Patents by Inventor Shu Tezuka
Shu Tezuka 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: 7523059Abstract: Protects a highly confidential parameter against leakage in a distributed computing system. An example distributed computing system causing a plurality of partial calculations to be performed includes parameter storage for storing a parameter set having a plurality of parameters, conversion means for converting a linear parameter, sending means for sending each of converted parameter sets in association with parameter identifying information for identifying the parameter set to cause each of a plurality of calculation processing devices to perform each of a plurality of partial calculations, conversion ratio storage means for storing a conversion ratio of a parameter, conversion ratio searching means for searching for a conversion ratio corresponding to a parameter identifying information, and inversion outputting means for generating a partial calculation result by multiplying a calculation result by an inverse number of the conversion ratio and for outputting a set of the partial calculation results.Type: GrantFiled: July 14, 2004Date of Patent: April 21, 2009Assignee: International Business Machines CorporationInventors: Shu Tezuka, Hiroki Murata
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Patent number: 7107150Abstract: There have been problems in the facility information management system arts because when a distance-based facility database is searched for the facility information by specifying the name and distance of a facility, the location and position of a specific facility must be found on a figure such as a map. Such a location is not easily pointed out especially when the facility is damaged. To overcome the above problems, the present invention relates the distance-based facility data with map data and allows a generation of graphical figure data to be overlaid on a map from the numerical data corresponding to the facility parameters stored in the distance-based facility data.Type: GrantFiled: November 10, 2003Date of Patent: September 12, 2006Assignee: Hitachi, Ltd.Inventors: Kazuaki Iwamura, Keiro Muro, Shintaro Hatsumoto, Shu Tezuka, Yukio Funyu
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Patent number: 7010564Abstract: It is one object of the present invention to perform regional optimization while taking spatial continuity into account, and to provide higher-level spatial data mining.Type: GrantFiled: April 23, 2001Date of Patent: March 7, 2006Assignee: International Business Machines CorporationInventors: Yasuhiko Morimoto, Shu Tezuka, Kazuyoshi Hidaka
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Publication number: 20050021438Abstract: Protects a highly confidential parameter against leakage in a distributed computing system. An example distributed computing system causing a plurality of partial calculations to be performed includes parameter storage for storing a parameter set having a plurality of parameters, conversion means for converting a linear parameter, sending means for sending each of converted parameter sets in association with parameter identifying information for identifying the parameter set to cause each of a plurality of calculation processing devices to perform each of a plurality of partial calculations, conversion ratio storage means for storing a conversion ratio of a parameter, conversion ratio searching means for searching for a conversion ratio corresponding to a parameter identifying information, and inversion outputting means for generating a partial calculation result by multiplying a calculation result by an inverse number of the conversion ratio and for outputting a set of the partial calculation results.Type: ApplicationFiled: July 14, 2004Publication date: January 27, 2005Applicant: International Business Machines CorporationInventors: Shu Tezuka, Hiroki Murata
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Publication number: 20040111213Abstract: There have been problems in the facility information management system arts because when a distance-based facility database is searched for the facility information by specifying the name and distance of a facility, the location and position of a specific facility must be found on a figure such as a map. Such a location is not easily pointed out especially when the facility is damaged. To overcome the above problems, the present invention relates the distance-based facility data with map data and allows a generation of graphical figure data to be overlaid on a map from the numerical data corresponding to the facility parameters stored in the distance-based facility data.Type: ApplicationFiled: November 10, 2003Publication date: June 10, 2004Inventors: Kazuaki Iwamura, Keiro Muro, Shintaro Hatsumoto, Shu Tezuka, Yukio Funyu
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Publication number: 20020059273Abstract: It is one object of the present invention to perform regional optimization while taking spatial continuity into account, and to provide higher-level spatial data mining.Type: ApplicationFiled: April 23, 2001Publication date: May 16, 2002Applicant: International Business Machines CorporationInventors: Yasuhiko Morimoto, Shu Tezuka, Kazuyoshi Hidaka
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Patent number: 6286100Abstract: A method for hiding message information into media information in frequency space. The data hiding method has high resistance to removal or change of message information embedded into media information and effectively maintain hidden message information even when signal processing is performed by employing a frequency filter. More specifically, in order to hide message information (m) into media information (M), the frequency transform of the message information (m) and the media information (M) are performed, and frequency spectra f1 and f2 are obtained. Next, from the frequency spectrum f2 of the message information (m), a region containing feature frequency components representative of the features of the message information (m) in real space is extracted as the base region B. Then, n copies of the base region B are generated, and in frequency space, the n copies are dispersedly arranged.Type: GrantFiled: August 22, 1997Date of Patent: September 4, 2001Assignee: International Business Machines CorporationInventors: Norishige Morimoto, Shu Tezuka, Syoiti Ninomiya
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Patent number: 5872725Abstract: A method of generating a low-discrepancy sequence at high speed including the steps of: (a) expanding an i-th coordinate value u.sup.(1) (1.ltoreq.i.ltoreq.k) of an n-th element (U.sub.n (1), . . . , U.sub.n (k)) of the low-discrepancy sequence in radix b, and storing m components generated by the expansion of each said coordinate value in sequence into a first storage, wherein the n is an integer equal to or more than 1 and the b is a prime number equal to or more than k; (b) expanding the number n in radix b, and storing the generated expansion (n.sub.m,.sup.(1), n.sub.m-1, . . . , n.sub.1) in sequence into a second storage; (c) scanning the second storage in sequence, and detecting a minimum order j, wherein n is not equal to b-1; (d) in response to the step (c), reading out j-th row components of a generator matrix T.sup.(1) for the i-th coordinate (1.ltoreq.i.ltoreq.Type: GrantFiled: September 25, 1997Date of Patent: February 16, 1999Assignee: International Business Machines CorporationInventors: Syoiti Ninomiya, Shu Tezuka
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Patent number: 5790442Abstract: A method and system are provided for generating a low-discrepancy sequence at high speed, comprising means for expanding an i-th coordinate value u.sub.n.sup.(i) (1.ltoreq.i.ltoreq.k) of an n-th element of the low-discrepancy sequence (u.sub.n.sup.i, . . . , u.sub.n.sup.(k)) in b scale, and storing m components created by the expansion of each value in sequence into a first storage means, wherein the above n is an integer equal to or more than 1 and the above b is a prime number equal to or more than k; means for expanding the number n in b scale, and storing the created expansion (n.sub.m, n.sub.m-1, . . . , n.sub.1) in sequence into a second storage means; means for scanning the second storage means in sequence, and detecting a minimum order j wherein nj is not equal to b-1; and means, respondent to the means for scanning, for reading out j-th row components of a low-discrepancy generator matrix T.sup.(i) stored in advance for an i-th coordinate value (1.ltoreq.i.ltoreq.Type: GrantFiled: March 13, 1996Date of Patent: August 4, 1998Assignee: International Business Machines CorporationInventors: Syoiti Ninomiya, Shu Tezuka
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Patent number: 5546572Abstract: A retrieving key representing position information is used to retrieve image information containing the retrieving key information at a high speed and high precision. First a retrieving key is inputted to display retrieval information. The retrieving key is used to retrieve an image having a large size relative to a geometric distortion error, and the longitude/latitude conversion coefficients of the retrieved image are corrected. By using the corrected longitude/latitude conversion coefficients, an image having a small size relative to the geometric distortion error is retrieved, and the retrieved image is subject to distortion correction and image magnification.Type: GrantFiled: August 25, 1992Date of Patent: August 13, 1996Assignee: Hitachi, Ltd.Inventors: Youichi Seto, Masahiro Kikuchi, Takatoshi Kodaira, Shu Tezuka, Fuminobu Komura, Kuniaki Matsumoto
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Patent number: 5533841Abstract: To allow automatic determination of the order of drilling in slot drilling.The positions of holes located along a line are described via a binary vector. The order of drilling is also described via a binary vector. The former binary vector is made to correspond to the latter binary vector through a conversion matrix, where every corresponding partial matrix is regular. The positions of the holes are determined from the drilling order, or the drilling order is determined from the positions of the holes by their correspondence.Type: GrantFiled: December 23, 1994Date of Patent: July 9, 1996Assignee: International Business Machines CorporationInventors: Kazuo Iwano, Shinji Misono, Shu Tezuka
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Patent number: 5046036Abstract: A pseudorandom number generator includes:an M-sequence generator having a plurality of stages a.sub.i ; anda matrix product circuit which combines a matrix G having components g.sub.ji with the stages a.sub.i to provide output elements b.sub.j of a number, each b.sub.j being represented by the expression,b.sub.j =.SIGMA..sub.i a.sub.j g.sub.ji.Type: GrantFiled: March 18, 1988Date of Patent: September 3, 1991Assignee: International Business Machines CorporationInventor: Shu Tezuka