Other

Argon St Incorporated

Robert L Kellogg

Robert L Kettig

Joe Carlin

Stuart M Ware

Barry E Hemmerdinger

Robert S Tamaru

Peter Hays

Bradley K Lemmon

Terry Collins

Thomas E Murdock

A physically compact, wideband signal activity identification, demodulation and characterization, and direction finding device incorporates multiple and cascadable digital signal processing modules operating in asynchronous real time. The digital signal processing modules include a device for data buffering, a device for digital signal processing (DSP), and a device for high-speed data routing. The module device for data buffering is composed of, among other memory devices, a First In Tap Out (FITO) data buffer that may be accessed at any point for delay or faster than real time resynchronization by the DSP module device. The module device for digital signal processing function incorporates a general purpose digital processor for respective module calculation of overlapped hyperchannelization Fast Fourier Transforms (FFT). Hyperchannels may be combine in a flexible manner to tailor channel bandwidth for optimum signal spectral detection of signal activity, synthesis filter and tuning, demodulation and recognition, and direction finding. The module device for high-speed data routing is composed of one-to-one, one-to-many, or many-to-one digital data routing functions, and allows flexible ordering of digital signal processing modules.

Wideband communication intercept and direction finding device using hyperchannelization

A sundial gnomon including a first surface having a plurality of parallel first surface apertures transmissive to light and through which a plurality of sunbeams pass, and a second surface having a plurality of second surface segment apertures for regulating the passage of sunbeams passing through the plurality of first surface apertures. The plurality of second surface segment apertures are arranged in a plurality of stencil patterns, each stencil pattern including a plurality of second surface segment apertures. The plurality of second surface segment apertures are configured to cause sunbeams passing through the plurality of first surface apertures to be incident upon second surface segment apertures of only one stencil pattern at a given time. Thus, sunbeams passing through the two surfaces will display the hour of the day. Preferably, the gnomon includes a second set of surfaces having apertures therein through which sunbeams pass to respectively display portions of an hour such as 10 minute intervals.

Digital sundial

Growing community of inventors

Rockville, MD, United States of America

Robert L Kellogg