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:
Dec. 28, 1993
Filed:
Jan. 31, 1992
Mark J Baginski, Boyd Tavern, VA (US);
Ernest S Gasser, Tabb, VA (US);
Dale W Jessen, Charlottesville, VA (US);
Sperry Marine Inc., Charlottesville, VA (US);
Abstract
A threshold setting circuit receives a signal coupled to the signal terminal of a comparator, delays then amplifies the signal and couples the delayed-amplified signal through a switch to the threshold signal terminal of the comparator. Prior to the reception of a signal which exceeds the threshold, the threshold level is set at the amplified noise level which is stored in storage means coupled to the threshold signal terminal. When the signal exceeds the amplified noise level, the switch is opened prior to the time that the delayed amplified signal is coupled to the threshold signal terminal and stored with the amplified noise in the storage means. Sometime after the signal ceases to exceed the amplified noise threshold level the switch is closed and the storage means tracks the amplified noise to maintain a current threshold level.