Patents by Inventor Sarah J. Fain

Sarah J. Fain 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).

  • Method and apparatus for batery saving in a communication receiver
    Patent number: 5542117
    Abstract: A method and apparatus in a receiver (110) for use in a selective call communication system (100) conserves battery power. The system (100) utilizes a signaling protocol (300) comprising a first bit and frame sync (320) transmitted at a predetermined baud rate, followed by a second bit and frame sync (322) transmitted at a second baud rate. The first bit and frame sync (320) defines the second baud rate. The receiver (110) synchronizes (406, 410) with the first bit and frame sync (320), determines (416) therefrom the second baud rate, and battery saves (420) during transmission of the second bit and frame sync (322) in response to determining that the second baud rate is equal to the predetermined baud rate.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: July 30, 1996
    Assignee: Motorola, Inc.
    Inventors: Karen Hendricks, Sarah J. Fain, Kenneth S. Lerner
  • Method and apparatus for battery drain reduction by adjusting for dynamic changes of receiver warm-up time
    Patent number: 5530911
    Abstract: A system and method for minimizing current drain of a battery in a portable receiver, such as a selective call receiver (110), by monitoring the warm-up time of a component (130) of the receiver (116), such as an oscillator (134), to periodically determine changes in the warm-up time of the component (130). That component of the receiver is powered up prior to designated time slots (440) by a time period (Wt) according to the dynamic changes in receiver warm-up time.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: June 25, 1996
    Assignee: Motorola, Inc.
    Inventors: Kenneth S. Lerner, Sarah J. Fain, Robert M. Gorday