Extended character displaying method and apparatus for refreshing teletext pages

Abstract

A method for displaying extended characters for refreshing a page of teletext that includes, successively for each of the e tended characters to be displayed in a determined line of the teletext page, erasing the old extended characters in the line between the display position of the n w extended character to be displayed and a determined position further back. A character in the determined position further back is not erased. The determined position further back is the display position of a new extended character preceding in the determined line the extended character to be displayed or the display position of the first character of the line. The method further includes displaying the extended character to be displayed at its display position. The method prevents flickering of extended characters caused by the refresh of the teletext page.

Dependencies are inferred from the claim text.