| 摘要 |
<p>PROBLEM TO BE SOLVED: To effectively acquire information having a portion which is to be dynamically changed.SOLUTION: The communication device according to an embodiment of the invention comprises: a storage unit which stores object information including first to Nth elements and first to Nth update information identifiers for identifying versions of the first to Nth elements; a transmission unit which transmits an acquisition request including all of or a part of the first to Nth update information identifiers, to an acquisition destination device through a network; a reception unit which receives first update information for updating at least one element of elements of which update information identifiers are transmitted by the acquisition request and second update information for updating an update information identifier of the element; and an update unit which updates the element in the storage unit with the first update information and updates the update information identifier of the element with the second update information.</p> |
