Patents by Inventor Ken Yokoyama
Ken Yokoyama 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: 20140006882Abstract: The present invention has been made to provide a screen generation program, a screen generation apparatus, and a screen generation method that generate a screen displayed on a client. A screen generation program allows a computer to execute: an acquisition step that acquires first data which is data sent from a server to client and which allows the client to display a first screen for receiving operation performed by a user and second data which is data sent from the client to server and which indicates the operation received by the first screen displayed on the client; and a generation step that generates, based on the first and second data acquired by the acquisition step, third data for displaying a second screen obtained by adding operation information which is based on the second data to the first screen.Type: ApplicationFiled: September 5, 2013Publication date: January 2, 2014Applicant: FUJITSU LIMITEDInventors: Ken YOKOYAMA, Kazumi KUBOTA
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Patent number: 8594517Abstract: An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the respective patches. The error of a colorimetric value due to thermochromism is reduced by placing a patch with a colorimetric value which has a low temperature dependence so as to be detected earlier, and a patch with a colorimetric value which has a high temperature dependence so as to be detected later.Type: GrantFiled: February 9, 2011Date of Patent: November 26, 2013Assignee: Canon Kabushiki KaishaInventors: Masatake Usui, Hiroshi Kita, Shun-ichi Ebihara, Ken Yokoyama
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Patent number: 8582447Abstract: A transmission destination of a packet to be transmitted by a web server (11) and an application server (21) incorporated in the same machine (30) is set to a loopback device (50). When a packet is received from one of the servers (11 and 21), the loopback device (50) decides whether or not a combination of a source IP address, a source port number, and a destination port number in the packet is known. If the combination is known, the source IP address and a destination IP address of the received packet are exchanged, and the packet is transmitted to the other server. Further, the packet received from the one of the servers and the packet transmitted to the one of the servers are copied, and the copied packets are transmitted to a communication state visualizing machine (90).Type: GrantFiled: July 28, 2009Date of Patent: November 12, 2013Assignee: Fujitsu LimitedInventor: Ken Yokoyama
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Patent number: 8560667Abstract: An analysis method for carrying out an analysis for responses of a computer system including a plurality of servers, includes: obtaining data concerning a CPU utilization ratio of each of the plurality of servers from the computer system, and storing the data concerning the CPU utilization ratio into a CPU utilization ratio storage; obtaining processing history data generated in the computer system, generating data of a request frequency by users of the computer system, and storing the processing history data into a request frequency data storage; and estimating an average delay time in each server by using the CPU utilization ratio of each server, which is stored in the CPU utilization ratio storage, and the request frequency stored in the request frequency data storage, and storing the estimated average delay time into a server delay time storage. By carrying out such a processing, the analysis can be carried out without changing the computer system to be analyzed and any additional cost.Type: GrantFiled: April 25, 2007Date of Patent: October 15, 2013Assignee: Fujitsu LimitedInventors: Shinji Kikuchi, Ken Yokoyama, Akira Takeyama, Kenichi Shimazaki, Takamitsu Maeda, Koji Ishibashi, Seiya Shindo, Koutarou Tsuro
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Patent number: 8495006Abstract: A computer-readable, non-transitory medium stores the system analysis program which can accurately analyze the operational status of a system without modifying functions of the system for providing services. A message analysis unit analyzes the contents of collected messages, and determines the times of occurrence of the messages, the process types requested by the messages, and whether or not each of the messages is a request message or a response message. In response to an instruction for model generation, a model generation unit generates a transaction model satisfying at least one limiting condition related to caller-called relationships between processes, based on a set of messages selected in accordance with a selection criterion based on the certainty of existence of caller-called relationships. Then, in response to an instruction for analysis, an analysis unit analyzes the processing status of a transaction based on a protocol log conforming to the transaction model.Type: GrantFiled: August 10, 2012Date of Patent: July 23, 2013Assignee: Fujitsu LimitedInventors: Lilian Harada, Nobuhiro Yugami, Kenichi Kobayashi, Hiroshi Otsuka, Ken Yokoyama, Riichiro Take, Kazumi Kubota, Yuuji Hotta, Naoki Akaboshi
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Patent number: 8429458Abstract: A system analyzing method for analyzing a transaction system includes firstly extracting a transaction, which is processed by a plurality of servers cooperating with each other in the transaction system, from a message log in which parameters of messages have been subjected to name merge, by using a transaction model which is generated from a set of messages transmitted between the servers during processing of the transaction, and secondly extracting a transaction from a message log from which no transaction is extracted in the firstly extracting, by using a value of a parameter inherited between the servers among parameters in messages included in the message log.Type: GrantFiled: February 16, 2010Date of Patent: April 23, 2013Assignee: Fujitsu LimitedInventor: Ken Yokoyama
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Publication number: 20130038867Abstract: A spectrocolorimeter comprises: a calculation unit configured to calculate wavelengths of dispersing light rays respectively received by a plurality of pixels included in a light detection unit using a correspondence relationship between pixels and wavelengths of a plurality of extremal value points in a profile of dispersing light rays detected by the light detection unit upon execution of colorimetry of a reference object to be measured, wherein when the calculation unit calculates the wavelengths of the dispersing light rays respectively received by the plurality of pixels, the calculation unit adjusts a colorimetry condition for respective extremal value points so that signals to be output from pixels corresponding to the plurality of extremal value points have output levels which are not less than a reference and are not saturated.Type: ApplicationFiled: July 17, 2012Publication date: February 14, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Shun-ichi Ebihara, Hiroshi Kita, Ken Yokoyama
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Publication number: 20120317072Abstract: A computer-readable, non-transitory medium stores the system analysis program which can accurately analyze the operational status of a system without modifying functions of the system for providing services. A message analysis unit analyzes the contents of collected messages, and determines the times of occurrence of the messages, the process types requested by the messages, and whether or not each of the messages is a request message or a response message. In response to an instruction for model generation, a model generation unit generates a transaction model satisfying at least one limiting condition related to caller-called relationships between processes, based on a set of messages selected in accordance with a selection criterion based on the certainty of existence of caller-called relationships. Then, in response to an instruction for analysis, an analysis unit analyzes the processing status of a transaction based on a protocol log conforming to the transaction model.Type: ApplicationFiled: August 10, 2012Publication date: December 13, 2012Applicant: FUJITSU LIMITEDInventors: Lilian Harada, Nobuhiro Yugami, Kenichi Kobayashi, Hiroshi Otsuka, Ken Yokoyama, Riichiro Take, Kazumi Kubota, Yuuji Hotta, Naoki Akaboshi
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Patent number: 8326977Abstract: A system analyzing apparatus obtains a message group including a message ID, a protocol, a type, and a transmission time of messages transmitted/received in a system where a hierarchical structure of protocols is defined. The apparatus detects pairs of a request message and a response message of the same message ID from the obtained message group. The apparatus identifies a request time and a response time of each of the detected pairs. The apparatus searches for a child-layer pair that has a request time and a response time between the request time and the response time of a parent-layer pair arbitrarily selected from among the pairs and that has a protocol in a layer lower than the protocol of the parent-layer pair on the basis of the identified result. The apparatus outputs the found child-layer pair as a candidate pair having a call relationship with the parent-layer pair.Type: GrantFiled: August 27, 2009Date of Patent: December 4, 2012Assignee: Fujitsu LimitedInventors: Junichi Higuchi, Ken Yokoyama
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Patent number: 8305908Abstract: An apparatus for analyzing system identifies plural combinations of downlink packet and uplink packet immediately following the downlink packet under predetermined condition, the uplink packet having a predetermined threshold value or more difference time from the received time of the downlink packet to the received time of the uplink packet. And the apparatus calculates chunk processing time by using a difference between the received time of the identified uplink packet and the received time of the identified downlink packet, which are between the time when the packet of a specific processing request to the lower-level server is received and the time when the packet of the response corresponding to the specific processing request is received, and calculates the total sum of the chunk processing times.Type: GrantFiled: February 2, 2010Date of Patent: November 6, 2012Assignee: Fujitsu LimitedInventor: Ken Yokoyama
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Patent number: 8307245Abstract: A scenario creating apparatus which creates a scenario for verifying operation of an information processing system in which a plurality of servers including a database server are connected, includes a collector that collects messages transmitted and received between the plurality of servers, when operation of the information processing system is being verified by a terminal apparatus that performs verification of operation; an association unit that associates the collected messages with each other; a sorter that sorts work models in ascending order of time at which access is made to the database server, the work models each being a group of the associated messages; and a scenario creating unit that creates the scenario on the basis of the sorted work models.Type: GrantFiled: June 1, 2010Date of Patent: November 6, 2012Assignee: Fujitsu LimitedInventors: Noriaki Murata, Tamami Sugasaka, Ken Yokoyama, Kazuhiro Ikemoto, Yasuo Kubota, Junichi Sakaguchi, Naoki Akaboshi, Taiji Sasage, Syogo Hayashi
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Publication number: 20120246300Abstract: An analyzing apparatus including includes a memory and a processor that executes a procedure, the procedure including controlling the memory to store logs of communication between a first apparatus and a second apparatus, and logs of communication between the second apparatus and a third apparatus, and extracting logs indicating a pair of a first request and a first response corresponding to the first request, communicated between the second apparatus and the third apparatus within a time range from transmission of a second request, transmitted from the first apparatus to the second apparatus, to transmission of a second response corresponding to the second request, transmitted from the second apparatus to the first apparatus, from among the logs stored in the memory.Type: ApplicationFiled: February 23, 2012Publication date: September 27, 2012Applicant: FUJITSU LIMITEDInventors: Atsushi KUBOTA, Ken Yokoyama, Hirokazu Iwakura, Junichi Higuchi
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Patent number: 8270306Abstract: The communication availability information between a plurality of transmitters and a plurality of destinations before the communication state between a transmitter and a destinations in a communication network changes from available to unavailable is compared, layer by layer from an upper layer toward a lower layer, with the communication availability information after change, and destinations in paths where the communication state has changed from available to unavailable are grouped. Thus, the communication network is divided into a plurality of affected ranges and an interface of a device located at the border between the affected ranges is deduced as a fault occurrence point.Type: GrantFiled: November 10, 2005Date of Patent: September 18, 2012Assignee: Fujitsu LimitedInventors: Keiichi Oguro, Yukihiro Watanabe, Kuniaki Shimada, Ken Yokoyama
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Patent number: 8266097Abstract: A computer-readable, non-transitory medium stores the system analysis program which can accurately analyze the operational status of a system without modifying functions of the system for providing services. A message analysis unit analyzes the contents of collected messages, and determines the times of occurrence of the messages, the process types requested by the messages, and whether or not each of the messages is a request message or a response message. In response to an instruction for model generation, a model generation unit generates a transaction model satisfying at least one limiting condition related to caller-called relationships between processes, based on a set of messages selected in accordance with a selection criterion based on the certainty of existence of caller-called relationships. Then, in response to an instruction for analysis, an analysis unit analyzes the processing status of a transaction based on a protocol log conforming to the transaction model.Type: GrantFiled: December 16, 2010Date of Patent: September 11, 2012Assignee: Fujitsu LimitedInventors: Lilian Harada, Nobuhiro Yugami, Kenichi Kobayashi, Hiroshi Otsuka, Ken Yokoyama, Riichiro Take, Kazumi Kubota, Yuuji Hotta, Naoki Akaboshi
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Publication number: 20120219306Abstract: An image forming apparatus includes a detection unit configured to irradiate a patch image formed on a recording material with light, and detect light intensities at a plurality of wavelengths in the light reflected from the patch image; and a determination unit configured to determine that a patch image for which the detection unit is detecting light intensities has transitioned from a first patch image to a second patch image, wherein the determination unit is further configured to determine that the patch image for which the detection unit is detecting has transitioned, in a case where a light intensity at a wavelength for identification of a patch image to be identified, has varied by an amount greater than a first threshold corresponding to that wavelength for identification.Type: ApplicationFiled: January 30, 2012Publication date: August 30, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Hirotaka Shiomichi, Ryuhei Shoji, Ken Yokoyama
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Publication number: 20120154832Abstract: The present invention provides a mechanism that more appropriately evaluates an image defect caused by a specific process in an image forming apparatus. An image forming apparatus of this invention performs colorimetry of a patch image at a spatial resolution corresponding to the spatial frequency of color unevenness caused by a specific process included in an image forming process. A statistic value based on the n-th (n is an integer of 2 or more) order central moment of a specific color component of a colorimetric value obtained by performing colorimetry at the spatial resolution is compared with a reference value, thereby detecting that the color unevenness caused by the specific process has occurred in the patch image.Type: ApplicationFiled: November 22, 2011Publication date: June 21, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Ken Yokoyama, Akihito Sonoda
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Patent number: 8111700Abstract: A packet identification device has a reception unit that successively receives packets. The device has an obtaining unit that obtains, every time a packet is received, an interval of reception times between the received packet and a packet received immediately before the received packet, in the same connection as that of the received packet. The device has an identification unit that identifies the received packet as a packet containing a forefront segment of a plurality of segments constituting one message when the obtained reception time interval is higher than a predetermined threshold value.Type: GrantFiled: August 3, 2009Date of Patent: February 7, 2012Assignee: Fujitsu LimitedInventors: Hirokazu Iwakura, Ken Yokoyama
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Patent number: 8108363Abstract: A system analyzing apparatus analyzes a processing state of a computer system that includes a plurality of types of unit processing. The system analyzing apparatus includes a selecting unit that selects a plurality of representative unit processing based on similarities between individual units of the unit processing; and a grouping unit that groups each unit processing based on similarity between the each unit processing and each of representative unit processing selected by the selecting unit.Type: GrantFiled: October 31, 2006Date of Patent: January 31, 2012Assignee: Fujitsu LimitedInventors: Yukiko Seki, Lilian Harada, Ken Yokoyama
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Publication number: 20110231855Abstract: A priority control apparatus, includes a job operation information storage unit stores, as job operation information on a per job operation basis for a plurality of job operations, a process and an object used by the process with the process mapped to the object, each job operation being executed by a plurality of processes; a delay determiner determines a first job operation that is delayed from among the plurality of job operations; and a priority controller identifies a second job operation sharing an object used in the first job operation by referencing the job operation information storage unit, identifies a process, using an object not used in the first job operation, from among the processes executing the second job operation identified, and lowers a priority at which the identified process is to be executed.Type: ApplicationFiled: September 22, 2010Publication date: September 22, 2011Applicant: FUJITSU LIMITEDInventors: Noriaki MURATA, Yasuo Kubota, Naoki Akaboshi, Junichi Sakaguchi, Kazuhiro Ikemoto, Ken Yokoyama, Tamami Sugasaka, Taiji Sasage, Syogo Hayashi
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Publication number: 20110217052Abstract: An image forming apparatus uses the difference in time taken for each patch to reach a color sensor, which occurs upon reversing the conveyance direction of a printing material. Due to this difference in time, the temperature of the printing material in detection by the color sensor differs among the respective patches. The error of a colorimetric value due to thermochromism is reduced by placing a patch with a colorimetric value which has a low temperature dependence so as to be detected earlier, and a patch with a colorimetric value which has a high temperature dependence so as to be detected later.Type: ApplicationFiled: February 9, 2011Publication date: September 8, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Masatake Usui, Hiroshi Kita, Shun-ichi Ebihara, Ken Yokoyama