Patents by Inventor Erik K. Lunderius

Erik K. Lunderius 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).

  • Low voltage and low power detector circuits
    Patent number: 4882506
    Abstract: Low voltage and low power circuits for use in a subscriber power controller includes a low voltage detection circuit for generating a first output signal switching between ECL logic levels and a low power detection circuit for generating a second output signal switching between a high voltage level and a low voltage level. The low voltage detection circuit is formed of a first comparator with hysteresis and a first output stage. The low power detection circuit is formed of a second comparator with hysteresis and a second output stage. The first output signal is used to disable the controller upon detection of a low voltage at the primary input signal voltage. The second output signal is used to inform a microprocessor so as to permit it to disable all high power functions in order to conserve power.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: November 21, 1989
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Jan H. Johansson, Erik K. Lunderius