Patents by Inventor Pier Francese

Pier Francese 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: 7948423
    Abstract: A system, apparatus and method for continuous synchronization of multiple ADC circuits is described. The ADC circuits can be arranged in a master-slave configuration within the system so that the converter clock is subdivided into slower speeds for the data output clock or for the control of de-multiplexing the outputs onto a wider bus, while maintaining ADC-to-ADC synchronization resilient to perturbations from noise and other upset sources. The configuration of the ADCs in the master-slave configuration can be varied according to overall system requirements in any one of a sequential configuration, a parallel configuration or a tree type of configuration, as well as others. Digital and/or analog timing adjustments can be made to each of the ADC circuits. The master clocking signals can be generated by a master clock generator circuit, which is either internally implemented in an ADC circuit, or externally implemented as a separate master clock generator circuit.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: May 24, 2011
    Assignee: National Semiconductor Corporation
    Inventors: Robert Callaghan Taft, Heinz Werker, Pier Francese, David Brian Barkin
  • Publication number: 20100201559
    Abstract: A system, apparatus and method for continuous synchronization of multiple ADC circuits is described. The ADC circuits can be arranged in a master-slave configuration within the system so that the converter clock is subdivided into slower speeds for the data output clock or for the control of de-multiplexing the outputs onto a wider bus, while maintaining ADC-to-ADC synchronization resilient to perturbations from noise and other upset sources. The configuration of the ADCs in the master-slave configuration can be varied according to overall system requirements in any one of a sequential configuration, a parallel configuration or a tree type of configuration, as well as others. Digital and/or analog timing adjustments can be made to each of the ADC circuits. The master clocking signals can be generated by a master clock generator circuit, which is either internally implemented in an ADC circuit, or externally implemented as a separate master clock generator circuit.
    Type: Application
    Filed: April 15, 2010
    Publication date: August 12, 2010
    Inventors: Robert Callaghan Taft, Heinz Werker, Pier Francese, David Brian Barkin
  • Patent number: 7728753
    Abstract: A system, apparatus and method for continuous synchronization of multiple ADC circuits is described. The ADC circuits can be arranged in a master-slave configuration within the system so that the converter clock is subdivided into slower speeds for the data output clock or for the control of de-multiplexing the outputs onto a wider bus, while maintaining ADC-to-ADC synchronization resilient to perturbations from noise and other upset sources. The configuration of the ADCs in the master-slave configuration can be varied according to overall system requirements in any one of a sequential configuration, a parallel configuration or a tree type of configuration, as well as others. Digital and/or analog timing adjustments can be made to each of the ADC circuits. The master clocking signals can be generated by a master clock generator circuit, which is either internally implemented in an ADC circuit, or externally implemented as a separate master clock generator circuit.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: June 1, 2010
    Assignee: National Semiconductor Corporation
    Inventors: Robert Callaghan Taft, Heinz Werker, Pier Francese, David Barkin
  • Publication number: 20100090876
    Abstract: A system, apparatus and method for continuous synchronization of multiple ADC circuits is described. The ADC circuits can be arranged in a master-slave configuration within the system so that the converter clock is subdivided into slower speeds for the data output clock or for the control of de-multiplexing the outputs onto a wider bus, while maintaining ADC-to-ADC synchronization resilient to perturbations from noise and other upset sources. The configuration of the ADCs in the master-slave configuration can be varied according to overall system requirements in any one of a sequential configuration, a parallel configuration or a tree type of configuration, as well as others. Digital and/or analog timing adjustments can be made to each of the ADC circuits. The master clocking signals can be generated by a master clock generator circuit, which is either internally implemented in an ADC circuit, or externally implemented as a separate master clock generator circuit.
    Type: Application
    Filed: October 13, 2008
    Publication date: April 15, 2010
    Applicant: National Semiconductor Corporation
    Inventors: Robert Callaghan Taft, Heinz Werker, Pier Francese, David Brian Barkin