Patents Assigned to CORE Engineering, Inc.
  • Patent number: 5952985
    Abstract: A method of updating characters within a multiplexed display used for displaying events including dynamic events which occur at a relatively faster rate. The display characters representing dynamic events are refreshed at a higher refresh frequency and more frequently during each display cycle. A plurality of display drivers including at least one grid driver controls the update and enablement of characters within the multiplexed display.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: September 14, 1999
    Assignee: Core Engineering, Inc.
    Inventors: Steven J. McKinney, Frank R. Aiello, Jr.
  • Patent number: 5774315
    Abstract: A surge suppression circuit for gradually charging a capacitance of a device being hot plugged into a system, such as a disk drive being hot plugged into a RAID system. Without reliance on a permanently turned-on series element, such as a pass transistor, the surge suppression circuit uses a trigger circuit in combination with either a current limiting circuit or a slew rate control circuit. The current limiting circuit relies on a current sensing resistor in combination with a transistor that turns on when a voltage reaches a certain level across the current sensing resistor. The slew rate control circuit relies on a feedback mechanism that includes a capacitor and a resistor for maintaining a substantially constant rate of charging the capacitance of the device being hot plugged.
    Type: Grant
    Filed: August 19, 1996
    Date of Patent: June 30, 1998
    Assignee: CORE Engineering, Inc.
    Inventor: Georg A. Mussenden