Patents by Inventor James Hastings Clark
James Hastings Clark 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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Publication number: 20240045519Abstract: A method and corresponding system for providing a depressed state signal from a keyboard or button. The method comprises sensing movement of an actuator of the keyboard or button, determining, during depression of the actuator, a velocity of the actuator at a depression sense position of the actuator and at a first time, processing the determined velocity to predict when the actuator will reach a second depression sense position of the actuator at a later point during depression of the actuator, and generating the depressed state signal with a timing based on the prediction of when the actuator will reach the second depression sense position. A complementary method and system provides a released state signal.Type: ApplicationFiled: November 1, 2021Publication date: February 8, 2024Inventor: James Hastings CLARK
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Publication number: 20230197044Abstract: A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k-1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.Type: ApplicationFiled: January 18, 2023Publication date: June 22, 2023Inventors: James Hastings CLARK, John Michael MCAULIFFE
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Patent number: 11657789Abstract: A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k?1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.Type: GrantFiled: June 18, 2020Date of Patent: May 23, 2023Assignee: SONUUS LIMITEDInventors: James Hastings Clark, John Michael McAuliffe
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Patent number: 11449152Abstract: An electronic drum, comprising: a bottom member; a drum head; a drum sensor comprising: a passive resonant circuit mounted on the drum head and having a resonant frequency; and an active resonant circuit mounted on the bottom member and configured to excite the passive resonant circuit at the resonant frequency; a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency; and a detector to detect a level of RF signal from the driven active resonant circuit for sensing a position and/or velocity of the drum head; and a signal processor, coupled to the detector, configured to process the detected level of RF signal to sense a position and/or velocity of the drum head for determining when the drum head is hit.Type: GrantFiled: August 7, 2019Date of Patent: September 20, 2022Assignee: SONUUS LIMITEDInventors: James Hastings Clark, John Michael McAuliffe
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Patent number: 11422637Abstract: A sensing system for a computer input device. The sensing system comprises an actuator to attach to a key top or button. The actuator is moveable along an axis or hinged. The sensing system further comprises a biasing element to exert a biasing force on the actuator directed along the axis. The sensing system further comprises an actuator motion sensor associated with the actuator. The actuator motion sensor comprises a passive resonant circuit configured to be moved by the actuator and having a resonant frequency, an active resonant circuit configured to excite the passive resonant circuit at the resonant frequency, a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency, and a detector to detect a level of RF signal from a driven actuator motion sensor for sensing a position and/or velocity of the actuator.Type: GrantFiled: August 7, 2019Date of Patent: August 23, 2022Assignee: SONUUS LIMITEDInventors: James Hastings Clark, John Michael McAuliffe, Archibald J. Clark
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Publication number: 20220246122Abstract: A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k?1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.Type: ApplicationFiled: April 21, 2022Publication date: August 4, 2022Inventors: James Hastings CLARK, John Michael MCAULIFFE
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Publication number: 20210304718Abstract: An electronic drum, comprising: a bottom member; a drum head; a drum sensor comprising: a passive resonant circuit mounted on the drum head and having a resonant frequency; and an active resonant circuit mounted on the bottom member and configured to excite the passive resonant circuit at the resonant frequency; a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency; and a detector to detect a level of RF signal from the driven active resonant circuit for sensing a position and/or velocity of the drum head; and a signal processor, coupled to the detector, configured to process the detected level of RF signal to sense a position and/or velocity of the drum head for determining when the drum head is hit.Type: ApplicationFiled: August 7, 2019Publication date: September 30, 2021Inventors: James Hastings CLARK, John Michael MCAULIFFE
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Publication number: 20210294431Abstract: A sensing system for a computer input device. The sensing system comprises an actuator to attach to a key top or button. The actuator is moveable along an axis or hinged. The sensing system further comprises a biasing element to exert a biasing force on the actuator directed along the axis. The sensing system further comprises an actuator motion sensor associated with the actuator. The actuator motion sensor comprises a passive resonant circuit configured to be moved by the actuator and having a resonant frequency, an active resonant circuit configured to excite the passive resonant circuit at the resonant frequency, a sensor driver to drive the active resonant circuit with an RF drive signal at the resonant frequency, and a detector to detect a level of RF signal from a driven actuator motion sensor for sensing a position and/or velocity of the actuator.Type: ApplicationFiled: August 7, 2019Publication date: September 23, 2021Inventors: James Hastings CLARK, John Michael MCAULIFFE, Archibald J. CLARK
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Publication number: 20200320966Abstract: A sensing system for a keyboard. Each key sensor comprises passive and active resonant circuits. The passive resonant circuit has a resonant frequency and the active resonant circuit excites the passive resonant circuit at the resonant frequency. A sensor driver drives the active resonant circuit with an RF drive signal, a multiplexing system multiplexes the drive signal such that simultaneously driven key sensors are separated by at least (k?1) keys, and a detector detects a level of RF signal from a driven key sensor for sensing a position and/or velocity of a key.Type: ApplicationFiled: June 18, 2020Publication date: October 8, 2020Inventors: James Hastings CLARK, John Michael MCAULIFFE
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Publication number: 20150170625Abstract: We describe a position sensor comprising drive electronics to drive a first tuned resonant circuit at a resonant frequency, a moveable mechanical control associated with a second, passive tuned resonant circuit and read-out electronics coupled to the first tuned resonant circuit to sense a position of the control. A first frequency of resonance of the first tuned resonant circuit matches a second frequency of resonance of the second, passive tuned circuit, and the first and second frequency resonance match a resonant frequency of the drive signal. The first tuned resonant circuit has an input coupled to the drive electronics, an output coupled to the read-out electronics and a resonant LC circuit coupled in series between the input and output. The variable output signal is dependent on an amplitude of a signal at the output of the first tuned resonant circuit.Type: ApplicationFiled: December 11, 2014Publication date: June 18, 2015Applicant: SONUUS LIMITEDInventors: JAMES HASTINGS CLARK, MORAG E. CLARK, JOHN M. MCAULIFFE
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Patent number: 8933314Abstract: We describe a musical effect device comprising drive electronics to drive a first tuned resonant circuit at a resonant frequency, a moveable mechanical control associated with a second, passive tuned resonant circuit and read-out electronics coupled to the first tuned resonant circuit to sense a position of the control. A first frequency of resonance of the first tuned resonant circuit matches a second frequency of resonance of the second, passive tuned circuit, and the first and second frequency resonance match a resonant frequency of the drive signal. The first tuned resonant circuit has an input coupled to the drive electronics, an output coupled to the read-out electronics and a resonant LC circuit coupled in series between the input and output. The variable output signal is dependent on an amplitude of a signal at the output of the first tuned resonant circuit.Type: GrantFiled: August 28, 2012Date of Patent: January 13, 2015Assignee: Sonuus LimitedInventors: James Hastings Clark, Morag E. Clark, John M. McAuliffe
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Publication number: 20130055879Abstract: We describe a musical effect device comprising drive electronics to drive a first tuned resonant circuit at a resonant frequency, a moveable mechanical control associated with a second, passive tuned resonant circuit and read-out electronics coupled to the first tuned resonant circuit to sense a position of the control. A first frequency of resonance of the first tuned resonant circuit matches a second frequency of resonance of the second, passive tuned circuit, and the first and second frequency resonance match a resonant frequency of the drive signal. The first tuned resonant circuit has an input coupled to the drive electronics, an output coupled to the read-out electronics and a resonant LC circuit coupled in series between the input and output. The variable output signal is dependent on an amplitude of a signal at the output of the first tuned resonant circuit.Type: ApplicationFiled: August 28, 2012Publication date: March 7, 2013Applicant: SONUUS LIMITEDInventors: James Hastings Clark, Morag E. Clark, John M. McAuliffe
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Patent number: 7763789Abstract: The present invention relates to musical instrument tuners, more particularly to a tuner for providing tuning information regarding a musical instrument without making physical or electrical contact with the instrument. We describe a musical instrument tuner for providing tuning information for tuning a musical instrument, said musical instrument having a vibrating element, the tuner comprising: a light source for emitting light onto the said vibrating element; a light detector for detecting reflected light; an amplifier coupled to said light detector for amplifying a signal from said light detector; and tuning indication means coupled to said amplifier for providing tuning information responsive to said amplified signal.Type: GrantFiled: January 24, 2008Date of Patent: July 27, 2010Inventor: James Hastings Clark
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Publication number: 20080229907Abstract: The present invention relates to musical instrument tuners, more particularly to a tuner for providing tuning information regarding a musical instrument without making physical or electrical contact with the instrument. We describe a musical instrument tuner for providing tuning information for tuning a musical instrument, said musical instrument having a vibrating element, the tuner comprising: a light source for emitting light onto the said vibrating element; a light detector for detecting reflected light; an amplifier coupled to said light detector for amplifying a signal from said light detector; and tuning indication means coupled to said amplifier for providing tuning information responsive to said amplified signal.Type: ApplicationFiled: January 24, 2008Publication date: September 25, 2008Inventor: James Hastings Clark