Control of the transfer of data objects over a communications link is achieved by obtaining a representative data object having an object size and a transfer time over the communications link. The object size of the representative data object is determined. The transfer time of the representative...http://www.google.de/patents/US5724514?utm_source=gb-gplus-sharePatent US5724514 - System, method and apparatus for controlling the transfer of data objects over a communications link 
