| 摘要 |
PROBLEM TO BE SOLVED: To make a message preservation period not uniform but dependent on the necessity for each message, to thereby improve user convenience.SOLUTION: A message information management device 3 includes: a message registration unit 35 which registers a message, transmitted from a user terminal 1, into a message storage unit 38; a message playback unit 36 which reproduces the message registered in the message storage unit 38 according to the request from the user terminal 1, and stores the reproduction date of the message concerned in the message storage unit 38; and a message deletion unit 37 which discriminates whether or not to delete each message registered in the message storage unit 38 using the last reproduction date, and deletes from the message storage unit 38 the message discriminated to be deleted.SELECTED DRAWING: Figure 1 |
