Patents by Inventor Frederick Henry Wise

Frederick Henry Wise 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).

  • Digital video modulation apparatus
    Patent number: 3939303
    Abstract: A modulator for producing a digital sub-carrier amplitude modulated by a video or other modulating signal comprises sampling means for sampling the modulating signal at twice the process carrier frequency, and selector means for feeding the samples to an output with alternate samples changed in value whilst preserving their timing relative to the remaining samples.
    Type: Grant
    Filed: August 13, 1973
    Date of Patent: February 17, 1976
    Assignee: Independent Broadcasting Authority
    Inventor: Frederick Henry Wise