Patents by Inventor Michael C. Dorsey

Michael C. Dorsey 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: 6981191
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. A BIST controller comprises a logic built-in self-test (“LBIST”) engine capable of executing a LBIST and storing the results thereof and a multiple input signature register (“MISR”). The LBIST engine includes a LBIST state machine; and a pattern generator seeded with a first primitive polynomial. The MISR is capable of storing the results of an executed LBIST, the contents thereof being stored per a second primitive polynomial. A method for performing a LBIST comprises seeding a pattern generator in a LBIST engine with a first polynomial; executing a LBIST using the contents of the pattern generator; and storing the results of an executed LBIST in a MISR utilizing a second primitive polynomial.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: December 27, 2005
    Assignee: Sun Microsystems, Inc.
    Inventor: Michael C. Dorsey
  • Patent number: 6901543
    Abstract: A logic built-in self-test controller is disclosed. The invention, in its various aspects and embodiments, is a built-in self-test controller capable of performing a logic built-in self-test at a test frequency at least as slow as a slowest frequency of a plurality of timing domains to undergo the logic built-in self-test. A method for performing a built-in self-test on an integrated circuit device.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: May 31, 2005
    Assignee: Sun Microsystems, Inc.
    Inventor: Michael C. Dorsey
  • Publication number: 20040198518
    Abstract: According to the present disclosure, a playyard top rail includes a left rail and a right rail mounted to pivot about a pivot axis relative to the right rail. The playyard top rail further includes a rail lock associated with the left and right rails. The rail lock is configured to lock the right rail to the left rail upon movement of the left and right rails to an in-line erected position and movement of the rail lock in a first direction along the pivot axis to a rail-locking position. Once the rail lock is moved in an opposite second direction along the pivot axis to a rail-releasing position, the left and right rails are free to pivot relative to one another about the pivot axis to assume a side-by-side collapsed position. An extensible cord is coupled at one end to the left rail and at another end to the right rail and supported in the middle on a lock housing containing the rail lock to define a bowed fabric support overlying a portion of the left and right rails.
    Type: Application
    Filed: January 29, 2003
    Publication date: October 7, 2004
    Inventors: Andrew Mendenhall, Michael C. Dorsey, Jason S. Andrews, James M. Kain, Richard Glover
  • Patent number: 6665895
    Abstract: A playyard floor support frame includes a lock hub arranged to lie under a playyard floor, first and second floor support rails arranged to be mounted for movement in rail-receiving channels formed in the lock hub, and a base for receiving and elevating the lock hub above ground underlying the base. The frame further includes a lock controller mounted on the lock hub and configured to move the first and second floor support rails (at the option of a user) toward one another to establish a “locked” position of the frame and away from one another to establish an “unlocked” position of the frame.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: December 23, 2003
    Assignee: Cosco Management, Inc.
    Inventors: William St. Pierre, Michael C. Dorsey, Richard Glover
  • Patent number: 6665912
    Abstract: A web adjuster is provided including a housing, an actuator movably coupled to the housing, and a pincher that releasably retains a web threaded through the housing. The actuator moves the pincher between a first position inhibiting movement of the web relative to the housing and a second position permitting movement of the web relative to the housing.
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: December 23, 2003
    Assignee: Cosco Management, Inc.
    Inventors: Dennis M. Turner, Michael C. Dorsey, Andrew B. Mendenhall, Richad Glover
  • Publication number: 20030188400
    Abstract: A web adjuster is provided including a housing, an actuator movably coupled to the housing, and a pincher that releasably retains a web threaded through the housing. The actuator moves the pincher between a first position inhibiting movement of the web relative to the housing and a second position permitting movement of the web relative to the housing.
    Type: Application
    Filed: April 3, 2002
    Publication date: October 9, 2003
    Inventors: Dennis M. Turner, Michael C. Dorsey, Andrew B. Mendenhall, Richad Glover
  • Publication number: 20030074614
    Abstract: A logic built-in self-test controller is disclosed. The invention, in its various aspects and embodiments, is a built-in self-test controller capable of performing a logic built-in self-test at a test frequency at least as slow as a slowest frequency of a plurality of timing domains to undergo the logic built-in self-test. A method for performing a built-in self-test on an integrated circuit device.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074621
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. A BIST controller comprises a logic built-in self-test (“LBIST”) engine capable of executing a LBIST and storing the results thereof and a multiple input signature register (“MISR”). The LBIST engine includes a LBIST state machine; and a pattern generator seeded with a first primitive polynomial. The MISR is capable of storing the results of an executed LBIST, the contents thereof being stored per a second primitive polynomial. A method for performing a LBIST comprises seeding a pattern generator in a LBIST engine with a first polynomial; executing a LBIST using the contents of the pattern generator; and storing the results of an executed LBIST in a MISR utilizing a second primitive polynomial.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074616
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. More particularly, in a first aspect, the invention includes a BIST comprising a first frequency domain in which LBIST operations are performed; a second frequency domain in which MBIST operations are performed; and a third frequency domain in which a test interface operates. In a second aspect, the invention includes a method for use in performing a BIST. This method comprises receiving an external clock signal in a testing interface, the external clock signal defining a first frequency domain; generating a first internal clock signal, the first internal clock signal defining a second frequency domain in which a LBIST may be performed; and generating a second internal clock signal, the second internal clock signal defining a third frequency domain in which MBIST may be performed.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074617
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. A BIST controller comprises a BIST engine and a register. The BIST engine is capable of executing a built-in self-test and storing the results thereof, wherein the results include an indication of whether an executed built-in self-test is completed. The register is capable of storing the results of the executed built-in self-test, including the indication. A method for performing a built-in self-test comprises performing a BIST, including generating a indication of whether the built-in self-test is completed, and storing the indication.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074618
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. More particularly, in a first aspect, a dual mode BIST controller comprises both a logic built-in self-test (“LBIST”) domain and a memory built-in self-test (“MBIST”) domain. The LBIST domain includes a LBIST engine capable of executing a LBIST and storing the results thereof and a multiple input signature register (“MISR”). The MBIST domain includes a MBIST engine capable of executing a MBIST. In a second aspect, the invention includes a method for performing a BIST on an integrated circuit device. The method comprises externally resetting a dual mode BIST controller; performing at least one of a LBIST and a MBIST from the dual mode BIST controller; and obtaining the results of the performed BIST.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074619
    Abstract: A method and apparatus for performing a built-in self-test (“BIST”) on an integrated circuit device are disclosed. More particularly, in a first aspect, a BIST controller includes a memory built-in self-test (“MBIST”) engine and a MBIST test signature register. The MBIST engine is capable of performing a MBIST and the MBIST signature register is capable of storing the results of the MBIST. In a second aspect, a method for performing a MBIST includes first externally resetting a MBIST engine and a MBIST signature register. Next, the method initiates a plurality of components and signals in a MBIST engine and the MBIST signature register upon receipt of at least one of a MBIST run signal and a MBIST select signal. The contents of a plurality of memory components are then flushed to a known state. The flushed memory components are then tested and the results of the testing are stored in the MBIST signature register.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20030074620
    Abstract: A method and apparatus for performing a memory built-in self-test for an integrated circuit are disclosed. The technique includes a memory built-in self-test controller including a plurality of alternative memory built-in self-test state machines and a memory built-in self-test engine operating a predetermined one of the memory built-in self-test state machines. It also includes a method for performing a built-in self-test on an integrated circuit device. The method includes externally resetting a predetermined one of a plurality of memory state machines in a memory built-in self-test controller; performing a memory built-in self-test utilizing the reset memory state machine; and obtaining the results of the performed memory built-in self-test.
    Type: Application
    Filed: October 12, 2001
    Publication date: April 17, 2003
    Inventor: Michael C. Dorsey
  • Publication number: 20020036416
    Abstract: An accessory tray includes a first tray portion and a second tray portion adapted to be coupled to and decoupled from the first tray portion. A third tray portion can also be provided for coupling to and decoupling from the first tray portion. The accessory tray is adapted to couple to a high chair tray.
    Type: Application
    Filed: September 10, 2001
    Publication date: March 28, 2002
    Inventors: Andrew Mendenhall, Michael C. Dorsey, Dennis M. Turner
  • Patent number: D438723
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: March 13, 2001
    Assignee: Cosco Management, Inc.
    Inventors: Dennis M. Turner, Andrew Mendenhall, Michael C. Dorsey