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:
Aug. 04, 1998
Filed:
Jul. 28, 1995
Eric Filliatre, Merignac, FR;
Olivier Pernia, Bordeaux, FR;
Sextant Avionique, Meudon La Foret, FR;
Abstract
A method for encoding of words of an image memory designed to be read periodically to refresh an image formed on the screen by set of pixels wherein the image includes surfaces having a uniform color and demarcated by a contour having a median line and the neighborhood of the median line including, on either side of this line, the pixels neighboring a pixel of the median line. The image further contains filar plotting features with one pixel of the screen being in a one to one correspondence with the memory cell containing a word and the reading of the current cell including at least a part of the information needed to write the corresponding pixel on the screen. The method involves recoding memory words in relation to the contours including not only the memory words related to the median lines of the contours but also the memory words related to the neighborhood of the contour. The code of each re-coded memory word includes two information bits concerning the circumstances of the writing of the recoded bits. These two bits enable the identification by the combination of four different possible values.