Patents by Inventor Erik D. Perkins

Erik D. Perkins 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: 4963961
    Abstract: A vertical motion detector for a TV system motion detector. The circuit operates by delaying each motion indicator signal by multiple units of the time required for one full horizontal line sweep. If vertical motion occurs, the delayed indicator will output from the delay at the same time another indicator occurs. These signals are fed to multiple AND gates so that several coincident signals are required to produce an alarm. A switching circuit permits selection of the number of vertical motion indicators required for an alarm.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: October 16, 1990
    Assignee: Burle Technologies, Inc.
    Inventors: Jon S. Willoughby, Erik D. Perkins