Patents by Inventor Andrew D. MacLaurin

Andrew D. MacLaurin 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).

  • Heart pacer time-domain processing of internal physiological signals
    Patent number: 4466440
    Abstract: There is disclosed a heart pacer in which the sensed signal is processed in the time domain rather than the frequency domain. A delta modulator operates directly on the sensed electrogram signal, without any intervening filtering, to derive a sequence of bits whose states represent increments or decrements in the sensed signal amplitude. Decisions as to cardiac activity are based on the sequence of bit values thus generated. The particular delta modulator disclosed is highly advantageous in that it allows highly accurate tracking and representation of the sensed signal.
    Type: Grant
    Filed: November 12, 1981
    Date of Patent: August 21, 1984
    Assignee: Telectronics Pty. Ltd.
    Inventors: David K. Money, Andrew D. MacLaurin