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:
Sep. 01, 1987
Filed:
Oct. 02, 1984
William Bohmer, Flanders, NJ (US);
Control Interface Company Limited, Randolph, NJ (US);
Abstract
Liquid crystal display for use in an oscilloscope. Analog multiplexing techniques enable displaying of waveforms of input signals with frequencies as high as 1 MHz. An xy grid is formed by two interleaved arrays of alternate parallel transparent electrodes. Use of liquid crystal material results in very low power consumption and voltage threshold, improved lifetime, a wide viewing angle, and no image washout at high ambient light levels. Addition of a digital voltmeter, frequency counter, auto sync circuitry, dual trace, and movable cursor expands the capabilities of the display. A gray scale surrounds the actual null points on the display, allowing suitable resolution with a minimum of channels.