RETRIEVAL DEVICE, RETRIEVAL METHOD AND RETRIEVAL PROGRAM

摘要

PROBLEM TO BE SOLVED: To improve convenience concerning a retrieval device, a retrieval method and a retrieval program. SOLUTION: In this content retrieval system 1, when content data are newly registered in a content registration database 4, a retrieval request device 2 of a user who has made a retrieval request to the content data can be notified that the content data have been newly registered. COPYRIGHT: (C)2007,JPO&INPIT