A mechanism is provided that identifies certain classes of images that are likely to be re-used, and utilizes this information to manage a cache better. Adapters can provide additional cell phone communication channels enabling a user to talk on the phone while receiving a broadcast into storage or to quickly receive a broadcast over multiple channels. Each set of reference data corresponds to at least one pixel. The surface of revolution and the cutting edge, as seen in the direction of the cylinder center axis, have corresponding curvatures.