Efficient encoding techniques are described for encoding resource allocation data to be signalled to a user device. An outgoing alarm line and return alarm line in each cable connect the junction box to each user box. Decompressing signals, along with interpolation methods to re-create portions of images of lesser importance in visual perception, can provide coordinated video and audio presentations of high quality in real-time over all kinds of networks and frame interpolation resulting in a displayed frame rate significantly higher than 30 fps. A liquid seal device forms a liquid seal between the member and the substrate.