Patents by Inventor Wolf Johnson

Wolf Johnson 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).

  • System and process for simulating the behavioral effects of timing violations between unrelated clocks
    Patent number: 10366186
    Abstract: According to one aspect, embodiments of the invention provide a CDC simulation system comprising a timing analysis module configured to receive a circuit design, analyze the circuit design to identify at least one CDC, and generate a report including information related to the at least one CDC, a CDC simulation module configured to communicate with the timing analysis module and to receive the report from the timing analysis module, and a test bench module configured to communicate with the CDC simulation module, to receive the circuit design, and to operate a test bench code to simulate the operation of the circuit design, wherein the CDC simulation module is further configured to edit a top level of the test bench code, based on the received report, such that the test bench module is configured to identify timing violations in the circuit design due to the at least one CDC.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: July 30, 2019
    Assignee: THE CHARLES STARK DRAPER LABORATORY, INC.
    Inventors: Eric Karl Mautner, Wolf Johnson
  • Digital simultaneous transmit and receive communication system
    Patent number: 9985772
    Abstract: In a simultaneous transmit and receive (STAR) communication system, an RF signal splitter couples an antenna to an RF transmitter and to an RF receiver, without using a circulator. An adaptive cancellation RF waveform generator generates an adaptive cancellation RF signal to cancel cross-talk from the RF transmitter to the RF receiver. Training signals are used to characterize signal paths within the STAR system and calculate filter coefficients for generating the adaptive cancellation signal.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: May 29, 2018
    Assignee: The Charles Stark Draper Laboratory, Inc.
    Inventors: Wolf Johnson, Matthew C. Muresan, Robert D. Tingley
  • SYSTEM AND PROCESS FOR SIMULATING THE BEHAVIORAL EFFECTS OF TIMING VIOLATIONS BETWEEN UNRELATED CLOCKS
    Publication number: 20170091361
    Abstract: According to one aspect, embodiments of the invention provide a CDC simulation system comprising a timing analysis module configured to receive a circuit design, analyze the circuit design to identify at least one CDC, and generate a report including information related to the at least one CDC, a CDC simulation module configured to communicate with the timing analysis module and to receive the report from the timing analysis module, and a test bench module configured to communicate with the CDC simulation module, to receive the circuit design, and to operate a test bench code to simulate the operation of the circuit design, wherein the CDC simulation module is further configured to edit a top level of the test bench code, based on the received report, such that the test bench module is configured to identify timing violations in the circuit design due to the at least one CDC.
    Type: Application
    Filed: September 26, 2016
    Publication date: March 30, 2017
    Inventors: Eric Karl Mautner, Wolf Johnson