract: According to an embodiment, a communication system is connected to a plurality of communication devices. The system includes a controller configured to control, by using a group identifier representing semantics of a group including at least one of the communication devices, the at least one of the communication devices that has been authenticated when the group is operated. An index is assigned to the at least one of the communication devices.
    Type: Application
    Filed: July 14, 2015
    Publication date: March 3, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro OBA, Yoshikazu HANATANI
  • Publication number: 20150381473
    Abstract: A communication device according to an embodiment is included in a multi-hop network. The communication device includes a holder, a storage, a switcher, and a controller. The holder holds communication data. The storage stores path information including an identifier that identifies a communication path and destination information that indicates a destination of communication data on the communication path. The switcher switches a communication path used to transmit communication data on the basis of the path information stored in the storage. The controller transmits communication data to a destination of a communication path switched by the switcher.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Takaomi MURAKAMI, Yoshihiro OBA, Ren SAKATA, Hiroki KUDO, Jumpei OGAWA
  • Patent number: 9170190
    Abstract: A sensor device is disclosed, including a database, and a processing apparatus. The database includes, for multiple different first types of objects, a first output data which are output data of an optical system acquired beforehand for each of the first objects in a case in which a surface of one side of the first object is set as the detection surface; and a second output data which are output data of the optical detection system acquired beforehand for each of the first objects in a case in which a surface of an other side opposite to the one side of the first object is set as the detection surface. The processing apparatus matches measurement data with the database, the measurement data being the output data of the optical detection system which is acquired with respect to a second object, and determines a type of the second object.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: October 27, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kazuma Goto, Yoshihiro Oba, Fumikazu Hoshi, Toshihiro Ishii, Satoru Sugawara
  • Patent number: 9157853
    Abstract: A moisture sensor for detecting moisture content of an object includes a light source to emit light having an infrared wavelength that is absorbed by water; an optical system to receive the light from the light source and output linearly polarized light having a first polarization direction in a direction toward the object, and to receive light scattered from the object and output linearly polarized light having a second polarization direction perpendicular to the first polarization direction in another direction other than the direction toward the object; and a photodetector to receive the linearly polarized light having the second polarization direction output from the optical system.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: October 13, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiro Ishii, Yoshihiro Oba, Fumikazu Hoshi, Satoru Sugawara
  • Publication number: 20150271671
    Abstract: According to an embodiment, a communication control device includes an acquisition unit, first and second authentication units, an output unit, and a connection permission unit. The acquisition unit acquires first authentication information for authenticating a communication device during initialization, via a first communication unit, from a terminal device that acquires and decodes encoded first authentication information. During initialization, the first authentication unit executes a connection authentication of the communication device via a second communication unit, based on the first authentication information. When the authentication is successful, the output unit encrypts second authentication information different from the first authentication information, and output the encrypted second authentication information to the communication device.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 24, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro OBA, Ren SAKATA, Hiroki KUDO
  • Publication number: 20150261163
    Abstract: An optical sensor includes a light source; and an optical detector detecting intensity of light that is reflected by a recording medium, the light from the light source and irradiated onto the recording medium. Further, when an incident angle of the light incident the recording medium from the light source relative to a normal line of the recording medium is given as ?1, a formula 75°??1?85° is satisfied.
    Type: Application
    Filed: May 28, 2013
    Publication date: September 17, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Toshihiro Ishii, Yoshihiro Oba, Fumikazu Hoshi, Satoru Sugawara
  • Patent number: 9103717
    Abstract: An optical sensor includes an irradiation system emitting linearly polarized light of a first polarization direction toward a surface of an object from an incident direction inclined with respect to a normal to the surface; a first light detection system including a first light detector placed on a light path of light emitted from the irradiation system and specularly reflected by the object; and a second light detection system including a separation optical element placed on a light path of light diffusely reflected by the object, on a plane of incidence of the object, and extracting a linearly polarized light component of the first polarization direction included in the light diffusely reflected by the object, a second light detector receiving the linearly polarized light component of the first polarization direction extracted by the separation optical element and a third light detector receiving the light diffusely reflected by the object.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 11, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yoshihiro Oba, Satoru Sugawara, Toshihiro Ishii, Fumikazu Hoshi
  • Publication number: 20150215119
    Abstract: According to one embodiment, an information processing apparatus, which is connected to an external apparatus, includes a device key storage unit, a creating unit, a calculating unit, a communication unit, and a key calculating unit. The device key storage unit stores therein a device key. The creating unit creates a media key from the device key and a media key block. The calculating unit calculates first output information on the basis of first inherent information inherent to the information processing apparatus and public information. The communication unit transmits the first output information to the external apparatus and receives second output information calculated by the external apparatus from the external apparatus. The key calculating unit calculates a shared key shared between the information processing apparatus and the external apparatus on the basis of the media key, the first inherent information, and the second output information.
    Type: Application
    Filed: April 7, 2015
    Publication date: July 30, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Toru KAMBAYASHI, Yoshikazu HANATANI, Yuichi KOMANO, Yoshihiro OBA, Satoshi ITO, Taku KATO, Yasuro SHOBATAKE
  • Publication number: 20150208210
    Abstract: A communication control device includes an extracting and an output unit. One or more communication devices belong to a first-type group, and one or more communication devices belong to a second-type group. From a media key block containing a plurality of elements, the extracting unit extracts partial information containing an element which is processible by each communication device belonging to a subset of the second-type group. To the communication devices belonging to the second-type group that is identified by identification information corresponding to the partial information; the output unit outputs a group ID that indicates the first-type group, the identification information, and the partial information.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshikazu HANATANI, Toru KAMBAYASHI, Fangming ZHAO, Yoshihiro OBA
  • Patent number: 9077700
    Abstract: There is provided an authentication server including: a network access authenticating unit and an address notifying unit wherein the network access authenticating unit receives, from an authentication relay connected to a network, a first authentication message for a communication device existing under the authentication relay, and execute network access authentication process with the communication device, and the address notifying unit notifies the communication device of the server's address information in accordance with a result of the network access authentication process.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: July 7, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuyuki Tanaka, Yoshihiro Oba, Mitsuru Kanda
  • Publication number: 20150188785
    Abstract: A communication control device includes an extracting unit and an output unit. The extracting unit extracts, from a media key block containing a plurality of elements, partial information that contains elements which can be processed by a communication device having a device ID thereof identified in identification information for identifying one or more device IDs.
    Type: Application
    Filed: March 10, 2015
    Publication date: July 2, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshikazu Hanatani, Toru Kambayashi, Fangming Zhao, Yoshihiro Oba
  • Patent number: 9058566
    Abstract: According to an embodiment, a control device includes a detecting unit, a communication unit, and a control unit. The detecting unit detects that a power-supplied device is connected to a power supply line relaying supply of power. The communication unit receives consumer authentication information including consumer identification information for identifying a consumer from a communication device when it is detected that the power-supplied device is connected to the power supply line, transmits the consumer authentication information to a first server, receives power-supply-availability determination information representing whether supply of power to the power-supplied device is possible or not, from the first server, and transmits power measurement information representing power supplied to the power-supplied device through the power supply line and the consumer identification information to a second server.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: June 16, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshihiro Oba, Yasuyuki Tanaka, Mitsuru Kanda
  • Patent number: 9025772
    Abstract: According to one embodiment, an information processing apparatus, which is connected to an external apparatus, includes a device key storage unit, a creating unit, a calculating unit, a communication unit, and a key calculating unit. The device key storage unit stores therein a device key. The creating unit creates a media key from the device key and a media key block. The calculating unit calculates first output information on the basis of first inherent information inherent to the information processing apparatus and public information. The communication unit transmits the first output information to the external apparatus and receives second output information calculated by the external apparatus from the external apparatus. The key calculating unit calculates a shared key shared between the information processing apparatus and the external apparatus on the basis of the media key, the first inherent information, and the second output information.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: May 5, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Toru Kambayashi, Yoshikazu Hanatani, Yuichi Komano, Yoshihiro Oba, Satoshi Ito, Taku Kato, Yasuro Shobatake
  • Publication number: 20150117298
    Abstract: According to an embodiment, a communication control device is connected to communication devices and includes a storage, a generator, and an output unit. The storage is configured to store group information containing a group ID of a group and device IDs of the communication devices belonging to the group. The generator is configured to generate compressed information in which the device IDs are compressed. The output unit is configured to output, when the group information is updated, to all communication devices identified by the device IDs included in the group information after updating and to a plurality of communication devices including one or more of the communication devices identified by the device IDs not included in the group information after updating, output information containing identification information for identifying the group after updating and compressed information in which the device IDs included in the group information after updating are compressed.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yoshikazu HANATANI, Toru KAMBAYASHI, Yoshihiro OBA
  • Publication number: 20150071217
    Abstract: A transmitting apparatus includes a first communicator, a designator, and a second communicator. The first communicator sends out a message by wireless broadcast communication to plural first communication apparatus, being located within a wireless communication range of the first communicator, of plural communication apparatus that have a wireless broadcast communication function and that constitute a wireless multi-hop network. The designator designates a second communication apparatus that is located outside the wireless communication range of the first communicator and that can establish a first communication channel, from among the plural communication apparatus having a the wireless broadcast communication function. The second communicator is wider in a communication range than the first communicator. The second communicator establishes the first communication channel with the second communication apparatus designated by the designator.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke DOI, Yoshihiro OBA
  • Publication number: 20150071658
    Abstract: A sensor device and an image forming apparatus incorporating the sensor device are provided. The sensor device includes a light source, a photo-detection system configured to receive light emitted from the light source and reflected at a sheet-like object, a housing accommodating the light source and the photo-detection system, the housing having a slit into which the object is inserted, and a holding member configured to hold the object such that relative positions of a surface of the object inserted into the slit and the photo-detection system are fixed. The image forming apparatus includes an image forming unit configured to form an image on a recording medium, the sensor device, and an adjustment unit configured to adjust a condition for image formation, based on an output from the sensor device.
    Type: Application
    Filed: September 5, 2014
    Publication date: March 12, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Fumikazu Hoshi, Yoshihiro Oba
  • Publication number: 20150062582
    Abstract: A sensor apparatus includes an irradiation system with a light source configured to emit linearly polarized light of a first polarization direction onto a sheet-like object, in a direction oblique to a direction orthogonal to a surface of the object, a first photodetector arranged on an optical path of light that is emitted from the irradiation system and then is reflected at the object by regular reflection, a first optical element, arranged on an optical path of light reflected by diffuse reflection from an incidence plane of the object, configured to transmit linearly polarized light of a second polarization direction that is orthogonal to the first polarization direction, a second photodetector configured to receive light that has passed through the first optical element, and a detection unit configured to detect at least one of basis weight and thickness of the object.
    Type: Application
    Filed: August 7, 2014
    Publication date: March 5, 2015
    Applicant: RICOH COMPANY. LTD.
    Inventors: Kazuhiko ADACHI, Yoshihiro OBA, Toshihiro ISHII, Fumikazu HOSHI, Sunao CHUBACHI, Yoshihiro MISAKA
  • Patent number: 8971239
    Abstract: A mobile device includes: multiple interfaces that are configured to support a various access technology such as 3G or Wi-Fi etc. A public land mobile network (PLMN) selector that generates a list for each of the PLMN networks that provide coverage to the mobile device. A PLMN selection policy parameter that is set to True or False to allow or prohibit the selection of PLMN networks by the mobile device based on the generated list where the generated list includes information as to different access technologies and selection priorities supported on the PLMN access networks providing coverage to the mobile device. In particular, when the PLMN selection policy parameter is set to True, multiple PLMN registrations are allowed; and when the A PLMN selection policy parameter is set to False, multiple PLMN registrations are prohibited.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: March 3, 2015
    Assignees: Kabushiki Kaisha Toshiba, Telcordia Technologies Inc.
    Inventors: Yoshihiro Oba, Raquel Morera, Subir Das