Hypertext markup-language document displaying process for digital television, involves recopying contents of pixel map of buffer memory when document is displayed or flashed, where memory is created for visible part of document

摘要

The process involves creating a buffer memory for a visible part of a document and calculating and cutting out the pixel maps (13) of the memory. The contents of the pixel maps are filled by small size rectangles to dilute the operation of filling. The contents of the pixel map are recopied when the document is subjective to a procedure of displaying or flashing.