Patents by Inventor Gene L. Bischoff

Gene L. Bischoff 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 erasing a signal recorded on a magnetic disk
    Patent number: 4714969
    Abstract: A video signal recorded on a magnetic disk is erased by applying a fixed frequency erasing signal as the disk is decelerating. By recording the erasing signal while slowing the disk, an effect is obtained that is comparable to scanning through a range of increasing frequencies. The high frequencies obtained, which are ordinarily beyond the frequency response of the erasing circuit, are effective in removing the resident video signal and in preparing the disk for a new recording.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: December 22, 1987
    Assignee: Eastman Kodak Company
    Inventors: Gene L. Bischoff, James E. Elly