Patents by Inventor Kazuto Fukushima
Kazuto Fukushima 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: 11911891Abstract: An actuator system that picks up workpieces aims to shorten tact time and to reduce damages to workpieces. The actuator system includes an actuator that picks up a workpiece, an external force detection sensor that detects a physical quantity that is correlated with an external force that is applied to the workpiece, a head unit that is connected to the actuator and the external force detection sensor without a communication network, the head unit being configured to control the actuator based on a sensing result from the external force detection sensor when a pickup request signal that is a signal requesting pickup of the workpiece is received, and a control device that is connected to the head unit over the communication network, the control device being configured to transmit the pickup request signal to the head unit.Type: GrantFiled: October 17, 2019Date of Patent: February 27, 2024Assignee: THK CO., LTD.Inventors: Katsuya Fukushima, Masashi Ishii, Hiroki Niwa, Akira Suzuki, Kazuto Oga, Shogo Wakuta, Satoshi Hara, Tomofumi Mizuno, Shigeki Hayashi
-
Patent number: 9209919Abstract: According to an embodiment, the transmission processor of the master terminal includes a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator.Type: GrantFiled: October 18, 2013Date of Patent: December 8, 2015Assignee: Kabushiki Kaisha ToshibaInventors: Akinori Hirose, Akira Kawarada, Kazuto Fukushima, Hideaki Sugiura
-
Publication number: 20140050232Abstract: According to an embodiment, the transmission processor of the master terminal includes a sending/receiving processor which sends a synchronization request demanding packet to a particular slave terminal and sends a synchronization reply packet when receiving a synchronization request packet from the slave terminal that has received the synchronization request demanding packet, and a synchronization controller which calculates a synchronization band from the time of the receipt of the data packet and from time information added to the received data packet to determine a synchronization state and which adjusts a correction amount in accordance with the synchronization state and sends an internal timing correction command to the timing generator.Type: ApplicationFiled: October 18, 2013Publication date: February 20, 2014Applicant: Kabushiki Kaisha ToshibaInventors: Akinori Hirose, Akira Kawarada, Kazuto Fukushima, Hideaki Sugiura
-
Patent number: 8547201Abstract: According to one embodiment, when sending a transmission target main data 21, an authentication-tag generator unit 13 generates an authentication tag 23 by using a main data 21 and a key data 22 stored in a key-data storage unit 12. A transmitter/receiver unit 14 adds the authentication tag 23 to the main data 32 sends as a transmission data. When receiving the received data 24a, the transmitter/receiver unit 14 divides the received data into a main data 21a and an authentication tag 23a. The authentication-tag generator unit 13 generates an authentication tag 23b for comparison. A received-data authentication unit 15 determines whether or not those the received authentication tag 23a and the authentication tag for comparison 23b match with each other. A different key data is used every time upon the authentication-tag generation and use time of each key data during a set period is restricted.Type: GrantFiled: December 28, 2009Date of Patent: October 1, 2013Assignees: Kabushiki Kaisha Toshiba, Yokohama National UniversityInventors: Shigeki Katayama, Katsuhiko Sekiguchi, Kazuto Fukushima, Tsutomu Matsumoto
-
Patent number: 8396098Abstract: Provided is a high-precision and highly functional digital protective relay device and a data transmission device for a digital protective relay device, by enabling transmission of large amounts of system electrical quantity data. The data transmission device for a digital protective relay device, the transmission device comprising: an analog/digital conversion portion 6, which, after sampling a system electrical quantity signal acquired from an electric power system at m times the fundamental frequency f0 (m>12) thereof, performs conversion into n-bit digital data (n>12); a data processing portion 7, which converts m sampling data of n bits with frequency m·f0, obtained by the analog/digital conversion portion, into k sampling data with frequency k·f0 (k?m) at or below the former frequency; and a transmitting portion 8, which transmits k sampling data obtained by the data processing portion to another protective relay device in a prescribed transmission format.Type: GrantFiled: March 18, 2009Date of Patent: March 12, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Kazuto Fukushima, Hideaki Sugiura, Masamichi Saga
-
Publication number: 20120019355Abstract: According to one embodiment, when sending a transmission target main data 21, an authentication-tag generator unit 13 generates an authentication tag 23 by using a main data 21 and a key data 22 stored in a key-data storage unit 12. A transmitter/receiver unit 14 adds the authentication tag 23 to the main data 32 sends as a transmission data. When receiving the received data 24a, the transmitter/receiver unit 14 divides the received data into a main data 21a and an authentication tag 23a. The authentication-tag generator unit 13 generates an authentication tag 23b for comparison. A received-data authentication unit 15 determines whether or not those the received authentication tag 23a and the authentication tag for comparison 23b match with each other. A different key data is used every time upon the authentication-tag generation and use time of each key data during a set period is restricted.Type: ApplicationFiled: December 28, 2009Publication date: January 26, 2012Applicants: YOKOHAMA NATIONAL UNIVERSITY, KABUSHIKI KAISHA TOSHIBAInventors: Shigeki Katayama, Katsuhiko Sekiguchi, Kazuto Fukushima, Tsutomu Matsumoto
-
Publication number: 20110013676Abstract: Provided is a high-precision and highly functional digital protective relay device and a data transmission device for a digital protective relay device, by enabling transmission of large amounts of system electrical quantity data. The data transmission device for a digital protective relay device, the transmission device comprising: an analog/digital conversion portion 6, which, after sampling a system electrical quantity signal acquired from an electric power system at m times the fundamental frequency f0 (m>12) thereof, performs conversion into n-bit digital data (n>12); a data processing portion 7, which converts m sampling data of n bits with frequency m·f0, obtained by the analog/digital conversion portion, into k sampling data with frequency k·f0 (k?m) at or below the former frequency; and a transmitting portion 8, which transmits k sampling data obtained by the data processing portion to another protective relay device in a prescribed transmission format.Type: ApplicationFiled: March 18, 2009Publication date: January 20, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kazuto Fukushima, Hideaki Sugiura, Masamichi Saga