Patents by Inventor Offir Duvdevany
Offir Duvdevany 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: 11681140Abstract: Mirror control circuitry operates to control a movable mirror. The mirror control circuitry includes drive circuitry for providing a drive signal to the movable mirror, and a processor. The processor causes the drive circuitry to generate the drive signal so as to have pulses with leading edges occurring an offset period of time after a maximum opening angle of the movable mirror and trailing edges occurring an offset period of time before a zero crossing of the movable mirror. The processor may sample a mirror sense signal from the movable mirror at times at which a derivative of capacitance of the movable mirror with respect to time is zero, and then perform an action based upon the samples.Type: GrantFiled: April 22, 2020Date of Patent: June 20, 2023Assignee: STMicroelectronics LtdInventors: Sivan Kinstlich, Offir Duvdevany
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Patent number: 11226480Abstract: An electronic device includes an analog to digital converter receiving an analog mirror sense signal from an oscillating mirror and generating a digital mirror sense signal therefrom, and a digital signal processing block. The digital signal processing block cooperates with the analog to digital converter to take a first sample of the digital mirror sense signal at a first time where a derivative of capacitance of the digital mirror sense signal crosses zero, take a second sample of the digital mirror sense signal at a second time between a peak of the digital mirror sense signal and the first time, and take a third sample of the digital mirror sense signal at a third time after the digital mirror sense signal has reached a minimum. Control circuitry determines an opening angle of the oscillating mirror as a function of the first, second, and third samples.Type: GrantFiled: June 10, 2020Date of Patent: January 18, 2022Assignee: STMicroelectronics LTDInventors: Elik Haran, Offir Duvdevany, Naomi Petrushevsky
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Publication number: 20200301127Abstract: An electronic device includes an analog to digital converter receiving an analog mirror sense signal from an oscillating mirror and generating a digital mirror sense signal therefrom, and a digital signal processing block. The digital signal processing block cooperates with the analog to digital converter to take a first sample of the digital mirror sense signal at a first time where a derivative of capacitance of the digital mirror sense signal crosses zero, take a second sample of the digital mirror sense signal at a second time between a peak of the digital mirror sense signal and the first time, and take a third sample of the digital mirror sense signal at a third time after the digital mirror sense signal has reached a minimum. Control circuitry determines an opening angle of the oscillating mirror as a function of the first, second, and third samples.Type: ApplicationFiled: June 10, 2020Publication date: September 24, 2020Applicant: STMicroelectronics LTDInventors: Elik HARAN, Offir DUVDEVANY, Naomi PETRUSHEVSKY
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Publication number: 20200249465Abstract: Mirror control circuitry operates to control a movable mirror. The mirror control circuitry includes drive circuitry for providing a drive signal to the movable mirror, and a processor. The processor causes the drive circuitry to generate the drive signal so as to have pulses with leading edges occurring an offset period of time after a maximum opening angle of the movable mirror and trailing edges occurring an offset period of time before a zero crossing of the movable mirror. The processor may sample a mirror sense signal from the movable mirror at times at which a derivative of capacitance of the movable mirror with respect to time is zero, and then perform an action based upon the samples.Type: ApplicationFiled: April 22, 2020Publication date: August 6, 2020Applicant: STMicroelectronics LtdInventors: Sivan KINSTLICH, Offir DUVDEVANY
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Patent number: 10718940Abstract: Disclosed herein is an electronic device that includes a peak detection circuit configured to receive a mirror sense signal from an oscillating mirror and to generate peak information for a mirror period as a function thereof. The electronic device includes a mirror control circuit that estimates an opening angle of the oscillating mirror as a function of the peak information, generates a control signal for the oscillating mirror as a function of the estimated opening angle, and resets the peak detection circuit at an end of the mirror period.Type: GrantFiled: December 12, 2017Date of Patent: July 21, 2020Assignee: STMicroelectronics LtdInventors: Elik Haran, Offir Duvdevany, Naomi Petrushevsky
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Patent number: 10684465Abstract: Described herein is a device including mirror control circuitry for controlling a movable mirror. The mirror control circuitry includes drive circuitry for providing a drive signal to the movable mirror, and a processor. The processor cause the drive circuitry to generate the drive signal so as to have pulses with leading edges occurring an offset period of time after a maximum opening angle of the movable mirror and trailing edges occurring an offset period of time before a zero crossing of the movable mirror. The processor may sample a mirror sense signal from the movable mirror at times at which a derivative of capacitance of the movable mirror with respect to time is zero, and then perform an action based upon the samples.Type: GrantFiled: October 2, 2017Date of Patent: June 16, 2020Assignee: STMicroelectronics LtdInventors: Sivan Kinstlich, Offir Duvdevany
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Patent number: 10642025Abstract: The method for controlling an angular position of a MEMS mirror, includes: applying a first driving moment to the MEMS mirror to generate a rotational scanning movement of the mirror; and, at a zooming instant, applying a second driving moment to the MEMS mirror, wherein the second driving moment is equal to the first driving moment plus an extra moment. The extra moment may be a DC offset. After a transient period of time from zooming instant, a third driving moment M2=k{dot over (?)}2t is applied. The first and third driving moment are variable linearly with time. The driving moments are applied to torsional springs of the mirror.Type: GrantFiled: September 29, 2016Date of Patent: May 5, 2020Assignee: STMICROELECTRONICS LTD.Inventors: Offir Duvdevany, Dadi Sharon, Sason Sourani
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Patent number: 10365474Abstract: Disclosed herein is a mirror controller for an oscillating mirror. The mirror controller includes a processor configured to receive a mirror sense signal from the oscillating mirror and to determine a phase error between the mirror sense signal and a mirror drive signal. The processor determines the phase error by sampling the mirror sense signal at a first time, sampling the mirror sense signal at a second time at which the mirror sense signal is expected to be equal to the mirror sense signal as sampled at the first time, and generating the phase error as a function of a difference between the sample of the mirror sense signal at the second time and the sample of the mirror sense signal at the first time.Type: GrantFiled: June 5, 2017Date of Patent: July 30, 2019Assignee: STMicroelectronics LtdInventors: Offir Duvdevany, Naomi Petrushevsky
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Patent number: 10365476Abstract: Mirror control circuitry described herein is for controlling a first micro-mirror of a micro-mirror apparatus that scans across a target area in a scan pattern. The mirror control circuitry includes a processor that determines a mechanical angle of the first micro-mirror for a given instant in time during scanning of the first micro-mirror between upper and lower rotational limits, the mechanical angle being such to maintain the scan pattern as being uniform while the micro-mirror apparatus scans across the target area between the upper and lower rotational limits. The processor also generates a driving signal for the first micro-mirror as a function of the determined mechanical angle for the first micro-mirror at the given instant in time.Type: GrantFiled: July 6, 2017Date of Patent: July 30, 2019Assignee: STMicroelectronics LtdInventors: Guy Amor, Offir Duvdevany
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Patent number: 10324283Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.Type: GrantFiled: October 3, 2017Date of Patent: June 18, 2019Assignee: STMicroelectronics LtdInventor: Offir Duvdevany
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Publication number: 20190101744Abstract: Described herein is a device including mirror control circuitry for controlling a movable mirror. The mirror control circuitry includes drive circuitry for providing a drive signal to the movable mirror, and a processor. The processor cause the drive circuitry to generate the drive signal so as to have pulses with leading edges occurring an offset period of time after a maximum opening angle of the movable mirror and trailing edges occurring an offset period of time before a zero crossing of the movable mirror. The processor may sample a mirror sense signal from the movable mirror at times at which a derivative of capacitance of the movable mirror with respect to time is zero, and then perform an action based upon the samples.Type: ApplicationFiled: October 2, 2017Publication date: April 4, 2019Applicant: STMicroelectronics LtdInventors: Sivan Kinstlich, Offir Duvdevany
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Publication number: 20190011695Abstract: Mirror control circuitry described herein is for controlling a first micro-mirror of a micro-mirror apparatus that scans across a target area in a scan pattern. The mirror control circuitry includes a processor that determines a mechanical angle of the first micro-mirror for a given instant in time during scanning of the first micro-mirror between upper and lower rotational limits, the mechanical angle being such to maintain the scan pattern as being uniform while the micro-mirror apparatus scans across the target area between the upper and lower rotational limits. The processor also generates a driving signal for the first micro-mirror as a function of the determined mechanical angle for the first micro-mirror at the given instant in time.Type: ApplicationFiled: July 6, 2017Publication date: January 10, 2019Applicant: STMicroelectronics LtdInventors: Guy Amor, Offir Duvdevany
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Publication number: 20180348506Abstract: Disclosed herein is a mirror controller for an oscillating mirror. The mirror controller includes a processor configured to receive a mirror sense signal from the oscillating mirror and to determine a phase error between the mirror sense signal and a mirror drive signal. The processor determines the phase error by sampling the mirror sense signal at a first time, sampling the mirror sense signal at a second time at which the mirror sense signal is expected to be equal to the mirror sense signal as sampled at the first time, and generating the phase error as a function of a difference between the sample of the mirror sense signal at the second time and the sample of the mirror sense signal at the first time.Type: ApplicationFiled: June 5, 2017Publication date: December 6, 2018Applicant: STMicroelectronics LtdInventors: Offir Duvdevany, Naomi Petrushevsky
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Publication number: 20180164579Abstract: Disclosed herein is an electronic device that includes a peak detection circuit configured to receive a mirror sense signal from an oscillating mirror and to generate peak information for a mirror period as a function thereof. The electronic device includes a mirror control circuit that estimates an opening angle of the oscillating mirror as a function of the peak information, generates a control signal for the oscillating mirror as a function of the estimated opening angle, and resets the peak detection circuit at an end of the mirror period.Type: ApplicationFiled: December 12, 2017Publication date: June 14, 2018Applicant: STMicroelectronics LtdInventors: Elik Haran, Offir Duvdevany, Naomi Petrushevsky
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Publication number: 20180024351Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.Type: ApplicationFiled: October 3, 2017Publication date: January 25, 2018Applicant: STMicroelectronics LtdInventor: Offir Duvdevany
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Patent number: 9810902Abstract: A device disclosed herein includes a feedback measuring circuit to measure a signal flowing through a movable MEMS mirror. Processing circuitry determines a time at which the signal indicates that a capacitance of the movable MEMS mirror is substantially at a maximum capacitance. The processing circuitry also determines, over a window of time extending from the time at which the signal indicates that the capacitance of the movable MEMS mirror is substantially at the maximum to a given time, a total change in capacitance of the movable MEMS mirror compared to the maximum capacitance. The processor further determines the capacitance at the given time as a function of the total change in capacitance, and determines an opening angle of the movable MEMS mirror as a function of the capacitance at the given time.Type: GrantFiled: June 24, 2016Date of Patent: November 7, 2017Assignee: STMicroelectronics LtdInventor: Offir Duvdevany
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Publication number: 20170285327Abstract: The method for controlling an angular position of a MEMS mirror, includes: applying a first driving moment to the MEMS mirror to generate a rotational scanning movement of the mirror; and, at a zooming instant, applying a second driving moment to the MEMS mirror, wherein the second driving moment is equal to the first driving moment plus an extra moment. The extra moment may be a DC offset. After a transient period of time from zooming instant, a third driving moment M2=k{dot over (?)}2t is applied. The first and third driving moment are variable linearly with time. The driving moments are applied to torsional springs of the mirror.Type: ApplicationFiled: September 29, 2016Publication date: October 5, 2017Inventors: Offir Duvdevany, Dadi Sharon, Sason Sourani