| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain the protection of copyrights by suppressing illegal viewing and listening and copying when viewing and listening content existing in a house by an apparatus on the outside of the house while preventing the deviation of the range of personal use in content transmission. <P>SOLUTION: A content receiver accessed from the outside of the house to a content transmitter in the house previously carries out first authentication processing between the content transmitter and the content receiver in the house and out-of-house access information sharing processing required in case of an access from the outside of the house. The content receiver registers information related to the content receiver and out-of-house access information in an apparatus-information table of the content transmitter. When accessing the content transmitter in the house by the content receiver brought outside the house, the information related to the content receiver is registered in an apparatus information table of the content transmitter, and the content transmitter transmits content to the content receiver only when second authentication processing utilizing the out-of-house access information succeeds between both transmitter and receiver. <P>COPYRIGHT: (C)2010,JPO&INPIT |
