A method is disclosed for transferring data from a data source to a service broker. The method includes providing a data source and a service broker; providing a moderator for receiving the data transferred by the data source; providing a data store for storing data received by the moderator; and providing...http://www.google.com.hk/patents/US20040153537?utm_source=gb-gplus-share專利 US20040153537 - Adaptive method for polling
