Patents by Inventor Takashi Saegusa

Takashi Saegusa 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).

  • Publication number: 20230323632
    Abstract: A work machine includes a body, a work implement attached to the body, and a controller that executes a transmission process of transmitting data to an external apparatus installed outside the body. The controller measures a speed of communication with the external apparatus, places a functional restriction on the transmission process when the speed of communication is lower than a predetermined required speed, reinforces the functional restriction on the transmission process as the speed of communication lowers, and reinforces the functional restriction on the transmission process when a state of the work machine is an operation state, as compared to a case where the state of the work machine is not the operation state.
    Type: Application
    Filed: March 16, 2022
    Publication date: October 12, 2023
    Inventors: Takashi SAEGUSA, Yuuki NAGAOKA, Makoto SAEN, Kazuhiro SHIBAMORI
  • Publication number: 20230315673
    Abstract: A distributed control system includes a tree topology network or a daisy-chain network including a communication parent station, communication child stations, and a plurality of communication paths among the communication parent station and the communication child stations, in which the communication parent station and the communication child stations include a scheduling unit that controls a transfer cycle that is temporal intervals of data transfer. The scheduling unit sets the transfer cycle that is the fastest out of a plurality of the data as a reference cycle, counts the number of times each time the reference cycle elapses, and imparts a value of the number of times to the reference cycle as a cycle number. When the cycle number reaches an optional number, the number of times is returned to an initial value, which makes one cycle of transfer control, and the transfer control is repeatedly executed.
    Type: Application
    Filed: June 11, 2020
    Publication date: October 5, 2023
    Applicant: Hitachi High-Tech Corporation
    Inventors: Kazushi YAMASHINA, Takashi SAEGUSA, Yoshiro GUNJI, Tetsuji OHSAWA, Yutaka KASAI, Junichi KITAMURA, Naoya ISHIGAKI, Shusaku MAEDA, Yoshikuni YOKOSE
  • Publication number: 20230104165
    Abstract: Provided is a module system for a robot, said module system being suitable for an autonomous robot that switches between onsite operations.
    Type: Application
    Filed: December 25, 2020
    Publication date: April 6, 2023
    Inventors: Kazushi YAMASHINA, Terunobu FUNATSU, Takashi SAEGUSA
  • Publication number: 20220413488
    Abstract: A controller of a work machine includes: a service request generation unit that generates and transfers information for requesting a remote service; a service execution condition management unit that confirms and manages the condition for executing the remote service; and an operating mode management unit that manages the operating mode and the operation status of the work machine. The service request generation unit generates service request information containing function types of a plurality of remote services, the operating mode of the vehicle, and the communication performance of the communication network, and transfers it to the data center. For each function type included in the service request information, the service execution condition management unit outputs service execution information containing the execution possibility, the condition for operating mode, and the condition for communication performance.
    Type: Application
    Filed: March 11, 2021
    Publication date: December 29, 2022
    Inventors: Takashi SAEGUSA, Yuuki NAGAOKA, Takafumi MORIMOTO, Yutaka WATANABE
  • Patent number: 11343119
    Abstract: In the present invention, device information is collected while real-time performance and high-speed performance of control-related normal communication are maintained. The distributed control system has: a central processing device; a central communication device; multiple terminal communication devices each having at least one controlled device connected thereto; an information storage device; and a network having a tree structure comprising multiple communication paths between the central communication device and the terminal communication devices, between the terminal communication devices, and between the terminal communication devices and the information storage device.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: May 24, 2022
    Assignee: Hitachi High-Tech Corporation
    Inventors: Kazushi Yamashina, Terunobu Funatsu, Takashi Saegusa, Masahiro Ohashi, Yoshiro Gunji, Yuuichi Hagino, Yutaka Kasai, Tsukasa Sugawara, Junichi Kitamura
  • Publication number: 20210111924
    Abstract: In the present invention, device information is collected while real-time performance and high-speed performance of control-related normal communication are maintained. The distributed control system has: a central processing device; a central communication device; multiple terminal communication devices each having at least one controlled device connected thereto; an information storage device; and a network having a tree structure comprising multiple communication paths between the central communication device and the terminal communication devices, between the terminal communication devices, and between the terminal communication devices and the information storage device.
    Type: Application
    Filed: January 15, 2019
    Publication date: April 15, 2021
    Inventors: Kazushi YAMASHINA, Terunobu FUNATSU, Takashi SAEGUSA, Masahiro OHASHI, Yoshiro GUNJI, Yuuichi HAGINO, Yutaka KASAI, Tsukasa SUGAWARA, Junichi KITAMURA
  • Patent number: 10107355
    Abstract: A damping device and a design method provide an active damping for a device in which vibration is to be reduced. The damping device includes vibration detection means for detecting a vibration of the object; vibration generation means for generating a distortion on a portion of the object; control means for controlling the vibration generation means by a signal from the vibration detection means; and signal input and output means for transferring a signal with the control means. A driving force generation signal is received from outside through the signal input and output means, the driving force corresponding to the driving force generation signal is generated by the control means, the selected vibration generation means is driven by the driving force, and vibration state information obtained from the selected vibration detection means is output from the control means to the outside through the signal input and output means.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: October 23, 2018
    Assignee: HITACHI LTD.
    Inventors: Toshihiro Arisaka, Takashi Saegusa, Daisuke Matsuka
  • Patent number: 10027747
    Abstract: A terminal communication apparatus has a terminal communication control portion rendering an immediate communication control portion sequentially transmitting serial data to another terminal communication apparatus bitwise when receiving a packet as bitwise serial data and a normal communication control portion performing processing on the packet after accumulating the serial data until the serial data reaches a packet length when receiving the bitwise serial data switchable, performing processing with the immediate communication control portion in a case of receiving a time adjustment packet containing time adjustment data posting a timing of synchronization in the other terminal communication apparatus and performing processing with the normal communication control portion in a case of receiving a packet other than the time adjustment packet. Thus, synchronization of control object devices can be enabled without previously investigating communication delay times.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: July 17, 2018
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Takashi Saegusa, Ikuo Takemura, Hideyuki Kamasuka, Masahiro Koyama, Terunobu Funatsu
  • Patent number: 9947361
    Abstract: Provided is a vibration control device mounted on a structure body of a target where vibration should be damped, including: a vibration detection unit that detects vibration of a portion of the target; a vibration generation unit that generates strain in a portion of the target; and a control unit that generates a control signal to determine drive force of the vibration generation unit based on a signal from the vibration detection unit. In the vibration control device, strain energy distribution of the target is measured or calculated, and setting positions of the vibration detection unit and the vibration generation unit are determined based on an optimization method within a range in which strain energy changes rapidly.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: April 17, 2018
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiro Arisaka, Takashi Saegusa, Itsuro Kajiwara
  • Patent number: 9841739
    Abstract: A motion controller device and a communication method for the motion controller device are provided to reduce the large number of man-hours that are required for making communication settings and wiring design in large-scale systems. The motion controller device and communication method improve the degree of freedom for communication line connections by switching the two transmission paths on the transmitting and receiving sides of the communication ports contained within a central communication device and a terminal communication devices for full duplex communications. The motion controller device and communication also ensure the response performance required in the devices being controlled by way of the terminal communication device that autonomously and dynamically switches the communication paths according to the volume of communication data on the communication line along this type of network.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: December 12, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Saegusa, Masahiro Koyama, Terunobu Funatsu
  • Patent number: 9843506
    Abstract: In a distributed control system including a central communication device, terminal communication devices to which target devices to be controlled are connected, and a network including multiple communication paths connecting the central communication device and terminal communication devices, each terminal communication device includes a calculation input/output performance storage unit storing input/output performance of a calculation unit for controlling the target devices to be controlled and a control input/output performance storage unit storing the performance of the input/output control units of the target devices to be controlled, and the central communication device collects input/output performance information previously stored in these storage units, determines communication paths of the terminal communication units and a packet division method in such a manner that an amount of a communication data of a network and response performance requested of the distributed control system are satisfied, on
    Type: Grant
    Filed: March 21, 2013
    Date of Patent: December 12, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Saegusa, Terunobu Funatsu, Toyokazu Takagi, Tomohiro Inoue
  • Patent number: 9835938
    Abstract: A projector includes an adjustment mechanism adjusting a light axis of the optical member. The adjustment mechanism includes a first member, a second member attached to be movable in a first direction orthogonal to the light axis of the optical member with respect to the first member, a third member holding the optical member and attached to be rotatable around a rotation center axis parallel to the light axis with respect to the second member, a first adjustment portion moving the second member in the first direction with respect to the first member, and a second adjustment portion rotating the third member around the rotation center axis with respect to the second member, and an operation portion of the first adjustment portion and an operation portion of the second adjustment portion are placed at the same side.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: December 5, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Saegusa, Masato Kadotani, Toshizo Nishi
  • Patent number: 9838466
    Abstract: A distributed control system and a control method for the distributed control system are provided that reduce adjustment and setup steps required when the system are applied to a control using sensors and actuators. The distributed control system includes a central communication unit and terminal communication units, the central communication unit and the terminal communication units connected to each other through a network. Communication control setup is automatically performed for each of the terminal communication units when control is exercised by using sensors and actuators connected to the terminal communication units based on each transmission characteristic of the time when a physical quantity generated by driving each of the actuators propagates to each of the sensors and on the setup of required performance of control.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: December 5, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Saegusa, Toshihiro Arisaka
  • Patent number: 9821821
    Abstract: A measuring device is applied to an active damping system, the active damping system including a damper having a plurality of sensors and a plurality of actuators, the damper being arranged on an object to be subjected to damping. The measuring device includes: a transmission characteristic storage unit configured to store a plurality of transmission characteristics calculated from driving signals and vibration state signals; a damping performance setting unit configured to set damping performance including the amount of vibration reduction required of the active damping system and a frequency of vibration; and a damper configuration calculator configured to calculate how many the number of the sensors and actuators for the damper is increased or decreased on the basis of the transmission characteristics and the damping performance, with the increase or decrease being necessary in order that the damping performance set in the damping performance setting unit is satisfied.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: November 21, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Saegusa, Toshihiro Arisaka, Hiroki Takahashi
  • Publication number: 20170227838
    Abstract: A projector includes an adjustment mechanism adjusting a light axis of the optical member. The adjustment mechanism includes a first member, a second member attached to be movable in a first direction orthogonal to the light axis of the optical member with respect to the first member, a third member holding the optical member and attached to be rotatable around a rotation center axis parallel to the light axis with respect to the second member, a first adjustment portion moving the second member in the first direction with respect to the first member, and a second adjustment portion rotating the third member around the rotation center axis with respect to the second member, and an operation portion of the first adjustment portion and an operation portion of the second adjustment portion are placed at the same side.
    Type: Application
    Filed: January 25, 2017
    Publication date: August 10, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi SAEGUSA, Masato KADOTANI, Toshizo NISHI
  • Publication number: 20170094200
    Abstract: An image processing apparatus performs fast image transfer of an image sensor and can easily satisfy required performance of image transfer. The image processing apparatus includes a sensor and a processing unit, the sensor obtains a first image including a recognition target at a first time, obtains a second image including the recognition target at a second time later than the first time, and obtains a third image including the recognition target at a third time later than the second time, and the processing unit determines first setting information of the sensor from the first image and the second image so as to satisfy a predetermined condition when the third image is obtained. Furthermore, the first setting information includes a dimension of the third image and a frame rate at the time of obtaining the third image.
    Type: Application
    Filed: May 21, 2014
    Publication date: March 30, 2017
    Applicant: HITACHI, LTD.
    Inventors: Takashi SAEGUSA, Kiyoto ITO, Toyokazu TAKAGI, Tomohiro INOUE
  • Publication number: 20170045109
    Abstract: A damping device and a design method provide an active damping for a device in which vibration is to be reduced. The damping device includes vibration detection means for detecting a vibration of the object; vibration generation means for generating a distortion on a portion of the object; control means for controlling the vibration generation means by a signal from the vibration detection means; and signal input and output means for transferring a signal with the control means. A driving force generation signal is received from outside through the signal input and output means, the driving force corresponding to the driving force generation signal is generated by the control means, the selected vibration generation means is driven by the driving force, and vibration state information obtained from the selected vibration detection means is output from the control means to the outside through the signal input and output means.
    Type: Application
    Filed: April 25, 2014
    Publication date: February 16, 2017
    Applicant: HITACHI, LTD.
    Inventors: Toshihiro ARISAKA, Takashi SAEGUSA, Daisuke MATSUKA
  • Patent number: 9459617
    Abstract: A motion controller is provided which improves system responsiveness without having to raise the arithmetic capacity of a master controller or to boost the communication speed of a network. The master controller 1 uses a program analysis unit 1g to separate, from a control program designating a tolerable delay time for operating control target apparatuses, a slave use program to be executed by a slave controller in a manner not to exceed the tolerable delay time, and to create slave-to-slave communication setting information needed by the slave controller to execute the slave use program. Through slave-to-slave communication, the slave controller 2 acquires input/output information from another slave controller. The slave controller 2 also uses a slave use program execution unit 2f to execute its own slave use program.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: October 4, 2016
    Assignee: HITACHI, LTD.
    Inventors: Masahiro Koyama, Takashi Saegusa, Terunobu Funatsu, Yosuke Horie
  • Publication number: 20160275984
    Abstract: Provided is a vibration control device mounted on a structure body of a target where vibration should be damped, including: a vibration detection unit that detects vibration of a portion of the target; a vibration generation unit that generates strain in a portion of the target; and a control unit that generates a control signal to determine drive force of the vibration generation unit based on a signal from the vibration detection unit. In the vibration control device, strain energy distribution of the target is measured or calculated, and setting positions of the vibration detection unit and the vibration generation unit are determined based on an optimization method within a range in which strain energy changes rapidly.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 22, 2016
    Inventors: Toshihiro ARISAKA, Takashi SAEGUSA, Itsuro KAJIWARA
  • Patent number: 9325572
    Abstract: A network I/O system includes a central communication unit having a communication port and a plurality of terminal communication units each having an upstream communication port and a plurality of downstream ports wherein the central communication unit transmits, to the terminal communication units, routing data of the central communication unit to the terminal communication units for setting identification numbers in the terminal communication units and data of the identification number of the terminal communication units, the terminal communication units refer to the data to transmit to the downstream communication port and set the identification number in a targeted terminal communication unit, and a communication port number of the downstream communication port is appended to routing recognition data to be transmitted from the terminal communication units to the central communication unit at a time of passing through the terminal communication units, thereby recognizing a network configuration.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: April 26, 2016
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Takashi Saegusa, Terunobu Funatsu, Manabu Okamoto, Ikuo Takemura, Masaharu Yoshida, Hideyuki Kamasuka