Patents by Inventor Eva Henin

Eva Henin 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).

  • Power system configuration and recovery from a power fault condition in a computer system having multiple power supplies
    Patent number: 5557738
    Abstract: A power system fault handling mechanism for portable electronic devices having multiple power supplies. A safety-net circuit is triggered when a power fault condition is detected. The safety-net circuit is a diode-based bridging circuit which couples all available power supplies to the power load, yet avoids feeding power back from any of the supplies to one another. This ensures that the load continues to receive power after a fault condition occurs without interruption. A microcontroller may then implement routines to switch to a working power supply so that the device may resume normal operation. The power system fault detection mechanism thus allows for the switching between system power supplies without disrupting a running process.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: September 17, 1996
    Assignee: Apple Computer, Inc.
    Inventors: David B. Townsley, Andrew Gong, Eva Henin