Patents by Inventor Syed Hasan Yousuf

Syed Hasan Yousuf 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: 7138792
    Abstract: An apparatus for routing power between a set of power supply taps of an automated tester and power connections on an integrated circuit under test, where the integrated circuit belongs to a family of integrated circuits that have a common power connection layout and different power connection voltage requirements. An interface board having first electrical contacts disposed in the common power connection layout makes electrical connections to the power connections of all integrated circuits belonging to the family of integrated circuits. The first electrical contacts are electrically routed to second electrical contacts disposed in a standardized configuration. A power personality card having third electrical contacts makes electrical connections to the second electrical contacts of the interface board.
    Type: Grant
    Filed: October 25, 2004
    Date of Patent: November 21, 2006
    Assignee: LSI Logic Corporation
    Inventors: Zhenhai Fu, Syed Hasan Yousuf, Philip N. Alex
  • Patent number: 6128757
    Abstract: A method for improving the fault coverage of functional tests for integrated circuits by establishing a design-specific low voltage functional screening procedure. In the disclosed embodiment of the invention, a reduced voltage test threshold is established by comparing the results of an iterative test procedure executed on a set of known good integrated circuits and integrated circuits which have passed traditional functional test programs but manifested problems in the field. For a given device under test, the iterative procedure commences by applying a system clock and nominal power supply voltage. A set of functional test vectors is then executed on the device using automated test equipment (ATE). The results are compared with expected test results to determine if the device is a passing device under the initial test conditions. If so, the power supply voltage is decremented by a predetermined value and the test process is repeated.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: October 3, 2000
    Assignee: LSI Logic Corporation
    Inventors: Syed Hasan Yousuf, Veronica Collaco Stewart, Hai Xuan Nguyen