| 摘要 |
PROBLEM TO BE SOLVED: To provide an information processor, a history information presentation method, a program and a history management system which present history information.SOLUTION: An information processor 120 comprises: content attribute storage means 206 of storing content attribute indicating the property of content for each history element constituting history information; disclosure propriety management means 204, 208 of managing disclosure propriety on whether to permit disclosure of the history element of each content attribute, permit conditionally or prohibit for each user; determination means 232 of determining disclosure propriety of each history element constituting the history information for a user requesting presentation of the history information; processing means 236 of executing processing applied as a disclosure condition on the history element determined that disclosure is permitted conditionally; and presentation means of presenting presentation history information including the value of the history element determined that disclosure is permitted and the value generated by applying the processing. |
