Patents by Inventor Daniel L. Crabtree

Daniel L. Crabtree 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: 4551759
    Abstract: A video amplifier for a raw video signal permits increasing the gain of the ignal so that it stands out from background noise prior to processing. The amplifier uses a sample and hold circuit between two gain stages to permit the raw video signal to only be sampled at a preset rate. This type of device is especially suitable for charge coupled device video where sampling is desired after a predetermined integration time for the pixel elements of a CCD array. This processing permits low voltage level signals to be amplified relatively isolated from background noise and then processed after being amplified to a level significantly above processing noise. The final gain stage permits amplifying suitable for standard video monitors to use the signal.
    Type: Grant
    Filed: April 13, 1983
    Date of Patent: November 5, 1985
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Daniel L. Crabtree