An apparatus is provided for allowing rating level control of the viewing of a program. The apparatus includes a device for entering a desired rating level for controlling the viewing of a program, a device for extracting rating data from a program video segment, the rating data indicating a rating level...http://www.google.ca/patents/US6115057?utm_source=gb-gplus-sharePatent US6115057 - Apparatus and method for allowing rating level control of the viewing of a program
