Patents by Inventor Thomas Lindsay
Thomas Lindsay 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: 20210338957Abstract: A respiratory mask assembly includes a frame having a channel and a cushioning element including a clip portion adapted for interference seal and retention in the channel. The cushioning element includes an interfacing portion constructed from foam and having a wider width than the clip portion.Type: ApplicationFiled: July 16, 2021Publication date: November 4, 2021Inventors: Lee James VELISS, Renee Frances DOHERTY, Scott Alexander HOWARD, Alicia Kristianne WELLS, Fiona Catherine CARROLL, David Mark GILLIVER, Brett Thomas LINDSAY
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Patent number: 11077277Abstract: A respiratory mask assembly includes a frame having a channel and a cushioning element including a clip portion adapted for interference seal and removable retention in the channel. The cushioning element includes an interfacing portion constructed from foam and adapted to contact the patient's face in use. The interfacing portion may have a wider width than the clip portion.Type: GrantFiled: May 23, 2018Date of Patent: August 3, 2021Assignee: RESMED PTY LTDInventors: Lee James Veliss, Renee Frances Doherty, Scott Alexander Howard, Alicia Kristianne Wells, Fiona Catherine Carroll, David Mark Gilliver, Brett Thomas Lindsay
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Publication number: 20180264217Abstract: A respiratory mask assembly includes a frame having a channel and a cushioning element including a clip portion adapted for interference seal and retention in the channel. The cushioning element includes an interfacing portion constructed from foam and having a wider width than the clip portion.Type: ApplicationFiled: May 23, 2018Publication date: September 20, 2018Inventors: Lee James VELISS, Renee Frances DOHERTY, Scott Alexander HOWARD, Alicia Kristianne WELLS, Fiona Catherine CARROLL, David Mark GILLIVER, Brett Thomas LINDSAY
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Patent number: 9987450Abstract: A respiratory mask assembly includes a frame having a channel and a cushioning element including a clip portion adapted for interference seal and retention in the channel. The cushioning element includes an interfacing portion constructed from foam and having a wider width than the clip portion.Type: GrantFiled: March 4, 2009Date of Patent: June 5, 2018Assignee: ResMed LimitedInventors: Lee James Veliss, Renee Frances Doherty, Scott Alexander Howard, Alicia Kristianne Wells, Fiona Catherine Carroll, David Mark Gilliver, Brett Thomas Lindsay
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Patent number: 9136942Abstract: A receiver for a communications link includes a receiver module and a host receiver. These two components can be tested independently. In one embodiment, the receiver module is characterized with respect to noise and distortion. The noise performance can be determined by comparing input and output signals of the receiver module, to determine the relative noise of the receiver module. The distortion performance can be determined by comparing the distortion of input and output signals of the receiver module, using a reference host receiver that includes an equalizer. The host receiver can be tested by using a reference receiver module.Type: GrantFiled: July 29, 2013Date of Patent: September 15, 2015Assignee: ClariPhy Communications, Inc.Inventors: Thomas A. Lindsay, Norman L. Swenson, Paul Voois
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Patent number: 9077572Abstract: A receiver applies a calibration method to compensate for skew between input channels. The receiver skew is estimated by observing the coefficients of an adaptive equalizer which adjusts the coefficients based on time-varying properties of the multi-channel input signal. The receiver skew is compensated by programming the phase of the sampling clocks for the different channels. Furthermore, during real-time operation of the receiver, channel diagnostics is performed to automatically estimate differential group delay and/or other channel characteristics based on the equalizer coefficients using a frequency averaging or polarization averaging approach. Framer information can furthermore be utilized to estimate differential group delay that is an integer multiple of the symbol rate. Additionally, a DSP reset may be performed when substantial signal degradation is detected based on the channel diagnostics information.Type: GrantFiled: January 17, 2013Date of Patent: July 7, 2015Assignee: ClariPhy Communications, Inc.Inventors: Mario Rafael Hueda, Alfredo Taddei, Diego Ernesto Crivelli, Hugo Santiago Carrer, Oscar Ernesto Agazzi, Norman L. Swenson, Thomas A. Lindsay, Jinwoo Cho, Daniel Tauber
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Patent number: 8929747Abstract: A transmitter reduces or minimizes pulse narrowing. In one approach, an optical transmitter is designed to transmit data over an optical fiber at a specified data rate using on-off keying. The transmitter includes a pre-converter electrical channel and a limiting E/O converter. The pre-converter electrical channel produces a pre-converter signal that drives the limiting E/O converter. The pre-converter electrical channel is designed to reduce pulse narrowing in the pre-converter signal. In one implementation, the pre-converter electrical channel includes a pre-emphasis filter that is designed to minimize pulse width shrinkage.Type: GrantFiled: July 23, 2012Date of Patent: January 6, 2015Assignee: ClariPhy Communications, Inc.Inventor: Thomas A. Lindsay
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Publication number: 20140186027Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: ApplicationFiled: December 19, 2013Publication date: July 3, 2014Applicant: CLARIPHY COMMUNICATIONS, INC.Inventor: Thomas A. Lindsay
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Publication number: 20140161440Abstract: A receiver for a communications link includes a receiver module and a host receiver. These two components can be tested independently. In one embodiment, the receiver module is characterized with respect to noise and distortion. The noise performance can be determined by comparing input and output signals of the receiver module, to determine the relative noise of the receiver module. The distortion performance can be determined by comparing the distortion of input and output signals of the receiver module, using a reference host receiver that includes an equalizer. The host receiver can be tested by using a reference receiver module.Type: ApplicationFiled: July 29, 2013Publication date: June 12, 2014Applicant: ClariPhy Communications, Inc.Inventors: Thomas A. Lindsay, Norman L. Swenson, Paul Voois
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Patent number: 8639112Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: GrantFiled: February 6, 2012Date of Patent: January 28, 2014Assignee: ClariPhy Communications, Inc.Inventor: Thomas A. Lindsay
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Patent number: 8254781Abstract: A receiver for a communications link includes a receiver module and a host receiver. These two components can be tested independently. In one embodiment, the receiver module is characterized with respect to noise and distortion. The noise performance can be determined by comparing input and output signals of the receiver module, to determine the relative noise of the receiver module. The distortion performance can be determined by comparing the distortion of input and output signals of the receiver module, using a reference host receiver that includes an equalizer. The host receiver can be tested by using a reference receiver module.Type: GrantFiled: April 27, 2009Date of Patent: August 28, 2012Assignee: ClariPhy Communications, Inc.Inventors: Thomas A. Lindsay, Norman L. Swenson, Paul Voois
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Publication number: 20120189300Abstract: A receiver for a communications link includes a receiver module and a host receiver. These two components can be tested independently. In one embodiment, the receiver module is characterized with respect to noise and distortion. The noise performance can be determined by comparing input and output signals of the receiver module, to determine the relative noise of the receiver module. The distortion performance can be determined by comparing the distortion of input and output signals of the receiver module, using a reference host receiver that includes an equalizer. The host receiver can be tested by using a reference receiver module.Type: ApplicationFiled: April 27, 2009Publication date: July 26, 2012Applicant: ClariPhy Communications, Inc.Inventors: Thomas A. Lindsay, Norman L. Swenson, Paul Voois
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Patent number: 8229303Abstract: A transmitter reduces or minimizes pulse narrowing. In one approach, an optical transmitter is designed to transmit data over an optical fiber at a specified data rate using on-off keying. The transmitter includes a pre-converter electrical channel and a limiting E/O converter. The pre-converter electrical channel produces a pre-converter signal that drives the limiting E/O converter. The pre-converter electrical channel is designed to reduce pulse narrowing in the pre-converter signal. In one implementation, the pre-converter electrical channel includes a pre-emphasis filter that is designed to minimize pulse width shrinkage.Type: GrantFiled: August 7, 2007Date of Patent: July 24, 2012Assignee: ClariPhy Communications, Inc.Inventor: Thomas A. Lindsay
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Publication number: 20120134665Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: ApplicationFiled: February 6, 2012Publication date: May 31, 2012Applicant: CLARIPHY COMMUNICATIONS, INC.Inventor: Thomas A. Lindsay
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Patent number: 8111986Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: GrantFiled: April 27, 2009Date of Patent: February 7, 2012Assignee: ClariPhy Communications, Inc.Inventor: Thomas A. Lindsay
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Publication number: 20110211846Abstract: Frequency peaking is used in the transmitter to improve link performance. In one example, frequency peaking improves the PIED or TWDP. The frequency peaking can result in pulse shapes that have more electrical energy in the receiver (and therefore higher received SNR) than uncompensated pulses. In addition, due to the response of typical fibers, boosting the high frequencies typically will flatten the received spectrum, which will improve the performance of the equalizer in an EDC receiver.Type: ApplicationFiled: December 13, 2010Publication date: September 1, 2011Applicant: CLARIPHY COMMUNICATIONS, INC.Inventors: Thomas A. Lindsay, Norman L. Swenson
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Patent number: 8009981Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: GrantFiled: January 4, 2010Date of Patent: August 30, 2011Assignee: ClariPhy Communications, Inc.Inventors: Norman L. Swenson, Paul Voois, Thomas A. Lindsay, Steve C. Zeng
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Publication number: 20100326445Abstract: A respiratory mask assembly includes a frame having a channel and a cushioning element including a clip portion adapted for interference seal and retention in the channel. The cushioning element includes an interfacing portion constructed from foam and having a wider width than the clip portion.Type: ApplicationFiled: March 4, 2009Publication date: December 30, 2010Applicant: ResMed LimitedInventors: Lee James Veliss, Renee Frances Doherty, Scott Alexander Howard, Alicia Kristianne Wells, Fiona Catherine Carroll, David Mark Gilliver, Brett Thomas Lindsay
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Patent number: 7853149Abstract: Frequency peaking is used in the transmitter to improve link performance. In one example, frequency peaking improves the PIED or TWDP. The frequency peaking can result in pulse shapes that have more electrical energy in the receiver (and therefore higher received SNR) than uncompensated pulses. In addition, due to the response of typical fibers, boosting the high frequencies typically will flatten the received spectrum, which will improve the performance of the equalizer in an EDC receiver.Type: GrantFiled: March 7, 2006Date of Patent: December 14, 2010Assignee: ClariPhy Communications, Inc.Inventors: Thomas A. Lindsay, Norman L. Swenson
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Publication number: 20100103839Abstract: A transmitter for a communications link is tested by using a (software) simulation of a reference channel and/or a reference receiver to test the transmitter. In one embodiment for optical fiber communications links, a data test pattern is applied to the transmitter under test and the resulting optical output is captured, for example by a sampling oscilloscope. The captured waveform is subsequently processed by the software simulation, in order to simulate propagation of the optical signal through the reference channel and/or reference receiver. A performance metric for the transmitter is calculated based on the processed waveform.Type: ApplicationFiled: January 4, 2010Publication date: April 29, 2010Applicant: CLARIPHY COMMUNICATIONS, INC.Inventors: Norman L. Swenson, Paul Voois, Thomas A. Lindsay, Steve C. Zeng