Patents by Inventor Mark W. Lee

Mark W. Lee 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 networked access control
    Patent number: 6157952
    Abstract: An access control device controller and method of operation are provided which provide in a first aspect of the invention, a novel way in which to set controller network addresses providing a visually perceivable digital readout to assist installers in setting the correct address, in a second aspect of the invention, automatic configuration of end of line termination resistors, line biasing resistors and earth ground connection to the network medium shield, in a third aspect of the invention, automatic configuration of a controller/host computer data communications link, in a fourth aspect of the invention, a novel method and apparatus for monitoring ambient RF noise levels, and in a fifth aspect of the invention, a novel method of detecting environmental conditions likely to lead to a system failure.
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: December 5, 2000
    Assignee: Keri Systems, Inc.
    Inventors: Kenneth J. Geiszler, Mark W. Lee, Robert D. Kohler