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:
Jul. 07, 1987
Filed:
Apr. 22, 1985
Paul M Trethewey, Penn Valley, CA (US);
The Grass Valley Group, Inc., Grass Valley, CA (US);
Abstract
A device for providing a visual indication of the value of a variable of an electrical signal has a plurality, n, of driver circuits each having an input terminal for receiving the electrical signal and a plurality, m, of output terminals. Each driver circuit is operable in a mode in which it provides an output signal at its ith output terminal when the value of the variable lies in a range corresponding to the ith increment on a scale of m increments. The position of the scale of m increments associated with each circuit is adjustable so that the scale of m increment associated with the jth driver circuit overlaps by ((m-1)+(n-1)/n) increments the scale of m increments associated with at least one of the (j-1)th circuit and the (j+1)th circuit. Light emitting elements, arranged in an interdigitated grand linear array, are coupled to respective output terminals of the driver circuits.