Patent ID: 7619972

Claim:
Network apparatus for the storage and replay of video data at separate nodes interconnected via a communications network, the apparatus comprising: a video storage node arranged to store video data and to transmit stored video data via the communications network; a video replay node arranged to receive, via the communications network, video data transmitted by the video storage node, and to render an image therefrom; wherein the video storage node has a transmit buffer configured to temporarily retain stored video data, and the video replay node has a receive buffer configured to temporarily retain the received video data, the video storage node being operable to transmit video data to the video replay node only if the content of the transmit buffer matches or exceeds a predetermined lower content value and the content of the receive buffer does not exceed a predetermined upper content value; and wherein the predetermined upper content value is determined such that the receive buffer comprises an unused data capacity of two times the product of the video transmission rate and the duration of a whole video frame.