Patents by Inventor Leon D. Hesch

Leon D. Hesch 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: 4979190
    Abstract: Data can be accurately transmitted between two subsystems even if the clock skew between the two subsystems is larger than one clock cycle by the method of the invention. In one embodiment data is loaded into N state devices in the sending subsystem while the receiver recovers data from the sending state devices in rotation with an N input multiplexer. Another embodiment forwards a clock signal from the sending subsystem along with a data vector of N state signals for recovery by a pair of state devices capturing data on the rising and falling edges of the forwarded clock. A further embodiment achieves double bandwidth by forwarding two clock signals.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: December 18, 1990
    Assignee: Digital Equipment Corporation
    Inventors: David J. Sager, Leon D. Hesch, Andrew D. Ingraham, William A. Samaras
  • Patent number: 4811364
    Abstract: Data can be accurately transmitted between two subsystems even if the clock skew between the two subsystems is larger than one clock cycle by the method of the invention. In one embodiment data is loaded into N state devices in the sending subsystem while the receiver recovers data from the sending state devices in rotation with an N input multiplexer. Another embodiment forwards a clock signal from the sending subsystem along with a data vector of N state signals for recovery by a pair of state devices capturing data on the rising and falling edges of the forwarded clock. A further embodiment achieves double bandwidth by forwarding two clock signals.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: March 7, 1989
    Assignee: Digital Equipment Corporation
    Inventors: David J. Sager, Leon D. Hesch, Andrew D. Ingraham, William A. Samaras