The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Jan. 09, 2019
The United States of America, As Represented BY the Secretary of the Navy, San Diego, CA (US);
Oren Sternberg, San Diego, CA (US);
John Rockway, San Diego, CA (US);
Mitchell Lerner, San Diego, CA (US);
Israel Perez, San Diego, CA (US);
Nicholas Lumsden, Escondido, CA (US);
United States of America as represented by Secretary of the Navy, Washington, DC (US);
Abstract
A system includes a very low frequency (VLF) antenna connected to a circuit that has a high pass filter and a low pass filter. The circuit is configured for noise reduction and frequency localization of detected VLF signals. A receiver is configured to receive filtered VLF signals output by the circuit and to separate desired signals for processing. A display is configured to provide a user with visual feedback based at least in part on an even signature extracted by a digital signal processor (DSP).