Method and system for blocking hazardous information

A system for blocking objectionable information, the system comprising:

• a server configured to store multimedia content, and provide current objectionable information determination data and current objectionable information determining software;
• and
• at least one mobile communication terminal configured to:
• receive the objectionable information determination data from the server and store the objectionable information determination data if a current version of the objectionable information determination data is not stored in the mobile communication terminal,
• receive the objectionable information determining software from the server, and installing the objectionable information determining software in the mobile communication terminal if the current version of the objectionable information determining software is not installed in the mobile communication terminal,
• receive header information corresponding to a particular multimedia content,
• extract grade information from the header,
• determine if the extracted grade information is an allowable grade indicating that the particular multimedia content can be received by the mobile communication terminal,
• receive the particular multimedia content if the extracted grade information is determined to be the allowable grade or if the grade information is not recorded in the header,
• compare the received multimedia content using the objectionable information determining software with the objectionable information determination data stored in the mobile communication terminal to determine if the multimedia content is objectionable,
• assign an objectionable grade to the header of the multimedia content when the comparing step determines the received multimedia content is objectionable, and
• transmit the header including the assigned objectionable grade including a priority of the assigned objectionable grade to the server that sent the particular multimedia contents so that the server adjusts the grade for the particular multimedia content, if the priority of the assigned objectionable grade is higher than a priority of a previously assigned objectionable grade.

A mobile communication terminal, comprising:

• a receiving unit configured to receive objectionable information determination data from a server and store the objectionable information determination data if a current version of the objectionable information determination data is not stored in the mobile communication terminal, to receive objectionable information determining software from the server if the current version of the objectionable information determining software is not installed in the mobile communication terminal, and to receive header information corresponding to a particular multimedia content;
• an extracting unit configured to extract grade information from the header;
• a determining unit configured to determine if the extracted grade information is an allowable grade indicating that the particular multimedia content can be received by the mobile communication terminal, said receiving unit further configured to receive the particular multimedia content if the determining step determines the extracted grade information is the allowable grade or if the grade information is not recorded in the header;
• a comparing unit configured to compare the received multimedia content using the objectionable information determining software with the objectionable information determination data stored in the mobile communication terminal to determine if the multimedia content is objectionable;
• an assigning unit configured to assign an objectionable grade to the header of the multimedia content when the comparing unit determines the received multimedia content is objectionable;
• and
• a transmitting unit configured to transmit the header including the assigned objectionable grade and a priority of the assigned objectionable grade to the server that sent the particular multimedia contents so that the server adjusts the grade for the particular multimedia content, if the priority of the assigned objectionable grade is higher than a priority of previously assigned objectionable grade.