Patents by Inventor Toshihiro Kujirai

Toshihiro Kujirai 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).

  • Patent number: 11487972
    Abstract: Provided is a reward function generation method for calculating a reward in reinforcement learning, the method being executed by a computer, and the method includes accepting input of an instruction to generate a reward function including a plurality of setting data that is information regarding a key performance indicator, generating one partial reward function for one of the setting data, generating a linear combination of a plurality of the partial reward functions as the reward function, and outputting information regarding the reward function generated to the computer that executes the reinforcement learning, by the computer.
    Type: Grant
    Filed: August 20, 2019
    Date of Patent: November 1, 2022
    Assignee: HITACHI, LTD.
    Inventors: Masayoshi Mase, Yaemi Teramoto, Toshihiro Kujirai
  • Patent number: 11170332
    Abstract: A data analysis apparatus generates M (M is an integer of 3 or greater) groups each including data regarding a plurality of units from data where first KPIs and K (K is an integer of 2 or greater) explanatory variables are given by 1:1, generates a second KPI indicating the state of the group based on the values of a plurality of first KPIs included in the group, and selects a feature for the first KPIs based on a correlation analysis between the second KPI of each group and the feature of each group calculated based on the explanatory variables.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 9, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Hikaru Koyama, Toshio Okochi, Toshihiro Kujirai
  • Publication number: 20200333775
    Abstract: An object of the present invention is to reduce an error between an actual machine and a simulation by removing the influence of overlearning of an adjustment by a mathematically-described function, and to optimize automatic operation control of the machine. An automatic operation control system for controlling an automatic operation of a machine sets a first model showing a relation between a control signal string input to the machine on the basis of a mathematically-described function and data output from the machine controlled in accordance with the control signal string. In a learning process including learning the automatic operation control of the machine, the system executes learning using the first model until a first condition is satisfied.
    Type: Application
    Filed: April 10, 2020
    Publication date: October 22, 2020
    Inventors: Morio MATSUMOTO, Fumiya KUDO, Toshihiro KUJIRAI
  • Publication number: 20200074236
    Abstract: Provided is a reward function generation method for calculating a reward in reinforcement learning, the method being executed by a computer, and the method includes accepting input of an instruction to generate a reward function including a plurality of setting data that is information regarding a key performance indicator, generating one partial reward function for one of the setting data, generating a linear combination of a plurality of the partial reward functions as the reward function, and outputting information regarding the reward function generated to the computer that executes the reinforcement learning, by the computer.
    Type: Application
    Filed: August 20, 2019
    Publication date: March 5, 2020
    Applicant: HITACHI, LTD.
    Inventors: Masayoshi Mase, Yaemi Teramoto, Toshihiro Kujirai
  • Publication number: 20190164101
    Abstract: A data analysis apparatus generates M (M is an integer of 3 or greater) groups each including data regarding a plurality of units from data where first KPIs and K (K is an integer of 2 or greater) explanatory variables are given by 1:1, generates a second KPI indicating the state of the group based on the values of a plurality of first KPIs included in the group, and selects a feature for the first KPIs based on a correlation analysis between the second KPI of each group and the feature of each group calculated based on the explanatory variables.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 30, 2019
    Inventors: Hikaru KOYAMA, Toshio OKOCHI, Toshihiro KUJIRAI
  • Patent number: 9057619
    Abstract: An optimal path search system, which optimizes a travel path of a moving object, comprising: a path information database; and a path search unit that searches for an optimal path that exhibits a minimum travel cost borne by the moving object, from among travel paths of the moving object, wherein: the path search unit is configured to: determine destination points on the path network; search for at least one nearest node to each of destination points, search for a second travel path along which the moving object travels by passing through the at least one nearest node and all of the at least one destination point, determine the second travel path for which a travel cost is minimum; and search for the travel paths followed by using each of a plurality of moving means, respectively, in a case where the moving object travels along the optimal path.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: June 16, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiro Kujirai, Reiko Kubo, Masahiro Kameda, Yoriko Kazama, Takashi Watanabe
  • Patent number: 8880345
    Abstract: Provided is a route generation device capable of generating an appropriate route. A route generation system of one embodiment of the present invention includes: analysis sections that analyze aerial image data to identify the land state of an area included in an aerial image; a storage section that stores traffic cost information associating a traffic-cost coefficient indicating traffic difficulty with the land state; a route searching section that calculates traffic costs of a plurality of routes from a start point to an end point by referring to the analysis results of the analysis sections and the traffic cost information and that determines a route candidate to be used from the start point to the end point based on the calculation results.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: November 4, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Yoriko Kazama, Toshihiro Kujirai, Takashi Watanabe
  • Publication number: 20130013204
    Abstract: Provided is a route generation device capable of generating an appropriate route. A route generation system of one embodiment of the present invention includes: analysis sections that analyze aerial image data to identify the land state of an area included in an aerial image; a storage section that stores traffic cost information associating a traffic-cost coefficient indicating traffic difficulty with the land state; a route searching section that calculates traffic costs of a plurality of routes from a start point to an end point by referring to the analysis results of the analysis sections and the traffic cost information and that determines a route candidate to be used from the start point to the end point based on the calculation results.
    Type: Application
    Filed: July 2, 2012
    Publication date: January 10, 2013
    Inventors: Yoriko KAZAMA, Toshihiro Kujirai, Takashi Watanabe
  • Publication number: 20120209512
    Abstract: An optimal path search system, which optimizes a travel path of a moving object, comprising: a path information database; and a path search unit that searches for an optimal path that exhibits a minimum travel cost borne by the moving object, from among travel paths of the moving object, wherein: the path search unit is configured to: determine destination points on the path network; search for at least one nearest node to each of destination points, search for a second travel path along which the moving object travels by passing through the at least one nearest node and all of the at least one destination point, determine the second travel path for which a travel cost is minimum; and search for the travel paths followed by using each of a plurality of moving means, respectively, in a case where the moving object travels along the optimal path.
    Type: Application
    Filed: January 30, 2012
    Publication date: August 16, 2012
    Applicant: HITACHI, LTD.
    Inventors: Toshihiro KUJIRAI, Reiko KUBO, Masahiro KAMEDA, Yoriko KAZAMA, Takashi WATANABE
  • Patent number: 7809502
    Abstract: In an information providing service that utilizes a car navigation system or the like, ensuring safety while viewing content is a matter of great concern. A vehicle-mounted onboard content providing apparatus for providing content to a user of the vehicle, comprising a current location acquisition unit for acquiring information about the current location, an instruction input unit whereby information about the destination and instructions for selecting the content to be delivered are inputted, a control unit for editing the content retrieved based on the instructions, and an output unit for outputting the edited content, wherein the control unit determines, on the basis of attribute information assigned to the route included in the results of retrieving the route from the current location to the destination, sections in which content is outputted or not outputted on the route, and edits the content on the basis of the result of this determination.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: October 5, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyuki Iizuka, Toshihiro Kujirai
  • Patent number: 7587055
    Abstract: Collecting the sound while rotating at least one or more microphone around a rotational axis, the filter processing is carried out in accordance with the positional information of the microphone at each point.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: September 8, 2009
    Assignee: Hitachi, Ltd
    Inventors: Toshihiro Kujirai, Masahito Togami, Yasunari Obuchi
  • Patent number: 7505910
    Abstract: Arrangements, including a method of speech command management that changes a content of active speech commands and inactive speech commands, based on each application status in a terminal. When plural applications are active and when a user is interacting with one of the active applications, the provided speech command management makes the content of recognizable speech commands to be limited to local commands of an interacting application, and also global commands of other background applications. Also, the provided management arrangement makes the content of recognizable global speech commands based on each application status. This management arrangement reduces the number of recognizable speech commands, and thus prevents misrecognitions inducted by using many speech commands.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: March 17, 2009
    Assignee: Hitachi, Ltd.
    Inventor: Toshihiro Kujirai
  • Publication number: 20080154591
    Abstract: Provided are a voice recognition system for making a response based on an input of a voice uttered by a user including: an audio input unit for converting the uttered voice into voice data; a voice recognizing unit for recognizing a combination of terms constituting the voice data and calculating reliability of recognition of each of the terms; a response generating unit for generating a voice response; and an audio output unit for presenting the user with information using the voice response. The response generating unit: generates synthesis audio for a term whose calculated reliability satisfies a predetermined condition; extracts from the voice data a part corresponding to a term whose calculated reliability does not satisfy the predetermined condition; and generates the voice response based on at least one of the synthesis audio, the extracted voice data and a combination of the synthesis audio and the extracted voice data.
    Type: Application
    Filed: February 3, 2006
    Publication date: June 26, 2008
    Inventors: Toshihiro Kujirai, Takahisa Tomoda, Minoru Tomikashi, Takeshi Oono
  • Publication number: 20080040677
    Abstract: A HMI (Human Machine Interface) development support apparatus that has at least a CPU, memory devices, a display unit and an input device and supports development of a display screen regarding a HMI of an information processing system includes a layout editing means that creates a layout of the display screen regarding the HMI of the information processing system in such a manner that the layout editing means lays out at least either a graphic component having graphic data or an image component having image data based on operational information input from the input device; an image editing means that creates an image for either the graphical component or the image component based on the operational information input from the input device; and data storage means that stores layout data of the layout created by the layout editing means, component data of components included in the layout and image data of the components.
    Type: Application
    Filed: August 8, 2007
    Publication date: February 14, 2008
    Applicants: Hitachi, Ltd., Clarion Co., Ltd.
    Inventors: Yoshitaka Atarashi, Toshihiro Kujirai, Keiji Doi, Naohiko Fukaya
  • Publication number: 20080034322
    Abstract: An image design support tool for designing a display image of an information terminal, which includes: storage means for storing a plurality of display images and an image group to which the display images belong; first setting means for setting a first display rule on each image group for displaying an interruption screen on an interruption event occurring; second setting means for setting a second display rule on each display image for the interruption screen on an interruption event occurring as an exception of the first display rule; and guidance means for generating and outputting guidance information on an image group to which the display image, to which the second display rule is applied, is transferred by using a difference between the first display rule and the second display rule.
    Type: Application
    Filed: August 2, 2007
    Publication date: February 7, 2008
    Applicants: Hitachi, Ltd., Clarion Co., Ltd.
    Inventors: Toshihiro Kujirai, Naohiko Fukaya, Yoshitaka Atarashi, Keiji Doi
  • Patent number: 7076362
    Abstract: The present invention is characterized in that the car navigation system for, at the time of desiring map information, traffic information, and other required information in a car, inquiring an information distribution service provider for distribution the information is composed of a moving terminal device which can be operated by inputting and outputting voice, a communication device, an audio interactive server which can input and output voice and data, is connected to an external device and the Internet on the basis of audio interactions by the voice recognition process and voice synthesis process, and executes information transfer, and one or a plurality of information distribution service providers connected to the Internet for distributing information such as map information and traffic information.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: July 11, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Ohtsuji, Soshiro Kuzunuki, Mariko Okude, Tadashi Kamiwaki, Michio Morioka, Akio Amano, Toshihiro Kujirai, Makoto Shioya, Manabu Niie
  • Publication number: 20060045289
    Abstract: Collecting the sound while rotating at least one or more microphone around a rotational axis, the filter processing is carried out in accordance with the positional information of the microphone at each point.
    Type: Application
    Filed: March 7, 2005
    Publication date: March 2, 2006
    Inventors: Toshihiro Kujirai, Masahito Togami, Yasunari Obuchi
  • Publication number: 20060004577
    Abstract: In the text-to-speech synthesis technique for synthesizing speech from text, this invention enables a terminal device with relatively small computing power to perform speech synthesis based on optimal unit selection. The text-to-speech synthesis procedure of the present invention involves content generation and output; that is, a secondary content including the results of the optimal unit selection process is output. By virtue of the secondary content, a high load process of selecting optimal units and a light load process of synthesizing speech waveforms can be performed separately. The optimal unit selection process is performed at a server and information for the units to be retrieved from a corpus is sent to the terminal as data for speech synthesis.
    Type: Application
    Filed: January 7, 2005
    Publication date: January 5, 2006
    Inventors: Nobuo Nukaga, Toshihiro Kujirai
  • Publication number: 20050201376
    Abstract: In an information providing service that utilizes a car navigation system or the like, ensuring safety while viewing content is a matter of great concern. A vehicle-mounted onboard content providing apparatus for providing content to an user of the vehicle, comprising a current location acquisition unit for acquiring information about the current location, an instruction input unit whereby information about the destination and instructions for selecting the content to be delivered are inputted, a control unit for editing the content retrieved based on the instructions, and an output unit for outputting the edited content, wherein the control unit determines, on the basis of attribute information assigned to the route included in the results of retrieving the route from the current location to the destination, sections in which content is outputted or not outputted on the route, and edits the content on the basis of the results of this determination.
    Type: Application
    Filed: December 23, 2004
    Publication date: September 15, 2005
    Inventors: Tomoyuki Iizuka, Toshihiro Kujirai
  • Publication number: 20040260562
    Abstract: Arrangement including terminal and method for providing a plurality of speech interaction applications.
    Type: Application
    Filed: January 29, 2004
    Publication date: December 23, 2004
    Inventor: Toshihiro Kujirai