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:
May. 03, 1988
Filed:
Sep. 09, 1985
Dale Chatham, Weatherford, TX (US);
Gerald E Gaulke, Lewisville, TX (US);
Other;
Abstract
Video control circuitry for controlling the video format presented to the cathode ray tube to provide a combination of character generation and cell generation along with selective character inversion on a character-by-character basis. The video controller may comprise a video memory means for storing video character codes, character generator means and cell generator means both being coupled from the output of the video memory means in a common to a shift register. The shift register has associated therewith controls for the loading thereof and for the shifting of signals therefrom. Control signal means are provided having a video inverting and a video non-inverting state. At the output of the shift register, there is preferably provided output gating means. The aforementioned control signals couple to the output gating means for providing either inversion or non-inversion of the signal to the output gating means from the shift register. Depending upon the state of the control signal, the character information is either inverted or not inverted.