Patents Assigned to Compaq Information Technologies, Inc.
  • Hood intrusion and loss of AC power detection with automatic time stamp
    Patent number: 6289456
    Abstract: A battery-powered computer chassis intrusion detection circuit which stores the time and date that the chassis hood, components, or AC power was removed. When intrusion occurs, an alarm bit isolates the detection circuit oscillator from the circuit, effectively stopping a real time clock from incrementing the time and date. When the computer is powered back up, internal ROM checks to see if an alarm condition occurred. If so, the intrusion date and time is recorded and the user or administrator may be alerted.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: September 11, 2001
    Assignee: Compaq Information Technologies, Inc.
    Inventors: Sung Hsia Kuo, Alan M. Green