Patent ID: 8472310

Claim:
A packet distribution band controlling method for use in a distributing apparatus for distributing via a network a packet including video or audio data, comprising: receiving a packet retransmission request or a packet restoration notification for notifying that the packet is restored, which is transmitted from a receiving apparatus by the distributing apparatus; and counting respectively the packet restoration notification and the packet retransmission request to produce count values, when the count value of the packet restoration notification is larger than zero and either of the count values or a total of said count values equals or is larger than a certain value required so as to ensure a predetermined quality of the video or audio data and distribute the video or audio data in real time, decreasing a band used to transmit the packet of video or audio data by a band used to transmit a packet corresponding to the count value equal to or larger than the certain value, when the count value of the packet restoration notification is zero and the count value of the packet retransmission request is larger than zero, decreasing a band used to transmit the packet of video or audio data by a band used to transmit a packet corresponding to notifications the count value of the packet retransmission request, and when both of the count values are zero, increasing said band, and repeating said decreasing and said increasing.