Patent ID: 8863169

Claim:
A content transmission device that is connected to a plurality of external devices including a reproduction device reproducing content data, comprising: a transmitting section transmitting content data to the reproduction device; a detecting section detecting the state of each of the plurality of external devices; a parental level determining section determining for the reproduction device a boundary between a parental level on content data the viewing of which is restricted and a parental level on content data the viewing of which is allowed according to the state of each of the plurality of external devices detected by the detecting section; and a control section controlling transmission of content data from the transmitting section based on the relation between the boundary determined by the parental level determining section and a parental level set on content data, wherein the boundary for the reproduction device is set through a graphical user interface comprising a target device selection display, a target device state selection display, and an age restriction display, wherein multiple restriction standards are set for the reproduction device using respective restriction standard setting screens, access to a restriction standard setting screen requiring an authentication process including integrated circuit (IC) card authentication.