Packet filtering

An, wherein the counting digital video method for packet data stream filtering in transmission system, transmitting the: aThe integrated transmitting data in the first layer according to the transmitting packet message with the through the digital filter (42) filter, a filter data of signal is transmitted receiver direct/storage device and decoder (44). A second capacitor, the method comprising a filter packet data stream, comprising characterised: aThe integrated transmitting data in the first layer according to the transmitting packet message with the through the first digital filter (42), and corresponding to the conservative flux data from the leads load selecting the filter data and is transmitted the second digital filter (45) is the second layer of filter.