Patents by Inventor MARTIN STEVEN McCORMICK

MARTIN STEVEN McCORMICK 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).

  • Patent number: 9768793
    Abstract: For continuous-time multi-stage noise shaping analog-to-digital converters (CT MASH ADCs), quantization noise cancellation often requires accurate estimation of transfer functions, e.g., a noise transfer function of the front end modulator and a signal transfer function of the back end modulator. To provide quantization noise cancellation, digital quantization noise cancellation filters adaptively tracks transfer function variations due to integrator gain errors, flash-to-DAC timing errors, as well as the inter-stage gain and timing errors. Tracking the transfer functions is performed through the direct cross-correlation between the injected maximum length linear feedback shift registers (LFSR) sequence and modulator outputs and then corrects these non-ideal effects by accurately modeling the transfer functions with programmable finite impulse response (PFIR) filters.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: September 19, 2017
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Qingdong Meng, Hajime Shibata, Richard E. Schreier, Martin Steven McCormick, Yunzhi Dong, Jose Barreiro Silva, Jialin Zhao, Donald W. Paterson, Wenhua W. Yang
  • Publication number: 20170207802
    Abstract: For small cells, transceivers demand high performance while maintaining system efficiency. The present disclosure describes a highly integrated cellular transceiver that offers such features by providing one or more digital functions on-chip, onto the same die in the cellular transceiver. Effectively, the scope and boundary of the cellular transceiver is expanded to move beyond the data converters of the transceiver to include a variety of digital functions, thus integrating more of the signal chain in the cellular transceiver. Integration can greatly reduce complexity for the baseband processing, lower the cost of the overall transceiver system, reduce power consumption, and at the same time, benefit from improvements on the digital functions through integration.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 20, 2017
    Applicant: Analog Devices Global
    Inventors: PATRICK PRATT, Martin Steven McCORMICK
  • Publication number: 20170179969
    Abstract: For continuous-time multi-stage noise shaping analog-to-digital converters (CT MASH ADCs), quantization noise cancellation often requires accurate estimation of transfer functions, e.g., a noise transfer function of the front end modulator and a signal transfer function of the back end modulator. To provide quantization noise cancellation, digital quantization noise cancellation filters adaptively tracks transfer function variations due to integrator gain errors, flash-to-DAC timing errors, as well as the inter-stage gain and timing errors. Tracking the transfer functions is performed through the direct cross-correlation between the injected maximum length linear feedback shift registers (LFSR) sequence and modulator outputs and then corrects these non-ideal effects by accurately modeling the transfer functions with programmable finite impulse response (PFIR) filters.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 22, 2017
    Applicant: ANALOG DEVICES GLOBAL
    Inventors: Qingdong Meng, Hajime Shibata, Richard E. Schreier, Martin Steven McCormick, Yunzhi Dong, Jose Barreiro Silva, Jialin Zhao, Donald W. Paterson, Wenhua W. Yang
  • Patent number: 9641206
    Abstract: For small cells, transceivers demand high performance while maintaining system efficiency. The present disclosure describes a highly integrated cellular transceiver that offers such features by providing one or more digital functions on-chip, onto the same die in the cellular transceiver. Effectively, the scope and boundary of the cellular transceiver is expanded to move beyond the data converters of the transceiver to include a variety of digital functions, thus integrating more of the signal chain in the cellular transceiver. Integration can greatly reduce complexity for the baseband processing, lower the cost of the overall transceiver system, reduce power consumption, and at the same time, benefit from improvements on the digital functions through integration.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: May 2, 2017
    Assignee: ANALOG DEVICES GLOBAL
    Inventors: Patrick Pratt, Martin Steven McCormick
  • Patent number: 9595982
    Abstract: An approach to linearization relaxes the requirements on the digitization of the analog output signal while maintaining the benefits of a high sampling rate of the output signal. The digitization approach extracts sufficient information to characterize the output signal over a wide bandwidth without necessarily determining sufficient information to fully represent the output signal, for example, without sampling the output signal at the Nyquist sampling rate with a sufficient precision to accurately represent the signal.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: March 14, 2017
    Assignee: ANALOG DEVICES, INC.
    Inventors: Theophane Weber, Martin Steven McCormick, Qingdong Meng
  • Publication number: 20160204809
    Abstract: For small cells, transceivers demand high performance while maintaining system efficiency. The present disclosure describes a highly integrated cellular transceiver that offers such features by providing one or more digital functions on-chip, onto the same die in the cellular transceiver. Effectively, the scope and boundary of the cellular transceiver is expanded to move beyond the data converters of the transceiver to include a variety of digital functions, thus integrating more of the signal chain in the cellular transceiver. Integration can greatly reduce complexity for the baseband processing, lower the cost of the overall transceiver system, reduce power consumption, and at the same time, benefit from improvements on the digital functions through integration.
    Type: Application
    Filed: December 18, 2015
    Publication date: July 14, 2016
    Applicant: ANALOG DEVICES GLOBAL
    Inventors: PATRICK PRATT, MARTIN STEVEN McCORMICK
  • Publication number: 20160094253
    Abstract: An approach to linearization relaxes the requirements on the digitization of the analog output signal while maintaining the benefits of a high sampling rate of the output signal. The digitization approach extracts sufficient information to characterize the output signal over a wide bandwidth without necessarily determining sufficient information to fully represent the output signal, for example, without sampling the output signal at the Nyquist sampling rate with a sufficient precision to accurately represent the signal.
    Type: Application
    Filed: May 20, 2014
    Publication date: March 31, 2016
    Applicant: ANALOG DEVICES, INC.
    Inventors: THEOPHANE WEBER, MARTIN STEVEN McCORMICK, QINGDONG MENG