Patents by Inventor Mark Hryszko
Mark Hryszko 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: 7733422Abstract: An apparatus, for use in a receiver configured to receive electronic signals, for identifying digital signals that are available for reception, includes a timing recovery device configured to receive an incoming signal, related to a transmitted signal, the incoming signal having a first symbol rate, and to re-sample the incoming signal to provide a second symbol rate, and an analyzer that is in communication with the timing recovery device and that is configured to make a determination as to whether a difference between the second symbol rate and a third symbol rate of a transmitter providing the transmitted signal is within an acceptable tolerance and to use the determination in an analysis of whether the transmitted signal is available for reception.Type: GrantFiled: August 10, 2009Date of Patent: June 8, 2010Assignee: ATI Technologies, Inc.Inventors: Rajan Aggarwal, Mark Hryszko, Samuel H. Reichgott, Punyabrata Ray, Stephen L. Biracree, Binning Chen, Raul A. Casas
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Publication number: 20090295995Abstract: An apparatus, for use in a receiver configured to receive electronic signals, for identifying digital signals that are available for reception, includes a timing recovery device configured to receive an incoming signal, related to a transmitted signal, the incoming signal having a first symbol rate, and to re-sample the incoming signal to provide a second symbol rate, and an analyzer that is in communication with the timing recovery device and that is configured to make a determination as to whether a difference between the second symbol rate and a third symbol rate of a transmitter providing the transmitted signal is within an acceptable tolerance and to use the determination in an analysis of whether the transmitted signal is available for reception.Type: ApplicationFiled: August 10, 2009Publication date: December 3, 2009Applicant: ATI Technologies, Inc.Inventors: Rajan Aggarwal, Mark Hryszko, Samuel H. Reichgott, Punyabrata Ray, Stephen L. Biracree, Binning Chen, Raul A. Casas
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Patent number: 7573531Abstract: An apparatus, for use in a receiver configured to receive electronic signals, for identifying digital signals that are available for reception, includes a timing recovery device configured to receive an incoming signal, related to a transmitted signal, the incoming signal having a first symbol rate, and to re-sample the incoming signal to provide a second symbol rate, and an analyzer that is in communication with the timing recovery device and that is configured to make a determination as to whether a difference between the second symbol rate and a third symbol rate of a transmitter providing the transmitted signal is within an acceptable tolerance and to use the determination in an analysis of whether the transmitted signal is available for reception.Type: GrantFiled: October 14, 2005Date of Patent: August 11, 2009Assignee: ATI Technologies, Inc.Inventors: Rajan Aggarwal, Mark Hryszko, Samuel H. Reichgott, Punyabrata Ray, Stephen L. Biracree, Binning Chen, Raul A. Casas
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Publication number: 20080123787Abstract: The present invention is directed to a method and system for detecting and compensating for signal impairments in modulated signals. Phase noise and gain noise based signal impairments can be detected as a function of the difference between the optimal position in the constellation grid (the center) and the actual position in the constellation grid of a received symbol. As symbols are received, they are compared to optimal positions and a measure of the phase noise and gain noise can be determined for each symbol. Over a period of time, the detector can compute an average measure of phase noise and gain noise. When the average measure of phase noise and/or gain noise reaches a predefined threshold, the detector can indicate a phase noise based and/or gain noise based signal impairment has been detected to the receiver. The receiver can adjust one or more receive parameters in order to improve reception.Type: ApplicationFiled: November 29, 2007Publication date: May 29, 2008Inventors: Supat Wongwirawat, Mark Hryszko, Devan Namboodiri, Raul A. Casas
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Publication number: 20080123786Abstract: The present invention is directed to a method and system for detecting and compensating for signal impairments in modulated signals. Phase noise and gain noise based signal impairments can be detected as a function of the difference between the optimal position in the constellation grid (the center) and the actual position in the constellation grid of a received symbol. As symbols are received, they are compared to optimal positions and a measure of the phase noise and gain noise can be determined for each symbol. Over a period of time, the detector can compute an average measure of phase noise and gain noise. When the average measure of phase noise and/or gain noise reaches a predefined threshold, the detector can indicate a phase noise based and/or gain noise based signal impairment has been detected to the receiver. The receiver can adjust one or more receive parameters in order to improve reception.Type: ApplicationFiled: November 29, 2007Publication date: May 29, 2008Inventors: Supat Wongwirawat, Mark Hryszko, Devan Namboodiri, Raul A. Casas
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Publication number: 20080123788Abstract: The present invention is directed to a method and system for detecting and compensating for signal impairments in modulated signals. Phase noise and gain noise based signal impairments can be detected as a function of the difference between the optimal position in the constellation grid (the center) and the actual position in the constellation grid of a received symbol. As symbols are received, they are compared to optimal positions and a measure of the phase noise and gain noise can be determined for each symbol. Over a period of time, the detector can compute an average measure of phase noise and gain noise. When the average measure of phase noise and/or gain noise reaches a predefined threshold, the detector can indicate a phase noise based and/or gain noise based signal impairment has been detected to the receiver. The receiver can adjust one or more receive parameters in order to improve reception.Type: ApplicationFiled: November 29, 2007Publication date: May 29, 2008Inventors: Supat Wongwirawat, Mark Hryszko, Devan Namboodiri, Raul A. Casas
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Patent number: 7342981Abstract: A digital receiver, that may be used to receive VSB/QAM digital television signals, includes an adaptive fine carrier recovery circuit that compensates for deviations in the carrier frequency or phase. The carrier recovery circuit de-rotates a signal including phase errors. Estimations of phase errors are filtered using a filter whose gain and bandwidth are adjusted adaptively. This allows the carrier recovery circuit to track phase/frequency offset without introducing significant jitter. In one embodiment, the receiver includes a DFE, and the adaptive carrier recovery circuit mitigates instability that might be associated with the DFE.Type: GrantFiled: January 15, 2004Date of Patent: March 11, 2008Assignee: ATI Technologies Inc.Inventors: Supat Wongwirawat, Azzedine Touzni, Mark Hryszko, Raul A. Casas, Yiwen Yu
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Publication number: 20070183452Abstract: An apparatus, configured to receive from a receiver a multiplexed data stream of multiplexed video data packets, the multiplexed data stream being produced from multiple input video streams received by the receiver. The apparatus includes a point-of-deployment (POD) module controller configured to use a POD module to decrypt the multiplexed data stream and a demultiplexor connected to the decryption module and configured to demultiplex the multiplexed data stream such that the video data packets are grouped in respective output video data streams, the demultiplexor being further configured to use timing information associated with the multiplexed data stream such that packets in the output video data streams have time spacings in accordance with the timing information.Type: ApplicationFiled: February 3, 2006Publication date: August 9, 2007Inventors: Mark Hryszko, Raul Casas, Samir Hulyalkar
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Publication number: 20050157820Abstract: A digital receiver, that may be used to receive VSB/QAM digital television signals, includes an adaptive fine carrier recovery circuit that compensates for deviations in the carrier frequency or phase. The carrier recovery circuit de-rotates a signal including phase errors. Estimations of phase errors are filtered using a filter whose gain and bandwidth are adjusted adaptively. This allows the carrier recovery circuit to track phase/frequency offset without introducing significant jitter. In one embodiment, the receiver includes a DFE, and the adaptive carrier recovery circuit mitigates instability that might be associated with the DFE.Type: ApplicationFiled: January 15, 2004Publication date: July 21, 2005Inventors: Supat Wongwirawat, Azzedine Touzni, Mark Hryszko, Raul Casas, Yiwen Yu