Patents by Inventor Robert Adamson
Robert Adamson 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: 11885877Abstract: Encoded transmit signals are provided to an ultrasound array such diverging ultrasound waves are sequentially transmitted. Each diverging ultrasound wave is generated by a respective set of encoded transmit signals, where each set of encoded transmit signals is encoded by a respective row of an N×N invertible orthogonal matrix. Only a selected subset of M rows, with N<M, is employed to encode the transmit signals. Sets of receive signals detected in response to the transmitted diverging ultrasound waves are decoded via a transposed matrix generated based on the invertible orthogonal matrix, with each set of decoded receive signals being associated with insonification via a subset of the ultrasound array elements in the fixed aperture. Synthetic aperture beamforming is performed on the decoded receive signals to generate an ultrasound image.Type: GrantFiled: April 24, 2019Date of Patent: January 30, 2024Assignee: DALHOUSIE UNIVERSITYInventors: Christopher Samson, Jeremy Brown, Katherine Latham, Robert Adamson
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Patent number: 11191434Abstract: Systems and methods are provided for performing OCT vibrography based on the synchronization of components of the OCT vibrography system. An A-scan trigger is employed to synchronize the operation of the scanning subsystem that scans the sample beam and an acoustic stimulus source that generates an acoustic stimulus for vibrographic measurements. The acoustic stimulus source is controlled such that when the scanning subsystem dwells on an imaging line selected for vibrography measurements, the acoustic stimulus is generated over a plurality of A-scans and the phase of the acoustic stimulus is locked to the A-scan trigger, such that the phase of the acoustic stimulus is incrementally modified with each A-scan. The accumulation of the acoustic phase is therefore synchronized to the A-scan trigger. The synchronization, providing synchronized acoustic phase evolution during each acoustic phase waveform cycle, permits the use of the OCT vibrography system for simultaneous anatomical and functional imaging.Type: GrantFiled: July 24, 2020Date of Patent: December 7, 2021Assignee: AUDIOPTICS MEDICAL INCORPORATEDInventors: Robert Adamson, Daniel MacDougall, Manohar Bance, Jeremy Brown
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Publication number: 20210263151Abstract: Encoded transmit signals are provided to an ultrasound array such diverging ultrasound waves are sequentially transmitted. Each diverging ultrasound wave is generated by a respective set of encoded transmit signals, where each set of encoded transmit signals is encoded by a respective row of an N×N invertible orthogonal matrix. Only a selected subset of M rows, with N<M, is employed to encode the transmit signals. Sets of receive signals detected in response to the transmitted diverging ultrasound waves are decoded via a transposed matrix generated based on the invertible orthogonal matrix, with each set of decoded receive signals being associated with insonification via a subset of the ultrasound array elements in the fixed aperture. Synthetic aperture beamforming is performed on the decoded receive signals to generate an ultrasound image.Type: ApplicationFiled: April 24, 2019Publication date: August 26, 2021Applicant: Dalhouse UniversityInventors: Christopher SAMSON, Jeremy BROWN, Katherine LATHAM, Robert ADAMSON
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Publication number: 20210007605Abstract: Systems and methods are provided for performing OCT vibrography based on the synchronization of components of the OCT vibrography system. An A-scan trigger is employed to synchronize the operation of the scanning subsystem that scans the sample beam and an acoustic stimulus source that generates an acoustic stimulus for vibrographic measurements. The acoustic stimulus source is controlled such that when the scanning subsystem dwells on an imaging line selected for vibrography measurements, the acoustic stimulus is generated over a plurality of A-scans and the phase of the acoustic stimulus is locked to the A-scan trigger, such that the phase of the acoustic stimulus is incrementally modified with each A-scan. The accumulation of the acoustic phase is therefore synchronized to the A-scan trigger. The synchronization, providing synchronized acoustic phase evolution during each acoustic phase waveform cycle, permits the use of the OCT vibrography system for simultaneous anatomical and functional imaging.Type: ApplicationFiled: July 24, 2020Publication date: January 14, 2021Inventors: Robert Adamson, Daniel Macdougall, Manohar Bance, Jeremy Brown
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Publication number: 20200315499Abstract: Acoustic immittance and other characteristics of ears may be determined by measuring eardrum displacements resulting from application of pressure to the eardrum. For example, optical coherence tomography may be applied to monitor eardrum displacements responsive to a sound. The pressure corresponding to the sound is measured by a suitable instrument such as a microphone. The measured displacements and pressures may be processed to obtain a measure of immitance.Type: ApplicationFiled: October 4, 2018Publication date: October 8, 2020Inventors: Robert ADAMSON, Daniel Ryan MACDOUGALL
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Patent number: 10729327Abstract: Systems and methods are provided for performing OCT vibrography based on the synchronization of components of the OCT vibrography system. An A-scan trigger is employed to synchronize the operation of the scanning subsystem that scans the sample beam and an acoustic stimulus source that generates an acoustic stimulus for vibrographic measurements. The acoustic stimulus source is controlled such that when the scanning subsystem dwells on an imaging line selected for vibrography measurements, the acoustic stimulus is generated over a plurality of A-scans and the phase of the acoustic stimulus is locked to the A-scan trigger, such that the phase of the acoustic stimulus is incrementally modified with each A-scan. The accumulation of the acoustic phase is therefore synchronized to the A-scan trigger. The synchronization, providing synchronized acoustic phase evolution during each acoustic phase waveform cycle, permits the use of the OCT vibrography system for simultaneous anatomical and functional imaging.Type: GrantFiled: October 14, 2016Date of Patent: August 4, 2020Assignee: AUDIOPTICS MEDICAL INCORPORATEDInventors: Robert Adamson, Daniel Macdougall, Manohar Bance, Jeremy Brown
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Patent number: 10687738Abstract: Systems and methods are provided for performing phase-sensitive optical coherence tomographic (PS-OCT) measurements involving the vibrographic response of an acoustic stimulus. Detected signals are processed to provide sampled time-dependent vibrographic data characterizing a vibratory amplitude and phase response over one or more periods of the acoustic stimulus. The sampled time-dependent vibrographic data is processed to suppress the sinusoidal signal component associated with the acoustic stimulus, thereby providing a residual data associated with noise. The residual data is processed to obtain an estimate of the motion noise, and the motion noise is subtracted from the sampled time-dependent vibrographic data in order to provide noise-corrected vibrographic data. The noise-corrected vibrographic data can be processed to obtain one or more vibrographic measures and/or one or more images.Type: GrantFiled: February 22, 2018Date of Patent: June 23, 2020Assignee: AUDIOPTICS MEDICAL INCORPORATEDInventors: Daniel MacDougall, Robert Adamson
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Publication number: 20200060583Abstract: Systems and methods are provided for performing phase-sensitive optical coherence tomographic (PS-OCT) measurements involving the vibrographic response of an acoustic stimulus. Detected signals are processed to provide sampled time-dependent vibrographic data characterizing a vibratory amplitude and phase response over one or more periods of the acoustic stimulus. The sampled time-dependent vibrographic data is processed to suppress the sinusoidal signal component associated with the acoustic stimulus, thereby providing a residual data associated with noise. The residual data is processed to obtain an estimate of the motion noise, and the motion noise is subtracted from the sampled time-dependent vibrographic data in order to provide noise-corrected vibrographic data. The noise-corrected vibrographic data can be processed to obtain one or more vibrographic measures and/or one or more images.Type: ApplicationFiled: February 22, 2018Publication date: February 27, 2020Inventors: DANIEL MACDOUGALL, ROBERT ADAMSON
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Publication number: 20180256031Abstract: Systems and methods are provided for performing OCT vibrography based on the synchronization of components of the OCT vibrography system. An A-scan trigger is employed to synchronize the operation of the scanning subsystem that scans the sample beam and an acoustic stimulus source that generates an acoustic stimulus for vibrographic measurements. The acoustic stimulus source is controlled such that when the scanning subsystem dwells on an imaging line selected for vibrography measurements, the acoustic stimulus is generated over a plurality of A-scans and the phase of the acoustic stimulus is locked to the A-scan trigger, such that the phase of the acoustic stimulus is incrementally modified with each A-scan. The accumulation of the acoustic phase is therefore synchronized to the A-scan trigger. The synchronization, providing synchronized acoustic phase evolution during each acoustic phase waveform cycle, permits the use of the OCT vibrography system for simultaneous anatomical and functional imaging.Type: ApplicationFiled: October 14, 2016Publication date: September 13, 2018Inventors: Robert ADAMSON, Daniel MACDOUGALL, Manohar BANCE, Jeremy BROWN
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Publication number: 20180101974Abstract: The system includes a photo editor that applies text to photos. The editor enables entering any text onto a photo or image. The text is then enhanced by selecting a custom font, text color, stroke color, gradient color, opacity, alignment, pattern, shadow, glow, underline, container graphic, spacing, bold, italics, line spacing, skew, path, rotation and size. The text enhancements, including the selected font, are stored in a typelet enhancement file for hosting and distribution over networks such as the internet. The typelet files are downloaded and processed by the same photo editor. The enhancement files may be saved permanently on the device or loaded for temporary use. The photo editor also installs or exposes the embedded custom font to the operating system and then applies the other enhancements for the purpose of adding any text to a photo using the characteristics of the typelet file.Type: ApplicationFiled: December 11, 2017Publication date: April 12, 2018Inventor: Robert Adamson, III
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Patent number: 9730676Abstract: High-frequency ultrasound imaging can be performed with greater quality and suppressed grating lobes by using methods and systems for effectively reducing the temporal length of transmit grating lobe signals in received ultrasound echoes. Systems and methods are provided for improved high-frequency ultrasound imaging. In various aspects, the method of shortening the time domain of grating lobe signals comprises splitting an array of N transmit elements into K sub-apertures. In further aspects, the grating lobes are suppressed by performing signal processing of the shortened grating lobe signals. In certain aspects, the signal processing method comprises weighting the samples by a calculated phase coherence factor.Type: GrantFiled: May 14, 2015Date of Patent: August 15, 2017Assignee: DALHOUSIE UNIVERSITYInventors: Jeremy Brown, Robert Adamson, Zahra Torbatian, Manohar Bance
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Publication number: 20150366542Abstract: High-frequency ultrasound imaging can be performed with greater quality and suppressed grating lobes by using methods and systems for effectively reducing the temporal length of transmit grating lobe signals in received ultrasound echoes. Systems and methods are provided for improved high-frequency ultrasound imaging. In various aspects, the method of shortening the time domain of grating lobe signals comprises splitting an array of N transmit elements into K sub-apertures. In further aspects, the grating lobes are suppressed by performing signal processing of the shortened grating lobe signals. In certain aspects, the signal processing method comprises weighting the samples by a calculated phase coherence factor.Type: ApplicationFiled: May 14, 2015Publication date: December 24, 2015Inventors: Jeremy Brown, Robert Adamson, Zahra Torbatian, Manohar Bance
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Publication number: 20150332493Abstract: The system includes a photo editor that applies text to photos. The editor enables entering any text onto a photo or image. The text is then enhanced by selecting a custom font, text color, stroke color, gradient color, opacity, alignment, pattern, shadow, glow, underline, container graphic, spacing, bold, italics, line spacing, skew, path, rotation and size. The text enhancements, including the selected font, are stored in a typelet enhancement file for hosting and distribution over networks such as the internet. The typelet files are downloaded and processed by the same photo editor. The enhancement files may be saved permanently on the device or loaded for temporary use. The photo editor also installs or exposes the embedded custom font to the operating system and then applies the other enhancements for the purpose of adding any text to a photo using the characteristics of the typelet file.Type: ApplicationFiled: May 15, 2015Publication date: November 19, 2015Inventor: Robert Adamson, III
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Patent number: 9033888Abstract: High-frequency ultrasound imaging can be performed with greater quality and suppressed grating lobes by using methods and systems for effectively reducing the temporal length of transmit grating lobe signals in received ultrasound echoes. Systems and methods are provided for improved high-frequency ultrasound imaging. In various aspects, the method of shortening the time domain of grating lobe signals comprises splitting an array of N transmit elements into K sub-apertures. In further aspects, the grating lobes are suppressed by performing signal processing of the shortened grating lobe signals. In certain aspects, the signal processing method comprises weighting the samples by a calculated phase coherence factor.Type: GrantFiled: February 8, 2011Date of Patent: May 19, 2015Assignee: DALHOUSIE UNIVERSITYInventors: Jeremy Brown, Robert Adamson, Zahra Torbatian, Manohar Bance
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Publication number: 20120296215Abstract: High-frequency ultrasound imaging can be performed with greater quality and suppressed grating lobes by using methods and systems for effectively reducing the temporal length of transmit grating lobe signals in received ultrasound echoes. Systems and methods are provided for improved high-frequency ultrasound imaging. In various aspects, the method of shortening the time domain of grating lobe signals comprises splitting an array of N transmit elements into K sub-apertures. In further aspects, the grating lobes are suppressed by performing signal processing of the shortened grating lobe signals. In certain aspects, the signal processing method comprises weighting the samples by a calculated phase coherence factor.Type: ApplicationFiled: February 8, 2011Publication date: November 22, 2012Applicant: DALHOUSIE UNIVERSITYInventors: Jeremy Brown, Robert Adamson, Zahra Torbatian, Manohar Bance
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Publication number: 20070055934Abstract: When a browsing computer navigates to a network document, such as a web page, the corresponding server also downloads computer readable formatting information necessary for the operating system of the browsing computer to render non-standard characters within the network document. An installation module is also downloaded to the browsing computer. The installation module is loaded onto the browsing computer which in turn either permanently installs or temporarily exposes the operating system of the browsing computer to the computer readable formatting information. As a result, the operating system of the browsing computer is able to display the network document including the non-standard characters.Type: ApplicationFiled: May 30, 2006Publication date: March 8, 2007Inventor: Robert Adamson
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Patent number: 6879429Abstract: Small mechanical devices fabricated from semiconductor substrates called micro-electromechanical systems (MEMS) are used in the telecommunications industry for various purposes, such as switching and attenuation. Typically a small mirror or arm is moved into or out of the optical path of a beam of light to redirect of attenuate the signal. The present invention relates to a drive circuit for a MEMS device that converts a low voltage source into a higher more useful voltage pulse. The present invention also relates to an optically powered MEMS device utilizing the aforementioned drive circuit. Moreover, the drive circuit according to the present invention can be used to generate a single exponentially decaying pulse that can both generate an actuation force and a braking force for the MEMS device.Type: GrantFiled: May 14, 2003Date of Patent: April 12, 2005Assignee: JDS Uniphase Inc.Inventors: John Douglas Evan Wong, Robert Adamson, Doug Burbidge, Valeri Klepikov
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Publication number: 20040027638Abstract: Small mechanical devices fabricated from semiconductor substrates called micro-electromechanical systems (MEMS) are used in the telecommunications industry for various purposes, such as switching and attenuation. Typically a small mirror or arm is moved into or out of the optical path of a beam of light to redirect of attenuate the signal. The present invention relates to a drive circuit for a MEMS device that converts a low voltage source into a higher more useful voltage pulse. The present invention also relates to an optically powered MEMS device utilizing the aforementioned drive circuit. Moreover, the drive circuit according to the present invention can be used to generate a single exponentially decaying pulse that can both generate an actuation force and a braking force for the MEMS device.Type: ApplicationFiled: May 14, 2003Publication date: February 12, 2004Inventors: John Douglas Evan Wong, Robert Adamson, Doug Burbidge, Valeri Klepikov
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Publication number: 20030064951Abstract: Methods are provided for producing highly purified compositions of nucleic acids by using tangential flow ultrafiltration. A scaleable process for producing pharmaceutical grade plasmid DNA, useful for gene therapy, is provided, which is efficient and avoids the use of toxic organic chemicals.Type: ApplicationFiled: May 7, 2002Publication date: April 3, 2003Applicant: Valentis, Inc.Inventors: Lee B. Bussey, Robert Adamson, Alan Atchley
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Patent number: 6081198Abstract: A method of sending a communication signal. The method includes the step of using a pulse density modulated signal in an electric fence. The method is particularly useful for communication on an electric fence wiring system. The complete signal can be formed from the sum of a number of transmissions from a responder to a receiver over a period defined by a number of pulses from an electric fence energizer coupled to the electric fence wiring system.Type: GrantFiled: May 1, 1998Date of Patent: June 27, 2000Assignee: Tru-Test LimitedInventors: Paul Robert Adamson, Ross Richard Nilson, John Reginald Spray