Patents by Inventor FRANCOIS DOUËZY

FRANCOIS DOUËZY 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: 11194943
    Abstract: A hardware emulation system for emulating an integrated circuit design under test (DUT) includes a switch system, FPGAs and serial transmitter and receiver circuitry. The switch system has input and output ports and is configurable to change which ports are connected to each other. The FPGAs are configurable to emulate a functionality of the DUT. The functionality of the DUT is partitioned across multiple FPGAs. The serial transmitter circuitry transmits data from the FPGAs on serial lines to the ports of the switch system. The serial receiver circuitry receives data for the FPGAs on serial lines from the ports of the switch system.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 7, 2021
    Assignee: Synopsys, Inc.
    Inventors: Frédéric Emirian, Francois Douëzy
  • Publication number: 20190179989
    Abstract: A hardware emulation system for emulating an integrated circuit design under test (DUT) includes a switch system, FPGAs and serial transmitter and receiver circuitry. The switch system has input and output ports and is configurable to change which ports are connected to each other. The FPGAs are configurable to emulate a functionality of the DUT. The functionality of the DUT is partitioned across multiple FPGAs. The serial transmitter circuitry transmits data from the FPGAs on serial lines to the ports of the switch system. The serial receiver circuitry receives data for the FPGAs on serial lines from the ports of the switch system.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 13, 2019
    Inventors: Frédéric Emirian, Francois Douëzy
  • Publication number: 20100161306
    Abstract: The method of emulating the design under test associated with a test environment comprises two distinct generating phases comprising a first phase of generating (80) a first file (FCH1) for configuring the test environment, and a second phase of generating (81) a second file (FCH2) for configuring at least a part of the design under test, the delivery of the first configuration file to a first reconfigurable hardware part (BTR) forming a reconfigurable test bench so as to configure the test bench, and the delivery of the second configuration file to a second reconfigurable hardware part (EML) so as to configure an emulator of the design under test, the two hardware parts being distinct and mutually connected.
    Type: Application
    Filed: July 22, 2009
    Publication date: June 24, 2010
    Applicant: EMULATION AND VERIFICATION ENGINEERING
    Inventors: LUC BURGUN, DAVID REYNIER, Sébastien Delerse, Frédéric Emirian, FRANCOIS DOUËZY
  • Patent number: 6934674
    Abstract: A method and apparatus for clock generation and distribution in an emulation system is described. The present invention provides a method and apparatus for generating a derived clock signal with a circuit having a look up table. A counter circuit counts clock cycles and provides an index into the look up table. A frequency divider circuit may be used between the counter circuit and a base clock signal to provide an intermediate clock signal with a frequency that is less than the frequency of the base clock signal. In one embodiment, a selection circuit is provided to select between the base clock signal and an external clock signal.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: August 23, 2005
    Assignee: Mentor Graphics Corporation
    Inventors: Francois Douezy, Frederic Reblewski, Jean Barbier
  • Publication number: 20040111252
    Abstract: The method of emulating the design under test associated with a test environment comprises two distinct generating phases comprising a first phase of generating (80) a first file (FCH1) for configuring the test environment, and a second phase of generating (81) a second file (FCH2) for configuring at least a part of the design under test, the delivery of the first configuration file to a first reconfigurable hardware part (BTR) forming a reconfigurable test bench so as to configure the test bench, and the delivery of the second configuration file to a second reconfigurable hardware part (EML) so as to configure an emulator of the design under test, the two hardware parts being distinct and mutually connected.
    Type: Application
    Filed: June 26, 2003
    Publication date: June 10, 2004
    Applicant: EMULATION AND VERIFICATION ENGINEERING
    Inventors: Luc Burgun, David Reynier, Sebastien Delerse, Frederic Emirian, Francois Douezy