| 摘要 |
PROBLEM TO BE SOLVED: To provide an information management apparatus for reducing the storage quantity of data necessary for the generation of difference information, and for reducing the management and processing loads of state information related with the generation of the difference information. SOLUTION: An information management system includes an information management apparatus 10 and an information request apparatus 11. The information management apparatus 10 acquires, each time a state of an object varies, state information on these state variations, and stores the information in a storage part 48. Thereafter, when the information request apparatus 11 makes a request for providing the state information, the information request apparatus 11 is provided with, as difference information, the state information ranging from a piece of state information indicating that the state varies next to the state information provided last to the information request apparatus before receiving the providing request up to the latest piece of state information among a plurality of pieces of state information stored in the storage part 48. COPYRIGHT: (C)2009,JPO&INPIT
|
