Patents by Inventor Edwin L. Hudson

Edwin L. Hudson 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: 5101117
    Abstract: A system for synchronizing the operation of a CPU and coprocessor operating from a common clock signal includes a first voltage controlled delay line connected to receive the clock signal and delay it by a fixed time interval before supplying it to one of the CPU or coprocessor. A second voltage controlled delay line is connected to receive the clock signal and delay it by an adjustable time interval before supplying it to the other of the CPU or coprocessor. The time interval of the second delay line is determined by the potential of a control signal generated from a phase locked loop circuit coupled to the output terminals of the CPU and coprocessor.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: March 31, 1992
    Assignee: MIPS Computer Systems
    Inventors: Mark G. Johnson, Edwin L. Hudson
  • Patent number: 5027270
    Abstract: A processor controlled interface between a processor, instruction cache, and main memory provides for simultaneously refilling the cache with an instruction block from main memory and processing the instructions in the block while they are being written to the cache.
    Type: Grant
    Filed: October 11, 1988
    Date of Patent: June 25, 1991
    Assignee: Mips Computer Systems, Inc.
    Inventors: Thomas J. Riordan, Paul S. Ries, Edwin L. Hudson, Earl A. Killian
  • Patent number: 4437171
    Abstract: CMOS buffers are described which provide compatibility between a CMOS circuit and ECL circuits. The input buffer includes a comparator referenced to the V.sub.BB potential. This potential is developed on the CMOS chip with bipolar transistors integrally formed during the CMOS processing. The output buffer also utilizes a bipolar transistor and includes overshoot protection circuitry to prevent overshooting in the transition on the output line from a high potential to a low potential.
    Type: Grant
    Filed: January 7, 1982
    Date of Patent: March 13, 1984
    Assignee: Intel Corporation
    Inventors: Edwin L. Hudson, Stephen L. Smith