Patents by Inventor Hamid Sheikhzadeh Nadjar
Hamid Sheikhzadeh Nadjar 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: 8659579Abstract: A bending wave touch system includes at least one sensor and a touchscreen controller. The at least one sensor is coupled to a substrate and is responsive to vibrations in the substrate. The at least one sensor outputs signals. The controller receives the signals from the at least one sensor and identifies touch coordinates based on high frequency components of the signals when a touch on the substrate includes at least one of a tap, a drag and a lift-off. The controller identifies a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.Type: GrantFiled: May 14, 2010Date of Patent: February 25, 2014Assignees: Elo Touch Solutions, Inc., Semiconductor Components Industries, LLCInventors: Hamid Sheikhzadeh Nadjar, Joe Henry Babb, Robert L. Brennan, Steven W. Haungs, James R. Wynne, Jr., Joel C. Kent
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Patent number: 8280065Abstract: A method and system for active noise cancellation is provided. The system employs subband processing, and preferably implements over-sampled filterbank. The system is applicable to adaptive noise cancellation, adaptive echo cancellation for portable listening devices, such as headsets and other similar listening devices.Type: GrantFiled: July 1, 2005Date of Patent: October 2, 2012Assignee: Semiconductor Components Industries, LLCInventors: Hamid Sheikhzadeh Nadjar, Todd Schneider, Robert L. Brennan
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Patent number: 8137269Abstract: A method and system for managing physiological systems is provided. The physiological system management (PSM) system includes one or more signal acquisition blocks to collect physiological information. The PSM system includes oversampled filterbanks for transferring one or more input signal related to the physiological information into subband signals, and a subband processing scheme for processing the outputs from the oversampled filterbanks for event detection in one or more physiological systems. The PSM system includes an adaptive controller which decides on the proper control measure and delivers the measure to the one or more physiological systems.Type: GrantFiled: March 15, 2007Date of Patent: March 20, 2012Assignee: On Semiconductor Trading Ltd.Inventors: Hamid Sheikhzadeh-Nadjar, Robert L. Brennan, Michael Rice
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Patent number: 7953230Abstract: A method and system for processing of physiological signals is provided. The system processes information signals in subband-domain associated with the physiological signals in time-domain. The information signals are obtained by one or more over-sampled filterbanks. The method and system possibly synthesizes the subband signals obtained by subband processing. The method and system may implement the analysis, subband processing, and synthesis algorithms on over-sampled filterbanks, which are implemented on ultra low-power, small size, and low-cost platform in real-time. The method and system may use over-sampled, Weighted-Overlap Add (WOLA) filterbanks.Type: GrantFiled: July 1, 2005Date of Patent: May 31, 2011Assignee: On Semiconductor Trading Ltd.Inventors: Hamid Sheikhzadeh Nadjar, Robert L. Brennan, Julie Johnson, Etienne Cornu
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Publication number: 20110025649Abstract: A bending wave touch system includes at least one sensor and a touchscreen controller. The at least one sensor is coupled to a substrate and is responsive to vibrations in the substrate. The at least one sensor outputs signals. The controller receives the signals from the at least one sensor and identifies touch coordinates based on high frequency components of the signals when a touch on the substrate includes at least one of a tap, a drag and a lift-off. The controller identifies a status of a hold condition of the touch based on at least two different time averages of low frequency components of the signals.Type: ApplicationFiled: May 14, 2010Publication date: February 3, 2011Inventors: Hamid Sheikhzadeh Nadjar, Joe Henry Babb, Robert L. Brennan, Steven W. Haungs, James R. Wynne, JR., Joel C. Kent
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Patent number: 7783032Abstract: A method and system for processing subband signals using adaptive filters is provided. The system is implemented on an oversampled WOLA filterbank. Inputs signals are oversampled. The system includes an adaptive filter for each subband, and the functionality of improving the convergence properties of the adaptive filter. For example, the convergence property is improved by whitening the spectra of the oversampled subband signals and/or affine projection algorithm. The system is applicable to echo and/or noise cancellation. Adaptive step size control, adaptation process control using Double-Talk detector may be implemented. The system may further implement a non-adaptive processing for reducing uncorrelated noise and/or cross-talk resistant adaptive noise cancellation.Type: GrantFiled: August 18, 2003Date of Patent: August 24, 2010Assignee: Semiconductor Components Industries, LLCInventors: Hamid Reza Abutalebi, Robert L. Brennan, Hamid Sheikhzadeh-Nadjar, Dequn Sun
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Patent number: 7359520Abstract: A directional signal processing system for beamforming information signals. The system includes an oversampled filterbank, which has an analysis filterbank for transforming the information signals in time domain into channel signals in transform domain, a synthesis filterbank and a signal processor. The signal processor processes the outputs of the analysis filterbank for beamforming the information signals. The synthesis filterbank transforms the outputs of the signal processor to a single information signal in time domain.Type: GrantFiled: August 7, 2002Date of Patent: April 15, 2008Assignee: DSPFactory Ltd.Inventors: Robert L. Brennan, Edward Chau, Hamid Sheikhzadeh Nadjar, Todd Schneider
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Publication number: 20070265508Abstract: A method and system for managing physiological systems is provided. The physiological system management (PSM) system includes one or more signal acquisition blocks to collect physiological information. The PSM system includes oversampled filterbanks for transferring one or more input signal related to the physiological information into subband signals, and a subband processing scheme for processing the outputs from the oversampled filterbanks for event detection in one or more physiological systems. The PSM system includes an adaptive controller which decides on the proper control measure and delivers the measure to the one or more physiological systems.Type: ApplicationFiled: March 15, 2007Publication date: November 15, 2007Applicant: Emma Mixed Signal C.V.Inventors: Hamid Sheikhzadeh-Nadjar, Robert Brennan, Michael Rice
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Patent number: 7139707Abstract: Method and system for real-time speech recognition is provided. The speech algorithm runs on a platform having an input-output processor and a plurality of processor units. The processor units operate substantially in parallel or sequentially to perform feature extraction and pattern matching. While the input-output processor creates a frame, the processor units execute the feature extraction and the pattern matching. Shared memory is provided for supporting the parallel operation.Type: GrantFiled: October 22, 2002Date of Patent: November 21, 2006Assignee: AMI Semiconductors, Inc.Inventors: Hamid Sheikhzadeh-Nadjar, Etienne Cornu, Robert L. Brennan, Nicolas Destrez, Alain Dufaux
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Patent number: 7120584Abstract: A method and system for synthesizing audio speech is provided. A synthesis engine receives from a host, compressed and normalized speech units and prosodic information. The synthesis engine decompresses data and synthesizes audio signals. The synthesis engine can be implemented on a digital signal processing system which can meet requirements of low resources (i.e. low power consumption, lower memory usage), such as a DSP system including an input/output module, a WOLA filterbank and a DSP core that operate in parallel.Type: GrantFiled: October 22, 2002Date of Patent: October 10, 2006Assignee: AMI Semiconductor, Inc.Inventors: Hamid Sheikhzadeh-Nadjar, Etienne Cornu, Robert L. Brennan
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Patent number: 7110554Abstract: An adaptive signal processing system for improving a quality of a signal. The system includes an analysis filterbank for transforming a primary information signal in time domain into oversampled sub-band primary signals in frequency domain and an analysis filterbank for transforming a reference signal in time domain into oversampled sub-band reference signals. Sub-band processing circuits process the signals output from the filterbanks to improve a quality of an output signal. A synthesis filterbank can combine the outputs of the sub-band processing circuits to generate the output signal.Type: GrantFiled: August 7, 2002Date of Patent: September 19, 2006Assignee: AMI Semiconductor, Inc.Inventors: Robert L. Brennan, King Tam, Hamid Sheikhzadeh Nadjar, Todd Schneider, David Hermann
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Publication number: 20040071284Abstract: A method and system for processing subband signals using adaptive filters is provided. The system is implemented on an oversampled WOLA filterbank. Inputs signals are oversampled. The system includes an adaptive filter for each subband, and the functionality of improving the convergence properties of the adaptive filter. For example, the convergence property is improved by whitening the spectra of the oversampled subband signals and/or affine projection algorithm. The system is applicable to echo and/or noise cancellation. Adaptive step size control, adaptation process control using Double-Talk detector may be implemented. The system may further implement a non-adaptive processing for reducing uncorrelated noise and/or cross-talk resistant adaptive noise cancellation.Type: ApplicationFiled: August 18, 2003Publication date: April 15, 2004Inventors: Hamid Reza Abutalebi, Robert L. Brennan, Hamid Sheikhzadeh-Nadjar, Dequn Sun
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Publication number: 20030130848Abstract: A method and system for synthesizing audio speech is provided. A synthesis engine receives from a host, compressed and normalized speech units and prosodic information. The synthesis engine decompresses data and synthesizes audio signals. The synthesis engine can be implemented on a digital signal processing system which can meet requirements of low resources (i.e. low power consumption, lower memory usage), such as a DSP system including an input/output module, a WOLA filterbank and a DSP core that operate in parallel.Type: ApplicationFiled: October 22, 2002Publication date: July 10, 2003Inventors: Hamid Sheikhzadeh-Nadjar, Etienne Cornu, Robert L. Brennan
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Publication number: 20030110033Abstract: Method and system for real-time speech recognition is provided. The speech algorithm runs on a platform having an input-output processor and a plurality of processor units. The processor units operate substantially in parallel or sequentially to perform feature extraction and pattern matching. While the input-output processor creates a frame, the processor units execute the feature extraction and the pattern matching. Shared memory is provided for supporting the parallel operation.Type: ApplicationFiled: October 22, 2002Publication date: June 12, 2003Inventors: Hamid Sheikhzadeh-Nadjar, Etienne Cornu, Robert L. Brennan, Nicolas Destrez, Alain Dufaux
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Publication number: 20030108214Abstract: An adaptive signal processing system for improving a quality of a signal. The system includes an analysis filterbank for transforming a primary information signal in time domain into oversampled sub-band primary signals in frequency domain and an analysis filterbank for transforming a reference signal in time domain into oversampled sub-band reference signals. Sub-band processing circuits process the signals output from the filterbanks to improve a quality of an output signal. A synthesis filterbank can combine the outputs of the sub-band processing circuits to generate the output signal.Type: ApplicationFiled: August 7, 2002Publication date: June 12, 2003Inventors: Robert L. Brennan, King Tam, Hamid Sheikhzadeh Nadjar, Todd Schneider, David Hermann
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Publication number: 20030063759Abstract: A directional signal processing system for beamforming information signals. The system includes an oversampled filterbank, which has an analysis filterbank for transforming the information signals in time domain into channel signals in transform domain, a synthesis filterbank and a signal processor. The signal processor processes the outputs of the analysis filterbank for beamforming the information signals. The synthesis filterbank transforms the outputs of the signal processor to a single information signal in time domain.Type: ApplicationFiled: August 7, 2002Publication date: April 3, 2003Inventors: Robert L. Brennan, Edward Chau, Hamid Sheikhzadeh Nadjar, Todd Schneider