Patent ID: 6044280
Filing Date: 2000-03-28
Classification: H02J,H04M

Abstract:
An arrangement in which a useful signal is transmitted between at least two device units which each have a separate power supply circuit, the power supply circuit of at least one of said device units being powered from an energy storage means and the power supply circuit of at least a second one of said device units being powered from a power supply mains, characterized in that at least one of the device units powered from a power supply mains can be coupled to at least one of the device units powered from an energy storage means for their common power supply from the energy storage means and can be coupled for useful-signal transmission between them via coupling elements in which the at least one of said device units powered from an energy storage means is formed by a mobile section of a cordless useful signal transmission device and the at least one of said device units powered form a power supply mains forms a stationary section of the cordless useful signal transmission device.