Method and apparatus for processing chinese teletext

摘要

Method and apparatus for processing a Chinese teletext. A first reference list contains Chinese characters which rarely form a phrase with an adjacent character. A second reference list contains Chinese characters which are used to divide a sentence and/or form a phrase with an adjacent character. The teletext is divided into character strings using a special symbol and the characters contained in the first reference list. A calculation is performed on the character strings to extract and store Chinese phrases. A density value is derived for each stored Chinese phrase using a statistical formula that represents how often each Chinese phrase appears in the teletext. Phrases having a density value that is equal to or greater than a predetermined value are selected as key phrases for display.