Patents by Inventor Robert P. North

Robert P. North 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: 4339808
    Abstract: A prioritizing circuit is provided for arbitrating between asynchronously occurring memory access request and memory refresh request signals to a dynamic RAM memory module. The circuit includes a latch circuit (20), a latch control circuit (21), and priority logic (22). The latch circuit is responsive to the request signals and latches the state of both signals upon receipt of a strobe signal generated by the latch control circuit. The latch control circuit generates the strobe signal upon detection of the first access request signal transmitted to the latch circuit at a predetermined logic level. To arbitrate priority between request signals occurring substantially simultaneously, the priority logic includes a combinatorial logic network responsive to the outputs of the latch circuit for generating a grant signal corresponding to the request signal having the higher priority.
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: July 13, 1982
    Assignee: Motorola, Inc.
    Inventor: Robert P. North