Patents by Inventor Shigeru Ishimoto

Shigeru Ishimoto 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: 11287287
    Abstract: Provided is a highly reliable abnormal state determination system that can prevent erroneous determination even in a case where a determination condition for determining an abnormal state in measurement using a sensor cannot be changed. Provided is an abnormal state determination system 100 including: an abnormal state determination unit 40 configured to determine an abnormal state by using a detection signal based on a signal output from a sensor 10; and a specific processing unit 50 configured to, when a predetermined condition is satisfied, perform control processing for adjusting strength of the detection signal before the detection signal is input to the abnormal state determination unit 40.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: March 29, 2022
    Assignee: DMG MORI Co., Ltd.
    Inventors: Shigeru Ishimoto, Koichi Hihara
  • Publication number: 20200132505
    Abstract: Data is utilized more efficiently and effectively. A position detection device includes a plurality of scales that each record absolute data embedded with a scale ID for identifying a scale, a detector that detects the absolute data from each of the plurality of scales, and an extractor that extracts, from the detected absolute data, the scale ID and position data representing the position of the scale.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 30, 2020
    Inventors: Shigeru Ishimoto, Kayoko Taniguchi, Chihiro Murayama
  • Publication number: 20200049531
    Abstract: Provided is a highly reliable abnormal state determination system that can prevent erroneous determination even in a case where a determination condition for determining an abnormal state in measurement using a sensor cannot be changed. Provided is an abnormal state determination system 100 including: an abnormal state determination unit 40 configured to determine an abnormal state by using a detection signal based on a signal output from a sensor 10; and a specific processing unit 50 configured to, when a predetermined condition is satisfied, perform control processing for adjusting strength of the detection signal before the detection signal is input to the abnormal state determination unit 40.
    Type: Application
    Filed: July 23, 2019
    Publication date: February 13, 2020
    Inventors: Shigeru Ishimoto, Koichi Hihara
  • Patent number: 10048093
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of ½n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(?+?+ 1/7+ . . . 1/(2m+1)).
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: August 14, 2018
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto, Mitsugu Yoshihiro
  • Patent number: 10024691
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of ½n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(?+?+ 1/7+ . . . 1/(2m+1)).
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: July 17, 2018
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto, Mitsugu Yoshihiro
  • Publication number: 20170307409
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(1/3+1/5+1/7+ . . . 1/(2m+1)).
    Type: Application
    Filed: May 19, 2017
    Publication date: October 26, 2017
    Applicant: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO, Mitsugu YOSHIHIRO
  • Publication number: 20170284830
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of ½n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(?+?+ 1/7+ . . . 1/(2m+1)).
    Type: Application
    Filed: May 19, 2017
    Publication date: October 5, 2017
    Applicant: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO, Mitsugu YOSHIHIRO
  • Patent number: 9733317
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(1/3+1/5+1/7+ . . . 1/(2m+1)).
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: August 15, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto, Mitsugu Yoshihiro
  • Patent number: 9719805
    Abstract: A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 1, 2017
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Yusuke Takei, Shigeru Ishimoto
  • Patent number: 9322677
    Abstract: A position detecting device that includes a recording medium provided with a first recording track in which a non-repetitive signal composed of binary information is recorded and a second recording track in which a signal for specifying a reading section within a section of information of 1 unit for the non-repetitive signal and information reading means that includes a first detection head and a second detection head and for reading each 1 unit information of the non-repetitive signal from the first recording track by using the first detection head in the reading section within a section of information of 1 unit for the non-repetitive signal specified based upon the signal recorded in the second recording track by the second detection head.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: April 26, 2016
    Assignee: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Daisuke Uchiyama, Shigeru Ishimoto, Yusuke Takei
  • Publication number: 20150354987
    Abstract: A highly accurate position detection is performed by the use of a magneto-resistance effect element such as a TMR element. At least two magnetic detecting elements 21-1 and 21-2 are provided to detect leakage magnetism from a scale 11 having a magnetic signal magnetically recorded thereon, and to output a recording signal of a position where the leakage magnetism is detected. The at least two magnetic detecting elements 21-1 and 21-2 are disposed side by side in a direction y perpendicular to a direction x of scanning the scale 11 and also disposed at positions approximately equidistant from a magnetic signal recording surface of the scale 11.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 10, 2015
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO
  • Publication number: 20150253162
    Abstract: A magnetism detecting element detects a leakage magnetism from a scale, on which a magnetic signal with a constant period is recorded, and a relative position between the scale and the magnetism detecting element is detected. The magnetism detecting elements are arranged, along a detection direction of the magnetic signal relative to the scale, in a pattern with a pitch of 1/2n (n is a prime number of 3 or more) of a wavelength ?? of a signal output by the element. Furthermore, as the pattern for cancelling m odd-order harmonics, the m-th power of 2 magnetism detecting elements are arranged within a range in which a pitch distance L of the magnetism detecting element farthest in the detection direction is expressed by L=(??/2)×(1/3+1/5+1/7+ . . . 1/(2m+1)).
    Type: Application
    Filed: March 6, 2015
    Publication date: September 10, 2015
    Inventors: Masaaki KUSUMI, Yusuke TAKEI, Shigeru ISHIMOTO, Mitsugu YOSHIHIRO
  • Publication number: 20150058655
    Abstract: According to one embodiment, there is provided an interface circuit including a plurality of units. Each of the plurality of units includes a clock interface, a data interface, and a selector. The clock interface receives a clock and transfers the clock. The data interface receives data and transfers the data. The selector selects a clock and supplies the selected clock to the data interface such that the data interface transfers the data in synchronization with the selected clock.
    Type: Application
    Filed: March 11, 2014
    Publication date: February 26, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Shigeru Ishimoto, Motoaki Koyama, Seiichiro Saito, Hiroyuki Michie, Kazuya Kimura
  • Publication number: 20140097833
    Abstract: To provide a position detecting device capable of easily obtaining a stable recording state without using “absence of record” upon reproducing a binary signal. The position detecting device is provided with a scale unit 10 having an absolute track 11 in which non-repetitive signals composed of binary information are recorded and an incremental track 12 in which a signal for specifying a reading section within a section of information of 1 unit for the non-repetitive signal is recorded; and within a reading section in a section of information of 1 unit for the repetitive signal specified based upon the signal recorded in the incremental track 12, each 1 unit information of the non-repetitive signal is read from the absolute track 11 by an absolute pattern detection head 21. In the absolute track 11, each 1 unit information is recorded in an effective section longer than the reading section within the section of information of 1 unit for the non-repetitive signal.
    Type: Application
    Filed: October 3, 2013
    Publication date: April 10, 2014
    Applicant: DMG MORI SEIKI CO., LTD.
    Inventors: Masaaki Kusumi, Daisuke Uchiyama, Shigeru Ishimoto, Yusuke Takei
  • Patent number: 6772101
    Abstract: Angle data ranging from 0° to 360° obtained by performing polar conversion with respect to a periodic signal are input to a low pass filter having: a phase accumulator for outputting smoothed angle data; a phase comparator for obtaining a phase error between the angle data and the smoothed angle data; a first amplifier for amplifying the phase error; a second amplifier for further amplifying the phase error; an integrator for integrating the phase error PE amplified by the second amplifier to obtain a velocity error; and an adder for adding the phase error amplified by the first amplifier and the velocity error to determine a control voltage. The phase accumulator controls the frequency of the smoothed angle data so that the phase error is zero based on the control voltage to remove a high frequency component in the angle data.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: August 3, 2004
    Assignee: Sony Precision Technology Inc.
    Inventors: Masato Tanaka, Shigeru Ishimoto, Toyohiko Matsuda, Katsumi Kitamura
  • Patent number: 6772088
    Abstract: A position transducer capable of accurately detecting an n-bit code by a small number of ABS detectors when there is provided one ABS track. In an ABS head, the ABS detectors 101 to 10n+m are disposed for a distance &lgr;1 between the first ABS detector 101 and (n+m)th ABS detector 10n+m to satisfy a requirement (n−1)&lgr;+2&dgr;<&lgr;1 and a distance &lgr;2 between two successive ones of the ABS detectors to satisfy a requirement 2&dgr;<&lgr;2<&lgr;−2&dgr;, so that at least one ABS detector is opposite to a stable area T in each of micro-areas at n successive bits.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: August 3, 2004
    Assignee: Sony Precision Technology Inc.
    Inventors: Yasuo Nekado, Michio Okano, Shigeru Ishimoto, Mitsuru Ohno, Masaaki Kusumi
  • Patent number: 6693565
    Abstract: There is provided a position transducer (1) capable of accurately detecting an n-bit code by n ABS detectors from one ABS track. When an INC value is under j or over k, signal output from each of the ABS detectors is binarized based on a threshold h and also based on a threshold l. First, an ABS value decider (24) decides that a bit is “H” when it has been judged as being “H” on the basis of both the thresholds and a bit is “L” when it is has been judged as being “L” on the basis of both the thresholds. When the INC value is under j, a lower bit has the same code as that of the deiced bit. So, the ABS value decider (24) decides that the lower bit is “H” or “L”. On the other hand, when the INC value is over k, an upper bit has the same code as the decided code. Thus, the ABS value decider (24) decides that the upper bit is “H” or “L”.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: February 17, 2004
    Assignee: Sony Precision Technology Inc.
    Inventors: Masaaki Kusumi, Michio Okano, Shigeru Ishimoto, Mitsuru Ohno, Yasuo Nekado
  • Publication number: 20030187609
    Abstract: There is provided a position transducer (1) capable of accurately detecting an n-bit code by n ABS detectors from one ABS track. When an INC value is under j or over k, signal output from each of the ABS detectors is binarized based on a threshlold h and also based on a threshold l. First, an ABS value decider (24) decides that a bit is “H” when it has been judged as being “H” on the basis of both the thresholds and a bit is “L” when it is has been judged as being “L” on the basis of both the thresholds. When the INC value is under j, a lower bit has the same code as that of the deiced bit. So, the ABS value decider (24) decides that the lower bit is “H” or “L”. On the other hand, when the INC value is over k, an upper bit has the same code as the decided code. Thus, the ABS value decider (24) decides that the upper bit is “H” or “L”.
    Type: Application
    Filed: February 21, 2003
    Publication date: October 2, 2003
    Inventors: Masaaki Kusumi, Michio Okano, Shigeru Ishimoto, Mitsuru Ohno, Yasuo Nekado
  • Publication number: 20030187608
    Abstract: A position transducer capable of accurately detecting an n-bit code by a small number of ABS detectors when there is provided one ABS track. In an ABS head, the ABS detectors 101 to 10n+m are disposed for a distance &lgr;1 between the first ABS detector 101 and (n+m)th ABS detector 10n+m to satisfy a requirement (n−1)&lgr;+2&dgr;<&lgr;1 and a distance &lgr;2 between two successive ones of the ABS detectors to satisfy a requirement 2&dgr;<&lgr;2<&lgr;−2&dgr;, so that at least one ABS detector is opposite to a stable area T in each of micro-areas at n successive bits.
    Type: Application
    Filed: February 21, 2003
    Publication date: October 2, 2003
    Inventors: Yasuo Nekado, Michio Okano, Shigeru Ishimoto, Mitsuru Ohno, Masaaki Kusumi
  • Patent number: 6490807
    Abstract: A stable signal is output in which when there is no movement, unstable output change does not occur, and an output change exceeding a predetermined limit does not occur. The variation &Dgr;PH in the output angle signal PH to be output is subjected to hysteresis and through rate limitations with respect to the variation APF in the input angle signal input thereto. When the variation APF in the input signal is in a hysteresis range of −Hys<&Dgr;PF<+Hys, the variation in the output angle signal is output as 0. When the variation &Dgr;PF in the input signal is in a hysteresis range of &Dgr;PF<−(Hys+SR) or &Dgr;PF>(Hys+SR), a through rate limitation is effected to thereby clip the variation in the output angle signal to SR. When the variation &Dgr;PF is in other regions, the output follows the input linearly with the output delayed by the hysteresis quantity.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: December 10, 2002
    Assignee: Sony Precision Technology Inc.
    Inventors: Masato Tanaka, Shigeru Ishimoto, Toyohiko Matsuda, Katsumi Kitamura