Patents by Inventor Yoshihiro Ohba
Yoshihiro Ohba 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).
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Publication number: 20160149375Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.Type: ApplicationFiled: January 20, 2016Publication date: May 26, 2016Applicant: RICOH COMPANY, LTD.Inventors: Toshihiro ISHll, Satoru SUGAWARA, Yoshihiro OHBA, Kazuhiro HARASAKA, Shunichi SATO, Kazuhiko ADACHI
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Publication number: 20160109364Abstract: In an optical senor, a light emission system emits an irradiated light of a linear polarization in a first polarization direction toward a surface of a target object having a sheet shape from an incident direction which is inclined with respect to a normal direction of the surface. A first light detection system includes a first light detector arranged on a first light path of a specular reflected light, which is emitted from the light emission system and is specularly reflected from the target object. A second light detection system includes a second light detector arranged on a second light path of a diffuse reflected light which is diffusely reflected from an incident plane on the target object. The second light detector receives second light passed by an optical element which passes a linear polarization component of a second polarization direction perpendicular to the first polarization direction.Type: ApplicationFiled: December 21, 2015Publication date: April 21, 2016Applicant: RICOH COMPANY, LTD.Inventors: Yoshihiro OHBA, Satoru SUGAWARA, Toshihiro ISHll, Fumikazu HOSHI
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Patent number: 9274479Abstract: An optical sensor includes an irradiation system including a semiconductor laser having plural light-emitting parts; and at least one photodetector that detects an amount of light which is emitted from the irradiation system and reflected on a sheet-like object.Type: GrantFiled: November 17, 2011Date of Patent: March 1, 2016Assignee: RICOH COMPANY, LTD.Inventors: Fumikazu Hoshi, Yoshihiro Ohba
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Patent number: 9276377Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.Type: GrantFiled: October 8, 2014Date of Patent: March 1, 2016Assignee: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Satoru Sugawara, Yoshihiro Ohba, Kazuhiro Harasaka, Shunichi Sato, Kazuhiko Adachi
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Patent number: 9267886Abstract: In an optical sensor, a light emission system emits an irradiated light of a linear polarization in a first polarization direction toward a surface of a target object having a sheet shape from an incident direction which is inclined with respect to a normal direction of the surface. A first light detection system includes a first light detector arranged on a first light path of a specular reflected light, which is emitted from the light emission system and is specularly reflected from the target object. A second light detection system includes a second light detector arranged on a second light path of a diffuse reflected light which is diffusely reflected from an incident plane on the target object. The second light detector receives second light passed by an optical element which passes a linear polarization component of a second polarization direction perpendicular to the first polarization direction.Type: GrantFiled: November 25, 2011Date of Patent: February 23, 2016Assignee: RICOH COMPANY, LTD.Inventors: Yoshihiro Ohba, Satoru Sugawara, Toshihiro Ishii, Fumikazu Hoshi
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Patent number: 9188530Abstract: A sensor is configured to include an optical sensor including a light source and a plurality of light receivers which receive light emitted from the light source and light regularly reflected and diffusely reflected by an object, a database including output data regarding multiple objects of known and different types from the plurality of light receivers when an incident direction of light emitted from the light source forms a first direction to the object and when the incident direction of light emitted from the light source forms a second direction which is orthogonal to the first direction, and a processor which controls the light emitted from the light source to illuminate an object of unknown type and specifies the type of the object by matching the output data of the plurality of light receivers to the database.Type: GrantFiled: February 14, 2014Date of Patent: November 17, 2015Assignee: RICOH COMPANY, LTD.Inventors: Fumikazu Hoshi, Satoru Sugawara, Toshihiro Ishii, Yoshihiro Ohba
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Patent number: 8976216Abstract: A light source unit includes a surface-emitting laser array including light emitting units; and an apertured member provided on a light path of light beams emitted from the surface-emitting laser array, the apertured member including an aperture. In at least one direction, an intensity distribution of interference patterns caused by the light beams passing through the aperture includes an equal number of crests and troughs.Type: GrantFiled: April 20, 2011Date of Patent: March 10, 2015Assignee: Ricoh Company, Ltd.Inventors: Yoshihiro Ohba, Satoru Sugawara, Toshihiro Ishii
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Publication number: 20150023381Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.Type: ApplicationFiled: October 8, 2014Publication date: January 22, 2015Applicant: RICOH COMPANY, LTD.Inventors: Toshihiro Ishii, Satoru Sugawara, Yoshihiro Ohba, Kazuhiro Harasaka, Shunichi Sato, Kazuhiko Adachi
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Patent number: 8929330Abstract: In some of the preferred embodiments, a method for network discovery of a mobile device to use at least one of a plurality of access networks within an IP network includes: obtaining specified network information in the vicinity of a given location based on a set of criteria when a mobile is connected to the IP network from any location.Type: GrantFiled: April 20, 2009Date of Patent: January 6, 2015Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Kenichi Taniuchi, Yoshihiro Ohba, Sunil Madhani, Subir Das, Ashutosh Dutta
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Publication number: 20140380470Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.Type: ApplicationFiled: July 28, 2014Publication date: December 25, 2014Applicants: TOSHIBA AMERICA RESEARCH, INC., ERICSSON INC.Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
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Patent number: 8916418Abstract: A disclosed surface-emitting laser module includes a surface-emitting laser formed on a substrate to emit light perpendicular to its surface, a package including a recess portion in which the substrate having the surface-emitting laser is arranged, and a transparent substrate arranged to cover the recess portion of the package and the substrate having the surface-emitting laser such that the transparent substrate and the package are connected on a light emitting side of the surface-emitting laser. In the surface-emitting laser module, a high reflectance region and a low reflectance region are formed within a region enclosed by an electrode on an upper part of a mesa of the surface-emitting laser, and the transparent substrate is slanted to the surface of the substrate having the surface-emitting laser in a polarization direction of the light emitted from the surface-emitting laser determined by the high reflectance region and the low reflectance region.Type: GrantFiled: March 16, 2011Date of Patent: December 23, 2014Assignee: Ricoh Company, Ltd.Inventors: Toshihiro Ishii, Satoru Sugawara, Yoshihiro Ohba, Kazuhiro Harasaka, Shunichi Sato, Kazuhiko Adachi
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Patent number: 8886935Abstract: According to some embodiments, a key management apparatus for deploying in a smart grid system adapted to receive metering data from smart meters connected to at least one relay via a network, includes: a key control mechanism that derives a key array of individual purpose specific keys from one master key such that the purpose specific key in the key array are each independent cryptographic keys for each specific usage in an application or for each application if there is only one specific usage in an application.Type: GrantFiled: March 23, 2011Date of Patent: November 11, 2014Assignees: Kabushiki Kaisha Toshiba, Telcordia Technologies Inc.Inventors: Yoshihiro Ohba, Mitsuru Kanda, Subir Das, David Famolari
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Publication number: 20140268151Abstract: An optical sensor includes a light source to illuminate a linear polarization in a first direction, a first optical detector disposed on a path of a light illuminated from the light source and specularly reflected by an object, a first optical element to separate the light reflected by the object into a linear polarization in the first direction and a linear polarization in a second direction orthogonal to the first direction, a second optical detector to receive the linear polarization in the second direction separated by the first optical element, and a processor to obtain an amount of the light specularly reflected by the object on the basis of an output signal of the first optical detector and an output signal of the second optical detector.Type: ApplicationFiled: March 6, 2014Publication date: September 18, 2014Applicant: RICOH COMPANY, LTD.Inventors: Yoshihiro Ohba, Satoru Sugawara, Toshihiro Ishii, Fumikazu Hoshi
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Publication number: 20140241742Abstract: A sensor comprising an optical sensor including a light source and a plurality of light receivers which receive light emitted from the light source and light regularly reflected and diffusely reflected by an object, a database including output data regarding multiple objects of known and different types from the plurality of light receivers when an incident direction of light emitted from the light source forms a first direction to the object and when the incident direction of light emitted from the light source forms a second direction which is orthogonal to the first direction, and a processor which controls the light emitted from the light source to illuminate an object of unknown type and specifies the type of the object by matching the output data of the plurality of light receivers to the database.Type: ApplicationFiled: February 14, 2014Publication date: August 28, 2014Applicant: RICOH COMPANY, LTD.Inventors: Fumikazu Hoshi, Satoru Sugawara, Toshihiro Ishii, Yoshihiro Ohba
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Patent number: 8792454Abstract: Systems and methods are described for secure and seamless roaming between internal and external networks. Double and triple tunnels may be used to connect a mobile node to a correspondent host. A mobile node may include the ability to connect to two networks simultaneously to enable seamless roaming between networks.Type: GrantFiled: July 20, 2012Date of Patent: July 29, 2014Assignees: Toshiba America Resesarch, Inc., Telcordia Inc.Inventors: Kenichi Taniuchi, Tao Zhang, Prathima Agrawal, Ashutosh Dutta, Sunil Madhani, Shinichi Baba, Kensaku Fujimoto, Yasuhiro Katsube, Toshikazu Kodama, Yoshihiro Ohba
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Patent number: 8717931Abstract: In some of the preferred embodiments, a method for network discovery of a mobile device to use at least one of a plurality of access networks within an IP network includes: obtaining specified network information in the vicinity of a given location based on a set of criteria when a mobile is connected to the IP network from any location.Type: GrantFiled: November 7, 2005Date of Patent: May 6, 2014Assignees: Toshiba America Research, Inc., Telcordia Technologies, Inc.Inventors: Kenichi Taniuchi, Yoshihiro Ohba, Sunil Madhani, Subir Das, Ashutosh Dutta
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Patent number: 8681648Abstract: A packet data network gateway device may receive packet network data at a packet data network gateway device; filter the received packet network data to extract information associated with one or more messages in the packet network data; analyze the extracted information; and dynamically determine one or more of policy updates, rules, or thresholds based on the analyzing of the information and information associated with one or more of subscribers, location, existing policies, network operating condition and load.Type: GrantFiled: March 23, 2011Date of Patent: March 25, 2014Assignees: Telcordia Technologies, Inc., Kabushiki Kaisha ToshibaInventors: David Famolari, Subir Das, Yoshihiro Ohba
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Patent number: 8651516Abstract: A curtain airbag device capable of inflating and deploying without suffering a burst of a cushion part at an end of a cushion part protector near an inflator. The curtain airbag device includes a cushion part extending in a front to back direction of the vehicle, accommodated in a state rolled up from a lower end toward an upper end thereof, and inflating and deploying downward when gas is supplied thereto. The curtain airbag device includes an inflator for supplying gas to the cushion part from a predetermined position at the upper end of the cushion part, and an elongated protector 180 having an arc-like open curve cross section that is open downward and covering the cushion part, with an inner surface thereof making contact with the cushion part. The cross section of the protector being defined by the open curve, with an end point P of the open curve on a vehicle inner side smoothly going up at a first end near the inflator so that the open curve has an increasing distance between end points thereof.Type: GrantFiled: September 24, 2010Date of Patent: February 18, 2014Assignee: Autoliv Development ABInventors: Minfun Kim, Yoshihiro Ohba, Hidenori Suzuki
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Patent number: 8611280Abstract: A system and method for network selection procedures for simultaneous network connectivity through multiple accesses comprises obtaining stored and registered PLMNs, determining whether PLMNs are both stored PLMN for access technology type Ai and registered PLMN, when no PLMNs are both, performing PLMN selection using a standard procedure, when only one PLMN is both, determining whether the PLMN satisfies a condition, and when the PLMN satisfies the condition, attempting to connect to the PLMN, and when more than one PLMN is both, creating a set of PLMNs, selecting one PLMN that satisfies the condition, from the set PLMN, attempting to connect to the selected PLMN, and when attempting to connect fails, removing the selected PLMN from the set, and selecting another PLMN. In one aspect, the PLMN that minimizes changes is selected. In one aspect, the PLMN that provides access to a larger number of access technologies is selected.Type: GrantFiled: January 13, 2011Date of Patent: December 17, 2013Assignees: Telcordia Technologies, Inc., Kabushiki Kaisha ToshibaInventors: Raquel Morera, Subir Das, Yoshihiro Ohba
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Patent number: 8592604Abstract: The invention provides a thiazolothiazole compound represented by the following Formula (I). In Formula (I), Ar1 represents a substituted or unsubstituted aromatic group; R1 represents a hydrogen atom, an alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n represents an integer of 0 or 1. The invention further provides a thiazolothiazole polymer having the thiazolothiazole compound as a polymerization unit thereof.Type: GrantFiled: May 16, 2012Date of Patent: November 26, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Hidekazu Hirose, Takeshi Agata, Katsuhiro Sato, Kazuaki Sato, Yoshihiro Ohba