Patents by Inventor Stewart S. Austin

Stewart S. Austin 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).

  • Patent number: 4507783
    Abstract: Circuitry for detecting errors in a digital bit stream comprising a succession of data blocks and wherein each data block incorporates a parity check. At an error monitoring location, a bistable device toggles in response to either a logical "1" or "0" in the bit stream. The output of the bistable device is sampled at a submultiple of the bit rate and compared with a predetermined criterion to detect bit errors.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: March 26, 1985
    Assignee: AT&T Bell Laboratories
    Inventors: Stewart S. Austin, Joseph J. Baldini, III, Joel E. Jakubson, Clarke S. Ryan
  • Patent number: 4340305
    Abstract: First and second plates are formed with like periodic patterns. A laser beam illuminates the second plate through the alignment marks of the first plate to provide a pair of diffracted beams that are detected with alignment being indicated when the beams are of the same intensity.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: July 20, 1982
    Assignee: Massachusetts Institute of Technology
    Inventors: Henry I. Smith, Stewart S. Austin, Dale C. Flanders
  • Patent number: 4200395
    Abstract: First and second plates are formed with like periodic patterns. A laser beam illuminates the second plate through the alignment marks of the first plate to provide a pair of diffracted beams that are detected with alignment being indicated when the beams are of the same intensity.
    Type: Grant
    Filed: May 3, 1977
    Date of Patent: April 29, 1980
    Assignee: Massachusetts Institute of Technology
    Inventors: Henry I. Smith, Stewart S. Austin, Dale C. Flanders