Patents by Inventor Alex Zatsman

Alex Zatsman 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: 9253448
    Abstract: This invention provides a system and method to determine orientation/pose of a contact lens residing on the transparent bottom of a fluid-filled, typically opaque-sided cuvette. This allows the system to determine whether the subject contact lens is in a concave up or concave down orientation, and whether the lens is everted. An illuminator is aligned on a longitudinal axis of the cuvette through the contact lens at a position over the cuvette, and a vision system camera is aligned beneath the bottom of the cuvette on the axis. In alternate embodiments the axial locations of the camera and the illuminator can be varied. The camera acquires images of the contact lens. The vision system associated finds the appropriate contact lens edges and characteristics of features. These features allow each of the four poses to be distinguished and categorized for either an acceptable/good or unacceptable/bad pose within the cuvette.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: February 2, 2016
    Assignee: Cognex Corporation
    Inventors: Lei Wang, Alex Zatsman, Lowell Jacobson
  • Patent number: 6144413
    Abstract: A digital television (DTV) receiver receives a data signal that is divided into a plurality of segments each separated by a known data segment sync sequence. The receiver includes a data segment sync signal detector that receives the data signal and filters the signal to provide a filtered data signal. The detector computes the difference between samples of the filtered data signal and an average expected filtered signal value that is representative of a nominal filtered signal value in the middle of the segment sync sequence. The detector then computes the absolute value of the computed difference, and the resultant absolute value is summed with a sampled value from the previous segment and the summed value is stored into an accumulator. The process is repeated for several segments. The location of the data segment sync sequence within the segment is determined by comparing the summed values to determine the smallest summed value, which represents the center of the segment sync sequence.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: November 7, 2000
    Assignee: Analog Devices, Inc.
    Inventor: Alex Zatsman