COMPUTER NETWORK INFORMATION USE MONITORING

摘要

Information sent from a server in response to a request from a client computer is accompanied by a version stamp, comprising date/time code. At the client, on each occurrence of a specified event or events, the version stamp is compared with any previous version stamp to determine whether this is a new transmission of information or not. A log is kept at the client of all information displayed, whether on-line or off-line, and the logged information is subsequently returned to the server, when a subsequent request for information is made by the client of the server. When it is determined from the version stamp that new information is being received from the server, this indicates that the logged information has reached the server, and the log can be cleared. Similar operations can be applied to the sending and receipt of e-mail messages.