Patents by Inventor Mehdi Katoozi
Mehdi Katoozi 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: 9444480Abstract: An analog-to-digital converter (ADC) includes at least first thru third ADC slices configured to sample input signal and transmit first thru third digitally converted values thereof, at least one reference ADC slice configured to sample input signal and transmit a digitally converted reference value, first thru third and reference registers coupled to first thru third and reference ADC slices, respectively, a delay register having an input and output, and configured to produce a sample time adjustment signal, where the sample time adjustment signal facilitates adjustment of a phase of a next time sampling of the input signal by the second ADC slice, and a plurality of computational circuit elements coupled to the input, output, and the registers, and configured to determine values of an error, an approximate time derivative of the input signal estimated from the third, second and first sampled time point, and the sample time adjustment signal.Type: GrantFiled: February 25, 2016Date of Patent: September 13, 2016Assignee: The Boeing CompanyInventors: Alfio Zanchi, Mehdi Katoozi
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Patent number: 8676335Abstract: An apparatus comprises a transceiver configured to communicate wirelessly with an IMD and a processor communicatively coupled to the transceiver. The processor is configured to detect an error in a data unit received from the IMD, transmit a series of synchronization signals during an uninterrupted communication sequence, and receive, for each synchronization signal, a new data unit and the number of requested duplicate data units from the IMD. Each synchronization signal includes an echo code, wherein the echo code corresponds to a request for a number of duplicate data units to be sent in response to detecting the error in the data unit received during said uninterrupted communication sequence. The number of duplicate data units corresponds to a value of the echo code, and a duplicate data unit corresponds to a data unit previously transmitted by the IMD during said uninterrupted communication sequence.Type: GrantFiled: October 24, 2008Date of Patent: March 18, 2014Assignee: Cardiac Pacemakers, Inc.Inventors: Mehdi Katoozi, Kenneth F. Cowan, Thomas M. Bocek, Mark Rutzer, Scott Vanderlinde, Prashant Rawat
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Patent number: 8433420Abstract: A telemetry system for data transmission between an implantable medical device and an external system includes a plurality of channels each representing a frequency band within a predetermined frequency range. The data transmission is performed using at least one active channel at any instant. Channel hopping is performed upon detecting an interruption of communication, such that a scan is performed through an array of channels selected from the plurality of channels. If a data frame is not successfully transmitted, it is repeatedly re-transmitted using the current and/or the next active channels until its transmission becomes successful.Type: GrantFiled: October 18, 2011Date of Patent: April 30, 2013Assignee: Cardiac Pacemakers, Inc.Inventors: Joseph E. Bange, Earle Roberts, Kenneth F. Cowan, Mehdi Katoozi
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Publication number: 20120065697Abstract: A telemetry system for data transmission between an implantable medical device and an external system includes a plurality of channels each representing a frequency band within a predetermined frequency range. The data transmission is performed using at least one active channel at any instant. Channel hopping is performed upon detecting an interruption of communication, such that a scan is performed through an array of channels selected from the plurality of channels. If a data frame is not successfully transmitted, it is repeatedly re-transmitted using the current and/or the next active channels until its transmission becomes successful.Type: ApplicationFiled: October 18, 2011Publication date: March 15, 2012Inventors: Joseph E. Bange, Earle Roberts, Kenneth F. Cowan, Mehdi Katoozi
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Patent number: 8046079Abstract: A telemetry system for data transmission between an implantable medical device and an external system includes a plurality of channels each representing a frequency band within a predetermined frequency range. The data transmission is performed using at least one active channel at any instant. Channel hopping is performed upon detecting an interruption of communication, such that a scan is performed through an array of channels selected from the plurality of channels. If a data frame is not successfully transmitted, it is repeatedly re-transmitted using the current and/or the next active channels until its transmission becomes successful.Type: GrantFiled: March 13, 2007Date of Patent: October 25, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Joseph E. Bange, Earle Roberts, Kenneth F. Cowan, Mehdi Katoozi
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Patent number: 8041032Abstract: A method, apparatus, and system of encryption, including embedding reconfiguration information within a ciphertext block destined for a decryptor. The decryptor identifies the reconfiguration information, extracts such information, and uses it to alter a pre-cipher, which is used for decryption. The encryptor alters its pre-cipher synchronously with the decryptor.Type: GrantFiled: August 19, 2005Date of Patent: October 18, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Mehdi Katoozi, George D. Jelatis
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Patent number: 7881802Abstract: The selection of one communication channel from a plurality of available channels is determined by a state machine. In an automatic selection mode, a first telemetry system has priority over other telemetry systems. A communication session is in progress based on session initiation and termination triggers. An override function allows manual selection of a telemetry system.Type: GrantFiled: August 9, 2004Date of Patent: February 1, 2011Assignee: Cardiac Pacemakers, Inc.Inventors: Sylvia Quiles, Scott Vanderlinde, Ken Cowan, Mehdi Katoozi, Krishna Sridharan, Allan T. Koshiol, Thomas J. Harris
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Publication number: 20090048646Abstract: This document discloses, among other things, a telemetry system for requesting and receiving redundant data. A synchronization frame transmitted by an external device includes an echo code. The implantable device responds to the synchronization frame by sending real time data and echo data selected as a function of the echo code.Type: ApplicationFiled: October 24, 2008Publication date: February 19, 2009Applicant: Cardiac Pacemakers, Inc.Inventors: Mehdi Katoozi, Ken Cowan, Thm Bocek, Mark Rutzer, Scott Vanderlinde, Prashant Rawat
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Patent number: 7457669Abstract: This document discloses, among other things, a telemetry system for requesting and receiving redundant data. A synchronization frame transmitted by an external device includes an echo code. The implantable device responds to the synchronization frame by sending real time data and echo data selected as a function of the echo code.Type: GrantFiled: June 17, 2004Date of Patent: November 25, 2008Assignee: Cardiac Pacemakers, Inc.Inventors: Mehdi Katoozi, Ken Cowan, Tom Bocek, Mark Rutzer, Scott Vanderlinde, Prashant Rawat
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Publication number: 20080228237Abstract: A telemetry system for data transmission between an implantable medical device and an external system includes a plurality of channels each representing a frequency band within a predetermined frequency range. The data transmission is performed using at least one active channel at any instant. Channel hopping is performed upon detecting an interruption of communication, such that a scan is performed through an array of channels selected from the plurality of channels. If a data frame is not successfully transmitted, it is repeatedly re-transmitted using the current and/or the next active channels until its transmission becomes successful.Type: ApplicationFiled: March 13, 2007Publication date: September 18, 2008Applicant: CARDIAC PACEMAKERS, INC.Inventors: Joseph E. Bange, Earle Roberts, Kenneth F. Cowan, Mehdi Katoozi
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Publication number: 20070053516Abstract: A method, apparatus, and system of encryption, including embedding reconfiguration information within a ciphertext block destined for a decryptor. The decryptor identifies the reconfiguration information, extracts such information, and uses it to alter a pre-cipher, which is used for decryption. The encryptor alters its pre-cipher synchronously with the decryptor.Type: ApplicationFiled: August 19, 2005Publication date: March 8, 2007Inventors: Mehdi Katoozi, George Jelatis
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Publication number: 20060030902Abstract: The selection of one communication channel from a plurality of available channels is determined by a state machine. In an automatic selection mode, a first telemetry system has priority over other telemetry systems. A communication session is in progress based on session initiation and termination triggers. An override function allows manual selection of a telemetry system.Type: ApplicationFiled: August 9, 2004Publication date: February 9, 2006Inventors: Sylvia Quiles, Scott Vanderlinde, Ken Cowan, Mehdi Katoozi, Krishna Sridharan, Allan Koshiol, Thomas Harris
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Publication number: 20050283209Abstract: This document discloses, among other things, a telemetry system for requesting and receiving redundant data. A synchronization frame transmitted by an external device includes an echo code. The implantable device responds to the synchronization frame by sending real time data and echo data selected as a function of the echo code.Type: ApplicationFiled: June 17, 2004Publication date: December 22, 2005Inventors: Mehdi Katoozi, Ken Cowan, Tom Bocek, Mark Rutzer, Scott Vanderlinde, Prashant Rawat
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Patent number: 5594631Abstract: A control for a pulse width modulated power supply. The control (14) uses a digital pulse width modulator (48, 48') to produce set and reset signals that determine the duration of control pulses supplied to the pulse width modulated power supply (12). In one embodiment, a plurality of analog-to-digital converters (50, 51, 53) convert analog signals indicative of different parameters monitored on the pulse width modulated power supply to digital values. Differences between the digital values and corresponding predefined desired reference values are determined, combined, and the result is input to a digital comparator (72) of the digital pulse width modulator. The digital comparator produces a reset signal when the combined differences equal a count of clock pulses accumulated on a counter (76). A second digital comparator compares the count to a predefined count and produces a set signal when the two digital values are equal.Type: GrantFiled: April 20, 1994Date of Patent: January 14, 1997Assignee: The Boeing CompanyInventors: Mehdi Katoozi, George S. La Rue
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Patent number: 5515383Abstract: A built-in self-test system and method for use in testing an integrated circuit. An integrated circuit (200) includes a self-test generator (210) that produces pseudo-random test vectors, each having fewer bits than a normal input signal applied to the integrated circuit. The normal signal comprises data and parity bits that are applied to a plurality of error detection and correction (EDAC) circuits (50) on the integrated circuit. Selected bits of the pseudo-random test vectors generated by the self-test generator are fanned out to provide the total number of bits of the data and parity signals, and a test signature is produced after a full set of test vectors have been processed by the EDAC. A signature analyzer (222) compares the test signature with a predetermined expected signature to determine if a fault has occurred in one of the EDACs in the integrated circuit. The self test can be made upon demand, or alternatively, can be run pseudo-concurrently with the normal mode, using cycle stealing.Type: GrantFiled: May 28, 1991Date of Patent: May 7, 1996Assignee: The Boeing CompanyInventor: Mehdi Katoozi
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Patent number: 5144230Abstract: A system for performing a self test on a circuit without interrupting its normal function. Several embodiments of a self-test system (10, 60, 80, 100, 120) are disclosed, each of which include a test generator (22) that generates a test signal selectively applied to a circuit under test (CUT) (12, 122). The CUT produces an output signal that is analyzed to determine whether the circuit is operating properly. In several of the embodiments, a signature analyzer (44) compares the signature of the output signal to a predetermined expected signature after a sequence of test vectors have been performed on the CUT. In a fault-tolerant embodiment of the self-test system (100), a plurality of CUTs are evaluated in respect to the output signal produced thereby, both when operating to process a normal input signal and, when processing a test signal.Type: GrantFiled: November 26, 1990Date of Patent: September 1, 1992Assignee: The Boeing CompanyInventors: Mehdi Katoozi, George S. LaRue