Patents by Inventor Darrell Tinker
Darrell Tinker 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: 11393446Abstract: A method and apparatus for acoustic noise cancellation (“ANC”) in an audio headset. A combination of an analog feedforward path and at least one digital feedforward path enables the ANC facility to operate with the shorter delay inherent in analog electronics, but with the capability of better cancellation of reflections that digital feedforward allows.Type: GrantFiled: January 3, 2021Date of Patent: July 19, 2022Assignee: Tempo Semiconductor, Inc.Inventor: Darrell Tinker
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Publication number: 20210210065Abstract: A method and apparatus for acoustic noise cancellation (“ANC”) in an audio headset. A combination of an analog feedforward path and at least one digital feedforward path enables the ANC facility to operate with the shorter delay inherent in analog electronics, but with the capability of better cancellation of reflections that digital feedforward allows.Type: ApplicationFiled: January 3, 2021Publication date: July 8, 2021Inventor: Darrell Tinker
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Publication number: 20190332355Abstract: A method and apparatus for use in a multiply-accumulate (“MAC”) facility to pre-round a result.Type: ApplicationFiled: May 29, 2018Publication date: October 31, 2019Inventor: Darrell Tinker
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Patent number: 8102959Abstract: A digital audio processing system includes an input to receive a phase component of a signal. The digital audio processing system includes symbol recognition logic to adjust a sample of the phase component using an offset value. The symbol recognition logic maps the adjusted sample to a nearest predetermined phase value of a plurality of predetermined phase values. The symbol recognition logic determines a symbol using a difference between the nearest predetermined phase value and a prior nearest predetermined phase value. The prior nearest predetermined phase value corresponds to a prior sample of the phase component of the signal. The offset value is based on a detected error of the prior sample of the phase component of the signal. The digital audio processing system also includes an output to provide a second signal that indicates the symbol.Type: GrantFiled: April 22, 2011Date of Patent: January 24, 2012Assignee: Sigmatel, Inc.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Publication number: 20110194661Abstract: A digital audio processing system includes an input to receive a phase component of a signal. The digital audio processing system includes symbol recognition logic to adjust a sample of the phase component using an offset value. The symbol recognition logic maps the adjusted sample to a nearest predetermined phase value of a plurality of predetermined phase values. The symbol recognition logic determines a symbol using a difference between the nearest predetermined phase value and a prior nearest predetermined phase value. The prior nearest predetermined phase value corresponds to a prior sample of the phase component of the signal. The offset value is based on a detected error of the prior sample of the phase component of the signal. The digital audio processing system also includes an output to provide a second signal that indicates the symbol.Type: ApplicationFiled: April 22, 2011Publication date: August 11, 2011Applicant: SIGMATEL, INC.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Patent number: 7953196Abstract: A method includes receiving first data corresponding to a first signal sampled at a first sample rate, decimating the first data to provide a second signal sampled at a second sample rate, and recovering a pilot signal from the second signal. The method also includes evaluating the pilot signal to determine an error value, where the error value is based on a comparison of a sample of the pilot signal to zero. The method also includes adjusting the second sample rate based on the error value.Type: GrantFiled: September 30, 2010Date of Patent: May 31, 2011Assignee: Sigmatel, Inc.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Publication number: 20110022649Abstract: A method includes receiving first data corresponding to a first signal sampled at a first sample rate, decimating the first data to provide a second signal sampled at a second sample rate, and recovering a pilot signal from the second signal. The method also includes evaluating the pilot signal to determine an error value, where the error value is based on a comparison of a sample of the pilot signal to zero. The method also includes adjusting the second sample rate based on the error value.Type: ApplicationFiled: September 30, 2010Publication date: January 27, 2011Applicant: SIGMATEL, INC.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Patent number: 7831001Abstract: A digital audio processing system and method is disclosed. In an embodiment, the digital audio processing system can include a phase detector to sample an input signal and provide an output to adjust a decimation rate of an input signal. In another embodiment, the digital audio processing system can include symbol recognition logic to determine a symbol using a difference between a nearest predetermined phase value to a sample and a nearest predetermined phase value to a prior sample.Type: GrantFiled: December 19, 2006Date of Patent: November 9, 2010Assignee: Sigmatel, Inc.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Patent number: 7792220Abstract: A demodulator system and method is disclosed. In an embodiment, the demodulator system can include a Coordinate Rotation Digital Computer (CORDIC) mixer to mix a first signal substantially to baseband using a first input frequency and to mix a second signal substantially to baseband using a second input frequency. In another embodiment, the demodulator system can include a phase detector to receive a pilot signal and to generate a control signal to adjust a decimation rate based on the pilot signal. In another embodiment, the demodulator system can include a symbol decoder to determine a symbol from a phase signal.Type: GrantFiled: December 19, 2006Date of Patent: September 7, 2010Assignee: Sigmatel, Inc.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Publication number: 20080144743Abstract: A demodulator system and method is disclosed. In an embodiment, the demodulator system can include a Coordinate Rotation Digital Computer (CORDIC) mixer to mix a first signal substantially to baseband using a first input frequency and to mix a second signal substantially to baseband using a second input frequency. In another embodiment, the demodulator system can include a phase detector to receive a pilot signal and to generate a control signal to adjust a decimation rate based on the pilot signal. In another embodiment, the demodulator system can include a symbol decoder to determine a symbol from a phase signal.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Applicant: SIGMATEL, INC.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Publication number: 20080147762Abstract: A digital audio processing system and method is disclosed. In an embodiment, the digital audio processing system can include a phase detector to sample an input signal and provide an output to adjust a decimation rate of an input signal. In another embodiment, the digital audio processing system can include symbol recognition logic to determine a symbol using a difference between a nearest predetermined phase value to a sample and a nearest predetermined phase value to a prior sample.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Applicant: SIGMATEL, INC.Inventors: Jeffrey Donald Alderson, Darrell Tinker, K. Gozie Ifesinachukwu
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Publication number: 20070223640Abstract: A system and method for determining a clock rate of a digital phase lock loop is disclosed. The system includes a first input to receive a first clock signal, an output to provide a second clock signal, and a dividerless initial clock rate determination module to calculate an initial clock rate value based on an reciprocal of a pulse length of the first clock signal. In a particular embodiment, the dividerless initial clock rate determination module performs a piecewise linear operation to calculate the initial clock rate value.Type: ApplicationFiled: March 22, 2006Publication date: September 27, 2007Applicant: SigmaTel, Inc.Inventor: Darrell Tinker
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Publication number: 20070200642Abstract: A system and method for using one or more clock signals is disclosed. The system includes a clock translator that has a first input to receive a first reference clock signal and a second input to receive a second reference clock signal. The clock translator also includes an output to provide a bit rate clock signal having a clock frequency in a first ratio with respect to the frequency of the first reference clock but having a resolution based on at least a portion of the second reference clock signal. The second reference clock has a faster rate than the first reference clock.Type: ApplicationFiled: February 16, 2006Publication date: August 30, 2007Applicant: SigmaTel, Inc.Inventor: Darrell Tinker
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Publication number: 20070192392Abstract: A system and method for decimating a digital signal is disclosed. The system includes an input to receive digital data, a control input to receive a desired decimation rate, and an integrator stage responsive to the input. The system also includes a variable rate down sampling module responsive to the integrator stage and a differentiator stage responsive to the variable rate down sampling module. The down sampling module has a decimation rate that is dynamically adjustable based on the desired decimation rate.Type: ApplicationFiled: February 16, 2006Publication date: August 16, 2007Applicant: Sigma Tel, Inc.Inventor: Darrell Tinker