Patents by Inventor Tatsuro Kawakami
Tatsuro Kawakami 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: 11038991Abstract: An abnormality detection device includes: a receiver, a reception predictor, frame information storage, and an abnormality determiner. The receiver receives a communication frame via a communication network. The frame information storage stores information regarding the communication frame. The reception predictor calculates and sets a predicted time range including a scheduled reception time of the communication frame of a target frame type from among a plurality of frame types received by the receiver by referencing the frame information storage and the reception time of the communication frame when the communication frame is received. The abnormality determiner determines the target communication frame is an abnormal frame when the target communication frame is received at a time outside the predicted reception range.Type: GrantFiled: September 10, 2018Date of Patent: June 15, 2021Assignee: DENSO CORPORATIONInventors: Tatsuro Kawakami, Takeshi Sugashima
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Publication number: 20190104204Abstract: An abnormality detection device includes: a receiver, a reception predictor, frame information storage, and an abnormality determiner. The receiver receives a communication frame via a communication network. The frame information storage stores information regarding the communication frame. The reception predictor calculates and sets a predicted time range including a scheduled reception time of the communication frame of a target frame type from among a plurality of frame types received by the receiver by referencing the frame information storage and the reception time of the communication frame when the communication frame is received. The abnormality determiner determines the target communication frame is an abnormal frame when the target communication frame is received at a time outside the predicted reception range.Type: ApplicationFiled: September 10, 2018Publication date: April 4, 2019Inventors: Tatsuro KAWAKAMI, Takeshi SUGASHIMA
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Patent number: 9177117Abstract: A secure module includes a generating unit that executes generation processing of generating a scanning program that causes scan processing, which generates unique code for a program under test, to be executed at a connected device and further executes update processing of randomly updating contents of the scanning program; a storage device storing therein the unique code for the program under test; and an authenticating unit that if the scanning program is executed by the connected device and executed with respect to the program under test stored at a designated storage area in the connected device, authenticates validity of the program under test stored at the designated storage area, based on the unique code stored in the storage device and execution results of the scanning program executed at the connected device.Type: GrantFiled: April 26, 2011Date of Patent: November 3, 2015Assignees: FUJITSU LIMITED, FUJITSU SEMICONDUCTOR LIMITEDInventors: Kiyoshi Kohiyama, Masakazu Takakusu, Tatsuro Kawakami, Toshiyuki Yoshitake
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Publication number: 20150039900Abstract: A method for program execution in a system including a decryption apparatus that prevents external referencing and an information processing apparatus communicating therewith and accessing first and third storage areas, includes: the decryption apparatus detecting a series of commands from a command group obtained by decrypting at least a portion of a program stored in the first storage area; obfuscating and storing the series of commands to a second storage area storing the decrypted portion and within the first storage area; assigning, when an execution request is received from the information processing apparatus, the third storage area having a capacity equivalent to any one series of commands; and storing to the third storage area, a series of certain commands stored in the second area and obtained by canceling obfuscation of the commands that correspond to the execution request; and the information processing unit executing the series of certain commands.Type: ApplicationFiled: June 30, 2014Publication date: February 5, 2015Inventor: Tatsuro KAWAKAMI
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Publication number: 20120042380Abstract: A secure module includes a generating unit that executes generation processing of generating a scanning program that causes scan processing, which generates unique code for a program under test, to be executed at a connected device and further executes update processing of randomly updating contents of the scanning program; a storage device storing therein the unique code for the program under test; and an authenticating unit that if the scanning program is executed by the connected device and executed with respect to the program under test stored at a designated storage area in the connected device, authenticates validity of the program under test stored at the designated storage area, based on the unique code stored in the storage device and execution results of the scanning program executed at the connected device.Type: ApplicationFiled: April 26, 2011Publication date: February 16, 2012Applicants: FUJITSU SEMICONDUCTOR LIMITED, FUJITSU LIMITEDInventors: Kiyoshi KOHIYAMA, Masakazu Takakusu, Tatsuro Kawakami, Toshiyuki Yoshitake
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Patent number: 7606689Abstract: A design support system is provided, which accurately simulates the behavior of a flexible medium in a convey path even if the flexible medium exhibits different flexural stiffness in different bending directions. In a design support system which supports the user to design a convey path by simulating the behavior of a flexible medium conveyed in the convey path, a flexible medium model creation module (102), when a flexible medium to be conveyed is defined in the convey path defined by using a convey path definition module (101), creates a flexible medium model representing the flexible medium by segmenting the flexible medium into a plurality of stiff body elements each having a mass, and connecting the respective adjacent stiff body elements with two springs, that is, a rotational spring and translational spring whose spring constants change depending on the direction of flexural deformation of the flexible medium.Type: GrantFiled: November 16, 2006Date of Patent: October 20, 2009Assignee: Canon Kabushiki KaishaInventor: Tatsuro Kawakami
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Patent number: 7580815Abstract: When the convey behavior of a flexible medium conveyed in a conveying path is analyzed by simulation, a design support apparatus of this invention executes 1) processing for approximating a nip on a model to an actual nip, 2) processing for matching a feature point of a drive chart with a calculation step upon making a numerical calculation for solving a motion of a flexible medium using the drive chart, and 3) processing for reflecting velocity variations due to deformation of a convey roller pair, thus implementing a simulation with high accuracy. When the design support apparatus of this invention is used, even a designer who does not have expert knowledge on simulation can analyze the convey behavior of the flexible medium conveyed in the conveying path with relatively higher accuracy.Type: GrantFiled: October 12, 2005Date of Patent: August 25, 2009Assignee: Canon Kabushiki KaishaInventors: Tatsuro Kawakami, Kenji Taki, Takao Kikutani
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Patent number: 7398135Abstract: A method for simulating the behavior of a flexible medium which is conveyed along a conveying path constructed of a pair of conveyor rollers includes the steps of dividing the surfaces of the conveyor rollers into a contact region and a non-contact region and setting a first peripheral speed and a second peripheral speed for the contact region and the non-contact region, respectively, and performing a simulation under a condition that a conveying force corresponding to the difference between the second peripheral speed and a moving speed of the flexible medium is applied to the flexible medium when the flexible medium reaches the non-contact region of the conveyor rollers and a condition that the flexible medium is conveyed at the first peripheral speed when the flexible medium reaches the contact region of the conveyor rollers.Type: GrantFiled: December 9, 2003Date of Patent: July 8, 2008Assignee: Canon Kabushiki KaishaInventors: Masahiko Ogawa, Tatsuro Kawakami
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Patent number: 7209872Abstract: A design support system is provided, which accurately simulates the behavior of a flexible medium in a convey path even if the flexible medium exhibits different flexural stiffness in different bending directions. In a design support system which supports the user to design a convey path by simulating the behavior of a flexible medium conveyed in the convey path, a flexible medium model creation module (102), when a flexible medium to be conveyed is defined in the convey path defined by using a convey path definition module (101), creates a flexible medium model representing the flexible medium by segmenting the flexible medium into a plurality of stiff body elements each having a mass, and connecting the respective adjacent stiff body elements with two springs, that is, a rotational spring and translational spring whose spring constants change depending on the direction of flexural deformation of the flexible medium.Type: GrantFiled: February 23, 2004Date of Patent: April 24, 2007Assignee: Canon Kabushiki KaishaInventor: Tatsuro Kawakami
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Publication number: 20070083349Abstract: A design support system is provided, which accurately simulates the behavior of a flexible medium in a convey path even if the flexible medium exhibits different flexural stiffness in different bending directions. In a design support system which supports the user to design a convey path by simulating the behavior of a flexible medium conveyed in the convey path, a flexible medium model creation module (102), when a flexible medium to be conveyed is defined in the convey path defined by using a convey path definition module (101), creates a flexible medium model representing the flexible medium by segmenting the flexible medium into a plurality of stiff body elements each having a mass, and connecting the respective adjacent stiff body elements with two springs, that is, a rotational spring and translational spring whose spring constants change depending on the direction of flexural deformation of the flexible medium.Type: ApplicationFiled: November 16, 2006Publication date: April 12, 2007Applicant: Canon Kabushiki KaishaInventor: TATSURO KAWAKAMI
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Simulation apparatus, simulation method therefor, and program for implementing the simulation method
Patent number: 7165016Abstract: A simulation apparatus which is capable of expressing a curling shape of a flexible medium such as a paper sheet in a simple manner, when evaluating functions of a conveying path. The behavior of a flexible medium conveyed in a conveying path is simulated. A display displays at least one component in the conveying path defined in advance on a display screen. A CPU interactively sets a shape of the flexible medium and an amount of curling of the flexible medium, the behavior of which in the conveying path is simulated on the display screen on which the component is displayed by the display.Type: GrantFiled: June 3, 2005Date of Patent: January 16, 2007Assignee: Canon Kabushiki KaishaInventors: Eiji Toyosawa, Tatsuro Kawakami, Kenji Taki -
Publication number: 20060077246Abstract: When the convey behavior of a flexible medium conveyed in a conveying path is analyzed by simulation, a design support apparatus of this invention executes 1) processing for approximating a nip on a model to an actual nip, 2) processing for matching a feature point of a drive chart with a calculation step upon making a numerical calculation for solving a motion of a flexible medium using the drive chart, and 3) processing for reflecting velocity variations due to deformation of a convey roller pair, thus implementing a simulation with high accuracy. When the design support apparatus of this invention is used, even a designer who does not have expert knowledge on simulation can analyze the convey behavior of the flexible medium conveyed in the conveying path with relatively higher accuracy.Type: ApplicationFiled: October 12, 2005Publication date: April 13, 2006Applicant: Canon Kabushiki KaishaInventors: Tatsuro Kawakami, Kenji Taki, Takao Kikutani
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Simulation apparatus, simulation method therefor, and program for implementing the simulation method
Publication number: 20050273299Abstract: A simulation apparatus which is capable of expressing a curling shape of a flexible medium such as a paper sheet in a simple manner, when evaluating functions of a conveying path. The behavior of a flexible medium conveyed in a conveying path is simulated. A display 56 displays at least one component in the conveying path defined in advance on a display screen. A CPU 51 interactively sets a shape of the flexible medium and an amount of curling of the flexible medium, the behavior of which in the conveying path is simulated on the display screen on which the component is displayed by the display 56.Type: ApplicationFiled: June 3, 2005Publication date: December 8, 2005Applicant: Canon Kabushiki KaishaInventors: Eiji Toyosawa, Tatsuro Kawakami, Kenji Taki -
Publication number: 20040167759Abstract: A design support system is provided, which accurately simulates the behavior of a flexible medium in a convey path even if the flexible medium exhibits different flexural stiffness in different bending directions. In a design support system which supports the user to design a convey path by simulating the behavior of a flexible medium conveyed in the convey path, a flexible medium model creation module (102), when a flexible medium to be conveyed is defined in the convey path defined by using a convey path definition module (101), creates a flexible medium model representing the flexible medium by segmenting the flexible medium into a plurality of stiff body elements each having a mass, and connecting the respective adjacent stiff body elements with two springs, that is, a rotational spring and translational spring whose spring constants change depending on the direction of flexural deformation of the flexible medium.Type: ApplicationFiled: February 23, 2004Publication date: August 26, 2004Applicant: Canon Kabushiki KaishaInventor: Tatsuro Kawakami
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Publication number: 20040122551Abstract: A method for simulating the behavior of a flexible medium which is conveyed along a conveying path constructed of a pair of conveyor rollers includes the steps of dividing the surfaces of the conveyor rollers into a contact region and a non-contact region and setting a first peripheral speed and a second peripheral speed for the contact region and the non-contact region, respectively, and performing a simulation under a condition that a conveying force corresponding to the difference between the second peripheral speed and a moving speed of the flexible medium is applied to the flexible medium when the flexible medium reaches the non-contact region of the conveyor rollers and a condition that the flexible medium is conveyed at the first peripheral speed when the flexible medium reaches the contact region of the conveyor rollers.Type: ApplicationFiled: December 9, 2003Publication date: June 24, 2004Applicant: Canon Kabushiki KaishaInventors: Masahiko Ogawa, Tatsuro Kawakami
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Patent number: 5491305Abstract: A vibration transmission plate for inputting coodinates has a two-layer structure with an input layer for inputting vibration and a vibration transmission layer for transmitting the vibration. By using a member having a flexural modulus of elasticity of 180.0-720.0 kgf/mm.sup.2 as the input layer, accuracy in detecting the input position of the vibration can be improved. By forming a member made of glass fibers, which can restrict the direction of the transmission of the vibration between the input layer and the vibration transmission layer as an intermediate layer, the accuracy can also be improved.Type: GrantFiled: January 15, 1993Date of Patent: February 13, 1996Assignee: Canon Kabushiki KaishaInventors: Tatsuro Kawakami, Yuichiro Yoshimura, Katsuyuki Kobayashi