Patents by Inventor Richard G. Sowell

Richard G. Sowell 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).

  • Memory management in packet data mode systems
    Patent number: 5047927
    Abstract: A memory management system for a packet data mode system is used in conjunction with a direct memory access controller. The management system is of the type for communicating packet data into and out of memory storage. Each message in a packet data mode system contains a control address field and a data field. A change of field signal is generated and communicated to the DMA controller. An end of message signal is generated and communicated to the DMA controller. The control address field is stored separately from the data field. This increases the efficiency of the data storage and enhances the density of information packing into the memory storage.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: September 10, 1991
    Assignee: National Semiconductor Corporation
    Inventors: Richard G. Sowell, Robert Pieters
  • Finite metastable time synchronizer
    Patent number: 4820939
    Abstract: A synchronizer circuit having a predictable and finite metastable time, and thereby a finite sample interval, resulting in the minimization of the probability of errors in asynchronous information transfer.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: April 11, 1989
    Assignee: National Semiconductor Corporation
    Inventors: Richard G. Sowell, Robert Pieters