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:
Apr. 22, 1980
Filed:
May. 04, 1978
Donald F Wilhelm, Toledo, OH (US);
William J Jones, Jr, Toledo, OH (US);
Helm Instrument Co., Inc., Toledo, OH (US);
Abstract
An apparatus for indicating a quantity of electrical information in decimal notation. An input signal having a voltage level proportional to the quantity to be indicated is compared with a plurality of decimally related reference voltage levels to generate a separate decade enable signal for each reference voltage level which is equal to or less than the input signal voltage level. The input signal and the decade enable signals are utilized to generate a units signal having a voltage level proportional to the difference between the input signal voltage level and the voltage level of the largest reference voltage for which a decade enable signal has been generated. The units signal voltage level is compared with the reference voltage levels to generate a separate units enable signal for each of the reference voltage levels which are equal to or less than the units signal voltage level. The decade and units enable signals drive a display which typically includes a plurality of light emitting diodes for indicating the quantity of the electrical information. This display can have the decades indicating LEDs positioned in a semi-circle and the units indicating LEDs positioned in a straight line for improved readability.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile