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:
Jun. 08, 1982
Filed:
Apr. 28, 1980
John L Regehr, Stewartville, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A convenient hard copy output of a cathode ray tube (CRT) screen display is provided by a thermal printer which prints a line of dots equal in number to the number of dots in one raster scan on the CRT screen by printing the serial digital information in one such raster scan, as generated by the display device prior to incorporation into a composite video signal, during each refresh cycle of the screen until the entire screen content has been reproduced. Use of one line during each refresh cycle enables the reproduction of the screen content by gating the serial data from the display control circuitry without the need for a separate character generator or the related circuitry and also accommodates the use of an interlaced raster.