Patents by Inventor Herbert B. Wollman

Herbert B. Wollman 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).

  • High-speed, high-resolution analog to digital converter subranging architecture
    Patent number: 5248973
    Abstract: A very high-speed, high-resolution, low-noise, subranging analog-to-digital (AJD) converter architecture is described. It employs several sample-and-hold circuits in parallel. Also, the second-stage fine quantization flash A/D converter circuit of the conventional subranging A/D converter is replaced with a hybrid subranging converter of higher resolution and linearity. This is shown to achieve a very high dynamic range by minimizing noise due to the sample-and-hold and fine quantization circuits. This architecture permits construction of 16 to 18 bit 10 MHz A/D converters applicable for airborne radar systems.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: September 28, 1993
    Assignee: The Mitre Corporation
    Inventors: B. N. Suresh Babu, Herbert B. Wollman