Patents by Inventor Jared LeVan Zerbe

Jared LeVan Zerbe 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).

  • Method and apparatus for fail-safe resynchronization with minimum latency
    Patent number: 6473439
    Abstract: A method and circuit for achieving minimum latency data transfer between two mesochronous (same frequency, different phase) clock domains is disclosed. This circuit supports arbitrary phase relationships between two clock domains and is tolerant of temperature and voltage shifts after initialization while maintaining the same output data latency. In one embodiment, this circuit is used on a bus-system to re-time data from receive-domain, clocks to transmit-domain clocks. In such a system the phase relationships between these two clocks is set by the device bus location and thus is not precisely known. By supporting arbitrary phase resynchronization, this disclosure allows for theoretically infinite bus-length and thus no limitation on device count, as well as arbitrary placement of devices along the bus. This ultimately allows support of multiple latency-domains for very long buses.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: October 29, 2002
    Assignee: Rambus Incorporated
    Inventors: Jared LeVan Zerbe, Michael Tak-kei Ching, Abhijit M. Abhyankar, Richard M. Barth, Andy Peng-Pui Chan, Paul G. Davis, William F. Stonecypher
  • Output driver circuit with well-controlled output impedance
    Patent number: 6448813
    Abstract: An output driver circuit for driving a signal onto a signal line. The output driver circuit comprises at least one driver circuit and a passive network. The passive network is configured to limit the variation in the output impedance of the output driver circuit. The output driver circuit thus provides an output impedance that closely matches the loaded impedance of the signal line at all times so as to minimize secondary reflections on the signal line.
    Type: Grant
    Filed: March 6, 2001
    Date of Patent: September 10, 2002
    Assignee: Rambus Inc.
    Inventors: Bruno Werner Garlepp, Kevin S. Donnelly, Jared LeVan Zerbe
  • Output driver circuit with well-controlled output impedance
    Publication number: 20010035768
    Abstract: An output driver circuit for driving a signal onto a signal line. The output driver circuit comprises at least one driver circuit and a passive network. The passive network is configured to limit the variation in the output impedance of the output driver circuit. The output driver circuit thus provides an output impedance that closely matches the loaded impedance of the signal line at all times so as to minimize secondary reflections on the signal line.
    Type: Application
    Filed: March 6, 2001
    Publication date: November 1, 2001
    Applicant: Rambus Inc.
    Inventors: Bruno Werner Garlepp, Kevin S. Donnelly, Jared LeVan Zerbe
  • Output driver circuit with well-controlled output impedance
    Patent number: 6198307
    Abstract: An output driver circuit for driving a signal onto a signal line. The output driver circuit comprises at least one driver circuit and a passive network. The passive network is configured to limit the variation in the output impedance of the output driver circuit. The output driver circuit thus provides an output impedance that closely matches the loaded impedance of the signal line at all times so as to minimize secondary reflections on the signal line.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: March 6, 2001
    Assignee: Rambus Inc.
    Inventors: Bruno Werner Garlepp, Kevin S. Donnelly, Jared LeVan Zerbe