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:
Aug. 29, 1978
Filed:
Apr. 14, 1977
Applicant:
Inventor:
Kenneth J Petrosky, Glen Burnie, MD (US);
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04Q / ;
U.S. Cl.
CPC ...
340 / ; 340 / ; 340148 ; 3401 / ; 325419 ; 325420 ;
Abstract
An acoustic multi-tone code signal is transmitted through a water environment to a receiver unit which includes a multi-tone code decoder. If the signal-to-noise ratio of the input signal is above a certain threshold, only then will the coded signal be passed on to the decoder which will provide an output control signal in accordance with the particular code.