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. 24, 1985
Filed:
Mar. 23, 1983
Ronald M Jackson, Portland, OR (US);
Daniel C Olin, Portland, OR (US);
Russell Y Anderson, Hillsboro, OR (US);
Tektronix, Inc., Beaverton, OR (US);
Abstract
Disclosed herein is an apparatus for displaying a logic waveform on a raster scan display device such as a CRT. A part of an input logic signal is delayed for forming a former bit, and the input logic signal acts as a present bit. A memory device stores a special pattern determined in accordance with results of logic operation of the present and former bits. An image dot of the pattern is addressed by the present and former bits and raster line position (number) information, and the output therefrom is applied as an intensity control signal to the display device. Since the memory device does not need FONT information, this invention needs very little software manipulation of data, and the capacity of the memory device is small. In addition, this invention can display glitches and graticule tick marks.