Patent ID: 8190621

Claim:
A method of blocking a newly inputted harmful content by referring to a database recording harmful content items, the method comprising the steps of: (a) classifying, by a processor programmed to operate as a classifier, a new content into particular categories among a plurality of categories, the new content including information for presenting to end users over a network, wherein the new content is classified into a first category and a second category, wherein the first category is a category of photos or a category of comics, and wherein the second category is a category of color or a category of black-and-white; (b) determining, by a filtering part, a degree of harmfulness of the classified new content by extracting text data from the classified new content and by analyzing an image area of a person or an object with a first optimal filter and a second optimal filter associated with said first category and second category respectively, the degree of harmfulness representing a possibility of said classified new content to be determined as a harmful content, wherein the first optimal filter and the second optimal filter are optimal for determining the degree of harmfulness of the classified new content; (c) recording, by the filtering part, the classified new content in the database recording harmful content items if said degree of harmfulness of said classified new content is determined to be higher than a first upper threshold, or uploading, by an image registering part, the classified new content if said degree of harmfulness of said classified new content is determined to be lower than a first lower threshold, or comparing, by a matching engine, the classified new content with said harmful content items recorded in the database to calculate a degree of similarity between the classified new content and said harmful content items if said degree of harmfulness of said classified new content is determined to be between the first upper threshold and the first lower threshold; (d) recording, by the matching engine, the classified new content in the database if said degree of similarity is determined to be higher than a second upper threshold, or uploading, by the image registering part, the classified new content if said degree of similarity is determined to be lower than a second lower threshold, or displaying, by a displaying part, information relating to at least one of: the degree of harmfulness, the degree of similarity, and a user who created or distributed the new content if said degree of similarity is determined to be between the second upper threshold and the second lower threshold; and (e) recording the classified new content in the database or uploading the classified new content in response to user determination based on the displayed information.