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:
Mar. 12, 1985
Filed:
Aug. 20, 1982
Applicant:
Inventor:
Hans Drenkelfort, Kiel, DE;
Assignee:
Honeywell-Elac-Nautik GmbH, Kiel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S / ; G01S / ;
U.S. Cl.
CPC ...
367115 ;
Abstract
Echo-sounding apparatus with circuitry for achieving enhanced recording on electrically sensitive paper is disclosed in which the gain of a variable gain amplifier is reduced exponentially depending on the input signal amplitude as soon as this amplitude exceeds a predetermined level. The signal generated by the variable gain amplifier is supplied to low pass and high pass filters which are connected to two inputs of a differential amplifier which controls the recording element.