Patents by Inventor Eiichi Saito
Eiichi Saito 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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Patent number: 11958720Abstract: There is provided a vibration suppression device for a rope-like body of an elevator that can inhibit displacement of the rope-like body from becoming unstable due to amplification of the displacement and can make a movable range of the rope-like body wider. A vibration suppression device (20) includes a movable unit and a stopper. The movable unit can move in a direction in which a distance from an equilibrium position (19) of the rope-like body changes. The stopper restricts movement of the movable unit to a position closer than a first distance (d1) from the equilibrium position (19). The movable unit includes a displacement amplifier and a restriction member. The displacement amplifier is arranged to be directed to a first position (P1) of the rope-like body. The displacement amplifier amplifies displacement of the rope-like body. The restriction member inhibits the rope-like body from approaching the displacement amplifier.Type: GrantFiled: November 6, 2019Date of Patent: April 16, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomohiro Asamura, Eiichi Saito, Seiji Watanabe
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Publication number: 20220381317Abstract: There is provided a vibration suppression device of a rope-like body that can use a negative restoring force that amplifies a displacement of a rope-like body of an elevator to prevent the displacement from becoming unstable. A vibration suppression device (21) includes a first displacement measurement unit, a first displacement amplifier, and a control unit (24). The first displacement measurement unit measures a displacement in a lateral direction of the rope-like body due to vibration about an equilibrium position (20) at a first position (P1) in a longitudinal direction of the rope-like body. The first displacement amplifier applies, to the rope-like body, a negative restoring force that amplifies the displacement of the rope-like body. The control unit (24) causes the first displacement amplifier to apply a negative restoring force smaller than a positive restoring force, based on the displacement measured by the first displacement measurement unit.Type: ApplicationFiled: November 6, 2019Publication date: December 1, 2022Applicant: Mitsubishi Electric CorporationInventors: Tomohiro ASAMURA, Eiichi SAITO
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Publication number: 20220371858Abstract: There is provided a vibration suppression device for a rope-like body of an elevator that can inhibit displacement of the rope-like body from becoming unstable due to amplification of the displacement and can make a movable range of the rope-like body wider. A vibration suppression device (20) includes a movable unit and a stopper. The movable unit can move in a direction in which a distance from an equilibrium position (19) of the rope-like body changes. The stopper restricts movement of the movable unit to a position closer than a first distance (d1) from the equilibrium position (19). The movable unit includes a displacement amplifier and a restriction member. The displacement amplifier is arranged to be directed to a first position (P1) of the rope-like body. The displacement amplifier amplifies displacement of the rope-like body. The restriction member inhibits the rope-like body from approaching the displacement amplifier.Type: ApplicationFiled: November 6, 2019Publication date: November 24, 2022Applicant: Mitsubishi Electric CorporationInventors: Tomohiro ASAMURA, Eiichi SAITO, Seiji WATANABE
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Publication number: 20220112052Abstract: The vibration damping device for an elevator rope includes: an actuator, which is placed in a hoistway, and is configured to generate a forced displacement in response to a drive input and apply a force generated by the forced displacement to an elevator rope; a lateral vibration measuring unit configured to measure a lateral vibration generated in the elevator rope and output the measured lateral vibration as lateral vibration information; a lateral vibration estimation unit configured to estimate a lateral vibration of the elevator rope at a position of the actuator based on the lateral vibration information and output the lateral vibration as an estimated lateral vibration; and an actuator drive unit configured to output the drive input to the actuator to drive the actuator so that the forced displacement has a phase reverse to a phase of the estimated lateral vibration output from the lateral vibration estimation unit.Type: ApplicationFiled: June 18, 2018Publication date: April 14, 2022Applicant: Mitsubishi Electric CorporationInventors: Daisuke NAKAZAWA, Eiichi SAITO
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Publication number: 20210231190Abstract: A vibration damping device for reducing vibration of an elevator rope includes a displacement amplifier arranged around a region from a first portion of the elevator rope drawn and a second portion of the elevator rope drawn from an opposite side of one or more sheaves in parallel with the first portion. The displacement amplifier is configured to amplify a displacement of each of the first portion and the second portion of the elevator rope. The device also includes a limiting member that controls displacement amplification performed by the displacement amplifier such that the displacement of the first portion or the second portion amplified by the displacement amplifier does not become greater than a first displacement, which is a displacement of the elevator rope by which the elevator rope is not allowed to return to an equilibrium position of the vibration.Type: ApplicationFiled: December 3, 2018Publication date: July 29, 2021Applicant: Mitsubishi Electric CorporationInventors: Eiichi SAITO, Takahide HIRAI, Seiji WATANABE, Daisuke NAKAZAWA, Daiki FUKUI, Tomohiro ASAMURA, Yusuke CHIKADA
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Patent number: 11006349Abstract: The disclosure provides a communication system and a program update method. In a communication system according to the disclosure, when a host device updates a program stored in each of a plurality of communication terminals, first, the host device transmits a distribution preparation completion signal by broadcast. Each of the plurality of communication terminals transmits a start request signal to the host device in response to reception of the distribution preparation completion signal. The host device transmits a permission signal for giving a right for performing a data request to one communication terminal that has transmitted the start request signal earliest. The one communication terminal transmits a data request signal to the host device in response to reception of the permission signal. The host device transmits the update program data by broadcast to the plurality of communication terminals in response to reception of the data request signal.Type: GrantFiled: July 19, 2019Date of Patent: May 11, 2021Assignee: LAPIS Semiconductor Co., Ltd.Inventors: Yoshiyuki Tanaka, Naotaka Saito, Eiichi Saito
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Publication number: 20210130127Abstract: An object of the present invention is to provide a sway amount estimation system that can suppress a reduction in user convenience that would occur if the operation method is switched more than necessary. A sway amount estimation system (300) includes a sensing unit (78), a judgment unit (80), and an estimation unit (79). The estimation unit (79) calculates an estimated value of the amount of sway of an elevator rope due to vibration caused by building sway based on the sway sensed by the sensing unit (78) and an estimation model incorporating the effect of the displacement amplification of the displacement amplifier (7). The judgment unit (80) judges if the estimated value calculated by the estimation unit (79) is greater than a threshold for switching the operation method for the elevator apparatus (11).Type: ApplicationFiled: December 3, 2018Publication date: May 6, 2021Applicant: Mitsubishi Electric CorporationInventors: Eiichi SAITO, Takahide HIRAI, Seiji WATANABE, Daisuke NAKAZAWA, Daiki FUKUI, Tomohiro ASAMURA, Yusuke CHIKADA
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Publication number: 20210094799Abstract: An object of the present invention is to provide a vibration damping device including an instability preventing means, for efficiently suppressing amplification of vibration of a long structure, which is mechanically flexible, due to a resonance phenomenon. A vibration damping device (100) for reducing vibration of a long structure (1) includes a displacement amplifier (7) and limiting members (8). The displacement amplifier (7) is arranged along a given position in the longitudinal direction of the structure (1). The displacement amplifier (7) amplifies a displacement of the structure (1). The limiting members (8) control displacement amplification performed by the displacement amplifier (7) such that the displacement of the structure (1) amplified by the displacement amplifier (7) does not become greater than a first displacement, the first displacement being a displacement of the structure (1) by which the structure (1) is not allowed to return to the equilibrium position of the vibration.Type: ApplicationFiled: December 3, 2018Publication date: April 1, 2021Applicant: Mitsubishi Electric CorporationInventors: Eiichi SAITO, Takahide HIRAI, Seiji WATANABE, Daisuke NAKAZAWA, Daiki FUKUI, Tomohiro ASAMURA, Yusuke CHIKADA
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Publication number: 20210094793Abstract: An object of the invention is to provide a vibration damping system that can avoid the occurrence of resonance of an elevator rope regardless of the vibration frequency of a vibration source. A vibration damping system (200) includes a displacement amplifier (7), a calculation unit (66), and a displacement amplification control unit (67). The displacement amplifier (7) is arranged along a given position in the longitudinal direction of the elevator rope. The displacement amplifier (7) amplifies a displacement due to vibration of the elevator rope based on a variable amplification factor. The calculation unit (66) calculates the natural frequency of the elevator rope. The displacement amplification control unit (67) controls the displacement amplification of the displacement amplifier (7) based on the natural frequency calculated by the calculation unit (66) and a preset vibration frequency.Type: ApplicationFiled: December 3, 2018Publication date: April 1, 2021Applicant: Mitsubishi Electric CorporationInventors: Eiichi SAITO, Takahide HIRAI, Seiji WATANABE, Daisuke NAKAZAWA, Daiki FUKUI, Tomohiro ASAMURA, Yusuke CHIKADA
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Patent number: 10838408Abstract: A vibration control device moves an object by controlling an actuator. The vibration control device controls a position and speed of the actuator, generates a model by modeling the object; and calculates an inverse system output based on the model and the control to provide positive feedback of a position of the object based on the inverse system output.Type: GrantFiled: July 19, 2016Date of Patent: November 17, 2020Assignee: KEIO UNIVERSITYInventors: Seiichiro Katsura, Eiichi Saito
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Publication number: 20200045616Abstract: The disclosure provides a communication system and a program update method. In a communication system according to the disclosure, when a host device updates a program stored in each of a plurality of communication terminals, first, the host device transmits a distribution preparation completion signal by broadcast. Each of the plurality of communication terminals transmits a start request signal to the host device in response to reception of the distribution preparation completion signal. The host device transmits a permission signal for giving a right for performing a data request to one communication terminal that has transmitted the start request signal earliest. The one communication terminal transmits a data request signal to the host device in response to reception of the permission signal. The host device transmits the update program data by broadcast to the plurality of communication terminals in response to reception of the data request signal.Type: ApplicationFiled: July 19, 2019Publication date: February 6, 2020Applicant: LAPIS Semiconductor Co., Ltd.Inventors: Yoshiyuki Tanaka, Naotaka Saito, Eiichi Saito
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Publication number: 20190072935Abstract: A vibration control device moves an object by controlling an actuator. The vibration control device controls a position and speed of the actuator, generates a model by modeling the object; and calculates an inverse system output based on the model and the control to provide positive feedback of a position of the object based on the inverse system output.Type: ApplicationFiled: July 19, 2016Publication date: March 7, 2019Inventors: Seiichiro KATSURA, Eiichi SAITO
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Patent number: 8797367Abstract: A display device is provided that includes an amount of light emission computation portion that computes an amount of light emission based on a video signal that has a linear characteristic, an amount of light emission parameter computation portion that, based on the computed amount of light emission, computes an amount of light emission parameter that corresponds to the amount of light emission for each of one of one pixel and a group of pixels that includes a plurality of the pixels, an amount of light emission parameter accumulation portion that accumulates the amount of light emission parameters in association with the one of the one pixel and the group of pixels, a peak detection portion that detects a peak value among the accumulated amount of light emission parameters that correspond to all of the one of the one pixel and the group of pixels, a coefficient computation portion that, based on the detected peak value, computes a coefficient that adjusts a luminance, and a coefficient multiplying portion tType: GrantFiled: June 2, 2008Date of Patent: August 5, 2014Assignee: Sony CorporationInventors: Hideto Mori, Ken Kikuchi, Yasuo Inoue, Takeya Meguro, Hidehiko Shidara, Masahiro Ito, Toyo Osumi, Eiichi Saito
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Patent number: 8462085Abstract: Provided is a display device including a display unit having luminescence elements that individually becomes luminous depending on a current amount. The luminescence elements are arranged in a matrix pattern. The display device includes an adjustment signal generator for generating an adjustment signal for adjusting an effective duty regulating a luminous time per unit time. The luminescence elements are luminous for the luminous time. The display device also includes a luminous time setter for setting the effective duty equal to or lower than an upper limit value provided for the effective duty to be set, according to picture information of an input picture signal, so that a total luminescence amount per unit time is limited, at which amount the luminescence elements of the display unit are luminous.Type: GrantFiled: June 11, 2008Date of Patent: June 11, 2013Assignee: Sony CorporationInventors: Yasuo Inoue, Takeya Meguro, Eiichi Saito
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Publication number: 20100171770Abstract: Provided is a display device including a display unit having luminescence elements that individually becomes luminous depending on a current amount. The luminescence elements are arranged in a matrix pattern. The display device includes an adjustment signal generator for generating an adjustment signal for adjusting an effective duty regulating a luminous time per unit time. The luminescence elements are luminous for the luminous time. The display device also includes a luminous time setter for setting the effective duty equal to or lower than an upper limit value provided for the effective duty to be set, according to picture information of an input picture signal, so that a total luminescence amount per unit time is limited, at which amount the luminescence elements of the display unit are luminous.Type: ApplicationFiled: June 11, 2008Publication date: July 8, 2010Applicant: SONY CORPORATIONInventors: Yasuo Inoue, Takeya Meguro, Eiichi Saito
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Publication number: 20100165009Abstract: A display device is provided that includes an amount of light emission computation portion that computes an amount of light emission based on a video signal that has a linear characteristic, an amount of light emission parameter computation portion that, based on the computed amount of light emission, computes an amount of light emission parameter that corresponds to the amount of light emission for each of one of one pixel and a group of pixels that includes a plurality of the pixels, an amount of light emission parameter accumulation portion that accumulates the amount of light emission parameters in association with the one of the one pixel and the group of pixels, a peak detection portion that detects a peak value among the accumulated amount of light emission parameters that correspond to all of the one of the one pixel and the group of pixels, a coefficient computation portion that, based on the detected peak value, computes a coefficient that adjusts a luminance, and a coefficient multiplying portion tType: ApplicationFiled: June 2, 2008Publication date: July 1, 2010Applicant: Sony CorporationInventors: Hideto Mori, Ken Kikuchi, Yasuo Inoue, Takeya Meguro, Hidehiko Shidara, Masahiro Ito, Toyo Osumi, Eiichi Saito
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Patent number: 7095516Abstract: A printing apparatus includes a recording medium for recording image data and recording medium information, a recording medium read-out device, a print control device for giving a print command for printing the image data, a recording device for recording the recording medium information of the recording medium and information on automatic print records and a comparator. When the print control device has detected that a battery for a power source will run down during printing, the comparator detects, after turning on of the power source again, that the recording medium information of the recording device is coincident with that of the recording medium and then, the print control device gives a further print command for continuously printing, in accordance with the information on the automatic print records recorded in the recording device, the image data designated by the print command given prior to turning on of the power source again.Type: GrantFiled: January 30, 2003Date of Patent: August 22, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayuki Yamashita, Eiichi Saito
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Publication number: 20030147094Abstract: A printing apparatus includes a recording medium for recording image data and recording medium information, a recording medium read-out device, a print control device for giving a print command for printing the image data, a recording device for recording the recording medium information of the recording medium and information on automatic print records and a comparator. When the print control device has detected that a battery for a power source will run down during printing, the comparator detects, after turning on of the power source again, that the recording medium information of the recording device is coincident with that of the recording medium and then, the print control device gives a further print command for continuously printing, in accordance with the information on the automatic print records recorded in the recording device, the image data designated by the print command given prior to turning on of the power source again.Type: ApplicationFiled: January 30, 2003Publication date: August 7, 2003Inventors: Masayuki Yamashita, Eiichi Saito
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Patent number: 5509524Abstract: A transporting apparatus for a container 1 has a sequentially arranged filling process path 13C for performing filling process for the container 1, a empty container infeed starwheel 12 for introducing the container 1 into the filling process path 13C, a discharge starwheel 16 for feeding out the container 1 from the filling process path 13C and a discharge conveyer 17. One of the empty container infeed starwheel 12, and the discharge starwheel 16 and the discharge conveyer 17 is arranged in an intersecting manner with respect to the filling process path 13C with a different level.Type: GrantFiled: January 11, 1994Date of Patent: April 23, 1996Assignee: Kao Corporation and Shibuya Kogyo Co., Ltd.Inventors: Toshiyuki Ohmori, Shigemi Hatanaka, Yasuhiro Honma, Hiroaki Kobayashi, Eiichi Saito, Ichiro Hamano
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Patent number: 5437361Abstract: A filling method is disclosed, which comprises a step of filling a content into a bottle 1 and a step of fitting a cap 2 on the bolt 1 with the content charged thereinto. The bottle 1 is conveyed in a state held by a bottle container 3 on a conveyor, while the cap 2 is conveyed in a state held by a cap holder 4 on a conveyor.Type: GrantFiled: April 7, 1994Date of Patent: August 1, 1995Assignee: Kao CorporationInventors: Toshiyuki Ohmori, Shigemi Hatanaka, Yasuhiro Homma, Eiichi Saito, Nobuyuki Kamishioiri