Patents by Inventor Takao Murakami
Takao Murakami 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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Patent number: 10840641Abstract: A connector includes a second housing fittable with a first housing, a slide member movable relative to the first housing along a connector fitting direction, a transmission gear member rotatably supported by a support shaft provided on the first housing, a first rack gear portion provided on the slide member along the connector fitting direction, a driven gear portion of the transmission gear member rotated by movement of the first rack gear portion in the connector fitting direction, a main drive gear portion of the transmission gear member provided on a side opposite to the driven gear portion with the support shaft interposed therebetween, and a second rack gear portion provided on the second housing along the connector fitting direction, and movable relative to the first housing along the connector fitting direction by rotation of the main drive gear portion.Type: GrantFiled: June 24, 2019Date of Patent: November 17, 2020Assignee: YAZAKI CORPORATIONInventors: Kengo Aoshima, Takao Murakami
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Publication number: 20200014146Abstract: A connector includes a second housing fittable with a first housing, a slide member movable relative to the first housing along a connector fitting direction, a transmission gear member rotatably supported by a support shaft provided on the first housing, a first rack gear portion provided on the slide member along the connector fitting direction, a driven gear portion of the transmission gear member rotated by movement of the first rack gear portion in the connector fitting direction, a main drive gear portion of the transmission gear member provided on a side opposite to the driven gear portion with the support shaft interposed therebetween, and a second rack gear portion provided on the second housing along the connector fitting direction, and movable relative to the first housing along the connector fitting direction by rotation of the main drive gear portion.Type: ApplicationFiled: June 24, 2019Publication date: January 9, 2020Applicant: Yazaki CorporationInventors: Kengo AOSHIMA, Takao Murakami
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Patent number: 10122394Abstract: An attachment structure for an electronic component accommodation box including a vibration proof structure includes a damping structure between a vehicle body side attachment member and a casing in which at least one electronic component is mounted. The damping structure includes first sliding portions, second sliding portions, and damping members interposed between the first sliding portions and the second sliding portions. The damping members generate sliding resistance between each of the first sliding portions and each of the second sliding portions when the casing moves relative to the vehicle body side attachment member.Type: GrantFiled: June 6, 2017Date of Patent: November 6, 2018Assignee: YAZAKI CORPORATIONInventors: Naoyuki Ikeda, Toshitaka Iwasaki, Hiroki Kayamori, Takao Murakami
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Publication number: 20170359093Abstract: An attachment structure for an electronic component accommodation box including a vibration proof structure includes a damping structure between a vehicle body side attachment member and a casing in which at least one electronic component is mounted. The damping structure includes first sliding portions, second sliding portions, and damping members interposed between the first sliding portions and the second sliding portions. The damping members generate sliding resistance between each of the first sliding portions and each of the second sliding portions when the casing moves relative to the vehicle body side attachment member.Type: ApplicationFiled: June 6, 2017Publication date: December 14, 2017Inventors: Naoyuki Ikeda, Toshitaka Iwasaki, Hiroki Kayamori, Takao Murakami
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Patent number: 9662953Abstract: A strut-type suspension device includes an upper support; a shock absorber that is supported by the upper support; a coil spring that is arranged surrounding the shock absorber, between an upper spring seat and a lower spring seat; and a bearing that is arranged between the upper spring seat and the upper support. The upper support includes a mounting portion that has a support surface for supporting the bearing. The support surface is inclined with respect to a plane perpendicular to a shock absorber axis.Type: GrantFiled: March 6, 2015Date of Patent: May 30, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takao Murakami, Yuji Homma, Naoya Asaoka
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Publication number: 20170008362Abstract: A strut-type suspension device includes an upper support; a shock absorber that is supported by the upper support; a coil spring that is arranged surrounding the shock absorber, between an upper spring seat and a lower spring seat; and a bearing that is arranged between the upper spring seat and the upper support. The upper support includes a mounting portion that has a support surface for supporting the bearing. The support surface is inclined with respect to a plane perpendicular to a shock absorber axis.Type: ApplicationFiled: March 6, 2015Publication date: January 12, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takao MURAKAMI, Yuji HOMMA, Naoya ASAOKA
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Publication number: 20140007210Abstract: By reducing both a WAP and an LAP to a certain value or lower, biometric authentication with high security is implemented. A template and a query sample are generated from biometric data of a user and they are matched. There, a query sample-specific impostor distribution, to which a score of a query sample and a template of an impostor follows, and a template-specific impostor distribution, to which a score of a template arid a query sample of an impostor follows, are estimated and user judgment is performed using one of them in which false accept is more difficult to occur.Type: ApplicationFiled: December 6, 2012Publication date: January 2, 2014Applicant: Hitachi, Ltd.Inventors: TAKAO MURAKAMI, Kenta Takahashi
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Publication number: 20130151562Abstract: The use of the known feature amounts results in a low level of accuracy in finding similar files. To deal with this problem, the similar file determination process of this invention involves dividing a file, while at the same time changing a file dividing condition, and repeating this dividing operation until the total number of divided pieces of data exceeds a predetermined number. For each of the divided pieces of data thus obtained a hash value is calculated and all the hash values are output.Type: ApplicationFiled: February 2, 2011Publication date: June 13, 2013Applicant: HITACHI, LTD.Inventors: Yasuhiro Fujii, Susumu Serita, Satoshi Kai, Takao Murakami, Takahiro Nakano
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Patent number: 8437511Abstract: A 1:N identification system having high convenience and safety is to be provided. An authentication client includes at least one biometric information input sensor and a feature extraction function. A database includes an enrollee ID and registered templates of biometric information of at least one kind every enrollee and includes a score table. An authentication server includes a prior probability setting function, a 1:N fast matching function for successively matching the feature with the registered templates of the enrollees and discontinuing matching processing when the number of times of matching has exceeded a predetermined threshold, a delta score calculation function for calculating a delta score by using a score obtained by the 1:N fast matching and using the score table, a posterior probability calculation function for calculating posterior probabilities respectively of the enrollees on the basis of the score and the delta score, and an authentication object user identification function.Type: GrantFiled: September 2, 2010Date of Patent: May 7, 2013Assignee: Hitachi, Ltd.Inventors: Takao Murakami, Kenta Takahashi
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Patent number: 8433922Abstract: In additional enrollment of a template in a biometric authentication system, the template is automatically enrolled on the basis of a plurality of authentication results to assure a user's convenience and security. A post-migration authentication server receives a first template and a second template from a post-migration authentication terminal, performs authentication on the basis of the comparison result between the received first template and the user's preliminarily first enrolled template, and provisionally enrolls the first template and the second template. It repeats the reception, authentication, and provisional enrollment and calculates a match probability from a plurality of comparison results of the provisionally first enrolled templates, determines whether or not to store a second enrolled template on the basis of the match probability, and automatically enrolls the second template in the post-migration authentication server.Type: GrantFiled: September 1, 2010Date of Patent: April 30, 2013Assignee: Hitachi, Ltd.Inventors: Yosuke Kaga, Osamu Takata, Yoshiaki Isobe, Kenta Takahashi, Takao Murakami
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Biometric authentication system, authentication client terminal, and biometric authentication method
Patent number: 8340361Abstract: A biometric authentication system, authentication client terminal, and biometric authentication method are provided to reduce an expected value of the number of inputs of biometric data for authentication, while effectively preventing forgery. In a biometric authentication system, prior probabilities of enrolled users un and non-enrolled user u0 are previously set. 1:N matching is performed between feature data of a claimant v and matching feature data. The matching score is calculated for each enrolled user un. A ratio of the likelihood v=un to the likelihood v?un is calculated for each enrolled user un using the calculated matching scores. Posterior probabilities of the enrolled users un and non-enrolled user u0 are calculated, using the likelihood ratios, and the prior probabilities of both the enrolled users un and the non-enrolled user u0. Then, determination is made by comparing each posterior probability with a first threshold.Type: GrantFiled: February 27, 2009Date of Patent: December 25, 2012Assignee: Hitachi, Ltd.Inventors: Takao Murakami, Kenta Takahashi -
Patent number: 8332916Abstract: A service providing system using the biometrics identification without inputting the user ID poses the problem that the consideration of a service is erroneously claimed to the registered user not using the service due to the erroneous identification. According to this invention, the threshold of the value of the degree of similarity for user identification is set strictly for each registered biometrics information of the user in accordance with the declaration of the loss caused by the erroneous identification.Type: GrantFiled: February 26, 2009Date of Patent: December 11, 2012Assignee: Hitachi, Ltd.Inventors: Yoshiaki Isobe, Takao Murakami, Kenta Takahashi
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Publication number: 20120221574Abstract: A pivot is determined from enrolled data by a pivot determination unit, raw data is acquired, features are extracted from the raw data, a score is calculated as one of a distance and a degree of similarity between the features, an index vector is generated by using the score for the pivot, a ? score is calculated as one of a distance and a degree of similarity between the index vectors, a parameter of each non-pivot including a regression coefficient is trained by using training data, order to select the non-pivots is, by using the ? score between search data and the non-pivot as well as the regression coefficient, determined in descending order of posterior probability through logistic regression, and a search result is outputted based on the score between the search data and the enrolled data.Type: ApplicationFiled: February 9, 2012Publication date: August 30, 2012Applicant: HITACHI, LTD.Inventors: Takao Murakami, Kenta Takahashi
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Publication number: 20110182480Abstract: A 1:N identification system having high convenience and safety is to be provided. An authentication client includes at least one biometric information input sensor and a feature extraction function. A database includes an enrollee ID and registered templates of biometric information of at least one kind every enrollee and includes a score table. An authentication server includes a prior probability setting function, a 1:N fast matching function for successively matching the feature with the registered templates of the enrollees and discontinuing matching processing when the number of times of matching has exceeded a predetermined threshold, a delta score calculation function for calculating a delta score by using a score obtained by the 1:N fast matching and using the score table, a posterior probability calculation function for calculating posterior probabilities respectively of the enrollees on the basis of the score and the delta score, and an authentication object user identification function.Type: ApplicationFiled: September 2, 2010Publication date: July 28, 2011Applicant: HITACHI, LTD.Inventors: Takao MURAKAMI, Kenta TAKAHASHI
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Publication number: 20110138187Abstract: In additional enrollment of a template in a biometric authentication system, the template is automatically enrolled on the basis of a plurality of authentication results to assure a user's convenience and security. A post-migration authentication server receives a first template and a second template from a post-migration authentication terminal, performs authentication on the basis of the comparison result between the received first template and the user's preliminarily first enrolled template, and provisionally enrolls the first template and the second template. It repeats the reception, authentication, and provisional enrollment and calculates a match probability from a plurality of comparison results of the provisionally first enrolled templates, determines whether or not to store a second enrolled template on the basis of the match probability, and automatically enrolls the second template in the post-migration authentication server.Type: ApplicationFiled: September 1, 2010Publication date: June 9, 2011Applicant: Hitachi, Ltd.Inventors: Yosuke KAGA, Osamu TAKATA, Yoshiaki ISOBE, Kenta TAKAHASHI, Takao MURAKAMI
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Patent number: 7786833Abstract: An edgewise coil which includes a non-circular cross-sectional shaped conductor having a cross-sectional shape defined by a pair of first and second long sides and a pair of first and second short sides, the shaped conductor wire being laminated while being bended with using the first short side as a bending fulcrum so as to form a plurality of laminated wire layers having a rectangular shape in a plan view, wherein the pair of long sides include, in a longitudinal cross section in a pre-bending-process state before the shaped conductor wire is bended, a pair of straight-line regions extending from both ends of the second sides so as to be parallel to each other and a pair of tapered regions extending between the straight-line regions and the first short side, and the pair of tapered regions, in a longitudinal cross section in the pre-bending-process state, come closer to each other as they approach the first short side.Type: GrantFiled: July 11, 2006Date of Patent: August 31, 2010Assignee: Suncall CorporationInventor: Takao Murakami
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Publication number: 20100141373Abstract: An edgewise coil which includes a non-circular cross-sectional shaped conductor having a cross-sectional shape defined by a pair of first and second long sides and a pair of first and second short sides, the shaped conductor wire being laminated while being bended with using the first short side as a bending fulcrum so as to form a plurality of laminated wire layers having a rectangular shape in a plan view, wherein the pair of long sides include, in a longitudinal cross section in a pre-bending-process state before the shaped conductor wire is bended, a pair of straight-line regions extending from both ends of the second sides so as to be parallel to each other and a pair of tapered regions extending between the straight-line regions and the first short side, and the pair of tapered regions, in a longitudinal cross section in the pre-bending-process state, come closer to each other as they approach the first short side.Type: ApplicationFiled: July 11, 2006Publication date: June 10, 2010Inventor: Takao Murakami
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Publication number: 20100011423Abstract: A service providing system using the biometrics identification without inputting the user ID poses the problem that the consideration of a service is erroneously claimed to the registered user not using the service due to the erroneous identification. According to this invention, the threshold of the value of the degree of similarity for user identification is set strictly for each registered biometrics information of the user in accordance with the declaration of the loss caused by the erroneous identification.Type: ApplicationFiled: February 26, 2009Publication date: January 14, 2010Inventors: Yoshiaki Isobe, Takao Murakami, Kenta Takahashi
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Biometric authentication system, authentication client terminal, and biometric authentication method
Publication number: 20090289760Abstract: A biometric authentication system, authentication client terminal, and biometric authentication method are provided to reduce an expected value of the number of inputs of biometric data for authentication, while effectively preventing forgery. In a biometric authentication system, prior probabilities of enrolled users un and non-enrolled user u0 are previously set. 1:N matching is performed between feature data of a claimant v and matching feature data. The matching score is calculated for each enrolled user un. A ratio of the likelihood v=un to the likelihood v?un is calculated for each enrolled user un using the calculated matching scores. Posterior probabilities of the enrolled users un and non-enrolled user u0 are calculated, using the likelihood ratios, and the prior probabilities of both the enrolled users un and the non-enrolled user u0. Then, determination is made by comparing each posterior probability with a first threshold.Type: ApplicationFiled: February 27, 2009Publication date: November 26, 2009Inventors: Takao Murakami, Kenta Takahashi -
Patent number: 7481674Abstract: The invention provides a connector having a pair of first and second connector housings for preventing looseness between the connector housings in lateral and longitudinal directions of the connector, surely eliminating frictional wear of male and female terminals in the connector housings. The connector can reliably resist to an external vibration force. A male connector housing 13 is resiliently urged by a waterproof packing 32 toward a female connector housing 36. The male connector housing 13 has an inner housing 25 formed with a plurality of looseness prohibiting projections 30. The looseness prohibiting projection 30 has a tapered surface 30a. An inner surface of a peripheral wall 39 of the female connector housing 36 is formed with a tapered surface 41 engaged with the tapered surface 30a on complete mating of the connector housings 13, 36.Type: GrantFiled: December 24, 2004Date of Patent: January 27, 2009Assignee: Yazaki CorporationInventors: Takao Murakami, Seiji Kozono