Patents by Inventor Roy I. Vandermolen

Roy I. Vandermolen 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).

  • Asynchronous-to-synchronous digital data multiplexer/demultiplexer with asynchronous clock regeneration
    Patent number: 4759014
    Abstract: Digital data is received on a plurality of input channels at unrelated, asynchronous input clock rates. The data is multiplexed and transmitted via one or more synchronous parallel channels, together with encoded information related to the original asynchronous input clock rate on each channel. The data received from the synchronous channels is demultiplexed and redistributed to proper output channels and clocked out therefrom at rates derived from the encoded and reconstituted asynchronous clock rate information from each channel.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: July 19, 1988
    Assignee: Ampex Corporation
    Inventors: David G. Decker, Andrew C. Brost, Roy I. Vandermolen