Patent ID: 6620207
Filing Date: 2003-09-16
Classification: G06F

Abstract:
A Chinese teletext processing method for automatically extracting and displaying a key phrase in the teletext to aid a user to capture an essential meaning of the teletext, comprising:generating a first reference list in a memory that stores a plurality of Chinese characters which rarely form a phrase with an adjacent character in a Chinese text; generating a second reference list in the memory that stores a plurality of Chinese characters which are sometimes used as separation references for dividing a sentence and sometimes form a phrase with an adjacent character in a Chinese text; inputting a teletext; dividing the inputted teletext into respective character strings using a special symbol and the characters contained in the first reference list as separation references for dividing a sentence in the teletext; performing a calculation on the character strings in a statistical manner to extract character strings containing at least two Chinese characters as Chinese phrases and storing the Chinese phrases into a Chinese phrase data area; checking the Chinese phrases stored in the Chinese phrase data area by the second reference characters to delete a non-meaningful phrase from the Chinese phrase data area; deriving a density value of each Chinese phrase stored in the Chinese phrase area using a statistical formula that calculates a repetitive frequency of the Chinese phrase, a length of the Chinese phrase and a number of the second reference characters contained in the Chinese phrase, the repetitive frequency of the Chinese phrase representing how often the Chinese phrase appears in the teletext; and selecting a plurality of phrases having density values at least equal to a predetermined value as key phrases and outputting the selected key phrases for displaying.