Patents by Inventor Masanori Okubayashi
Masanori Okubayashi 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: 11652431Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: GrantFiled: December 6, 2021Date of Patent: May 16, 2023Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori Okubayashi
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Publication number: 20220094286Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: ApplicationFiled: December 6, 2021Publication date: March 24, 2022Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori OKUBAYASHI
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Patent number: 11228265Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: GrantFiled: February 24, 2020Date of Patent: January 18, 2022Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori Okubayashi
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Publication number: 20200195179Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: ApplicationFiled: February 24, 2020Publication date: June 18, 2020Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori OKUBAYASHI
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Patent number: 10644625Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: GrantFiled: January 12, 2018Date of Patent: May 5, 2020Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori Okubayashi
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Patent number: 10461672Abstract: Implementations of methods for sensing rotor positions of a motor may include coupling a controller with a PMSM and applying, using the controller, a plurality of vectors to the PMSM, the plurality of vectors including a plurality of dummy vectors and a plurality of measured vectors, wherein at least one measured vector is applied quadrature to a dummy vector from the plurality of dummy vectors immediately preceding each measured vector. The method may also include measuring, with a measurement circuit, a plurality of values from a three-phase inverter coupled with the PMSM, each value of the plurality of values corresponding with one of the plurality of measured vectors, and calculating, with one or more logic elements coupled with the PMSM, based on the plurality of values and using one or more position algorithms, a position of a rotor of the PMSM relative to a stator of the PMSM.Type: GrantFiled: January 4, 2019Date of Patent: October 29, 2019Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Masanori Okubayashi, Kazumasa Takai
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Publication number: 20190157996Abstract: Implementations of methods for sensing rotor positions of a motor may include coupling a controller with a PMSM and applying, using the controller, a plurality of vectors to the PMSM, the plurality of vectors including a plurality of dummy vectors and a plurality of measured vectors, wherein at least one measured vector is applied quadrature to a dummy vector from the plurality of dummy vectors immediately preceding each measured vector. The method may also include measuring, with a measurement circuit, a plurality of values from a three-phase inverter coupled with the PMSM, each value of the plurality of values corresponding with one of the plurality of measured vectors, and calculating, with one or more logic elements coupled with the PMSM, based on the plurality of values and using one or more position algorithms, a position of a rotor of the PMSM relative to a stator of the PMSM.Type: ApplicationFiled: January 4, 2019Publication date: May 23, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Masanori Okubayashi, Kazumasa Takai
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Publication number: 20190068093Abstract: Implementations of methods for sensing rotor positions of a motor may include coupling a controller with a PMSM and applying, using the controller, a plurality of vectors to the PMSM, the plurality of vectors including a plurality of dummy vectors and a plurality of measured vectors, wherein at least one measured vector is applied quadrature to a dummy vector from the plurality of dummy vectors immediately preceding each measured vector. The method may also include measuring, with a measurement circuit, a plurality of values from a three-phase inverter coupled with the PMSM, each value of the plurality of values corresponding with one of the plurality of measured vectors, and calculating, with one or more logic elements coupled with the PMSM, based on the plurality of values and using one or more position algorithms, a position of a rotor of the PMSM relative to a stator of the PMSM.Type: ApplicationFiled: August 29, 2017Publication date: February 28, 2019Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Masanori OKUBAYASHI, Kazumasa TAKAI
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Patent number: 10218296Abstract: Implementations of methods for sensing rotor positions of a motor may include coupling a controller with a PMSM and applying, using the controller, a plurality of vectors to the PMSM, the plurality of vectors including a plurality of dummy vectors and a plurality of measured vectors, wherein at least one measured vector is applied quadrature to a dummy vector from the plurality of dummy vectors immediately preceding each measured vector. The method may also include measuring, with a measurement circuit, a plurality of values from a three-phase inverter coupled with the PMSM, each value of the plurality of values corresponding with one of the plurality of measured vectors, and calculating, with one or more logic elements coupled with the PMSM, based on the plurality of values and using one or more position algorithms, a position of a rotor of the PMSM relative to a stator of the PMSM.Type: GrantFiled: August 29, 2017Date of Patent: February 26, 2019Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Masanori Okubayashi, Kazumasa Takai
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Publication number: 20180175755Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: ApplicationFiled: January 12, 2018Publication date: June 21, 2018Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori OKUBAYASHI
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Patent number: 9876452Abstract: Implementations of a system for sensing rotor position of a PMSM may include: a controller which may be coupled with the PMSM. The controller may be configured to apply a plurality of voltage vectors to the PMSM to generate a plurality of sensing signals from a stator of the PMSM in response. A comparator may be coupled to the PMSM configured to receive and to compare each one of the plurality of sensing signals with a threshold voltage. A rise time measurement circuit may calculate a plurality of rise times using the plurality of sensing signals in response to receiving a signal from the comparator. The rotor-angle estimation circuit may be configured to identify from the plurality of rise times a shortest rise time and a voltage vector corresponding with the shortest rise time and thereby identify the position of the rotor of the PMSM.Type: GrantFiled: December 16, 2016Date of Patent: January 23, 2018Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: Masanori Okubayashi
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Patent number: 8339460Abstract: A video signal processing integrated circuit comprising: a test signal generation circuit configured to generate a test signal in conformity with video additional data superimposed on a video signal; a data slicer configured to binarize the test signal through comparison with a slice level, the test signal being supplied from the test signal generation circuit; and a data processing circuit configured to perform data processing of the video additional data binarized by the data slicer.Type: GrantFiled: May 16, 2008Date of Patent: December 25, 2012Assignees: Semiconductor Components Industries, LLC, Sanyo Semiconductor Co., Ltd.Inventors: Shinichi Yamasaki, Masanori Okubayashi, Kazuyoshi Oshima
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Patent number: 7463308Abstract: A data slicer circuit is disclosed which comprises a control circuit to output a digital signal that increases or decreases by a constant value difference depending on the level of an input signal when the input signal is sampled at a given frequency; a conversion circuit to convert the digital signal to an analog signal; and a comparison circuit to compare the video signal with the analog signal, the comparison circuit outputting the result of the comparison as the input signal to the control circuit, wherein the analog signal corresponding to the result of the comparison of the comparison circuit is used as a slice level for separating the data from the video signal.Type: GrantFiled: September 29, 2004Date of Patent: December 9, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Shinichi Yamasaki, Masanori Okubayashi
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Publication number: 20080284852Abstract: A video signal processing integrated circuit comprising: a test signal generation circuit configured to generate a test signal in conformity with video additional data superimposed on a video signal; a data slicer configured to binarize the test signal through comparison with a slice level, the test signal being supplied from the test signal generation circuit; and a data processing circuit configured to perform data processing of the video additional data binarized by the data slicer.Type: ApplicationFiled: May 16, 2008Publication date: November 20, 2008Applicants: SANYO ELECTRIC CO., LTD., SANYO SEMICONDUCTOR CO., LTD.Inventors: Shinichi Yamasaki, Masanori Okubayashi, Kazuyoshi Oshima
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Patent number: 7332939Abstract: A comparator system for comparing a level of an input signal with a level of a reference signal comprises a first comparator configured to input the input signal to one of input terminals thereof and the reference signal to the other of input terminals thereof, a second comparator configured to input the reference signal to one of input terminals thereof and the input signal to the other of input terminals thereof, and a control circuit configured to input an output of the first comparator and an output of the second comparator. The control circuit selects one of the outputs of the first and second comparators quicker in level change timing, and controls an output signal of the control circuit at the level change timing of the selected output.Type: GrantFiled: September 13, 2004Date of Patent: February 19, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Shinichi Yamasaki, Masanori Okubayashi
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Publication number: 20050174150Abstract: A comparator system for comparing a level of an input signal with a level of a reference signal comprises a first comparator configured to input the input signal to one of input terminals thereof and the reference signal to the other of input terminals thereof, a second comparator configured to input the reference signal to one of input terminals thereof and the input signal to the other of input terminals thereof, and a control circuit configured to input an output of the first comparator and an output of the second comparator. The control circuit selects one of the outputs of the first and second comparators quicker in level change timing, and controls an output signal of the control circuit at the level change timing of the selected output.Type: ApplicationFiled: September 13, 2004Publication date: August 11, 2005Applicant: Sanyo Electric Co., Ltd.Inventors: Shinichi Yamasaki, Masanori Okubayashi
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Publication number: 20050110903Abstract: A data slicer circuit is disclosed which comprises a control circuit to output a digital signal that increases or decreases by a constant value difference depending on the level of an input signal when the input signal is sampled at a given frequency; a conversion circuit to convert the digital signal to an analog signal; and a comparison circuit to compare the video signal with the analog signal, the comparison circuit outputting the result of the comparison as the input signal to the control circuit, wherein the analog signal corresponding to the result of the comparison of the comparison circuit is used as a slice level for separating the data from the video signal.Type: ApplicationFiled: September 29, 2004Publication date: May 26, 2005Inventors: Shinichi Yamasaki, Masanori Okubayashi
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Patent number: 5991849Abstract: A program for rewriting data in an address region B is written in an address region A which can be rewritten by an external PROM writer. After resetting the microcomputer and rewriting the program in address region A, the reset state is cancelled and the last address in address region A of the EEPROM (1) is then stored in a register (17). An address detector (18) prohibits rewriting in address region A based on an address value stored in the register (17).Type: GrantFiled: April 8, 1997Date of Patent: November 23, 1999Assignee: Sanyo Electric Co., LtdInventors: Susumu Yamada, Toru Watanabe, Susumu Kubota, Noriyuki Ogata, Masanori Okubayashi