Patents by Inventor Marc P. Roy

Marc P. Roy 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: 5008569
    Abstract: Programmable logic array, multiplexer and memory array circuits utilizing the dynamic CMOS logic of the invention are capable of operating at speeds approximating twice that of similar circuits utilizing conventional dynamic CMOs logic. The circuit of the invention has an AND plane defined by a series of input columns and a series of rows, and has an OR plane defined by the series of rows and one or more output columns. Transistors are connected selectively between the input columns and the rows, and between the output columns and the rows. During one state of an external clock input to the circuit, each of a series of inputs are placed on a respective one of the input columns, each of the output columns are precharged, and each of the rows is discharged. The shifting of the external clock input to the alternate state results in latching of the values on the input columns and in termination of the output column precharging and row discharging.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: April 16, 1991
    Assignee: Northern Telecom Limited
    Inventor: Marc P. Roy