Creation of list of multimedia documents selected from a terminal, uses lists from terminals to guide central server in updating material which is returned to terminals on request

摘要

The document list is created from documents requested from terminals, the documents being selected from multiple servers (SW1, SWl). A central server (SC) assisted by a proxy server (PR) periodically updates and stores each document selected by a terminal. In response to a request from the terminal, updated parts of the document are transferred from the central server to the terminal.